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/reducercommutativity/sep20_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:23:59,900 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:23:59,902 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:23:59,913 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:23:59,914 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:23:59,915 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:23:59,916 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:23:59,918 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:23:59,919 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:23:59,920 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:23:59,921 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:23:59,921 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:23:59,922 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:23:59,923 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:23:59,924 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:23:59,925 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:23:59,926 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:23:59,928 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:23:59,930 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:23:59,932 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:23:59,933 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:23:59,934 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:23:59,937 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:23:59,937 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:23:59,937 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:23:59,941 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:23:59,942 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:23:59,943 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:23:59,943 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:23:59,944 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:23:59,945 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:23:59,951 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:23:59,952 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:23:59,952 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:23:59,953 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:23:59,953 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:23:59,953 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:23:59,956 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:23:59,956 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:23:59,957 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:23:59,978 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:23:59,979 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:23:59,980 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:23:59,980 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:23:59,980 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:23:59,981 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:23:59,981 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:23:59,982 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:23:59,982 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:23:59,982 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:23:59,982 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:23:59,982 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:23:59,983 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:23:59,983 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:23:59,983 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:23:59,983 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:23:59,983 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:23:59,985 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:23:59,985 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:23:59,985 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:23:59,985 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:23:59,986 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:23:59,986 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:23:59,986 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:23:59,986 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:23:59,986 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:23:59,987 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:23:59,987 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:23:59,987 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 11:24:00,029 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:24:00,040 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:24:00,044 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:24:00,046 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:24:00,046 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:24:00,047 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/sep20_true-unreach-call.i [2019-05-23 11:24:00,109 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e74ee40/20657af35563443c93ccffc197bf281d/FLAG186235d24 [2019-05-23 11:24:00,476 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:24:00,477 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/sep20_true-unreach-call.i [2019-05-23 11:24:00,483 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e74ee40/20657af35563443c93ccffc197bf281d/FLAG186235d24 [2019-05-23 11:24:00,860 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09e74ee40/20657af35563443c93ccffc197bf281d [2019-05-23 11:24:00,869 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:24:00,870 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:24:00,871 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:00,872 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:24:00,875 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:24:00,876 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:00" (1/1) ... [2019-05-23 11:24:00,878 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17036e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:00, skipping insertion in model container [2019-05-23 11:24:00,879 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:00" (1/1) ... [2019-05-23 11:24:00,886 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:24:00,909 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:24:01,142 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:01,159 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:24:01,190 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:01,212 INFO L146 ILogger]: Completed translation [2019-05-23 11:24:01,213 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01 WrapperNode [2019-05-23 11:24:01,213 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:01,214 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:01,215 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:24:01,215 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:24:01,224 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,234 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,263 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:01,263 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:24:01,263 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:24:01,263 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:24:01,272 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,273 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,275 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,276 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,283 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,375 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,379 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (1/1) ... [2019-05-23 11:24:01,384 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:24:01,384 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:24:01,384 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:24:01,384 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:24:01,385 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (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 11:24:01,430 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:24:01,431 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:24:01,431 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:24:01,431 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:24:01,431 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:24:01,431 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:02,234 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:02,234 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:24:02,235 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:02 BoogieIcfgContainer [2019-05-23 11:24:02,236 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:02,237 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:02,237 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:02,240 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:02,240 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:24:00" (1/3) ... [2019-05-23 11:24:02,241 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fff34fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:02, skipping insertion in model container [2019-05-23 11:24:02,241 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:01" (2/3) ... [2019-05-23 11:24:02,242 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fff34fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:02, skipping insertion in model container [2019-05-23 11:24:02,242 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:02" (3/3) ... [2019-05-23 11:24:02,243 INFO L146 ILogger]: Analyzing ICFG sep20_true-unreach-call.i [2019-05-23 11:24:02,252 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:02,258 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:02,271 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:02,298 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:02,298 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:02,299 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:02,299 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:02,299 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:02,299 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:02,299 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:02,299 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:02,300 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:02,315 INFO L146 ILogger]: Start isEmpty. Operand 120 states. [2019-05-23 11:24:02,323 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:24:02,323 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:02,324 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:02,326 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:02,331 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:02,331 INFO L146 ILogger]: Analyzing trace with hash -1539618111, now seen corresponding path program 1 times [2019-05-23 11:24:02,333 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:02,333 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:02,385 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:02,386 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:02,386 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:02,432 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:02,511 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 11:24:02,514 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:02,515 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:24:02,518 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:24:02,531 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:24:02,532 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:02,534 INFO L146 ILogger]: Start difference. First operand 120 states. Second operand 3 states. [2019-05-23 11:24:02,608 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:02,608 INFO L146 ILogger]: Finished difference Result 229 states and 255 transitions. [2019-05-23 11:24:02,609 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:24:02,610 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 62 [2019-05-23 11:24:02,611 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:02,622 INFO L146 ILogger]: With dead ends: 229 [2019-05-23 11:24:02,622 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:24:02,625 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:02,639 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:24:02,662 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 115. [2019-05-23 11:24:02,663 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:24:02,665 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2019-05-23 11:24:02,667 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 62 [2019-05-23 11:24:02,667 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:02,668 INFO L146 ILogger]: Abstraction has 115 states and 122 transitions. [2019-05-23 11:24:02,668 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:24:02,668 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 122 transitions. [2019-05-23 11:24:02,671 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:24:02,671 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:02,671 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:02,672 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:02,672 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:02,672 INFO L146 ILogger]: Analyzing trace with hash -866477706, now seen corresponding path program 1 times [2019-05-23 11:24:02,672 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:02,673 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:02,674 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:02,674 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:02,674 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:02,698 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:02,837 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 11:24:02,837 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:02,838 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 11:24:02,857 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:02,912 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:02,914 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:02,922 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:03,053 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:03,083 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:03,083 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:03,087 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:03,088 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:03,088 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:03,088 INFO L146 ILogger]: Start difference. First operand 115 states and 122 transitions. Second operand 6 states. [2019-05-23 11:24:03,566 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:03,567 INFO L146 ILogger]: Finished difference Result 263 states and 283 transitions. [2019-05-23 11:24:03,568 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:03,568 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 69 [2019-05-23 11:24:03,568 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:03,570 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:24:03,571 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:24:03,572 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:03,573 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:24:03,595 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 125. [2019-05-23 11:24:03,595 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:24:03,597 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2019-05-23 11:24:03,597 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 69 [2019-05-23 11:24:03,597 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:03,597 INFO L146 ILogger]: Abstraction has 125 states and 132 transitions. [2019-05-23 11:24:03,597 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:03,598 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 132 transitions. [2019-05-23 11:24:03,601 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:24:03,601 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:03,602 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:24:03,602 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:03,602 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:03,602 INFO L146 ILogger]: Analyzing trace with hash -1426784878, now seen corresponding path program 1 times [2019-05-23 11:24:03,603 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:03,603 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:03,604 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:03,604 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:03,604 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:03,637 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:03,758 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:24:03,759 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:03,759 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 11:24:03,775 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:03,819 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:03,821 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:03,825 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:03,958 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:24:03,987 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:03,988 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:03,989 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:03,989 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:03,989 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:03,989 INFO L146 ILogger]: Start difference. First operand 125 states and 132 transitions. Second operand 6 states. [2019-05-23 11:24:04,674 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:04,675 INFO L146 ILogger]: Finished difference Result 288 states and 309 transitions. [2019-05-23 11:24:04,675 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:04,675 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 106 [2019-05-23 11:24:04,676 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:04,678 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:24:04,678 INFO L146 ILogger]: Without dead ends: 209 [2019-05-23 11:24:04,679 INFO L146 ILogger]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:04,679 INFO L146 ILogger]: Start minimizeSevpa. Operand 209 states. [2019-05-23 11:24:04,690 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 209 to 168. [2019-05-23 11:24:04,691 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:24:04,692 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2019-05-23 11:24:04,692 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 106 [2019-05-23 11:24:04,694 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:04,694 INFO L146 ILogger]: Abstraction has 168 states and 178 transitions. [2019-05-23 11:24:04,694 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:04,694 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 178 transitions. [2019-05-23 11:24:04,697 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:24:04,698 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:04,699 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:04,699 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:04,699 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:04,700 INFO L146 ILogger]: Analyzing trace with hash 303794939, now seen corresponding path program 1 times [2019-05-23 11:24:04,700 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:04,700 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:04,701 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:04,701 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:04,701 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:04,777 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:04,926 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:24:04,926 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:04,926 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 11:24:04,937 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:04,997 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:04,999 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:05,005 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:05,256 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-05-23 11:24:05,277 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:05,277 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:24:05,278 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:24:05,278 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:24:05,278 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:24:05,278 INFO L146 ILogger]: Start difference. First operand 168 states and 178 transitions. Second operand 10 states. [2019-05-23 11:24:05,646 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:05,647 INFO L146 ILogger]: Finished difference Result 335 states and 356 transitions. [2019-05-23 11:24:05,648 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:24:05,648 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 143 [2019-05-23 11:24:05,648 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:05,649 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:24:05,650 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:24:05,651 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:05,651 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:24:05,661 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 182. [2019-05-23 11:24:05,662 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:24:05,663 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2019-05-23 11:24:05,663 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 143 [2019-05-23 11:24:05,663 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:05,663 INFO L146 ILogger]: Abstraction has 182 states and 192 transitions. [2019-05-23 11:24:05,664 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:24:05,664 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 192 transitions. [2019-05-23 11:24:05,666 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:24:05,666 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:05,667 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:05,667 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:05,667 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:05,667 INFO L146 ILogger]: Analyzing trace with hash 1916510114, now seen corresponding path program 2 times [2019-05-23 11:24:05,667 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:05,668 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:05,668 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:05,669 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:05,669 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:05,706 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:05,904 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:24:05,904 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:05,904 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 11:24:05,914 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:05,984 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:05,984 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:05,985 INFO L146 ILogger]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:05,995 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:06,305 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:24:06,325 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:06,325 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-05-23 11:24:06,326 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:24:06,326 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:24:06,326 INFO L146 ILogger]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:24:06,327 INFO L146 ILogger]: Start difference. First operand 182 states and 192 transitions. Second operand 14 states. [2019-05-23 11:24:06,903 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:06,903 INFO L146 ILogger]: Finished difference Result 422 states and 451 transitions. [2019-05-23 11:24:06,904 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:24:06,904 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 157 [2019-05-23 11:24:06,905 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:06,907 INFO L146 ILogger]: With dead ends: 422 [2019-05-23 11:24:06,907 INFO L146 ILogger]: Without dead ends: 272 [2019-05-23 11:24:06,909 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:24:06,910 INFO L146 ILogger]: Start minimizeSevpa. Operand 272 states. [2019-05-23 11:24:06,935 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 272 to 231. [2019-05-23 11:24:06,935 INFO L146 ILogger]: Start removeUnreachable. Operand 231 states. [2019-05-23 11:24:06,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 231 states to 231 states and 244 transitions. [2019-05-23 11:24:06,938 INFO L146 ILogger]: Start accepts. Automaton has 231 states and 244 transitions. Word has length 157 [2019-05-23 11:24:06,938 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:06,938 INFO L146 ILogger]: Abstraction has 231 states and 244 transitions. [2019-05-23 11:24:06,938 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:24:06,938 INFO L146 ILogger]: Start isEmpty. Operand 231 states and 244 transitions. [2019-05-23 11:24:06,943 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:24:06,943 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:06,944 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:06,944 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:06,944 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:06,944 INFO L146 ILogger]: Analyzing trace with hash -27182914, now seen corresponding path program 3 times [2019-05-23 11:24:06,945 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:06,945 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:06,945 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:06,946 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:06,946 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:06,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:07,161 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-05-23 11:24:07,161 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:07,161 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:24:07,171 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:07,239 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:24:07,239 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:07,240 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:07,245 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:07,370 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:24:07,390 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:07,390 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:24:07,391 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:24:07,391 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:24:07,392 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:07,392 INFO L146 ILogger]: Start difference. First operand 231 states and 244 transitions. Second operand 16 states. [2019-05-23 11:24:07,691 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:07,692 INFO L146 ILogger]: Finished difference Result 447 states and 474 transitions. [2019-05-23 11:24:07,695 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:24:07,695 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 194 [2019-05-23 11:24:07,696 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:07,697 INFO L146 ILogger]: With dead ends: 447 [2019-05-23 11:24:07,697 INFO L146 ILogger]: Without dead ends: 255 [2019-05-23 11:24:07,699 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:24:07,701 INFO L146 ILogger]: Start minimizeSevpa. Operand 255 states. [2019-05-23 11:24:07,715 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 255 to 245. [2019-05-23 11:24:07,716 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:24:07,719 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 258 transitions. [2019-05-23 11:24:07,719 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 258 transitions. Word has length 194 [2019-05-23 11:24:07,719 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:07,719 INFO L146 ILogger]: Abstraction has 245 states and 258 transitions. [2019-05-23 11:24:07,719 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:24:07,720 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 258 transitions. [2019-05-23 11:24:07,722 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:24:07,722 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:07,723 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:07,723 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:07,724 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:07,724 INFO L146 ILogger]: Analyzing trace with hash -181774217, now seen corresponding path program 4 times [2019-05-23 11:24:07,724 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:07,724 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:07,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:07,725 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:07,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:07,800 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,032 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:08,033 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:08,033 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 11:24:08,043 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:08,123 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:08,123 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,125 INFO L146 ILogger]: Trace formula consists of 332 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:08,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:08,229 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:08,248 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:08,248 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:08,249 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:08,249 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:08,249 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:08,249 INFO L146 ILogger]: Start difference. First operand 245 states and 258 transitions. Second operand 15 states. [2019-05-23 11:24:08,465 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:08,466 INFO L146 ILogger]: Finished difference Result 456 states and 482 transitions. [2019-05-23 11:24:08,473 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:08,473 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 208 [2019-05-23 11:24:08,473 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:08,475 INFO L146 ILogger]: With dead ends: 456 [2019-05-23 11:24:08,475 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:24:08,476 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:08,476 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:24:08,482 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 252. [2019-05-23 11:24:08,482 INFO L146 ILogger]: Start removeUnreachable. Operand 252 states. [2019-05-23 11:24:08,483 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 252 states to 252 states and 265 transitions. [2019-05-23 11:24:08,483 INFO L146 ILogger]: Start accepts. Automaton has 252 states and 265 transitions. Word has length 208 [2019-05-23 11:24:08,484 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:08,484 INFO L146 ILogger]: Abstraction has 252 states and 265 transitions. [2019-05-23 11:24:08,484 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:08,484 INFO L146 ILogger]: Start isEmpty. Operand 252 states and 265 transitions. [2019-05-23 11:24:08,488 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:24:08,488 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:08,489 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:08,489 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:08,489 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:08,490 INFO L146 ILogger]: Analyzing trace with hash 2119176513, now seen corresponding path program 5 times [2019-05-23 11:24:08,491 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:08,491 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:08,492 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,492 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:08,492 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,525 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:09,037 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:09,037 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:09,037 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 11:24:09,046 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:09,127 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:24:09,128 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:09,129 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:09,132 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:09,278 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2019-05-23 11:24:09,310 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:09,310 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:24:09,312 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:09,312 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:09,313 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:09,313 INFO L146 ILogger]: Start difference. First operand 252 states and 265 transitions. Second operand 22 states. [2019-05-23 11:24:10,121 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:10,122 INFO L146 ILogger]: Finished difference Result 541 states and 576 transitions. [2019-05-23 11:24:10,127 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:10,127 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:24:10,128 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:10,129 INFO L146 ILogger]: With dead ends: 541 [2019-05-23 11:24:10,129 INFO L146 ILogger]: Without dead ends: 342 [2019-05-23 11:24:10,131 INFO L146 ILogger]: 0 DeclaredPredicates, 253 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:10,131 INFO L146 ILogger]: Start minimizeSevpa. Operand 342 states. [2019-05-23 11:24:10,137 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 342 to 301. [2019-05-23 11:24:10,137 INFO L146 ILogger]: Start removeUnreachable. Operand 301 states. [2019-05-23 11:24:10,138 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 301 states to 301 states and 317 transitions. [2019-05-23 11:24:10,138 INFO L146 ILogger]: Start accepts. Automaton has 301 states and 317 transitions. Word has length 215 [2019-05-23 11:24:10,139 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:10,139 INFO L146 ILogger]: Abstraction has 301 states and 317 transitions. [2019-05-23 11:24:10,139 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:10,139 INFO L146 ILogger]: Start isEmpty. Operand 301 states and 317 transitions. [2019-05-23 11:24:10,142 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 253 [2019-05-23 11:24:10,142 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:10,142 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:10,143 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:10,143 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:10,143 INFO L146 ILogger]: Analyzing trace with hash 1502036637, now seen corresponding path program 6 times [2019-05-23 11:24:10,143 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:10,143 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:10,144 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,144 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:10,144 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,175 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:10,412 INFO L146 ILogger]: Checked inductivity of 370 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-05-23 11:24:10,413 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:10,413 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 11:24:10,422 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:10,601 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:24:10,602 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:10,603 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:10,606 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:10,898 INFO L146 ILogger]: Checked inductivity of 370 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2019-05-23 11:24:10,918 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:10,918 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-05-23 11:24:10,919 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:24:10,919 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:24:10,919 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:24:10,920 INFO L146 ILogger]: Start difference. First operand 301 states and 317 transitions. Second operand 24 states. [2019-05-23 11:24:11,765 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:11,766 INFO L146 ILogger]: Finished difference Result 566 states and 599 transitions. [2019-05-23 11:24:11,766 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:24:11,766 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 252 [2019-05-23 11:24:11,767 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:11,768 INFO L146 ILogger]: With dead ends: 566 [2019-05-23 11:24:11,768 INFO L146 ILogger]: Without dead ends: 325 [2019-05-23 11:24:11,769 INFO L146 ILogger]: 0 DeclaredPredicates, 288 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=395, Invalid=1497, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:24:11,770 INFO L146 ILogger]: Start minimizeSevpa. Operand 325 states. [2019-05-23 11:24:11,775 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 325 to 315. [2019-05-23 11:24:11,775 INFO L146 ILogger]: Start removeUnreachable. Operand 315 states. [2019-05-23 11:24:11,776 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 315 states to 315 states and 331 transitions. [2019-05-23 11:24:11,776 INFO L146 ILogger]: Start accepts. Automaton has 315 states and 331 transitions. Word has length 252 [2019-05-23 11:24:11,776 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:11,776 INFO L146 ILogger]: Abstraction has 315 states and 331 transitions. [2019-05-23 11:24:11,777 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:24:11,777 INFO L146 ILogger]: Start isEmpty. Operand 315 states and 331 transitions. [2019-05-23 11:24:11,779 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 267 [2019-05-23 11:24:11,780 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:11,780 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:11,780 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:11,780 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:11,781 INFO L146 ILogger]: Analyzing trace with hash 745701892, now seen corresponding path program 7 times [2019-05-23 11:24:11,781 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:11,781 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:11,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,782 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:11,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,085 INFO L146 ILogger]: Checked inductivity of 442 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:12,086 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:12,086 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 11:24:12,098 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:12,169 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,171 INFO L146 ILogger]: Trace formula consists of 417 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:12,175 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:12,287 INFO L146 ILogger]: Checked inductivity of 442 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:12,307 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:12,307 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:12,308 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:12,308 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:12,309 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:12,309 INFO L146 ILogger]: Start difference. First operand 315 states and 331 transitions. Second operand 21 states. [2019-05-23 11:24:12,642 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:12,643 INFO L146 ILogger]: Finished difference Result 575 states and 607 transitions. [2019-05-23 11:24:12,643 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:12,643 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 266 [2019-05-23 11:24:12,643 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:12,645 INFO L146 ILogger]: With dead ends: 575 [2019-05-23 11:24:12,645 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:24:12,646 INFO L146 ILogger]: 0 DeclaredPredicates, 300 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:12,646 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:24:12,652 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 322. [2019-05-23 11:24:12,652 INFO L146 ILogger]: Start removeUnreachable. Operand 322 states. [2019-05-23 11:24:12,653 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 322 states to 322 states and 338 transitions. [2019-05-23 11:24:12,653 INFO L146 ILogger]: Start accepts. Automaton has 322 states and 338 transitions. Word has length 266 [2019-05-23 11:24:12,653 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:12,653 INFO L146 ILogger]: Abstraction has 322 states and 338 transitions. [2019-05-23 11:24:12,654 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:12,654 INFO L146 ILogger]: Start isEmpty. Operand 322 states and 338 transitions. [2019-05-23 11:24:12,655 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 274 [2019-05-23 11:24:12,655 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:12,655 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:12,656 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:12,656 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:12,656 INFO L146 ILogger]: Analyzing trace with hash -403322290, now seen corresponding path program 8 times [2019-05-23 11:24:12,656 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:12,656 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:12,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:12,657 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:12,657 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:12,690 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:13,431 INFO L146 ILogger]: Checked inductivity of 499 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:13,431 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:13,431 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:24:13,440 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:13,512 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:13,512 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:13,514 INFO L146 ILogger]: Trace formula consists of 427 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:13,516 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:13,625 INFO L146 ILogger]: Checked inductivity of 499 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:13,644 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:13,645 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:13,645 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:13,645 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:13,646 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:13,646 INFO L146 ILogger]: Start difference. First operand 322 states and 338 transitions. Second operand 23 states. [2019-05-23 11:24:14,781 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:14,781 INFO L146 ILogger]: Finished difference Result 582 states and 614 transitions. [2019-05-23 11:24:14,784 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:14,784 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 273 [2019-05-23 11:24:14,784 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:14,786 INFO L146 ILogger]: With dead ends: 582 [2019-05-23 11:24:14,786 INFO L146 ILogger]: Without dead ends: 334 [2019-05-23 11:24:14,787 INFO L146 ILogger]: 0 DeclaredPredicates, 311 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:14,788 INFO L146 ILogger]: Start minimizeSevpa. Operand 334 states. [2019-05-23 11:24:14,793 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 334 to 329. [2019-05-23 11:24:14,793 INFO L146 ILogger]: Start removeUnreachable. Operand 329 states. [2019-05-23 11:24:14,794 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 329 states to 329 states and 345 transitions. [2019-05-23 11:24:14,794 INFO L146 ILogger]: Start accepts. Automaton has 329 states and 345 transitions. Word has length 273 [2019-05-23 11:24:14,795 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:14,795 INFO L146 ILogger]: Abstraction has 329 states and 345 transitions. [2019-05-23 11:24:14,795 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:14,795 INFO L146 ILogger]: Start isEmpty. Operand 329 states and 345 transitions. [2019-05-23 11:24:14,796 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 281 [2019-05-23 11:24:14,796 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:14,797 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:14,797 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:14,797 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:14,797 INFO L146 ILogger]: Analyzing trace with hash 516455108, now seen corresponding path program 9 times [2019-05-23 11:24:14,798 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:14,798 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:14,798 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:14,799 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:14,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:14,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:15,181 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:15,181 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:15,181 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 11:24:15,190 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:15,328 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:24:15,329 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:15,330 INFO L146 ILogger]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:15,334 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:15,531 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2019-05-23 11:24:15,551 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:15,552 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2019-05-23 11:24:15,552 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:24:15,552 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:24:15,553 INFO L146 ILogger]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:24:15,553 INFO L146 ILogger]: Start difference. First operand 329 states and 345 transitions. Second operand 32 states. [2019-05-23 11:24:16,603 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:16,603 INFO L146 ILogger]: Finished difference Result 601 states and 634 transitions. [2019-05-23 11:24:16,604 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:24:16,604 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 280 [2019-05-23 11:24:16,604 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:16,606 INFO L146 ILogger]: With dead ends: 601 [2019-05-23 11:24:16,606 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:24:16,608 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=725, Invalid=2815, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:24:16,608 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:24:16,613 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 343. [2019-05-23 11:24:16,614 INFO L146 ILogger]: Start removeUnreachable. Operand 343 states. [2019-05-23 11:24:16,614 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 343 states to 343 states and 359 transitions. [2019-05-23 11:24:16,615 INFO L146 ILogger]: Start accepts. Automaton has 343 states and 359 transitions. Word has length 280 [2019-05-23 11:24:16,615 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:16,615 INFO L146 ILogger]: Abstraction has 343 states and 359 transitions. [2019-05-23 11:24:16,615 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:24:16,615 INFO L146 ILogger]: Start isEmpty. Operand 343 states and 359 transitions. [2019-05-23 11:24:16,617 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 295 [2019-05-23 11:24:16,617 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:16,617 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:16,617 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:16,618 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:16,618 INFO L146 ILogger]: Analyzing trace with hash 1645785853, now seen corresponding path program 10 times [2019-05-23 11:24:16,618 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:16,618 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:16,619 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,619 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:16,619 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:16,649 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,933 INFO L146 ILogger]: Checked inductivity of 663 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-05-23 11:24:17,933 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:17,933 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 11:24:17,943 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:18,122 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:18,123 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:18,125 INFO L146 ILogger]: Trace formula consists of 457 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:24:18,129 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:18,247 INFO L146 ILogger]: Checked inductivity of 663 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-05-23 11:24:18,266 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:18,266 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:24:18,266 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:24:18,267 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:24:18,267 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:24:18,267 INFO L146 ILogger]: Start difference. First operand 343 states and 359 transitions. Second operand 27 states. [2019-05-23 11:24:19,125 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:19,126 INFO L146 ILogger]: Finished difference Result 610 states and 642 transitions. [2019-05-23 11:24:19,129 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:24:19,129 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 294 [2019-05-23 11:24:19,129 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:19,131 INFO L146 ILogger]: With dead ends: 610 [2019-05-23 11:24:19,131 INFO L146 ILogger]: Without dead ends: 355 [2019-05-23 11:24:19,132 INFO L146 ILogger]: 0 DeclaredPredicates, 340 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:24:19,133 INFO L146 ILogger]: Start minimizeSevpa. Operand 355 states. [2019-05-23 11:24:19,138 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 355 to 350. [2019-05-23 11:24:19,138 INFO L146 ILogger]: Start removeUnreachable. Operand 350 states. [2019-05-23 11:24:19,139 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 350 states to 350 states and 366 transitions. [2019-05-23 11:24:19,139 INFO L146 ILogger]: Start accepts. Automaton has 350 states and 366 transitions. Word has length 294 [2019-05-23 11:24:19,139 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:19,139 INFO L146 ILogger]: Abstraction has 350 states and 366 transitions. [2019-05-23 11:24:19,139 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:24:19,140 INFO L146 ILogger]: Start isEmpty. Operand 350 states and 366 transitions. [2019-05-23 11:24:19,141 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 302 [2019-05-23 11:24:19,141 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:19,142 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:19,142 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:19,142 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:19,142 INFO L146 ILogger]: Analyzing trace with hash -193460153, now seen corresponding path program 11 times [2019-05-23 11:24:19,142 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:19,142 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:19,143 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,143 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:19,144 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:19,177 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:20,791 INFO L146 ILogger]: Checked inductivity of 741 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-05-23 11:24:20,791 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:20,791 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 11:24:20,800 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:21,155 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:24:21,155 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:21,157 INFO L146 ILogger]: Trace formula consists of 467 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:21,162 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:21,800 INFO L146 ILogger]: Checked inductivity of 741 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 677 trivial. 0 not checked. [2019-05-23 11:24:21,819 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:21,819 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 11] total 36 [2019-05-23 11:24:21,820 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:24:21,820 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:24:21,820 INFO L146 ILogger]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:24:21,821 INFO L146 ILogger]: Start difference. First operand 350 states and 366 transitions. Second operand 36 states. [2019-05-23 11:24:23,117 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:23,117 INFO L146 ILogger]: Finished difference Result 695 states and 736 transitions. [2019-05-23 11:24:23,117 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:24:23,118 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 301 [2019-05-23 11:24:23,118 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:23,121 INFO L146 ILogger]: With dead ends: 695 [2019-05-23 11:24:23,121 INFO L146 ILogger]: Without dead ends: 440 [2019-05-23 11:24:23,123 INFO L146 ILogger]: 0 DeclaredPredicates, 367 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=965, Invalid=3591, Unknown=0, NotChecked=0, Total=4556 [2019-05-23 11:24:23,124 INFO L146 ILogger]: Start minimizeSevpa. Operand 440 states. [2019-05-23 11:24:23,130 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 440 to 399. [2019-05-23 11:24:23,130 INFO L146 ILogger]: Start removeUnreachable. Operand 399 states. [2019-05-23 11:24:23,131 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 399 states to 399 states and 418 transitions. [2019-05-23 11:24:23,131 INFO L146 ILogger]: Start accepts. Automaton has 399 states and 418 transitions. Word has length 301 [2019-05-23 11:24:23,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:23,132 INFO L146 ILogger]: Abstraction has 399 states and 418 transitions. [2019-05-23 11:24:23,132 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:24:23,132 INFO L146 ILogger]: Start isEmpty. Operand 399 states and 418 transitions. [2019-05-23 11:24:23,134 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 339 [2019-05-23 11:24:23,134 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:23,134 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:23,134 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:23,135 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:23,135 INFO L146 ILogger]: Analyzing trace with hash 566181539, now seen corresponding path program 12 times [2019-05-23 11:24:23,135 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:23,135 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:23,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:23,136 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:23,136 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:23,165 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:25,874 INFO L146 ILogger]: Checked inductivity of 949 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2019-05-23 11:24:25,875 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:25,875 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 11:24:25,883 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:26,404 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:24:26,405 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,408 INFO L146 ILogger]: Trace formula consists of 492 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:26,412 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:26,714 INFO L146 ILogger]: Checked inductivity of 949 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2019-05-23 11:24:26,734 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:26,734 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 13] total 40 [2019-05-23 11:24:26,735 INFO L146 ILogger]: Interpolant automaton has 40 states [2019-05-23 11:24:26,735 INFO L146 ILogger]: Constructing interpolant automaton starting with 40 interpolants. [2019-05-23 11:24:26,736 INFO L146 ILogger]: CoverageRelationStatistics Valid=271, Invalid=1289, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:24:26,736 INFO L146 ILogger]: Start difference. First operand 399 states and 418 transitions. Second operand 40 states. [2019-05-23 11:24:27,907 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:27,907 INFO L146 ILogger]: Finished difference Result 786 states and 833 transitions. [2019-05-23 11:24:27,907 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-05-23 11:24:27,907 INFO L146 ILogger]: Start accepts. Automaton has 40 states. Word has length 338 [2019-05-23 11:24:27,907 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:27,909 INFO L146 ILogger]: With dead ends: 786 [2019-05-23 11:24:27,909 INFO L146 ILogger]: Without dead ends: 489 [2019-05-23 11:24:27,912 INFO L146 ILogger]: 0 DeclaredPredicates, 412 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1155, Invalid=4545, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:24:27,913 INFO L146 ILogger]: Start minimizeSevpa. Operand 489 states. [2019-05-23 11:24:27,919 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 489 to 448. [2019-05-23 11:24:27,919 INFO L146 ILogger]: Start removeUnreachable. Operand 448 states. [2019-05-23 11:24:27,920 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 448 states to 448 states and 470 transitions. [2019-05-23 11:24:27,920 INFO L146 ILogger]: Start accepts. Automaton has 448 states and 470 transitions. Word has length 338 [2019-05-23 11:24:27,921 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:27,921 INFO L146 ILogger]: Abstraction has 448 states and 470 transitions. [2019-05-23 11:24:27,921 INFO L146 ILogger]: Interpolant automaton has 40 states. [2019-05-23 11:24:27,921 INFO L146 ILogger]: Start isEmpty. Operand 448 states and 470 transitions. [2019-05-23 11:24:27,923 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 376 [2019-05-23 11:24:27,923 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:27,924 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:27,924 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:27,924 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:27,924 INFO L146 ILogger]: Analyzing trace with hash -1484133421, now seen corresponding path program 13 times [2019-05-23 11:24:27,925 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:27,925 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:27,925 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:27,926 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:27,926 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:27,961 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:29,411 INFO L146 ILogger]: Checked inductivity of 1194 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:29,412 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:29,412 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 11:24:29,421 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:29,506 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:29,508 INFO L146 ILogger]: Trace formula consists of 577 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:24:29,514 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:30,241 INFO L146 ILogger]: Checked inductivity of 1194 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:30,279 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:30,279 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:24:30,280 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:24:30,280 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:24:30,281 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:30,281 INFO L146 ILogger]: Start difference. First operand 448 states and 470 transitions. Second operand 33 states. [2019-05-23 11:24:31,087 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:31,087 INFO L146 ILogger]: Finished difference Result 799 states and 843 transitions. [2019-05-23 11:24:31,087 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:24:31,087 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 375 [2019-05-23 11:24:31,088 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:31,089 INFO L146 ILogger]: With dead ends: 799 [2019-05-23 11:24:31,089 INFO L146 ILogger]: Without dead ends: 460 [2019-05-23 11:24:31,091 INFO L146 ILogger]: 0 DeclaredPredicates, 433 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:24:31,091 INFO L146 ILogger]: Start minimizeSevpa. Operand 460 states. [2019-05-23 11:24:31,097 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 460 to 455. [2019-05-23 11:24:31,097 INFO L146 ILogger]: Start removeUnreachable. Operand 455 states. [2019-05-23 11:24:31,098 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 455 states to 455 states and 477 transitions. [2019-05-23 11:24:31,098 INFO L146 ILogger]: Start accepts. Automaton has 455 states and 477 transitions. Word has length 375 [2019-05-23 11:24:31,098 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:31,099 INFO L146 ILogger]: Abstraction has 455 states and 477 transitions. [2019-05-23 11:24:31,099 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:24:31,099 INFO L146 ILogger]: Start isEmpty. Operand 455 states and 477 transitions. [2019-05-23 11:24:31,101 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 383 [2019-05-23 11:24:31,101 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:31,102 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:31,102 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:31,102 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:31,102 INFO L146 ILogger]: Analyzing trace with hash 512746441, now seen corresponding path program 14 times [2019-05-23 11:24:31,102 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:31,103 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:31,103 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:31,103 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:31,104 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:31,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,821 INFO L146 ILogger]: Checked inductivity of 1293 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:31,821 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:31,821 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 11:24:31,832 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:31,936 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:31,936 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,938 INFO L146 ILogger]: Trace formula consists of 587 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:24:31,943 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:32,118 INFO L146 ILogger]: Checked inductivity of 1293 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:32,138 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:32,139 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:24:32,139 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:24:32,139 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:24:32,140 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:24:32,140 INFO L146 ILogger]: Start difference. First operand 455 states and 477 transitions. Second operand 35 states. [2019-05-23 11:24:32,793 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:32,793 INFO L146 ILogger]: Finished difference Result 806 states and 850 transitions. [2019-05-23 11:24:32,800 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:24:32,800 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 382 [2019-05-23 11:24:32,801 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:32,803 INFO L146 ILogger]: With dead ends: 806 [2019-05-23 11:24:32,803 INFO L146 ILogger]: Without dead ends: 467 [2019-05-23 11:24:32,806 INFO L146 ILogger]: 0 DeclaredPredicates, 444 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:24:32,807 INFO L146 ILogger]: Start minimizeSevpa. Operand 467 states. [2019-05-23 11:24:32,813 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 467 to 462. [2019-05-23 11:24:32,813 INFO L146 ILogger]: Start removeUnreachable. Operand 462 states. [2019-05-23 11:24:32,814 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 462 states to 462 states and 484 transitions. [2019-05-23 11:24:32,814 INFO L146 ILogger]: Start accepts. Automaton has 462 states and 484 transitions. Word has length 382 [2019-05-23 11:24:32,814 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:32,815 INFO L146 ILogger]: Abstraction has 462 states and 484 transitions. [2019-05-23 11:24:32,815 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:24:32,815 INFO L146 ILogger]: Start isEmpty. Operand 462 states and 484 transitions. [2019-05-23 11:24:32,817 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 390 [2019-05-23 11:24:32,818 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:32,818 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:32,818 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:32,819 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:32,819 INFO L146 ILogger]: Analyzing trace with hash -1130943725, now seen corresponding path program 15 times [2019-05-23 11:24:32,819 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:32,819 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:32,820 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,820 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:32,820 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,855 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:33,420 INFO L146 ILogger]: Checked inductivity of 1399 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-05-23 11:24:33,420 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:33,420 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 11:24:33,428 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:33,602 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:24:33,603 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:33,605 INFO L146 ILogger]: Trace formula consists of 442 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:33,609 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:33,889 INFO L146 ILogger]: Checked inductivity of 1399 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1324 trivial. 0 not checked. [2019-05-23 11:24:33,908 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:33,909 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:24:33,909 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:24:33,909 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:24:33,910 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:24:33,910 INFO L146 ILogger]: Start difference. First operand 462 states and 484 transitions. Second operand 46 states. [2019-05-23 11:24:35,054 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:35,054 INFO L146 ILogger]: Finished difference Result 825 states and 870 transitions. [2019-05-23 11:24:35,060 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:24:35,060 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 389 [2019-05-23 11:24:35,060 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:35,062 INFO L146 ILogger]: With dead ends: 825 [2019-05-23 11:24:35,062 INFO L146 ILogger]: Without dead ends: 486 [2019-05-23 11:24:35,065 INFO L146 ILogger]: 0 DeclaredPredicates, 465 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:24:35,065 INFO L146 ILogger]: Start minimizeSevpa. Operand 486 states. [2019-05-23 11:24:35,071 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 486 to 476. [2019-05-23 11:24:35,071 INFO L146 ILogger]: Start removeUnreachable. Operand 476 states. [2019-05-23 11:24:35,072 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 476 states to 476 states and 498 transitions. [2019-05-23 11:24:35,072 INFO L146 ILogger]: Start accepts. Automaton has 476 states and 498 transitions. Word has length 389 [2019-05-23 11:24:35,073 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:35,073 INFO L146 ILogger]: Abstraction has 476 states and 498 transitions. [2019-05-23 11:24:35,073 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:24:35,073 INFO L146 ILogger]: Start isEmpty. Operand 476 states and 498 transitions. [2019-05-23 11:24:35,075 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 404 [2019-05-23 11:24:35,076 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:35,076 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:35,076 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:35,076 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:35,077 INFO L146 ILogger]: Analyzing trace with hash 1135245882, now seen corresponding path program 16 times [2019-05-23 11:24:35,077 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:35,077 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:35,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:35,078 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:35,078 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:35,111 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:36,364 INFO L146 ILogger]: Checked inductivity of 1548 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:36,365 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:36,365 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 11:24:36,373 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:36,717 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:36,718 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:36,720 INFO L146 ILogger]: Trace formula consists of 617 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:24:36,725 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:37,117 INFO L146 ILogger]: Checked inductivity of 1548 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:37,137 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:37,138 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:24:37,138 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:24:37,139 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:24:37,139 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:24:37,139 INFO L146 ILogger]: Start difference. First operand 476 states and 498 transitions. Second operand 39 states. [2019-05-23 11:24:37,939 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:37,939 INFO L146 ILogger]: Finished difference Result 834 states and 878 transitions. [2019-05-23 11:24:37,940 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:24:37,940 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 403 [2019-05-23 11:24:37,940 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:37,942 INFO L146 ILogger]: With dead ends: 834 [2019-05-23 11:24:37,942 INFO L146 ILogger]: Without dead ends: 488 [2019-05-23 11:24:37,944 INFO L146 ILogger]: 0 DeclaredPredicates, 473 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:24:37,945 INFO L146 ILogger]: Start minimizeSevpa. Operand 488 states. [2019-05-23 11:24:37,950 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 488 to 483. [2019-05-23 11:24:37,950 INFO L146 ILogger]: Start removeUnreachable. Operand 483 states. [2019-05-23 11:24:37,951 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 483 states to 483 states and 505 transitions. [2019-05-23 11:24:37,951 INFO L146 ILogger]: Start accepts. Automaton has 483 states and 505 transitions. Word has length 403 [2019-05-23 11:24:37,952 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:37,952 INFO L146 ILogger]: Abstraction has 483 states and 505 transitions. [2019-05-23 11:24:37,952 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:24:37,952 INFO L146 ILogger]: Start isEmpty. Operand 483 states and 505 transitions. [2019-05-23 11:24:37,954 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 411 [2019-05-23 11:24:37,954 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:37,955 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:37,955 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:37,955 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:37,955 INFO L146 ILogger]: Analyzing trace with hash 2037220656, now seen corresponding path program 17 times [2019-05-23 11:24:37,956 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:37,956 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:37,956 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:37,956 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:37,957 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:37,999 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,635 INFO L146 ILogger]: Checked inductivity of 1668 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:38,635 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:38,635 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 11:24:38,645 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:39,893 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:24:39,893 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:39,897 INFO L146 ILogger]: Trace formula consists of 627 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:24:39,900 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:40,085 INFO L146 ILogger]: Checked inductivity of 1668 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:40,104 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:40,105 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:24:40,105 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:24:40,106 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:24:40,106 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:40,106 INFO L146 ILogger]: Start difference. First operand 483 states and 505 transitions. Second operand 41 states. [2019-05-23 11:24:41,055 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:41,055 INFO L146 ILogger]: Finished difference Result 841 states and 885 transitions. [2019-05-23 11:24:41,055 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:24:41,055 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 410 [2019-05-23 11:24:41,056 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:41,058 INFO L146 ILogger]: With dead ends: 841 [2019-05-23 11:24:41,058 INFO L146 ILogger]: Without dead ends: 495 [2019-05-23 11:24:41,061 INFO L146 ILogger]: 0 DeclaredPredicates, 484 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:24:41,062 INFO L146 ILogger]: Start minimizeSevpa. Operand 495 states. [2019-05-23 11:24:41,068 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 495 to 490. [2019-05-23 11:24:41,068 INFO L146 ILogger]: Start removeUnreachable. Operand 490 states. [2019-05-23 11:24:41,069 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 490 states to 490 states and 512 transitions. [2019-05-23 11:24:41,069 INFO L146 ILogger]: Start accepts. Automaton has 490 states and 512 transitions. Word has length 410 [2019-05-23 11:24:41,069 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:41,070 INFO L146 ILogger]: Abstraction has 490 states and 512 transitions. [2019-05-23 11:24:41,070 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:24:41,070 INFO L146 ILogger]: Start isEmpty. Operand 490 states and 512 transitions. [2019-05-23 11:24:41,072 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 418 [2019-05-23 11:24:41,072 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:41,073 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:41,073 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:41,073 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:41,073 INFO L146 ILogger]: Analyzing trace with hash 1886148986, now seen corresponding path program 18 times [2019-05-23 11:24:41,073 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:41,073 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:41,074 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,074 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:41,074 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:41,116 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,128 INFO L146 ILogger]: Checked inductivity of 1795 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2019-05-23 11:24:42,128 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:42,129 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 11:24:42,137 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:42,911 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:24:42,912 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,914 INFO L146 ILogger]: Trace formula consists of 567 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:24:42,917 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:43,350 INFO L146 ILogger]: Checked inductivity of 1795 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 1639 trivial. 0 not checked. [2019-05-23 11:24:43,372 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:43,372 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 15] total 54 [2019-05-23 11:24:43,373 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:24:43,373 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:24:43,374 INFO L146 ILogger]: CoverageRelationStatistics Valid=502, Invalid=2360, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:24:43,374 INFO L146 ILogger]: Start difference. First operand 490 states and 512 transitions. Second operand 54 states. [2019-05-23 11:24:45,835 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:45,835 INFO L146 ILogger]: Finished difference Result 921 states and 974 transitions. [2019-05-23 11:24:45,835 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-05-23 11:24:45,835 INFO L146 ILogger]: Start accepts. Automaton has 54 states. Word has length 417 [2019-05-23 11:24:45,836 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:45,838 INFO L146 ILogger]: With dead ends: 921 [2019-05-23 11:24:45,839 INFO L146 ILogger]: Without dead ends: 575 [2019-05-23 11:24:45,840 INFO L146 ILogger]: 0 DeclaredPredicates, 507 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2240, Invalid=8472, Unknown=0, NotChecked=0, Total=10712 [2019-05-23 11:24:45,841 INFO L146 ILogger]: Start minimizeSevpa. Operand 575 states. [2019-05-23 11:24:45,849 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 575 to 539. [2019-05-23 11:24:45,849 INFO L146 ILogger]: Start removeUnreachable. Operand 539 states. [2019-05-23 11:24:45,850 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 539 states to 539 states and 564 transitions. [2019-05-23 11:24:45,851 INFO L146 ILogger]: Start accepts. Automaton has 539 states and 564 transitions. Word has length 417 [2019-05-23 11:24:45,851 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:45,851 INFO L146 ILogger]: Abstraction has 539 states and 564 transitions. [2019-05-23 11:24:45,851 INFO L146 ILogger]: Interpolant automaton has 54 states. [2019-05-23 11:24:45,851 INFO L146 ILogger]: Start isEmpty. Operand 539 states and 564 transitions. [2019-05-23 11:24:45,854 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 455 [2019-05-23 11:24:45,854 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:45,855 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:45,855 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:45,855 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:45,856 INFO L146 ILogger]: Analyzing trace with hash 326628758, now seen corresponding path program 19 times [2019-05-23 11:24:45,856 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:45,856 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:45,857 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:45,858 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:45,858 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:45,919 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:46,951 INFO L146 ILogger]: Checked inductivity of 2112 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 1895 trivial. 0 not checked. [2019-05-23 11:24:46,951 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:46,951 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 11:24:46,959 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:47,062 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:47,064 INFO L146 ILogger]: Trace formula consists of 692 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:47,069 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:47,526 INFO L146 ILogger]: Checked inductivity of 2112 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 1895 trivial. 0 not checked. [2019-05-23 11:24:47,545 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:47,545 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:24:47,546 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:24:47,546 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:24:47,546 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:24:47,547 INFO L146 ILogger]: Start difference. First operand 539 states and 564 transitions. Second operand 19 states. [2019-05-23 11:24:47,977 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:47,978 INFO L146 ILogger]: Finished difference Result 900 states and 950 transitions. [2019-05-23 11:24:47,979 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:24:47,979 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 454 [2019-05-23 11:24:47,981 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:47,983 INFO L146 ILogger]: With dead ends: 900 [2019-05-23 11:24:47,983 INFO L146 ILogger]: Without dead ends: 617 [2019-05-23 11:24:47,984 INFO L146 ILogger]: 0 DeclaredPredicates, 484 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:47,985 INFO L146 ILogger]: Start minimizeSevpa. Operand 617 states. [2019-05-23 11:24:47,991 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 617 to 581. [2019-05-23 11:24:47,991 INFO L146 ILogger]: Start removeUnreachable. Operand 581 states. [2019-05-23 11:24:47,992 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 581 states to 581 states and 609 transitions. [2019-05-23 11:24:47,992 INFO L146 ILogger]: Start accepts. Automaton has 581 states and 609 transitions. Word has length 454 [2019-05-23 11:24:47,993 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:47,993 INFO L146 ILogger]: Abstraction has 581 states and 609 transitions. [2019-05-23 11:24:47,993 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:24:47,993 INFO L146 ILogger]: Start isEmpty. Operand 581 states and 609 transitions. [2019-05-23 11:24:47,996 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 485 [2019-05-23 11:24:47,996 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:47,996 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:47,997 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:47,997 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:47,997 INFO L146 ILogger]: Analyzing trace with hash -492518212, now seen corresponding path program 20 times [2019-05-23 11:24:47,997 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:47,997 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:47,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:47,998 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:47,998 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:48,043 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:48,397 INFO L146 ILogger]: Checked inductivity of 2325 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 2037 trivial. 0 not checked. [2019-05-23 11:24:48,397 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:48,397 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:24:48,405 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:48,517 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:48,517 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:48,519 INFO L146 ILogger]: Trace formula consists of 737 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:48,522 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:48,725 INFO L146 ILogger]: Checked inductivity of 2325 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 2037 trivial. 0 not checked. [2019-05-23 11:24:48,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:48,745 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:48,746 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:48,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:48,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:48,747 INFO L146 ILogger]: Start difference. First operand 581 states and 609 transitions. Second operand 21 states. [2019-05-23 11:24:49,208 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:49,209 INFO L146 ILogger]: Finished difference Result 970 states and 1025 transitions. [2019-05-23 11:24:49,209 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:49,209 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 484 [2019-05-23 11:24:49,210 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:49,213 INFO L146 ILogger]: With dead ends: 970 [2019-05-23 11:24:49,213 INFO L146 ILogger]: Without dead ends: 659 [2019-05-23 11:24:49,214 INFO L146 ILogger]: 0 DeclaredPredicates, 518 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:49,215 INFO L146 ILogger]: Start minimizeSevpa. Operand 659 states. [2019-05-23 11:24:49,221 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 659 to 623. [2019-05-23 11:24:49,222 INFO L146 ILogger]: Start removeUnreachable. Operand 623 states. [2019-05-23 11:24:49,223 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 623 states to 623 states and 654 transitions. [2019-05-23 11:24:49,223 INFO L146 ILogger]: Start accepts. Automaton has 623 states and 654 transitions. Word has length 484 [2019-05-23 11:24:49,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:49,223 INFO L146 ILogger]: Abstraction has 623 states and 654 transitions. [2019-05-23 11:24:49,224 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:49,224 INFO L146 ILogger]: Start isEmpty. Operand 623 states and 654 transitions. [2019-05-23 11:24:49,227 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 515 [2019-05-23 11:24:49,227 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:49,227 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:49,228 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:49,228 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:49,228 INFO L146 ILogger]: Analyzing trace with hash 1094404962, now seen corresponding path program 21 times [2019-05-23 11:24:49,228 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:49,228 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:49,229 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,229 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:49,229 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:49,278 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:49,760 INFO L146 ILogger]: Checked inductivity of 2568 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 2199 trivial. 0 not checked. [2019-05-23 11:24:49,760 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:49,760 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 11:24:49,770 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:50,000 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:24:50,000 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:50,002 INFO L146 ILogger]: Trace formula consists of 507 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:24:50,007 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:50,358 INFO L146 ILogger]: Checked inductivity of 2568 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2457 trivial. 0 not checked. [2019-05-23 11:24:50,377 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:50,377 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2019-05-23 11:24:50,377 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:24:50,378 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:24:50,378 INFO L146 ILogger]: CoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:24:50,378 INFO L146 ILogger]: Start difference. First operand 623 states and 654 transitions. Second operand 34 states. [2019-05-23 11:24:51,425 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:51,426 INFO L146 ILogger]: Finished difference Result 1052 states and 1113 transitions. [2019-05-23 11:24:51,426 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:24:51,426 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 514 [2019-05-23 11:24:51,427 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:51,430 INFO L146 ILogger]: With dead ends: 1052 [2019-05-23 11:24:51,430 INFO L146 ILogger]: Without dead ends: 713 [2019-05-23 11:24:51,431 INFO L146 ILogger]: 0 DeclaredPredicates, 582 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=740, Invalid=3292, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:24:51,432 INFO L146 ILogger]: Start minimizeSevpa. Operand 713 states. [2019-05-23 11:24:51,439 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 713 to 672. [2019-05-23 11:24:51,439 INFO L146 ILogger]: Start removeUnreachable. Operand 672 states. [2019-05-23 11:24:51,440 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 672 states to 672 states and 706 transitions. [2019-05-23 11:24:51,440 INFO L146 ILogger]: Start accepts. Automaton has 672 states and 706 transitions. Word has length 514 [2019-05-23 11:24:51,440 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:51,441 INFO L146 ILogger]: Abstraction has 672 states and 706 transitions. [2019-05-23 11:24:51,441 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:24:51,441 INFO L146 ILogger]: Start isEmpty. Operand 672 states and 706 transitions. [2019-05-23 11:24:51,444 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 552 [2019-05-23 11:24:51,445 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:51,445 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:51,445 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:51,445 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:51,446 INFO L146 ILogger]: Analyzing trace with hash 418554251, now seen corresponding path program 22 times [2019-05-23 11:24:51,446 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:51,446 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:51,447 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:51,447 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:51,447 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:51,494 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:52,188 INFO L146 ILogger]: Checked inductivity of 2884 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 2424 trivial. 0 not checked. [2019-05-23 11:24:52,188 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:52,189 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 11:24:52,197 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:52,803 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:52,803 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:52,807 INFO L146 ILogger]: Trace formula consists of 837 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:24:52,812 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:52,973 INFO L146 ILogger]: Checked inductivity of 2884 backedges. 0 proven. 460 refuted. 0 times theorem prover too weak. 2424 trivial. 0 not checked. [2019-05-23 11:24:52,994 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:52,994 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2019-05-23 11:24:52,995 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:24:52,995 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:24:52,995 INFO L146 ILogger]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:52,995 INFO L146 ILogger]: Start difference. First operand 672 states and 706 transitions. Second operand 25 states. [2019-05-23 11:24:53,596 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:53,596 INFO L146 ILogger]: Finished difference Result 1124 states and 1189 transitions. [2019-05-23 11:24:53,597 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:24:53,597 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 551 [2019-05-23 11:24:53,598 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:53,600 INFO L146 ILogger]: With dead ends: 1124 [2019-05-23 11:24:53,600 INFO L146 ILogger]: Without dead ends: 750 [2019-05-23 11:24:53,601 INFO L146 ILogger]: 0 DeclaredPredicates, 593 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:24:53,602 INFO L146 ILogger]: Start minimizeSevpa. Operand 750 states. [2019-05-23 11:24:53,608 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 750 to 714. [2019-05-23 11:24:53,609 INFO L146 ILogger]: Start removeUnreachable. Operand 714 states. [2019-05-23 11:24:53,610 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 714 states to 714 states and 751 transitions. [2019-05-23 11:24:53,610 INFO L146 ILogger]: Start accepts. Automaton has 714 states and 751 transitions. Word has length 551 [2019-05-23 11:24:53,610 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:53,610 INFO L146 ILogger]: Abstraction has 714 states and 751 transitions. [2019-05-23 11:24:53,611 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:24:53,611 INFO L146 ILogger]: Start isEmpty. Operand 714 states and 751 transitions. [2019-05-23 11:24:53,614 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 582 [2019-05-23 11:24:53,615 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:53,615 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:53,615 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:53,616 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:53,616 INFO L146 ILogger]: Analyzing trace with hash 1886877681, now seen corresponding path program 23 times [2019-05-23 11:24:53,616 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:53,616 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:53,617 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,617 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:53,617 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:53,667 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:54,193 INFO L146 ILogger]: Checked inductivity of 3187 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 2626 trivial. 0 not checked. [2019-05-23 11:24:54,193 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:54,193 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:24:54,214 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:59,008 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2019-05-23 11:24:59,008 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:59,016 INFO L146 ILogger]: Trace formula consists of 882 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:59,021 INFO L146 ILogger]: Computing forward predicates...