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-industry-pattern/array_shadowinit_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:22:30,089 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:22:30,091 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:22:30,107 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:22:30,107 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:22:30,109 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:22:30,110 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:22:30,113 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:22:30,115 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:22:30,116 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:22:30,123 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:22:30,124 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:22:30,125 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:22:30,127 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:22:30,128 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:22:30,130 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:22:30,131 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:22:30,134 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:22:30,137 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:22:30,142 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:22:30,143 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:22:30,144 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:22:30,148 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:22:30,149 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:22:30,149 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:22:30,150 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:22:30,150 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:22:30,152 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:22:30,152 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:22:30,153 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:22:30,154 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:22:30,156 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:22:30,157 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:22:30,157 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:22:30,158 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:22:30,158 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:22:30,159 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:22:30,159 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:22:30,160 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:22:30,160 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:22:30,179 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:22:30,179 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:22:30,182 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:22:30,183 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:22:30,183 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:22:30,183 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:22:30,183 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:22:30,184 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:22:30,184 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:22:30,184 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:22:30,184 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:22:30,184 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:22:30,185 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:22:30,186 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:22:30,187 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:22:30,187 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:22:30,187 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:22:30,187 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:22:30,188 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:22:30,188 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:22:30,188 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:22:30,188 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:22:30,188 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:22:30,189 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:22:30,189 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:22:30,189 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:22:30,189 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:22:30,189 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:22:30,190 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 11:22:30,248 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:22:30,266 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:22:30,274 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:22:30,276 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:22:30,277 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:22:30,278 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-industry-pattern/array_shadowinit_true-unreach-call_true-termination.i [2019-05-23 11:22:30,350 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5bc785b7/418829eeadbb4e199df64c0de30c35a6/FLAGeef569b37 [2019-05-23 11:22:30,837 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:22:30,838 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-industry-pattern/array_shadowinit_true-unreach-call_true-termination.i [2019-05-23 11:22:30,844 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5bc785b7/418829eeadbb4e199df64c0de30c35a6/FLAGeef569b37 [2019-05-23 11:22:31,193 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5bc785b7/418829eeadbb4e199df64c0de30c35a6 [2019-05-23 11:22:31,201 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:22:31,202 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:22:31,203 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:22:31,203 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:22:31,207 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:22:31,208 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,211 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126c363b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31, skipping insertion in model container [2019-05-23 11:22:31,211 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,218 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:22:31,234 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:22:31,439 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:22:31,443 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:22:31,461 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:22:31,478 INFO L146 ILogger]: Completed translation [2019-05-23 11:22:31,479 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31 WrapperNode [2019-05-23 11:22:31,479 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:22:31,480 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:22:31,480 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:22:31,480 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:22:31,488 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,497 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,514 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:22:31,515 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:22:31,515 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:22:31,515 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:22:31,523 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,523 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,524 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,525 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,529 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,617 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,619 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (1/1) ... [2019-05-23 11:22:31,621 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:22:31,621 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:22:31,621 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:22:31,622 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:22:31,622 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (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 11:22:31,682 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:22:31,682 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:22:31,682 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:22:31,682 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:22:31,682 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:22:31,683 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:22:32,047 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:22:32,047 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:22:32,049 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:22:32 BoogieIcfgContainer [2019-05-23 11:22:32,049 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:22:32,050 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:22:32,050 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:22:32,053 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:22:32,053 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:22:31" (1/3) ... [2019-05-23 11:22:32,054 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646bb4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:22:32, skipping insertion in model container [2019-05-23 11:22:32,054 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:22:31" (2/3) ... [2019-05-23 11:22:32,055 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@646bb4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:22:32, skipping insertion in model container [2019-05-23 11:22:32,055 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:22:32" (3/3) ... [2019-05-23 11:22:32,057 INFO L146 ILogger]: Analyzing ICFG array_shadowinit_true-unreach-call_true-termination.i [2019-05-23 11:22:32,066 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:22:32,074 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:22:32,090 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:22:32,117 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:22:32,117 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:22:32,117 INFO L146 ILogger]: Hoare is true [2019-05-23 11:22:32,118 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:22:32,118 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:22:32,118 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:22:32,118 INFO L146 ILogger]: Difference is false [2019-05-23 11:22:32,118 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:22:32,118 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:22:32,132 INFO L146 ILogger]: Start isEmpty. Operand 35 states. [2019-05-23 11:22:32,139 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 24 [2019-05-23 11:22:32,140 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:32,141 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] [2019-05-23 11:22:32,143 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:32,147 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:32,148 INFO L146 ILogger]: Analyzing trace with hash 632025627, now seen corresponding path program 1 times [2019-05-23 11:22:32,149 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:32,149 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:32,192 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:32,192 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:32,192 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:32,241 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:32,354 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 11:22:32,356 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:22:32,357 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:22:32,360 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:22:32,370 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:22:32,370 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:22:32,373 INFO L146 ILogger]: Start difference. First operand 35 states. Second operand 4 states. [2019-05-23 11:22:32,500 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:32,500 INFO L146 ILogger]: Finished difference Result 69 states and 80 transitions. [2019-05-23 11:22:32,501 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:22:32,502 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 23 [2019-05-23 11:22:32,502 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:32,511 INFO L146 ILogger]: With dead ends: 69 [2019-05-23 11:22:32,511 INFO L146 ILogger]: Without dead ends: 42 [2019-05-23 11:22:32,514 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:22:32,530 INFO L146 ILogger]: Start minimizeSevpa. Operand 42 states. [2019-05-23 11:22:32,545 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 42 to 30. [2019-05-23 11:22:32,547 INFO L146 ILogger]: Start removeUnreachable. Operand 30 states. [2019-05-23 11:22:32,548 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-05-23 11:22:32,549 INFO L146 ILogger]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 23 [2019-05-23 11:22:32,549 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:32,550 INFO L146 ILogger]: Abstraction has 30 states and 31 transitions. [2019-05-23 11:22:32,550 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:22:32,550 INFO L146 ILogger]: Start isEmpty. Operand 30 states and 31 transitions. [2019-05-23 11:22:32,551 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 28 [2019-05-23 11:22:32,551 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:32,551 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:32,551 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:32,552 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:32,552 INFO L146 ILogger]: Analyzing trace with hash -2010454375, now seen corresponding path program 1 times [2019-05-23 11:22:32,552 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:32,552 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:32,553 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:32,553 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:32,554 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:32,583 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:32,785 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2019-05-23 11:22:33,170 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 11:22:33,171 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:33,171 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 11:22:33,181 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:33,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:33,214 INFO L146 ILogger]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:22:33,222 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:33,318 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-05-23 11:22:33,318 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:33,326 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:33,326 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:33,326 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-05-23 11:22:33,400 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 19 treesize of output 7 [2019-05-23 11:22:33,401 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:33,408 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:33,409 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 11:22:33,409 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:22:33,458 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 11:22:33,484 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:33,485 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-05-23 11:22:33,486 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:22:33,486 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:22:33,487 INFO L146 ILogger]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:22:33,487 INFO L146 ILogger]: Start difference. First operand 30 states and 31 transitions. Second operand 12 states. [2019-05-23 11:22:33,829 WARN L146 ILogger]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-05-23 11:22:34,033 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2019-05-23 11:22:34,222 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:34,222 INFO L146 ILogger]: Finished difference Result 47 states and 48 transitions. [2019-05-23 11:22:34,223 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:22:34,224 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 27 [2019-05-23 11:22:34,224 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:34,225 INFO L146 ILogger]: With dead ends: 47 [2019-05-23 11:22:34,225 INFO L146 ILogger]: Without dead ends: 45 [2019-05-23 11:22:34,229 INFO L146 ILogger]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:22:34,229 INFO L146 ILogger]: Start minimizeSevpa. Operand 45 states. [2019-05-23 11:22:34,238 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-05-23 11:22:34,238 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:22:34,239 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-05-23 11:22:34,240 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 27 [2019-05-23 11:22:34,240 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:34,240 INFO L146 ILogger]: Abstraction has 36 states and 37 transitions. [2019-05-23 11:22:34,240 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:22:34,240 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 37 transitions. [2019-05-23 11:22:34,242 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 36 [2019-05-23 11:22:34,243 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:34,244 INFO L146 ILogger]: trace histogram [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 11:22:34,244 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:34,244 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:34,245 INFO L146 ILogger]: Analyzing trace with hash -36693906, now seen corresponding path program 1 times [2019-05-23 11:22:34,245 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:34,245 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:34,246 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:34,247 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:34,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:34,277 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:34,382 INFO L146 ILogger]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:34,383 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:34,383 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 11:22:34,398 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:34,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:34,413 INFO L146 ILogger]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:22:34,415 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:34,517 INFO L146 ILogger]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:34,536 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:34,536 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-05-23 11:22:34,537 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:22:34,537 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:22:34,537 INFO L146 ILogger]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:22:34,538 INFO L146 ILogger]: Start difference. First operand 36 states and 37 transitions. Second operand 10 states. [2019-05-23 11:22:34,670 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:34,670 INFO L146 ILogger]: Finished difference Result 74 states and 76 transitions. [2019-05-23 11:22:34,672 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:22:34,672 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 35 [2019-05-23 11:22:34,673 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:34,674 INFO L146 ILogger]: With dead ends: 74 [2019-05-23 11:22:34,674 INFO L146 ILogger]: Without dead ends: 54 [2019-05-23 11:22:34,675 INFO L146 ILogger]: 0 DeclaredPredicates, 43 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:22:34,675 INFO L146 ILogger]: Start minimizeSevpa. Operand 54 states. [2019-05-23 11:22:34,680 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 54 to 40. [2019-05-23 11:22:34,681 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:22:34,681 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2019-05-23 11:22:34,682 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2019-05-23 11:22:34,682 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:34,682 INFO L146 ILogger]: Abstraction has 40 states and 41 transitions. [2019-05-23 11:22:34,682 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:22:34,682 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 41 transitions. [2019-05-23 11:22:34,683 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 40 [2019-05-23 11:22:34,684 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:34,684 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:34,684 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:34,684 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:34,684 INFO L146 ILogger]: Analyzing trace with hash -637648916, now seen corresponding path program 2 times [2019-05-23 11:22:34,685 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:34,685 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:34,686 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:34,686 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:34,686 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:34,704 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:35,072 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:35,072 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:35,073 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 11:22:35,091 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:35,121 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:35,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:35,123 INFO L146 ILogger]: Trace formula consists of 69 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:22:35,125 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:35,199 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:22:35,199 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,207 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,207 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,208 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:22:35,393 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:22:35,395 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,396 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:22:35,397 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:35,406 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:35,407 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 11:22:35,408 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:22:35,455 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:35,477 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:35,477 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 21 [2019-05-23 11:22:35,478 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:22:35,478 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:22:35,480 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:22:35,480 INFO L146 ILogger]: Start difference. First operand 40 states and 41 transitions. Second operand 21 states. [2019-05-23 11:22:36,113 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2019-05-23 11:22:36,485 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:36,485 INFO L146 ILogger]: Finished difference Result 59 states and 60 transitions. [2019-05-23 11:22:36,485 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:22:36,486 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 39 [2019-05-23 11:22:36,486 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:36,487 INFO L146 ILogger]: With dead ends: 59 [2019-05-23 11:22:36,487 INFO L146 ILogger]: Without dead ends: 57 [2019-05-23 11:22:36,488 INFO L146 ILogger]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:22:36,488 INFO L146 ILogger]: Start minimizeSevpa. Operand 57 states. [2019-05-23 11:22:36,493 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 57 to 48. [2019-05-23 11:22:36,493 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:22:36,494 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-05-23 11:22:36,494 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 39 [2019-05-23 11:22:36,495 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:36,495 INFO L146 ILogger]: Abstraction has 48 states and 49 transitions. [2019-05-23 11:22:36,495 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:22:36,495 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 49 transitions. [2019-05-23 11:22:36,496 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 48 [2019-05-23 11:22:36,496 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:36,496 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:36,497 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:36,497 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:36,497 INFO L146 ILogger]: Analyzing trace with hash -1452642623, now seen corresponding path program 3 times [2019-05-23 11:22:36,497 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:36,498 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:36,498 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,499 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:36,499 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,514 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:36,693 INFO L146 ILogger]: Checked inductivity of 26 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:36,694 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:36,694 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 11:22:36,702 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:36,719 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:22:36,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:36,720 INFO L146 ILogger]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:22:36,722 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:36,779 INFO L146 ILogger]: Checked inductivity of 26 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:36,798 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:36,798 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2019-05-23 11:22:36,798 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:22:36,799 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:22:36,799 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:22:36,799 INFO L146 ILogger]: Start difference. First operand 48 states and 49 transitions. Second operand 13 states. [2019-05-23 11:22:36,956 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:36,956 INFO L146 ILogger]: Finished difference Result 94 states and 96 transitions. [2019-05-23 11:22:36,957 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:22:36,957 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 47 [2019-05-23 11:22:36,957 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:36,958 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:22:36,958 INFO L146 ILogger]: Without dead ends: 66 [2019-05-23 11:22:36,959 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:22:36,959 INFO L146 ILogger]: Start minimizeSevpa. Operand 66 states. [2019-05-23 11:22:36,965 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 66 to 52. [2019-05-23 11:22:36,965 INFO L146 ILogger]: Start removeUnreachable. Operand 52 states. [2019-05-23 11:22:36,966 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2019-05-23 11:22:36,966 INFO L146 ILogger]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 47 [2019-05-23 11:22:36,966 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:36,967 INFO L146 ILogger]: Abstraction has 52 states and 53 transitions. [2019-05-23 11:22:36,967 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:22:36,967 INFO L146 ILogger]: Start isEmpty. Operand 52 states and 53 transitions. [2019-05-23 11:22:36,968 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 52 [2019-05-23 11:22:36,968 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:36,968 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:36,968 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:36,969 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:36,969 INFO L146 ILogger]: Analyzing trace with hash 185813311, now seen corresponding path program 4 times [2019-05-23 11:22:36,969 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:36,969 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:36,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,970 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:36,970 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:36,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:37,166 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:37,167 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:37,167 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 11:22:37,178 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:37,193 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:37,193 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:37,194 INFO L146 ILogger]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:22:37,196 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:37,447 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:22:37,448 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:37,453 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:37,453 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:37,454 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:22:37,668 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:22:37,671 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:37,671 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:22:37,672 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:37,679 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:37,680 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 11:22:37,680 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:22:37,734 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:37,753 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:37,753 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2019-05-23 11:22:37,753 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:22:37,754 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:22:37,754 INFO L146 ILogger]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:22:37,755 INFO L146 ILogger]: Start difference. First operand 52 states and 53 transitions. Second operand 27 states. [2019-05-23 11:22:38,563 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:38,563 INFO L146 ILogger]: Finished difference Result 71 states and 72 transitions. [2019-05-23 11:22:38,563 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:22:38,563 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 51 [2019-05-23 11:22:38,564 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:38,564 INFO L146 ILogger]: With dead ends: 71 [2019-05-23 11:22:38,564 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:22:38,566 INFO L146 ILogger]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:22:38,566 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:22:38,572 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 60. [2019-05-23 11:22:38,573 INFO L146 ILogger]: Start removeUnreachable. Operand 60 states. [2019-05-23 11:22:38,573 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-05-23 11:22:38,574 INFO L146 ILogger]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 51 [2019-05-23 11:22:38,574 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:38,574 INFO L146 ILogger]: Abstraction has 60 states and 61 transitions. [2019-05-23 11:22:38,574 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:22:38,574 INFO L146 ILogger]: Start isEmpty. Operand 60 states and 61 transitions. [2019-05-23 11:22:38,575 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 60 [2019-05-23 11:22:38,575 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:38,576 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:22:38,576 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:38,576 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:38,576 INFO L146 ILogger]: Analyzing trace with hash 1872131348, now seen corresponding path program 5 times [2019-05-23 11:22:38,576 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:38,577 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:38,577 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:38,578 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:38,578 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:38,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:38,725 INFO L146 ILogger]: Checked inductivity of 57 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:38,726 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:38,726 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 11:22:38,735 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:38,759 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:22:38,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:38,760 INFO L146 ILogger]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:22:38,763 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:38,851 INFO L146 ILogger]: Checked inductivity of 57 backedges. 42 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:38,869 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:38,870 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2019-05-23 11:22:38,870 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:22:38,870 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:22:38,871 INFO L146 ILogger]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:22:38,871 INFO L146 ILogger]: Start difference. First operand 60 states and 61 transitions. Second operand 16 states. [2019-05-23 11:22:39,079 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:39,079 INFO L146 ILogger]: Finished difference Result 114 states and 116 transitions. [2019-05-23 11:22:39,079 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:22:39,079 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 59 [2019-05-23 11:22:39,080 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:39,080 INFO L146 ILogger]: With dead ends: 114 [2019-05-23 11:22:39,080 INFO L146 ILogger]: Without dead ends: 78 [2019-05-23 11:22:39,081 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:22:39,082 INFO L146 ILogger]: Start minimizeSevpa. Operand 78 states. [2019-05-23 11:22:39,087 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 78 to 64. [2019-05-23 11:22:39,087 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:22:39,088 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2019-05-23 11:22:39,088 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 59 [2019-05-23 11:22:39,088 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:39,089 INFO L146 ILogger]: Abstraction has 64 states and 65 transitions. [2019-05-23 11:22:39,089 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:22:39,089 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 65 transitions. [2019-05-23 11:22:39,090 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:22:39,090 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:39,090 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:39,090 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:39,091 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:39,091 INFO L146 ILogger]: Analyzing trace with hash -1924824430, now seen corresponding path program 6 times [2019-05-23 11:22:39,091 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:39,091 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:39,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:39,092 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:39,092 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:39,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:39,311 INFO L146 ILogger]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:39,311 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:39,311 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 11:22:39,321 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:39,402 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:22:39,402 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:39,403 INFO L146 ILogger]: Trace formula consists of 105 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:22:39,406 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:39,781 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:22:39,782 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:39,892 WARN L146 ILogger]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-05-23 11:22:39,893 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:39,893 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:39,893 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-05-23 11:22:40,414 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:22:40,416 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:40,416 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:22:40,417 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:40,423 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:40,423 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 11:22:40,424 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:10 [2019-05-23 11:22:40,508 INFO L146 ILogger]: Checked inductivity of 70 backedges. 10 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:40,531 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:40,531 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 38 [2019-05-23 11:22:40,532 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:22:40,532 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:22:40,533 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=1260, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:22:40,533 INFO L146 ILogger]: Start difference. First operand 64 states and 65 transitions. Second operand 38 states. [2019-05-23 11:22:42,464 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:42,465 INFO L146 ILogger]: Finished difference Result 122 states and 125 transitions. [2019-05-23 11:22:42,465 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:22:42,465 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 63 [2019-05-23 11:22:42,466 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:42,466 INFO L146 ILogger]: With dead ends: 122 [2019-05-23 11:22:42,466 INFO L146 ILogger]: Without dead ends: 84 [2019-05-23 11:22:42,468 INFO L146 ILogger]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1370 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=626, Invalid=4344, Unknown=0, NotChecked=0, Total=4970 [2019-05-23 11:22:42,469 INFO L146 ILogger]: Start minimizeSevpa. Operand 84 states. [2019-05-23 11:22:42,476 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 84 to 76. [2019-05-23 11:22:42,477 INFO L146 ILogger]: Start removeUnreachable. Operand 76 states. [2019-05-23 11:22:42,478 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2019-05-23 11:22:42,482 INFO L146 ILogger]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 63 [2019-05-23 11:22:42,482 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:42,482 INFO L146 ILogger]: Abstraction has 76 states and 77 transitions. [2019-05-23 11:22:42,482 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:22:42,482 INFO L146 ILogger]: Start isEmpty. Operand 76 states and 77 transitions. [2019-05-23 11:22:42,485 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:22:42,485 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:42,485 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:42,485 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:42,485 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:42,486 INFO L146 ILogger]: Analyzing trace with hash 162556901, now seen corresponding path program 7 times [2019-05-23 11:22:42,490 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:42,490 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:42,491 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:42,491 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:42,492 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:42,531 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:42,813 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:42,813 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:42,813 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 11:22:42,824 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:42,841 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:42,842 INFO L146 ILogger]: Trace formula consists of 123 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:22:42,845 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:42,995 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:22:42,995 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:42,998 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:42,998 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:42,998 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:22:43,259 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:22:43,261 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:43,261 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:22:43,262 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:43,266 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:43,266 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 11:22:43,267 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:22:43,360 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:43,381 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:43,382 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:22:43,382 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:22:43,382 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:22:43,383 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:22:43,383 INFO L146 ILogger]: Start difference. First operand 76 states and 77 transitions. Second operand 32 states. [2019-05-23 11:22:44,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:44,722 INFO L146 ILogger]: Finished difference Result 95 states and 96 transitions. [2019-05-23 11:22:44,723 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:22:44,723 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 75 [2019-05-23 11:22:44,723 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:44,724 INFO L146 ILogger]: With dead ends: 95 [2019-05-23 11:22:44,724 INFO L146 ILogger]: Without dead ends: 93 [2019-05-23 11:22:44,725 INFO L146 ILogger]: 0 DeclaredPredicates, 105 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=1818, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:22:44,726 INFO L146 ILogger]: Start minimizeSevpa. Operand 93 states. [2019-05-23 11:22:44,732 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 93 to 84. [2019-05-23 11:22:44,732 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:22:44,733 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2019-05-23 11:22:44,733 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 75 [2019-05-23 11:22:44,733 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:44,734 INFO L146 ILogger]: Abstraction has 84 states and 85 transitions. [2019-05-23 11:22:44,734 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:22:44,734 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 85 transitions. [2019-05-23 11:22:44,735 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 84 [2019-05-23 11:22:44,735 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:44,735 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 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] [2019-05-23 11:22:44,735 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:44,736 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:44,736 INFO L146 ILogger]: Analyzing trace with hash -1135504966, now seen corresponding path program 8 times [2019-05-23 11:22:44,736 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:44,736 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:44,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:44,737 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:44,737 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:44,750 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:44,885 INFO L146 ILogger]: Checked inductivity of 155 backedges. 77 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:44,886 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:44,886 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 11:22:44,897 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:44,933 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:44,933 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:44,934 INFO L146 ILogger]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:22:44,937 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:45,080 INFO L146 ILogger]: Checked inductivity of 155 backedges. 110 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:45,101 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:45,101 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2019-05-23 11:22:45,101 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:22:45,102 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:22:45,102 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:22:45,102 INFO L146 ILogger]: Start difference. First operand 84 states and 85 transitions. Second operand 22 states. [2019-05-23 11:22:45,392 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:45,392 INFO L146 ILogger]: Finished difference Result 154 states and 156 transitions. [2019-05-23 11:22:45,392 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:22:45,393 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 83 [2019-05-23 11:22:45,393 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:45,394 INFO L146 ILogger]: With dead ends: 154 [2019-05-23 11:22:45,394 INFO L146 ILogger]: Without dead ends: 102 [2019-05-23 11:22:45,396 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:22:45,396 INFO L146 ILogger]: Start minimizeSevpa. Operand 102 states. [2019-05-23 11:22:45,402 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 102 to 88. [2019-05-23 11:22:45,402 INFO L146 ILogger]: Start removeUnreachable. Operand 88 states. [2019-05-23 11:22:45,403 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2019-05-23 11:22:45,403 INFO L146 ILogger]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 83 [2019-05-23 11:22:45,403 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:45,404 INFO L146 ILogger]: Abstraction has 88 states and 89 transitions. [2019-05-23 11:22:45,404 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:22:45,404 INFO L146 ILogger]: Start isEmpty. Operand 88 states and 89 transitions. [2019-05-23 11:22:45,405 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 88 [2019-05-23 11:22:45,405 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:45,405 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:45,405 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:45,406 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:45,406 INFO L146 ILogger]: Analyzing trace with hash 11502904, now seen corresponding path program 9 times [2019-05-23 11:22:45,406 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:45,406 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:45,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:45,407 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:45,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:45,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:45,809 INFO L146 ILogger]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:45,810 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:45,810 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 11:22:45,821 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:22:45,856 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:22:45,856 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:45,857 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 43 conjunts are in the unsatisfiable core [2019-05-23 11:22:45,860 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:46,006 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:22:46,006 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:46,011 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:46,012 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:46,012 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:22:46,070 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:22:46,071 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:22:46,072 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:46,083 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:46,083 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:46,084 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:22:46,531 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:22:46,532 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:22:46,533 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:46,534 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 13 [2019-05-23 11:22:46,534 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:46,537 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:46,537 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 11:22:46,537 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:7 [2019-05-23 11:22:46,651 INFO L146 ILogger]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:46,670 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:46,670 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 40 [2019-05-23 11:22:46,671 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:22:46,671 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:22:46,671 INFO L146 ILogger]: CoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:22:46,672 INFO L146 ILogger]: Start difference. First operand 88 states and 89 transitions. Second operand 40 states. [2019-05-23 11:22:48,185 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:48,185 INFO L146 ILogger]: Finished difference Result 107 states and 108 transitions. [2019-05-23 11:22:48,185 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:22:48,186 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 87 [2019-05-23 11:22:48,186 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:48,187 INFO L146 ILogger]: With dead ends: 107 [2019-05-23 11:22:48,187 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:22:48,188 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=367, Invalid=2825, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:22:48,189 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:22:48,194 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 96. [2019-05-23 11:22:48,195 INFO L146 ILogger]: Start removeUnreachable. Operand 96 states. [2019-05-23 11:22:48,196 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2019-05-23 11:22:48,196 INFO L146 ILogger]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 87 [2019-05-23 11:22:48,196 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:48,196 INFO L146 ILogger]: Abstraction has 96 states and 97 transitions. [2019-05-23 11:22:48,196 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:22:48,197 INFO L146 ILogger]: Start isEmpty. Operand 96 states and 97 transitions. [2019-05-23 11:22:48,197 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:22:48,197 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:48,198 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:48,198 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:48,198 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:48,198 INFO L146 ILogger]: Analyzing trace with hash 89630733, now seen corresponding path program 10 times [2019-05-23 11:22:48,199 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:48,199 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:48,199 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:48,200 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:48,200 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:48,211 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:48,431 INFO L146 ILogger]: Checked inductivity of 222 backedges. 115 proven. 107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:48,431 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:48,431 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 11:22:48,443 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:22:48,466 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:22:48,466 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:48,467 INFO L146 ILogger]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:22:48,469 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:48,618 INFO L146 ILogger]: Checked inductivity of 222 backedges. 156 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:48,637 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:48,638 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 25 [2019-05-23 11:22:48,638 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:22:48,638 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:22:48,639 INFO L146 ILogger]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:22:48,639 INFO L146 ILogger]: Start difference. First operand 96 states and 97 transitions. Second operand 25 states. [2019-05-23 11:22:49,198 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:49,198 INFO L146 ILogger]: Finished difference Result 174 states and 176 transitions. [2019-05-23 11:22:49,198 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:22:49,198 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 95 [2019-05-23 11:22:49,199 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:49,199 INFO L146 ILogger]: With dead ends: 174 [2019-05-23 11:22:49,199 INFO L146 ILogger]: Without dead ends: 114 [2019-05-23 11:22:49,200 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:22:49,201 INFO L146 ILogger]: Start minimizeSevpa. Operand 114 states. [2019-05-23 11:22:49,206 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 114 to 100. [2019-05-23 11:22:49,207 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:22:49,207 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2019-05-23 11:22:49,207 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 95 [2019-05-23 11:22:49,208 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:49,208 INFO L146 ILogger]: Abstraction has 100 states and 101 transitions. [2019-05-23 11:22:49,208 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:22:49,208 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 101 transitions. [2019-05-23 11:22:49,209 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:22:49,209 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:49,209 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:49,209 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:49,210 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:49,210 INFO L146 ILogger]: Analyzing trace with hash 1776176779, now seen corresponding path program 11 times [2019-05-23 11:22:49,210 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:49,210 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:49,211 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:49,211 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:49,211 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:49,227 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:49,549 INFO L146 ILogger]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:49,549 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:49,549 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 11:22:49,559 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:22:49,609 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-05-23 11:22:49,609 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:49,611 INFO L146 ILogger]: Trace formula consists of 159 conjuncts, 39 conjunts are in the unsatisfiable core [2019-05-23 11:22:49,613 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:49,843 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:22:49,844 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:49,848 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:49,848 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:49,849 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:22:50,125 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:22:50,126 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:50,127 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:22:50,127 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:50,131 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:50,131 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 11:22:50,132 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:22:50,225 INFO L146 ILogger]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:50,245 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:50,245 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40 [2019-05-23 11:22:50,245 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:22:50,245 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:22:50,246 INFO L146 ILogger]: CoverageRelationStatistics Valid=127, Invalid=1433, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:22:50,246 INFO L146 ILogger]: Start difference. First operand 100 states and 101 transitions. Second operand 40 states. [2019-05-23 11:22:52,772 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:52,773 INFO L146 ILogger]: Finished difference Result 119 states and 120 transitions. [2019-05-23 11:22:52,773 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:22:52,773 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 99 [2019-05-23 11:22:52,773 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:52,774 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:22:52,774 INFO L146 ILogger]: Without dead ends: 117 [2019-05-23 11:22:52,775 INFO L146 ILogger]: 0 DeclaredPredicates, 135 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=298, Invalid=2782, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:22:52,775 INFO L146 ILogger]: Start minimizeSevpa. Operand 117 states. [2019-05-23 11:22:52,779 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 117 to 108. [2019-05-23 11:22:52,779 INFO L146 ILogger]: Start removeUnreachable. Operand 108 states. [2019-05-23 11:22:52,780 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2019-05-23 11:22:52,780 INFO L146 ILogger]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 99 [2019-05-23 11:22:52,780 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:52,781 INFO L146 ILogger]: Abstraction has 108 states and 109 transitions. [2019-05-23 11:22:52,781 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:22:52,781 INFO L146 ILogger]: Start isEmpty. Operand 108 states and 109 transitions. [2019-05-23 11:22:52,782 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 108 [2019-05-23 11:22:52,782 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:52,782 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:52,782 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:52,783 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:52,783 INFO L146 ILogger]: Analyzing trace with hash 769486432, now seen corresponding path program 12 times [2019-05-23 11:22:52,783 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:52,783 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:52,784 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:52,784 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:52,784 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:52,796 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:53,087 INFO L146 ILogger]: Checked inductivity of 301 backedges. 161 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:53,088 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:53,088 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 11:22:53,096 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:22:53,142 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-05-23 11:22:53,143 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:53,144 INFO L146 ILogger]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:22:53,146 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:53,310 INFO L146 ILogger]: Checked inductivity of 301 backedges. 210 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:53,328 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:53,328 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 28 [2019-05-23 11:22:53,329 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:22:53,329 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:22:53,330 INFO L146 ILogger]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:22:53,330 INFO L146 ILogger]: Start difference. First operand 108 states and 109 transitions. Second operand 28 states. [2019-05-23 11:22:53,796 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:53,797 INFO L146 ILogger]: Finished difference Result 194 states and 196 transitions. [2019-05-23 11:22:53,801 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:22:53,801 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 107 [2019-05-23 11:22:53,801 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:53,802 INFO L146 ILogger]: With dead ends: 194 [2019-05-23 11:22:53,802 INFO L146 ILogger]: Without dead ends: 126 [2019-05-23 11:22:53,803 INFO L146 ILogger]: 0 DeclaredPredicates, 133 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=951, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:22:53,803 INFO L146 ILogger]: Start minimizeSevpa. Operand 126 states. [2019-05-23 11:22:53,808 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 126 to 112. [2019-05-23 11:22:53,808 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:22:53,809 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2019-05-23 11:22:53,809 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 107 [2019-05-23 11:22:53,809 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:53,810 INFO L146 ILogger]: Abstraction has 112 states and 113 transitions. [2019-05-23 11:22:53,810 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:22:53,810 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 113 transitions. [2019-05-23 11:22:53,811 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:22:53,811 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:53,811 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:53,812 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:53,812 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:53,812 INFO L146 ILogger]: Analyzing trace with hash 1410877406, now seen corresponding path program 13 times [2019-05-23 11:22:53,812 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:53,812 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:53,815 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:53,815 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:53,816 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:53,839 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:55,129 INFO L146 ILogger]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:55,130 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:55,130 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 11:22:55,139 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:55,166 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:55,168 INFO L146 ILogger]: Trace formula consists of 177 conjuncts, 59 conjunts are in the unsatisfiable core [2019-05-23 11:22:55,169 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:55,655 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:22:55,656 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:55,659 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:55,659 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:22:55,660 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:22:56,025 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:22:56,026 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:56,026 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:22:56,027 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:22:56,030 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:22:56,030 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 11:22:56,030 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:22:56,159 INFO L146 ILogger]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:56,177 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:56,178 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 31] total 52 [2019-05-23 11:22:56,178 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:22:56,178 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:22:56,179 INFO L146 ILogger]: CoverageRelationStatistics Valid=175, Invalid=2477, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:22:56,179 INFO L146 ILogger]: Start difference. First operand 112 states and 113 transitions. Second operand 52 states. [2019-05-23 11:22:56,504 WARN L146 ILogger]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2019-05-23 11:22:58,248 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:58,248 INFO L146 ILogger]: Finished difference Result 131 states and 132 transitions. [2019-05-23 11:22:58,249 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:22:58,249 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 111 [2019-05-23 11:22:58,249 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:58,250 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:22:58,251 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:22:58,252 INFO L146 ILogger]: 0 DeclaredPredicates, 157 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=400, Invalid=5300, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:22:58,253 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:22:58,257 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 120. [2019-05-23 11:22:58,257 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:22:58,258 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2019-05-23 11:22:58,258 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 111 [2019-05-23 11:22:58,258 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:58,258 INFO L146 ILogger]: Abstraction has 120 states and 121 transitions. [2019-05-23 11:22:58,259 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:22:58,259 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 121 transitions. [2019-05-23 11:22:58,260 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:22:58,260 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:58,260 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:58,260 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:58,260 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:58,260 INFO L146 ILogger]: Analyzing trace with hash 1899914419, now seen corresponding path program 14 times [2019-05-23 11:22:58,261 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:58,261 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:58,261 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:58,262 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:22:58,262 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:58,275 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:58,563 INFO L146 ILogger]: Checked inductivity of 392 backedges. 215 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:58,564 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:22:58,564 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 11:22:58,573 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:22:58,602 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:22:58,602 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:22:58,603 INFO L146 ILogger]: Trace formula consists of 189 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:22:58,605 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:22:59,082 INFO L146 ILogger]: Checked inductivity of 392 backedges. 272 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:22:59,136 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:22:59,136 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 31 [2019-05-23 11:22:59,137 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:22:59,137 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:22:59,137 INFO L146 ILogger]: CoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:22:59,138 INFO L146 ILogger]: Start difference. First operand 120 states and 121 transitions. Second operand 31 states. [2019-05-23 11:22:59,756 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:22:59,756 INFO L146 ILogger]: Finished difference Result 214 states and 216 transitions. [2019-05-23 11:22:59,757 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:22:59,757 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 119 [2019-05-23 11:22:59,757 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:22:59,759 INFO L146 ILogger]: With dead ends: 214 [2019-05-23 11:22:59,759 INFO L146 ILogger]: Without dead ends: 138 [2019-05-23 11:22:59,761 INFO L146 ILogger]: 0 DeclaredPredicates, 148 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:22:59,761 INFO L146 ILogger]: Start minimizeSevpa. Operand 138 states. [2019-05-23 11:22:59,766 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 138 to 124. [2019-05-23 11:22:59,766 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:22:59,767 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2019-05-23 11:22:59,767 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 119 [2019-05-23 11:22:59,768 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:22:59,768 INFO L146 ILogger]: Abstraction has 124 states and 125 transitions. [2019-05-23 11:22:59,768 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:22:59,768 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 125 transitions. [2019-05-23 11:22:59,769 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 124 [2019-05-23 11:22:59,769 INFO L146 ILogger]: Found error trace [2019-05-23 11:22:59,769 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:22:59,769 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:22:59,769 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:22:59,770 INFO L146 ILogger]: Analyzing trace with hash -2055671503, now seen corresponding path program 15 times [2019-05-23 11:22:59,770 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:22:59,770 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:22:59,770 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:59,771 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:22:59,771 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:22:59,788 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:00,415 INFO L146 ILogger]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:00,415 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:00,415 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 11:23:00,424 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:00,510 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:23:00,511 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:00,513 INFO L146 ILogger]: Trace formula consists of 195 conjuncts, 47 conjunts are in the unsatisfiable core [2019-05-23 11:23:00,515 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:00,587 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2019-05-23 11:23:00,588 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:00,591 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:00,592 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:00,592 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-05-23 11:23:01,005 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:23:01,007 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:01,007 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:23:01,007 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:01,012 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:01,012 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 11:23:01,012 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:23:01,112 INFO L146 ILogger]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:01,132 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:01,132 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 37 [2019-05-23 11:23:01,132 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:23:01,133 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:23:01,133 INFO L146 ILogger]: CoverageRelationStatistics Valid=121, Invalid=1211, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:01,133 INFO L146 ILogger]: Start difference. First operand 124 states and 125 transitions. Second operand 37 states. [2019-05-23 11:23:02,822 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:02,822 INFO L146 ILogger]: Finished difference Result 143 states and 144 transitions. [2019-05-23 11:23:02,822 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:23:02,822 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 123 [2019-05-23 11:23:02,823 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:02,824 INFO L146 ILogger]: With dead ends: 143 [2019-05-23 11:23:02,824 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:23:02,826 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=284, Invalid=2578, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:23:02,826 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:23:02,831 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 132. [2019-05-23 11:23:02,831 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:23:02,832 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2019-05-23 11:23:02,832 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 123 [2019-05-23 11:23:02,832 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:02,832 INFO L146 ILogger]: Abstraction has 132 states and 133 transitions. [2019-05-23 11:23:02,832 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:23:02,832 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 133 transitions. [2019-05-23 11:23:02,833 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:23:02,833 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:02,833 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:02,833 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:02,834 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:02,834 INFO L146 ILogger]: Analyzing trace with hash -2112484602, now seen corresponding path program 16 times [2019-05-23 11:23:02,834 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:02,834 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:02,835 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:02,835 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:02,835 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:02,848 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:03,420 INFO L146 ILogger]: Checked inductivity of 495 backedges. 277 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:03,420 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:03,420 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 11:23:03,430 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:03,459 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:03,460 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:03,461 INFO L146 ILogger]: Trace formula consists of 205 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:23:03,462 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:03,698 INFO L146 ILogger]: Checked inductivity of 495 backedges. 342 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:03,717 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:03,717 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 34 [2019-05-23 11:23:03,717 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:23:03,718 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:23:03,718 INFO L146 ILogger]: CoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:23:03,718 INFO L146 ILogger]: Start difference. First operand 132 states and 133 transitions. Second operand 34 states. [2019-05-23 11:23:04,217 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:04,217 INFO L146 ILogger]: Finished difference Result 234 states and 236 transitions. [2019-05-23 11:23:04,218 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:23:04,218 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 131 [2019-05-23 11:23:04,218 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:04,219 INFO L146 ILogger]: With dead ends: 234 [2019-05-23 11:23:04,219 INFO L146 ILogger]: Without dead ends: 150 [2019-05-23 11:23:04,220 INFO L146 ILogger]: 0 DeclaredPredicates, 163 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=454, Invalid=1438, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:23:04,221 INFO L146 ILogger]: Start minimizeSevpa. Operand 150 states. [2019-05-23 11:23:04,226 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 150 to 136. [2019-05-23 11:23:04,226 INFO L146 ILogger]: Start removeUnreachable. Operand 136 states. [2019-05-23 11:23:04,226 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2019-05-23 11:23:04,227 INFO L146 ILogger]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 131 [2019-05-23 11:23:04,227 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:04,227 INFO L146 ILogger]: Abstraction has 136 states and 137 transitions. [2019-05-23 11:23:04,227 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:23:04,227 INFO L146 ILogger]: Start isEmpty. Operand 136 states and 137 transitions. [2019-05-23 11:23:04,228 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 136 [2019-05-23 11:23:04,228 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:04,228 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:04,228 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:04,229 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:04,229 INFO L146 ILogger]: Analyzing trace with hash 459000452, now seen corresponding path program 17 times [2019-05-23 11:23:04,229 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:04,229 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:04,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,230 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:04,230 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,247 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,429 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:05,430 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:05,430 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:23:05,439 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:05,506 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:23:05,506 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,511 INFO L146 ILogger]: Trace formula consists of 213 conjuncts, 51 conjunts are in the unsatisfiable core [2019-05-23 11:23:05,513 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:05,887 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:23:05,887 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:05,891 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:05,891 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:05,891 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:23:06,470 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:23:06,497 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:06,497 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:23:06,498 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:06,527 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:06,527 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 11:23:06,528 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:23:06,664 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:06,683 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:06,684 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2019-05-23 11:23:06,684 INFO L146 ILogger]: Interpolant automaton has 52 states [2019-05-23 11:23:06,685 INFO L146 ILogger]: Constructing interpolant automaton starting with 52 interpolants. [2019-05-23 11:23:06,685 INFO L146 ILogger]: CoverageRelationStatistics Valid=169, Invalid=2483, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:23:06,686 INFO L146 ILogger]: Start difference. First operand 136 states and 137 transitions. Second operand 52 states. [2019-05-23 11:23:09,154 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:09,154 INFO L146 ILogger]: Finished difference Result 155 states and 156 transitions. [2019-05-23 11:23:09,155 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:23:09,155 INFO L146 ILogger]: Start accepts. Automaton has 52 states. Word has length 135 [2019-05-23 11:23:09,155 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:09,156 INFO L146 ILogger]: With dead ends: 155 [2019-05-23 11:23:09,156 INFO L146 ILogger]: Without dead ends: 153 [2019-05-23 11:23:09,158 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=367, Invalid=4603, Unknown=0, NotChecked=0, Total=4970 [2019-05-23 11:23:09,159 INFO L146 ILogger]: Start minimizeSevpa. Operand 153 states. [2019-05-23 11:23:09,164 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 153 to 144. [2019-05-23 11:23:09,167 INFO L146 ILogger]: Start removeUnreachable. Operand 144 states. [2019-05-23 11:23:09,167 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2019-05-23 11:23:09,168 INFO L146 ILogger]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 135 [2019-05-23 11:23:09,168 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:09,168 INFO L146 ILogger]: Abstraction has 144 states and 145 transitions. [2019-05-23 11:23:09,168 INFO L146 ILogger]: Interpolant automaton has 52 states. [2019-05-23 11:23:09,168 INFO L146 ILogger]: Start isEmpty. Operand 144 states and 145 transitions. [2019-05-23 11:23:09,169 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:23:09,169 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:09,169 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:09,170 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:09,170 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:09,170 INFO L146 ILogger]: Analyzing trace with hash 708829529, now seen corresponding path program 18 times [2019-05-23 11:23:09,170 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:09,170 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:09,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,171 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:09,171 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,188 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:09,747 INFO L146 ILogger]: Checked inductivity of 610 backedges. 347 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:09,748 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:09,748 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 11:23:09,757 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:09,856 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:23:09,856 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:09,858 INFO L146 ILogger]: Trace formula consists of 225 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:23:09,859 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:10,178 INFO L146 ILogger]: Checked inductivity of 610 backedges. 420 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:10,198 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:10,198 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 37 [2019-05-23 11:23:10,199 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:23:10,199 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:23:10,200 INFO L146 ILogger]: CoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:10,200 INFO L146 ILogger]: Start difference. First operand 144 states and 145 transitions. Second operand 37 states. [2019-05-23 11:23:10,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:10,722 INFO L146 ILogger]: Finished difference Result 254 states and 256 transitions. [2019-05-23 11:23:10,723 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:10,723 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 143 [2019-05-23 11:23:10,724 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:10,725 INFO L146 ILogger]: With dead ends: 254 [2019-05-23 11:23:10,725 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:23:10,726 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=537, Invalid=1719, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:23:10,727 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:23:10,732 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 148. [2019-05-23 11:23:10,732 INFO L146 ILogger]: Start removeUnreachable. Operand 148 states. [2019-05-23 11:23:10,733 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2019-05-23 11:23:10,733 INFO L146 ILogger]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 143 [2019-05-23 11:23:10,733 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:10,733 INFO L146 ILogger]: Abstraction has 148 states and 149 transitions. [2019-05-23 11:23:10,733 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:23:10,733 INFO L146 ILogger]: Start isEmpty. Operand 148 states and 149 transitions. [2019-05-23 11:23:10,734 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 148 [2019-05-23 11:23:10,734 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:10,734 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:10,734 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:10,734 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:10,735 INFO L146 ILogger]: Analyzing trace with hash 710693847, now seen corresponding path program 19 times [2019-05-23 11:23:10,735 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:10,735 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:10,735 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,735 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:10,736 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:10,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:11,350 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:11,350 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:11,350 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 11:23:11,360 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:11,394 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:11,396 INFO L146 ILogger]: Trace formula consists of 231 conjuncts, 77 conjunts are in the unsatisfiable core [2019-05-23 11:23:11,398 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:12,353 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:23:12,353 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:12,426 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:12,426 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:12,426 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-05-23 11:23:13,001 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:23:13,003 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:13,004 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:23:13,004 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:13,008 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:13,008 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 11:23:13,009 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:23:13,187 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:13,206 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:13,207 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 40] total 67 [2019-05-23 11:23:13,207 INFO L146 ILogger]: Interpolant automaton has 67 states [2019-05-23 11:23:13,207 INFO L146 ILogger]: Constructing interpolant automaton starting with 67 interpolants. [2019-05-23 11:23:13,208 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=4193, Unknown=0, NotChecked=0, Total=4422 [2019-05-23 11:23:13,209 INFO L146 ILogger]: Start difference. First operand 148 states and 149 transitions. Second operand 67 states. [2019-05-23 11:23:17,615 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:17,616 INFO L146 ILogger]: Finished difference Result 167 states and 168 transitions. [2019-05-23 11:23:17,616 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:23:17,616 INFO L146 ILogger]: Start accepts. Automaton has 67 states. Word has length 147 [2019-05-23 11:23:17,617 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:17,617 INFO L146 ILogger]: With dead ends: 167 [2019-05-23 11:23:17,617 INFO L146 ILogger]: Without dead ends: 165 [2019-05-23 11:23:17,619 INFO L146 ILogger]: 0 DeclaredPredicates, 205 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2239 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=499, Invalid=8813, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:23:17,619 INFO L146 ILogger]: Start minimizeSevpa. Operand 165 states. [2019-05-23 11:23:17,625 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 165 to 156. [2019-05-23 11:23:17,625 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:23:17,625 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2019-05-23 11:23:17,626 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 147 [2019-05-23 11:23:17,626 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:17,626 INFO L146 ILogger]: Abstraction has 156 states and 157 transitions. [2019-05-23 11:23:17,626 INFO L146 ILogger]: Interpolant automaton has 67 states. [2019-05-23 11:23:17,626 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 157 transitions. [2019-05-23 11:23:17,627 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 156 [2019-05-23 11:23:17,627 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:17,627 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:17,627 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:17,628 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:17,628 INFO L146 ILogger]: Analyzing trace with hash -354981972, now seen corresponding path program 20 times [2019-05-23 11:23:17,628 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:17,628 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:17,629 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:17,629 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:17,629 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:17,643 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:18,105 INFO L146 ILogger]: Checked inductivity of 737 backedges. 425 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:18,105 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:18,105 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 11:23:18,114 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:18,156 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:18,157 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:18,158 INFO L146 ILogger]: Trace formula consists of 243 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:23:18,159 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:18,494 INFO L146 ILogger]: Checked inductivity of 737 backedges. 506 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:18,513 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:18,513 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 40 [2019-05-23 11:23:18,514 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:23:18,514 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:23:18,514 INFO L146 ILogger]: CoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:18,514 INFO L146 ILogger]: Start difference. First operand 156 states and 157 transitions. Second operand 40 states. [2019-05-23 11:23:19,015 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:19,015 INFO L146 ILogger]: Finished difference Result 274 states and 276 transitions. [2019-05-23 11:23:19,018 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:23:19,018 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 155 [2019-05-23 11:23:19,019 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:19,020 INFO L146 ILogger]: With dead ends: 274 [2019-05-23 11:23:19,020 INFO L146 ILogger]: Without dead ends: 174 [2019-05-23 11:23:19,020 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=627, Invalid=2025, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:23:19,021 INFO L146 ILogger]: Start minimizeSevpa. Operand 174 states. [2019-05-23 11:23:19,025 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 174 to 160. [2019-05-23 11:23:19,025 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:23:19,025 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2019-05-23 11:23:19,026 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 155 [2019-05-23 11:23:19,026 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:19,026 INFO L146 ILogger]: Abstraction has 160 states and 161 transitions. [2019-05-23 11:23:19,026 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:23:19,026 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 161 transitions. [2019-05-23 11:23:19,026 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 160 [2019-05-23 11:23:19,026 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:19,027 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:19,027 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:19,027 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:19,027 INFO L146 ILogger]: Analyzing trace with hash 1582697770, now seen corresponding path program 21 times [2019-05-23 11:23:19,027 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:19,027 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:19,028 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:19,028 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:19,028 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:19,046 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:20,251 INFO L146 ILogger]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:20,251 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:20,251 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 11:23:20,259 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:20,471 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2019-05-23 11:23:20,472 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:20,475 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 67 conjunts are in the unsatisfiable core [2019-05-23 11:23:20,478 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:20,902 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2019-05-23 11:23:20,902 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:20,913 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:20,913 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:20,913 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-05-23 11:23:20,995 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:23:20,996 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:23:20,996 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:21,004 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:21,004 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:21,005 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-05-23 11:23:21,971 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:23:21,971 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:23:21,973 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:21,973 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 13 [2019-05-23 11:23:21,973 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:21,977 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:21,977 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 11:23:21,977 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:7 [2019-05-23 11:23:22,188 INFO L146 ILogger]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:22,208 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:22,208 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 35] total 64 [2019-05-23 11:23:22,209 INFO L146 ILogger]: Interpolant automaton has 64 states [2019-05-23 11:23:22,209 INFO L146 ILogger]: Constructing interpolant automaton starting with 64 interpolants. [2019-05-23 11:23:22,210 INFO L146 ILogger]: CoverageRelationStatistics Valid=242, Invalid=3790, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:23:22,210 INFO L146 ILogger]: Start difference. First operand 160 states and 161 transitions. Second operand 64 states. [2019-05-23 11:23:25,607 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:25,607 INFO L146 ILogger]: Finished difference Result 179 states and 180 transitions. [2019-05-23 11:23:25,607 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-05-23 11:23:25,607 INFO L146 ILogger]: Start accepts. Automaton has 64 states. Word has length 159 [2019-05-23 11:23:25,608 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:25,609 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:23:25,609 INFO L146 ILogger]: Without dead ends: 177 [2019-05-23 11:23:25,610 INFO L146 ILogger]: 0 DeclaredPredicates, 212 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=517, Invalid=6965, Unknown=0, NotChecked=0, Total=7482 [2019-05-23 11:23:25,610 INFO L146 ILogger]: Start minimizeSevpa. Operand 177 states. [2019-05-23 11:23:25,616 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 177 to 168. [2019-05-23 11:23:25,617 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:23:25,617 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2019-05-23 11:23:25,617 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 159 [2019-05-23 11:23:25,618 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:25,618 INFO L146 ILogger]: Abstraction has 168 states and 169 transitions. [2019-05-23 11:23:25,618 INFO L146 ILogger]: Interpolant automaton has 64 states. [2019-05-23 11:23:25,618 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 169 transitions. [2019-05-23 11:23:25,619 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 168 [2019-05-23 11:23:25,619 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:25,619 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:25,620 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:25,620 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:25,620 INFO L146 ILogger]: Analyzing trace with hash -1674043905, now seen corresponding path program 22 times [2019-05-23 11:23:25,620 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:25,620 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:25,621 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,621 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:25,621 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,636 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,025 INFO L146 ILogger]: Checked inductivity of 876 backedges. 511 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:26,025 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:26,026 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 11:23:26,035 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:26,072 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:26,072 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,074 INFO L146 ILogger]: Trace formula consists of 259 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:23:26,076 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:26,556 INFO L146 ILogger]: Checked inductivity of 876 backedges. 600 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:26,575 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:26,575 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 43 [2019-05-23 11:23:26,575 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:23:26,576 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:23:26,576 INFO L146 ILogger]: CoverageRelationStatistics Valid=425, Invalid=1381, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:23:26,576 INFO L146 ILogger]: Start difference. First operand 168 states and 169 transitions. Second operand 43 states. [2019-05-23 11:23:28,041 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:28,042 INFO L146 ILogger]: Finished difference Result 294 states and 296 transitions. [2019-05-23 11:23:28,042 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:28,042 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 167 [2019-05-23 11:23:28,043 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:28,043 INFO L146 ILogger]: With dead ends: 294 [2019-05-23 11:23:28,043 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:23:28,044 INFO L146 ILogger]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2019-05-23 11:23:28,044 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:23:28,050 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 172. [2019-05-23 11:23:28,050 INFO L146 ILogger]: Start removeUnreachable. Operand 172 states. [2019-05-23 11:23:28,051 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2019-05-23 11:23:28,051 INFO L146 ILogger]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 167 [2019-05-23 11:23:28,051 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:28,051 INFO L146 ILogger]: Abstraction has 172 states and 173 transitions. [2019-05-23 11:23:28,051 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:23:28,052 INFO L146 ILogger]: Start isEmpty. Operand 172 states and 173 transitions. [2019-05-23 11:23:28,052 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 172 [2019-05-23 11:23:28,052 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:28,053 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:28,053 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:28,053 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:28,053 INFO L146 ILogger]: Analyzing trace with hash -1704692099, now seen corresponding path program 23 times [2019-05-23 11:23:28,053 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:28,054 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:28,054 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:28,054 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:28,054 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:28,090 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,140 INFO L146 ILogger]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:29,140 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:29,140 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:29,150 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:29,244 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2019-05-23 11:23:29,245 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,247 INFO L146 ILogger]: Trace formula consists of 267 conjuncts, 63 conjunts are in the unsatisfiable core [2019-05-23 11:23:29,250 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:30,029 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2019-05-23 11:23:30,030 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:30,036 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:30,037 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:23:30,037 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2019-05-23 11:23:30,727 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:23:30,729 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:30,729 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2019-05-23 11:23:30,730 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:23:30,733 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:23:30,733 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 11:23:30,733 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2019-05-23 11:23:30,875 INFO L146 ILogger]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:30,895 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:30,895 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 49 [2019-05-23 11:23:30,895 INFO L146 ILogger]: Interpolant automaton has 49 states [2019-05-23 11:23:30,895 INFO L146 ILogger]: Constructing interpolant automaton starting with 49 interpolants. [2019-05-23 11:23:30,896 INFO L146 ILogger]: CoverageRelationStatistics Valid=165, Invalid=2187, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:23:30,896 INFO L146 ILogger]: Start difference. First operand 172 states and 173 transitions. Second operand 49 states. [2019-05-23 11:23:34,135 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:34,136 INFO L146 ILogger]: Finished difference Result 191 states and 192 transitions. [2019-05-23 11:23:34,136 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:23:34,136 INFO L146 ILogger]: Start accepts. Automaton has 49 states. Word has length 171 [2019-05-23 11:23:34,137 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:34,138 INFO L146 ILogger]: With dead ends: 191 [2019-05-23 11:23:34,138 INFO L146 ILogger]: Without dead ends: 189 [2019-05-23 11:23:34,139 INFO L146 ILogger]: 0 DeclaredPredicates, 225 GetRequests, 148 SyntacticMatches, 9 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=360, Invalid=4470, Unknown=0, NotChecked=0, Total=4830 [2019-05-23 11:23:34,139 INFO L146 ILogger]: Start minimizeSevpa. Operand 189 states. [2019-05-23 11:23:34,146 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 189 to 180. [2019-05-23 11:23:34,147 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:23:34,147 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2019-05-23 11:23:34,147 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 171 [2019-05-23 11:23:34,148 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:34,148 INFO L146 ILogger]: Abstraction has 180 states and 181 transitions. [2019-05-23 11:23:34,148 INFO L146 ILogger]: Interpolant automaton has 49 states. [2019-05-23 11:23:34,148 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 181 transitions. [2019-05-23 11:23:34,149 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:23:34,149 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:34,149 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:34,149 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:34,150 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:34,150 INFO L146 ILogger]: Analyzing trace with hash 234718290, now seen corresponding path program 24 times [2019-05-23 11:23:34,150 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:34,150 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:34,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:34,151 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:34,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:34,167 INFO L146 ILogger]: Conjunction of SSA is unsat