java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum_m3_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:12,947 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:12,949 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:12,961 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:12,961 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:12,963 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:12,964 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:12,966 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:12,968 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:12,968 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:12,969 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:12,970 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:12,971 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:12,972 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:12,973 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:12,974 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:12,975 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:12,976 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:12,978 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:12,980 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:12,981 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:12,982 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:12,984 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:12,984 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:12,985 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:12,986 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:12,986 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:12,987 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:12,987 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:12,988 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:12,989 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:12,989 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:12,990 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:12,991 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:12,991 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:12,992 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:12,992 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:12,993 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:12,993 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:12,994 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:13,008 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:13,008 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:13,010 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:13,010 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:13,010 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:13,010 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:13,011 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:13,011 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:13,011 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:13,011 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:13,011 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:13,012 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:13,012 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:13,012 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:13,012 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:13,012 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:13,013 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:13,013 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:13,013 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:13,013 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:13,014 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:13,014 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:13,014 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:13,014 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:13,014 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:13,015 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:13,015 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:13,015 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:13,015 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 11:30:13,046 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:13,058 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:13,062 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:13,063 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:13,064 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:13,065 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_m3_true-unreach-call.c [2019-05-23 11:30:13,120 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07a06d63/4d01edc205e841e9a4f48348d05f231f/FLAG5c13ee91d [2019-05-23 11:30:13,522 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:13,523 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_m3_true-unreach-call.c [2019-05-23 11:30:13,529 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07a06d63/4d01edc205e841e9a4f48348d05f231f/FLAG5c13ee91d [2019-05-23 11:30:13,908 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d07a06d63/4d01edc205e841e9a4f48348d05f231f [2019-05-23 11:30:13,919 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:13,920 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:13,921 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:13,921 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:13,925 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:13,926 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,930 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2896109b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:13, skipping insertion in model container [2019-05-23 11:30:13,930 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:13" (1/1) ... [2019-05-23 11:30:13,937 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:13,960 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:14,186 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:14,193 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:14,222 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:14,244 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:14,244 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14 WrapperNode [2019-05-23 11:30:14,245 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:14,246 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:14,246 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:14,246 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:14,253 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,264 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,290 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:14,290 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:14,290 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:14,291 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:14,298 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,298 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,300 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,300 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,307 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,399 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,403 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (1/1) ... [2019-05-23 11:30:14,405 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:14,406 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:14,406 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:14,406 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:14,407 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (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 11:30:14,466 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:14,466 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:14,466 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:14,467 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:14,467 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:14,988 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:14,989 INFO L146 ILogger]: Removed 12 assume(true) statements. [2019-05-23 11:30:14,990 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:14 BoogieIcfgContainer [2019-05-23 11:30:14,990 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:14,991 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:14,991 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:14,994 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:14,995 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:13" (1/3) ... [2019-05-23 11:30:14,996 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46ede1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:14, skipping insertion in model container [2019-05-23 11:30:14,996 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:14" (2/3) ... [2019-05-23 11:30:14,996 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f46ede1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:14, skipping insertion in model container [2019-05-23 11:30:14,996 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:14" (3/3) ... [2019-05-23 11:30:14,998 INFO L146 ILogger]: Analyzing ICFG zero_sum_m3_true-unreach-call.c [2019-05-23 11:30:15,008 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:15,016 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:15,032 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:15,060 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:15,061 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:15,061 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:15,062 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:15,062 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:15,062 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:15,062 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:15,062 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:15,063 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:15,078 INFO L146 ILogger]: Start isEmpty. Operand 72 states. [2019-05-23 11:30:15,085 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:30:15,085 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,086 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:15,088 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,092 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,092 INFO L146 ILogger]: Analyzing trace with hash 2025856780, now seen corresponding path program 1 times [2019-05-23 11:30:15,094 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,094 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,135 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:15,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,173 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,209 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 11:30:15,212 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:15,212 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:30:15,216 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:30:15,225 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:30:15,226 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:30:15,228 INFO L146 ILogger]: Start difference. First operand 72 states. Second operand 2 states. [2019-05-23 11:30:15,247 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:15,247 INFO L146 ILogger]: Finished difference Result 124 states and 147 transitions. [2019-05-23 11:30:15,247 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:30:15,248 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 29 [2019-05-23 11:30:15,249 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:15,257 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:30:15,258 INFO L146 ILogger]: Without dead ends: 66 [2019-05-23 11:30:15,261 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:30:15,275 INFO L146 ILogger]: Start minimizeSevpa. Operand 66 states. [2019-05-23 11:30:15,291 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 66 to 66. [2019-05-23 11:30:15,292 INFO L146 ILogger]: Start removeUnreachable. Operand 66 states. [2019-05-23 11:30:15,294 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2019-05-23 11:30:15,296 INFO L146 ILogger]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 29 [2019-05-23 11:30:15,296 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:15,296 INFO L146 ILogger]: Abstraction has 66 states and 71 transitions. [2019-05-23 11:30:15,297 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:30:15,297 INFO L146 ILogger]: Start isEmpty. Operand 66 states and 71 transitions. [2019-05-23 11:30:15,298 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 30 [2019-05-23 11:30:15,298 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,298 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:15,299 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,299 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,299 INFO L146 ILogger]: Analyzing trace with hash 1059714360, now seen corresponding path program 1 times [2019-05-23 11:30:15,299 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,299 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,301 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:15,301 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,322 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,423 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 11:30:15,423 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:15,423 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:30:15,425 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:15,425 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:15,426 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:15,426 INFO L146 ILogger]: Start difference. First operand 66 states and 71 transitions. Second operand 5 states. [2019-05-23 11:30:15,766 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:15,766 INFO L146 ILogger]: Finished difference Result 95 states and 105 transitions. [2019-05-23 11:30:15,767 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:15,767 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 29 [2019-05-23 11:30:15,768 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:15,769 INFO L146 ILogger]: With dead ends: 95 [2019-05-23 11:30:15,769 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:30:15,771 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:15,771 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:30:15,780 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 77. [2019-05-23 11:30:15,780 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:30:15,781 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2019-05-23 11:30:15,782 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 29 [2019-05-23 11:30:15,782 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:15,782 INFO L146 ILogger]: Abstraction has 77 states and 87 transitions. [2019-05-23 11:30:15,782 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:15,783 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 87 transitions. [2019-05-23 11:30:15,784 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:30:15,784 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,784 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] [2019-05-23 11:30:15,785 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,785 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,785 INFO L146 ILogger]: Analyzing trace with hash 274914480, now seen corresponding path program 1 times [2019-05-23 11:30:15,786 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,786 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,787 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,787 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:15,787 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,804 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,934 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 11:30:15,934 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:15,935 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 11:30:15,952 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:15,985 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,987 INFO L146 ILogger]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:15,994 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:16,247 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 11:30:16,268 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:16,268 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:30:16,268 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:30:16,269 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:30:16,269 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:30:16,269 INFO L146 ILogger]: Start difference. First operand 77 states and 87 transitions. Second operand 7 states. [2019-05-23 11:30:16,765 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:16,766 INFO L146 ILogger]: Finished difference Result 159 states and 179 transitions. [2019-05-23 11:30:16,768 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:30:16,769 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 36 [2019-05-23 11:30:16,769 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:16,772 INFO L146 ILogger]: With dead ends: 159 [2019-05-23 11:30:16,772 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:30:16,775 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:30:16,775 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:30:16,790 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 79. [2019-05-23 11:30:16,790 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:30:16,794 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2019-05-23 11:30:16,795 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 36 [2019-05-23 11:30:16,796 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:16,796 INFO L146 ILogger]: Abstraction has 79 states and 84 transitions. [2019-05-23 11:30:16,797 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:30:16,797 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 84 transitions. [2019-05-23 11:30:16,801 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 79 [2019-05-23 11:30:16,801 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:16,804 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] [2019-05-23 11:30:16,805 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:16,805 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:16,805 INFO L146 ILogger]: Analyzing trace with hash 1321937047, now seen corresponding path program 1 times [2019-05-23 11:30:16,806 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:16,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:16,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,807 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:16,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:17,135 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:30:17,136 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:17,136 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 11:30:17,149 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:17,183 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:17,186 INFO L146 ILogger]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:17,191 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:17,298 INFO L146 ILogger]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-05-23 11:30:17,327 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:17,327 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:17,328 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:17,328 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:17,329 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:17,329 INFO L146 ILogger]: Start difference. First operand 79 states and 84 transitions. Second operand 9 states. [2019-05-23 11:30:18,038 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:18,038 INFO L146 ILogger]: Finished difference Result 169 states and 179 transitions. [2019-05-23 11:30:18,039 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:18,039 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 78 [2019-05-23 11:30:18,039 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:18,041 INFO L146 ILogger]: With dead ends: 169 [2019-05-23 11:30:18,042 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:30:18,043 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:18,044 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:30:18,058 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 86. [2019-05-23 11:30:18,058 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:30:18,059 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2019-05-23 11:30:18,059 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 78 [2019-05-23 11:30:18,061 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:18,061 INFO L146 ILogger]: Abstraction has 86 states and 91 transitions. [2019-05-23 11:30:18,061 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:18,061 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 91 transitions. [2019-05-23 11:30:18,062 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:30:18,063 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:18,063 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:18,063 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:18,063 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:18,064 INFO L146 ILogger]: Analyzing trace with hash -1268067990, now seen corresponding path program 2 times [2019-05-23 11:30:18,064 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:18,064 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:18,065 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,065 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:18,065 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,085 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,216 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:30:18,216 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:18,216 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 11:30:18,225 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:18,288 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:18,288 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,289 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:18,293 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:18,440 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:30:18,463 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:18,463 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:18,464 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:18,464 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:18,465 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:18,465 INFO L146 ILogger]: Start difference. First operand 86 states and 91 transitions. Second operand 9 states. [2019-05-23 11:30:18,741 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:18,741 INFO L146 ILogger]: Finished difference Result 162 states and 171 transitions. [2019-05-23 11:30:18,741 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:18,742 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 85 [2019-05-23 11:30:18,742 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:18,744 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:30:18,744 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:30:18,746 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:18,747 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:30:18,764 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 93. [2019-05-23 11:30:18,765 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:30:18,765 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2019-05-23 11:30:18,766 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 85 [2019-05-23 11:30:18,766 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:18,766 INFO L146 ILogger]: Abstraction has 93 states and 98 transitions. [2019-05-23 11:30:18,766 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:18,767 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 98 transitions. [2019-05-23 11:30:18,768 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 93 [2019-05-23 11:30:18,768 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:18,768 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:18,769 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:18,769 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:18,769 INFO L146 ILogger]: Analyzing trace with hash 2135284720, now seen corresponding path program 3 times [2019-05-23 11:30:18,769 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:18,769 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:18,770 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,770 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:18,771 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:18,787 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,907 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-05-23 11:30:18,908 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:18,908 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 11:30:18,917 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:18,962 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:30:18,963 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:18,964 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:18,968 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:19,047 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-05-23 11:30:19,066 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:19,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:19,067 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:19,067 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:19,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:19,068 INFO L146 ILogger]: Start difference. First operand 93 states and 98 transitions. Second operand 9 states. [2019-05-23 11:30:19,361 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:19,361 INFO L146 ILogger]: Finished difference Result 162 states and 171 transitions. [2019-05-23 11:30:19,362 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:30:19,362 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 92 [2019-05-23 11:30:19,362 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:19,364 INFO L146 ILogger]: With dead ends: 162 [2019-05-23 11:30:19,364 INFO L146 ILogger]: Without dead ends: 122 [2019-05-23 11:30:19,365 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:30:19,366 INFO L146 ILogger]: Start minimizeSevpa. Operand 122 states. [2019-05-23 11:30:19,372 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 122 to 107. [2019-05-23 11:30:19,373 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:30:19,373 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2019-05-23 11:30:19,374 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 92 [2019-05-23 11:30:19,374 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:19,374 INFO L146 ILogger]: Abstraction has 107 states and 112 transitions. [2019-05-23 11:30:19,374 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:19,374 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 112 transitions. [2019-05-23 11:30:19,376 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:30:19,376 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:19,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:19,377 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:19,377 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:19,377 INFO L146 ILogger]: Analyzing trace with hash 842253506, now seen corresponding path program 4 times [2019-05-23 11:30:19,377 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:19,377 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:19,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:19,378 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:19,378 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:19,396 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,570 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 11:30:19,570 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:19,570 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 11:30:19,582 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:19,610 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:19,610 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:19,610 INFO L146 ILogger]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:19,615 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:19,728 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 11:30:19,748 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:19,748 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:30:19,748 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:30:19,749 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:30:19,749 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:30:19,749 INFO L146 ILogger]: Start difference. First operand 107 states and 112 transitions. Second operand 9 states. [2019-05-23 11:30:19,971 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:19,972 INFO L146 ILogger]: Finished difference Result 125 states and 130 transitions. [2019-05-23 11:30:19,972 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:30:19,972 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 106 [2019-05-23 11:30:19,973 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:19,974 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:30:19,974 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:30:19,975 INFO L146 ILogger]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:30:19,976 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:30:19,981 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 114. [2019-05-23 11:30:19,981 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:30:19,982 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2019-05-23 11:30:19,982 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 106 [2019-05-23 11:30:19,982 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:19,983 INFO L146 ILogger]: Abstraction has 114 states and 119 transitions. [2019-05-23 11:30:19,983 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:30:19,983 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 119 transitions. [2019-05-23 11:30:19,984 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 114 [2019-05-23 11:30:19,985 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:19,985 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, 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] [2019-05-23 11:30:19,985 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:19,985 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:19,986 INFO L146 ILogger]: Analyzing trace with hash 904466840, now seen corresponding path program 5 times [2019-05-23 11:30:19,986 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:19,986 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:19,987 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:19,987 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:19,987 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:20,051 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:20,895 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2019-05-23 11:30:21,554 WARN L146 ILogger]: Spent 173.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 22 [2019-05-23 11:30:22,638 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2019-05-23 11:30:23,421 WARN L146 ILogger]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2019-05-23 11:30:26,111 INFO L146 ILogger]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:26,112 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:26,112 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 11:30:26,122 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:26,153 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:30:26,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:26,155 WARN L146 ILogger]: Trace formula consists of 186 conjuncts, 94 conjunts are in the unsatisfiable core [2019-05-23 11:30:26,160 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:28,984 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:30:28,985 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:28,993 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:28,993 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:28,993 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:29,161 INFO L146 ILogger]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:29,179 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:29,179 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 44] total 85 [2019-05-23 11:30:29,180 INFO L146 ILogger]: Interpolant automaton has 85 states [2019-05-23 11:30:29,180 INFO L146 ILogger]: Constructing interpolant automaton starting with 85 interpolants. [2019-05-23 11:30:29,184 INFO L146 ILogger]: CoverageRelationStatistics Valid=332, Invalid=6808, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:30:29,184 INFO L146 ILogger]: Start difference. First operand 114 states and 119 transitions. Second operand 85 states. [2019-05-23 11:30:39,664 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:39,665 INFO L146 ILogger]: Finished difference Result 219 states and 229 transitions. [2019-05-23 11:30:39,665 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2019-05-23 11:30:39,665 INFO L146 ILogger]: Start accepts. Automaton has 85 states. Word has length 113 [2019-05-23 11:30:39,666 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:39,667 INFO L146 ILogger]: With dead ends: 219 [2019-05-23 11:30:39,667 INFO L146 ILogger]: Without dead ends: 213 [2019-05-23 11:30:39,672 INFO L146 ILogger]: 0 DeclaredPredicates, 218 GetRequests, 79 SyntacticMatches, 9 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4620 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=728, Invalid=16564, Unknown=0, NotChecked=0, Total=17292 [2019-05-23 11:30:39,673 INFO L146 ILogger]: Start minimizeSevpa. Operand 213 states. [2019-05-23 11:30:39,681 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 213 to 193. [2019-05-23 11:30:39,681 INFO L146 ILogger]: Start removeUnreachable. Operand 193 states. [2019-05-23 11:30:39,682 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 193 states to 193 states and 203 transitions. [2019-05-23 11:30:39,682 INFO L146 ILogger]: Start accepts. Automaton has 193 states and 203 transitions. Word has length 113 [2019-05-23 11:30:39,683 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:39,683 INFO L146 ILogger]: Abstraction has 193 states and 203 transitions. [2019-05-23 11:30:39,683 INFO L146 ILogger]: Interpolant automaton has 85 states. [2019-05-23 11:30:39,683 INFO L146 ILogger]: Start isEmpty. Operand 193 states and 203 transitions. [2019-05-23 11:30:39,685 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:30:39,685 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:39,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:39,686 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:39,686 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:39,686 INFO L146 ILogger]: Analyzing trace with hash 1019419536, now seen corresponding path program 6 times [2019-05-23 11:30:39,687 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:39,687 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:39,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,688 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:39,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,701 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,504 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:40,504 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:40,504 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 11:30:40,513 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:40,577 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:40,577 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,579 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:40,585 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:40,769 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:40,787 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:40,788 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:40,790 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:40,792 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:40,792 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:40,792 INFO L146 ILogger]: Start difference. First operand 193 states and 203 transitions. Second operand 20 states. [2019-05-23 11:30:41,507 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:41,508 INFO L146 ILogger]: Finished difference Result 326 states and 342 transitions. [2019-05-23 11:30:41,510 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:41,510 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:30:41,511 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:41,512 INFO L146 ILogger]: With dead ends: 326 [2019-05-23 11:30:41,512 INFO L146 ILogger]: Without dead ends: 281 [2019-05-23 11:30:41,513 INFO L146 ILogger]: 0 DeclaredPredicates, 144 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:41,514 INFO L146 ILogger]: Start minimizeSevpa. Operand 281 states. [2019-05-23 11:30:41,527 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 281 to 232. [2019-05-23 11:30:41,527 INFO L146 ILogger]: Start removeUnreachable. Operand 232 states. [2019-05-23 11:30:41,528 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 232 states to 232 states and 243 transitions. [2019-05-23 11:30:41,528 INFO L146 ILogger]: Start accepts. Automaton has 232 states and 243 transitions. Word has length 120 [2019-05-23 11:30:41,529 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:41,529 INFO L146 ILogger]: Abstraction has 232 states and 243 transitions. [2019-05-23 11:30:41,529 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:41,529 INFO L146 ILogger]: Start isEmpty. Operand 232 states and 243 transitions. [2019-05-23 11:30:41,531 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:30:41,531 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:41,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:41,532 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:41,532 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:41,532 INFO L146 ILogger]: Analyzing trace with hash 1008846850, now seen corresponding path program 7 times [2019-05-23 11:30:41,533 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:41,533 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:41,533 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,534 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:41,534 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,545 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,681 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:41,682 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:41,682 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:41,693 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:41,729 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,731 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:41,733 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:41,967 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:41,987 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:41,987 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:41,987 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:41,988 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:41,988 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:41,988 INFO L146 ILogger]: Start difference. First operand 232 states and 243 transitions. Second operand 21 states. [2019-05-23 11:30:42,789 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:42,790 INFO L146 ILogger]: Finished difference Result 313 states and 326 transitions. [2019-05-23 11:30:42,790 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:42,790 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 120 [2019-05-23 11:30:42,791 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:42,793 INFO L146 ILogger]: With dead ends: 313 [2019-05-23 11:30:42,793 INFO L146 ILogger]: Without dead ends: 284 [2019-05-23 11:30:42,794 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:42,795 INFO L146 ILogger]: Start minimizeSevpa. Operand 284 states. [2019-05-23 11:30:42,801 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 284 to 255. [2019-05-23 11:30:42,802 INFO L146 ILogger]: Start removeUnreachable. Operand 255 states. [2019-05-23 11:30:42,802 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 255 states to 255 states and 267 transitions. [2019-05-23 11:30:42,803 INFO L146 ILogger]: Start accepts. Automaton has 255 states and 267 transitions. Word has length 120 [2019-05-23 11:30:42,803 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:42,803 INFO L146 ILogger]: Abstraction has 255 states and 267 transitions. [2019-05-23 11:30:42,803 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:42,803 INFO L146 ILogger]: Start isEmpty. Operand 255 states and 267 transitions. [2019-05-23 11:30:42,805 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:30:42,805 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:42,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:42,805 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:42,805 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:42,806 INFO L146 ILogger]: Analyzing trace with hash 1531750601, now seen corresponding path program 8 times [2019-05-23 11:30:42,806 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:42,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:42,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,807 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:42,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,817 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:42,965 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:42,966 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:42,966 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 11:30:42,976 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:43,002 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:43,003 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,003 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:43,005 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:43,109 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:43,128 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:43,128 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:43,129 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:43,129 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:43,129 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:43,129 INFO L146 ILogger]: Start difference. First operand 255 states and 267 transitions. Second operand 20 states. [2019-05-23 11:30:43,621 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:43,622 INFO L146 ILogger]: Finished difference Result 319 states and 330 transitions. [2019-05-23 11:30:43,622 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:43,622 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:30:43,623 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:43,624 INFO L146 ILogger]: With dead ends: 319 [2019-05-23 11:30:43,624 INFO L146 ILogger]: Without dead ends: 258 [2019-05-23 11:30:43,625 INFO L146 ILogger]: 0 DeclaredPredicates, 144 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:43,626 INFO L146 ILogger]: Start minimizeSevpa. Operand 258 states. [2019-05-23 11:30:43,631 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 258 to 223. [2019-05-23 11:30:43,632 INFO L146 ILogger]: Start removeUnreachable. Operand 223 states. [2019-05-23 11:30:43,632 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 223 states to 223 states and 233 transitions. [2019-05-23 11:30:43,633 INFO L146 ILogger]: Start accepts. Automaton has 223 states and 233 transitions. Word has length 120 [2019-05-23 11:30:43,633 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:43,633 INFO L146 ILogger]: Abstraction has 223 states and 233 transitions. [2019-05-23 11:30:43,633 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:43,633 INFO L146 ILogger]: Start isEmpty. Operand 223 states and 233 transitions. [2019-05-23 11:30:43,634 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:30:43,634 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:43,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:43,635 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:43,635 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:43,635 INFO L146 ILogger]: Analyzing trace with hash -887021481, now seen corresponding path program 9 times [2019-05-23 11:30:43,636 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:43,636 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:43,636 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,636 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:43,637 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:43,647 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,793 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:43,793 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:43,794 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 11:30:43,803 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:43,833 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:43,834 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,834 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:43,836 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:44,216 INFO L146 ILogger]: Checked inductivity of 69 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:44,235 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:44,235 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:44,235 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:44,236 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:44,236 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:44,236 INFO L146 ILogger]: Start difference. First operand 223 states and 233 transitions. Second operand 24 states. [2019-05-23 11:30:45,673 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:45,673 INFO L146 ILogger]: Finished difference Result 454 states and 471 transitions. [2019-05-23 11:30:45,673 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:45,674 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 120 [2019-05-23 11:30:45,674 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:45,676 INFO L146 ILogger]: With dead ends: 454 [2019-05-23 11:30:45,676 INFO L146 ILogger]: Without dead ends: 338 [2019-05-23 11:30:45,677 INFO L146 ILogger]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:45,678 INFO L146 ILogger]: Start minimizeSevpa. Operand 338 states. [2019-05-23 11:30:45,684 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 338 to 230. [2019-05-23 11:30:45,684 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:30:45,685 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 239 transitions. [2019-05-23 11:30:45,686 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 239 transitions. Word has length 120 [2019-05-23 11:30:45,686 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:45,686 INFO L146 ILogger]: Abstraction has 230 states and 239 transitions. [2019-05-23 11:30:45,686 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:45,686 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 239 transitions. [2019-05-23 11:30:45,687 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:30:45,687 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:45,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:45,688 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:45,688 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:45,688 INFO L146 ILogger]: Analyzing trace with hash 956479262, now seen corresponding path program 10 times [2019-05-23 11:30:45,688 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:45,688 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:45,689 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,689 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:45,689 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,699 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,227 INFO L146 ILogger]: Checked inductivity of 69 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:46,228 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:46,228 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 11:30:46,237 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:46,266 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:46,267 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,267 INFO L146 ILogger]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:46,269 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:46,377 INFO L146 ILogger]: Checked inductivity of 69 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:46,396 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:46,396 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:46,397 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:46,397 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:46,397 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:46,397 INFO L146 ILogger]: Start difference. First operand 230 states and 239 transitions. Second operand 20 states. [2019-05-23 11:30:46,841 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,842 INFO L146 ILogger]: Finished difference Result 263 states and 271 transitions. [2019-05-23 11:30:46,842 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:30:46,842 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:30:46,843 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,844 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:30:46,844 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:30:46,845 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:30:46,845 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:30:46,849 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 159. [2019-05-23 11:30:46,849 INFO L146 ILogger]: Start removeUnreachable. Operand 159 states. [2019-05-23 11:30:46,850 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 159 states to 159 states and 166 transitions. [2019-05-23 11:30:46,850 INFO L146 ILogger]: Start accepts. Automaton has 159 states and 166 transitions. Word has length 120 [2019-05-23 11:30:46,850 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,850 INFO L146 ILogger]: Abstraction has 159 states and 166 transitions. [2019-05-23 11:30:46,850 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:46,851 INFO L146 ILogger]: Start isEmpty. Operand 159 states and 166 transitions. [2019-05-23 11:30:46,852 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 121 [2019-05-23 11:30:46,852 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,852 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:46,852 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,852 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,853 INFO L146 ILogger]: Analyzing trace with hash 17031141, now seen corresponding path program 11 times [2019-05-23 11:30:46,853 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,853 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,854 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:46,854 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,864 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:47,021 INFO L146 ILogger]: Checked inductivity of 69 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:47,021 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:47,021 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 11:30:47,031 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:47,085 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:47,086 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:47,087 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:47,089 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:47,216 INFO L146 ILogger]: Checked inductivity of 69 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:30:47,235 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:47,235 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:47,237 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:47,237 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:47,237 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:47,237 INFO L146 ILogger]: Start difference. First operand 159 states and 166 transitions. Second operand 20 states. [2019-05-23 11:30:47,965 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:47,966 INFO L146 ILogger]: Finished difference Result 278 states and 291 transitions. [2019-05-23 11:30:47,967 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:47,968 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 120 [2019-05-23 11:30:47,968 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:47,969 INFO L146 ILogger]: With dead ends: 278 [2019-05-23 11:30:47,969 INFO L146 ILogger]: Without dead ends: 170 [2019-05-23 11:30:47,970 INFO L146 ILogger]: 0 DeclaredPredicates, 152 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:30:47,970 INFO L146 ILogger]: Start minimizeSevpa. Operand 170 states. [2019-05-23 11:30:47,973 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 170 to 165. [2019-05-23 11:30:47,974 INFO L146 ILogger]: Start removeUnreachable. Operand 165 states. [2019-05-23 11:30:47,974 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 165 states to 165 states and 171 transitions. [2019-05-23 11:30:47,974 INFO L146 ILogger]: Start accepts. Automaton has 165 states and 171 transitions. Word has length 120 [2019-05-23 11:30:47,975 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:47,975 INFO L146 ILogger]: Abstraction has 165 states and 171 transitions. [2019-05-23 11:30:47,975 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:47,975 INFO L146 ILogger]: Start isEmpty. Operand 165 states and 171 transitions. [2019-05-23 11:30:47,976 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 142 [2019-05-23 11:30:47,976 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:47,976 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:30:47,976 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:47,976 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:47,976 INFO L146 ILogger]: Analyzing trace with hash 1564040906, now seen corresponding path program 12 times [2019-05-23 11:30:47,976 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:47,976 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:47,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,977 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:47,977 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,988 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:48,409 INFO L146 ILogger]: Checked inductivity of 114 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:48,409 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:48,410 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 11:30:48,419 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:48,455 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:48,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:48,456 INFO L146 ILogger]: Trace formula consists of 230 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:48,459 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:48,588 INFO L146 ILogger]: Checked inductivity of 114 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:30:48,607 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:48,607 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:48,608 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:48,608 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:48,608 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:48,608 INFO L146 ILogger]: Start difference. First operand 165 states and 171 transitions. Second operand 21 states. [2019-05-23 11:30:49,279 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:49,279 INFO L146 ILogger]: Finished difference Result 176 states and 181 transitions. [2019-05-23 11:30:49,284 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:30:49,284 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 141 [2019-05-23 11:30:49,285 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:49,286 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:30:49,286 INFO L146 ILogger]: Without dead ends: 154 [2019-05-23 11:30:49,287 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=1576, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:30:49,287 INFO L146 ILogger]: Start minimizeSevpa. Operand 154 states. [2019-05-23 11:30:49,291 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 154 to 149. [2019-05-23 11:30:49,291 INFO L146 ILogger]: Start removeUnreachable. Operand 149 states. [2019-05-23 11:30:49,292 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 149 states to 149 states and 154 transitions. [2019-05-23 11:30:49,292 INFO L146 ILogger]: Start accepts. Automaton has 149 states and 154 transitions. Word has length 141 [2019-05-23 11:30:49,292 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:49,292 INFO L146 ILogger]: Abstraction has 149 states and 154 transitions. [2019-05-23 11:30:49,293 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:49,294 INFO L146 ILogger]: Start isEmpty. Operand 149 states and 154 transitions. [2019-05-23 11:30:49,295 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 149 [2019-05-23 11:30:49,295 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:49,296 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:30:49,296 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:49,296 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:49,296 INFO L146 ILogger]: Analyzing trace with hash 1584824151, now seen corresponding path program 13 times [2019-05-23 11:30:49,296 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:49,296 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:49,297 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,297 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:49,297 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:49,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:49,503 INFO L146 ILogger]: Checked inductivity of 129 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:49,503 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:49,503 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 11:30:49,513 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:49,551 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:49,552 INFO L146 ILogger]: Trace formula consists of 241 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:49,554 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:49,689 INFO L146 ILogger]: Checked inductivity of 129 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:30:49,707 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:49,707 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:49,707 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:49,708 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:49,708 INFO L146 ILogger]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:49,708 INFO L146 ILogger]: Start difference. First operand 149 states and 154 transitions. Second operand 21 states. [2019-05-23 11:30:51,250 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:51,251 INFO L146 ILogger]: Finished difference Result 167 states and 172 transitions. [2019-05-23 11:30:51,251 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:51,251 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 148 [2019-05-23 11:30:51,252 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:51,253 INFO L146 ILogger]: With dead ends: 167 [2019-05-23 11:30:51,253 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:30:51,254 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=1426, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:30:51,254 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:30:51,258 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 156. [2019-05-23 11:30:51,259 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:30:51,259 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 161 transitions. [2019-05-23 11:30:51,259 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 161 transitions. Word has length 148 [2019-05-23 11:30:51,260 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:51,260 INFO L146 ILogger]: Abstraction has 156 states and 161 transitions. [2019-05-23 11:30:51,260 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:51,260 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 161 transitions. [2019-05-23 11:30:51,260 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 156 [2019-05-23 11:30:51,261 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:51,261 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-05-23 11:30:51,261 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:51,261 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:51,261 INFO L146 ILogger]: Analyzing trace with hash 739259747, now seen corresponding path program 14 times [2019-05-23 11:30:51,261 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:51,261 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:51,262 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:51,262 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:51,262 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:51,290 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:52,421 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2019-05-23 11:30:54,200 WARN L146 ILogger]: Spent 142.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2019-05-23 11:30:57,382 INFO L146 ILogger]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:57,382 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:57,382 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 11:30:57,391 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:57,430 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:57,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:57,433 WARN L146 ILogger]: Trace formula consists of 252 conjuncts, 142 conjunts are in the unsatisfiable core [2019-05-23 11:30:57,436 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:01,104 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:31:01,104 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:01,107 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:01,108 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:31:01,108 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:31:01,397 INFO L146 ILogger]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:31:01,415 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:01,416 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 68] total 98 [2019-05-23 11:31:01,416 INFO L146 ILogger]: Interpolant automaton has 98 states [2019-05-23 11:31:01,417 INFO L146 ILogger]: Constructing interpolant automaton starting with 98 interpolants. [2019-05-23 11:31:01,420 INFO L146 ILogger]: CoverageRelationStatistics Valid=347, Invalid=9159, Unknown=0, NotChecked=0, Total=9506 [2019-05-23 11:31:01,420 INFO L146 ILogger]: Start difference. First operand 156 states and 161 transitions. Second operand 98 states. [2019-05-23 11:31:09,706 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:09,706 INFO L146 ILogger]: Finished difference Result 296 states and 306 transitions. [2019-05-23 11:31:09,706 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2019-05-23 11:31:09,706 INFO L146 ILogger]: Start accepts. Automaton has 98 states. Word has length 155 [2019-05-23 11:31:09,707 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:09,708 INFO L146 ILogger]: With dead ends: 296 [2019-05-23 11:31:09,708 INFO L146 ILogger]: Without dead ends: 290 [2019-05-23 11:31:09,713 INFO L146 ILogger]: 0 DeclaredPredicates, 258 GetRequests, 113 SyntacticMatches, 19 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3976 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=535, Invalid=15721, Unknown=0, NotChecked=0, Total=16256 [2019-05-23 11:31:09,714 INFO L146 ILogger]: Start minimizeSevpa. Operand 290 states. [2019-05-23 11:31:09,720 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 290 to 263. [2019-05-23 11:31:09,720 INFO L146 ILogger]: Start removeUnreachable. Operand 263 states. [2019-05-23 11:31:09,721 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 263 states to 263 states and 273 transitions. [2019-05-23 11:31:09,721 INFO L146 ILogger]: Start accepts. Automaton has 263 states and 273 transitions. Word has length 155 [2019-05-23 11:31:09,721 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:09,721 INFO L146 ILogger]: Abstraction has 263 states and 273 transitions. [2019-05-23 11:31:09,722 INFO L146 ILogger]: Interpolant automaton has 98 states. [2019-05-23 11:31:09,722 INFO L146 ILogger]: Start isEmpty. Operand 263 states and 273 transitions. [2019-05-23 11:31:09,723 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:31:09,723 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:09,723 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, 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] [2019-05-23 11:31:09,723 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:09,723 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:09,724 INFO L146 ILogger]: Analyzing trace with hash 1401251255, now seen corresponding path program 15 times [2019-05-23 11:31:09,724 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:09,724 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:09,724 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:09,725 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:09,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:09,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:09,905 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:09,905 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:09,905 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 11:31:09,915 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:31:09,966 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:31:09,966 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:09,968 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:31:09,970 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:10,278 INFO L146 ILogger]: Checked inductivity of 166 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:10,296 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:10,297 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:31:10,297 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:31:10,297 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:31:10,297 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:10,298 INFO L146 ILogger]: Start difference. First operand 263 states and 273 transitions. Second operand 32 states. [2019-05-23 11:31:11,747 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:11,747 INFO L146 ILogger]: Finished difference Result 509 states and 528 transitions. [2019-05-23 11:31:11,748 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:31:11,748 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 162 [2019-05-23 11:31:11,748 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:11,751 INFO L146 ILogger]: With dead ends: 509 [2019-05-23 11:31:11,751 INFO L146 ILogger]: Without dead ends: 450 [2019-05-23 11:31:11,752 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=541, Invalid=4151, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:31:11,753 INFO L146 ILogger]: Start minimizeSevpa. Operand 450 states. [2019-05-23 11:31:11,762 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 450 to 346. [2019-05-23 11:31:11,762 INFO L146 ILogger]: Start removeUnreachable. Operand 346 states. [2019-05-23 11:31:11,763 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 346 states to 346 states and 359 transitions. [2019-05-23 11:31:11,763 INFO L146 ILogger]: Start accepts. Automaton has 346 states and 359 transitions. Word has length 162 [2019-05-23 11:31:11,763 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:11,763 INFO L146 ILogger]: Abstraction has 346 states and 359 transitions. [2019-05-23 11:31:11,763 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:31:11,763 INFO L146 ILogger]: Start isEmpty. Operand 346 states and 359 transitions. [2019-05-23 11:31:11,765 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:31:11,765 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:11,765 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, 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] [2019-05-23 11:31:11,765 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:11,765 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:11,766 INFO L146 ILogger]: Analyzing trace with hash -2067015209, now seen corresponding path program 16 times [2019-05-23 11:31:11,766 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:11,766 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:11,766 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:11,767 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:11,767 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:11,778 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:11,950 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:11,950 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:11,950 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 11:31:11,959 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:31:11,998 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:31:11,998 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:11,999 INFO L146 ILogger]: Trace formula consists of 261 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:31:12,001 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:12,206 INFO L146 ILogger]: Checked inductivity of 166 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:12,232 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:12,233 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:31:12,233 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:31:12,233 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:31:12,233 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:31:12,234 INFO L146 ILogger]: Start difference. First operand 346 states and 359 transitions. Second operand 28 states. [2019-05-23 11:31:13,113 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:13,113 INFO L146 ILogger]: Finished difference Result 533 states and 552 transitions. [2019-05-23 11:31:13,119 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-05-23 11:31:13,120 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 162 [2019-05-23 11:31:13,120 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:13,121 INFO L146 ILogger]: With dead ends: 533 [2019-05-23 11:31:13,121 INFO L146 ILogger]: Without dead ends: 467 [2019-05-23 11:31:13,122 INFO L146 ILogger]: 0 DeclaredPredicates, 209 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=459, Invalid=2847, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:31:13,122 INFO L146 ILogger]: Start minimizeSevpa. Operand 467 states. [2019-05-23 11:31:13,130 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 467 to 384. [2019-05-23 11:31:13,131 INFO L146 ILogger]: Start removeUnreachable. Operand 384 states. [2019-05-23 11:31:13,131 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 384 states to 384 states and 398 transitions. [2019-05-23 11:31:13,131 INFO L146 ILogger]: Start accepts. Automaton has 384 states and 398 transitions. Word has length 162 [2019-05-23 11:31:13,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:13,132 INFO L146 ILogger]: Abstraction has 384 states and 398 transitions. [2019-05-23 11:31:13,132 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:31:13,132 INFO L146 ILogger]: Start isEmpty. Operand 384 states and 398 transitions. [2019-05-23 11:31:13,132 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:31:13,132 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:13,133 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, 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] [2019-05-23 11:31:13,133 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:13,133 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:13,133 INFO L146 ILogger]: Analyzing trace with hash -1448158416, now seen corresponding path program 17 times [2019-05-23 11:31:13,133 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:13,133 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:13,134 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:13,134 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:13,134 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:13,145 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:13,400 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:13,400 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:13,400 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 11:31:13,409 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:31:13,455 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:31:13,455 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:13,456 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:31:13,459 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:13,688 INFO L146 ILogger]: Checked inductivity of 166 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:13,707 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:13,707 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 28 [2019-05-23 11:31:13,707 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:31:13,708 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:31:13,708 INFO L146 ILogger]: CoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:31:13,708 INFO L146 ILogger]: Start difference. First operand 384 states and 398 transitions. Second operand 28 states. [2019-05-23 11:31:14,590 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:14,590 INFO L146 ILogger]: Finished difference Result 726 states and 751 transitions. [2019-05-23 11:31:14,591 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:31:14,591 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 162 [2019-05-23 11:31:14,591 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:14,593 INFO L146 ILogger]: With dead ends: 726 [2019-05-23 11:31:14,594 INFO L146 ILogger]: Without dead ends: 599 [2019-05-23 11:31:14,594 INFO L146 ILogger]: 0 DeclaredPredicates, 212 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=469, Invalid=2953, Unknown=0, NotChecked=0, Total=3422 [2019-05-23 11:31:14,595 INFO L146 ILogger]: Start minimizeSevpa. Operand 599 states. [2019-05-23 11:31:14,607 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 599 to 497. [2019-05-23 11:31:14,607 INFO L146 ILogger]: Start removeUnreachable. Operand 497 states. [2019-05-23 11:31:14,608 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 497 states to 497 states and 515 transitions. [2019-05-23 11:31:14,608 INFO L146 ILogger]: Start accepts. Automaton has 497 states and 515 transitions. Word has length 162 [2019-05-23 11:31:14,608 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:14,609 INFO L146 ILogger]: Abstraction has 497 states and 515 transitions. [2019-05-23 11:31:14,609 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:31:14,609 INFO L146 ILogger]: Start isEmpty. Operand 497 states and 515 transitions. [2019-05-23 11:31:14,610 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:31:14,610 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:14,610 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, 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] [2019-05-23 11:31:14,611 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:14,611 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:14,611 INFO L146 ILogger]: Analyzing trace with hash -1262095536, now seen corresponding path program 18 times [2019-05-23 11:31:14,611 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:14,611 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:14,612 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:14,612 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:14,612 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:14,624 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:15,278 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:15,278 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:15,279 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 11:31:15,287 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:31:15,329 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:31:15,329 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:15,332 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:31:15,334 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:15,567 INFO L146 ILogger]: Checked inductivity of 166 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:15,585 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:15,585 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2019-05-23 11:31:15,586 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:31:15,586 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:31:15,586 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:31:15,586 INFO L146 ILogger]: Start difference. First operand 497 states and 515 transitions. Second operand 32 states. [2019-05-23 11:31:16,858 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:16,858 INFO L146 ILogger]: Finished difference Result 767 states and 785 transitions. [2019-05-23 11:31:16,859 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:31:16,859 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 162 [2019-05-23 11:31:16,859 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:16,862 INFO L146 ILogger]: With dead ends: 767 [2019-05-23 11:31:16,862 INFO L146 ILogger]: Without dead ends: 586 [2019-05-23 11:31:16,863 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=541, Invalid=4151, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:31:16,864 INFO L146 ILogger]: Start minimizeSevpa. Operand 586 states. [2019-05-23 11:31:16,873 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 586 to 383. [2019-05-23 11:31:16,874 INFO L146 ILogger]: Start removeUnreachable. Operand 383 states. [2019-05-23 11:31:16,874 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 383 states to 383 states and 394 transitions. [2019-05-23 11:31:16,875 INFO L146 ILogger]: Start accepts. Automaton has 383 states and 394 transitions. Word has length 162 [2019-05-23 11:31:16,875 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:16,875 INFO L146 ILogger]: Abstraction has 383 states and 394 transitions. [2019-05-23 11:31:16,875 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:31:16,875 INFO L146 ILogger]: Start isEmpty. Operand 383 states and 394 transitions. [2019-05-23 11:31:16,876 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:31:16,876 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:16,877 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, 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] [2019-05-23 11:31:16,877 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:16,877 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:16,877 INFO L146 ILogger]: Analyzing trace with hash 1680157079, now seen corresponding path program 19 times [2019-05-23 11:31:16,877 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:16,878 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:16,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:16,878 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:31:16,878 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:16,890 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:17,149 INFO L146 ILogger]: Checked inductivity of 166 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:17,149 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:17,150 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 11:31:17,160 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:17,206 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:17,207 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:31:17,209 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:17,374 INFO L146 ILogger]: Checked inductivity of 166 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:17,394 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:17,394 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:31:17,394 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:31:17,394 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:31:17,395 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:31:17,395 INFO L146 ILogger]: Start difference. First operand 383 states and 394 transitions. Second operand 26 states. [2019-05-23 11:31:17,892 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:31:17,892 INFO L146 ILogger]: Finished difference Result 492 states and 502 transitions. [2019-05-23 11:31:17,895 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:31:17,895 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 162 [2019-05-23 11:31:17,896 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:31:17,897 INFO L146 ILogger]: With dead ends: 492 [2019-05-23 11:31:17,897 INFO L146 ILogger]: Without dead ends: 364 [2019-05-23 11:31:17,898 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:31:17,898 INFO L146 ILogger]: Start minimizeSevpa. Operand 364 states. [2019-05-23 11:31:17,906 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 364 to 353. [2019-05-23 11:31:17,906 INFO L146 ILogger]: Start removeUnreachable. Operand 353 states. [2019-05-23 11:31:17,907 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 353 states to 353 states and 362 transitions. [2019-05-23 11:31:17,907 INFO L146 ILogger]: Start accepts. Automaton has 353 states and 362 transitions. Word has length 162 [2019-05-23 11:31:17,907 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:31:17,907 INFO L146 ILogger]: Abstraction has 353 states and 362 transitions. [2019-05-23 11:31:17,907 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:31:17,908 INFO L146 ILogger]: Start isEmpty. Operand 353 states and 362 transitions. [2019-05-23 11:31:17,909 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 163 [2019-05-23 11:31:17,909 INFO L146 ILogger]: Found error trace [2019-05-23 11:31:17,909 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, 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] [2019-05-23 11:31:17,909 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:31:17,909 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:31:17,910 INFO L146 ILogger]: Analyzing trace with hash 309842800, now seen corresponding path program 20 times [2019-05-23 11:31:17,910 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:31:17,910 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:31:17,910 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:17,911 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:31:17,911 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:31:17,921 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:18,135 INFO L146 ILogger]: Checked inductivity of 166 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:18,135 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:31:18,135 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 11:31:18,144 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:31:18,183 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:31:18,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:31:18,184 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:31:18,186 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:31:18,333 INFO L146 ILogger]: Checked inductivity of 166 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:31:18,351 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:31:18,351 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:31:18,351 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:31:18,352 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:31:18,352 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:31:18,352 INFO L146 ILogger]: Start difference. First operand 353 states and 362 transitions. Second operand 26 states.