java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-examples/standard_init1_false-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:15:16,844 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:15:16,846 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:15:16,858 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:15:16,859 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:15:16,860 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:15:16,861 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:15:16,863 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:15:16,865 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:15:16,866 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:15:16,867 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:15:16,867 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:15:16,868 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:15:16,869 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:15:16,870 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:15:16,871 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:15:16,872 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:15:16,873 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:15:16,875 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:15:16,877 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:15:16,878 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:15:16,879 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:15:16,881 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:15:16,881 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:15:16,882 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:15:16,882 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:15:16,883 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:15:16,884 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:15:16,884 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:15:16,885 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:15:16,886 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:15:16,887 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:15:16,888 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:15:16,888 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:15:16,889 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:15:16,889 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:15:16,889 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:15:16,890 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:15:16,891 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:15:16,891 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:15:16,907 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:15:16,907 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:15:16,908 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:15:16,908 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:15:16,909 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:15:16,909 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:15:16,909 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:15:16,909 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:15:16,909 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:15:16,910 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:15:16,910 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:15:16,910 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:15:16,910 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:15:16,911 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:15:16,911 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:15:16,911 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:15:16,911 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:15:16,911 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:15:16,912 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:15:16,912 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:15:16,912 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:15:16,912 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:15:16,913 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:15:16,913 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:15:16,913 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:15:16,913 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:15:16,913 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:15:16,913 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:15:16,914 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 11:15:16,946 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:15:16,959 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:15:16,962 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:15:16,964 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:15:16,964 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:15:16,965 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_init1_false-unreach-call_ground.i [2019-05-23 11:15:17,032 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a4ff840/37a98611ba8d48cca74497124284d177/FLAGde38e6d04 [2019-05-23 11:15:17,458 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:15:17,459 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_init1_false-unreach-call_ground.i [2019-05-23 11:15:17,465 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a4ff840/37a98611ba8d48cca74497124284d177/FLAGde38e6d04 [2019-05-23 11:15:17,847 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1a4ff840/37a98611ba8d48cca74497124284d177 [2019-05-23 11:15:17,858 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:15:17,860 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:15:17,861 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:17,861 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:15:17,865 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:15:17,866 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:17" (1/1) ... [2019-05-23 11:15:17,869 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2311937a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:17, skipping insertion in model container [2019-05-23 11:15:17,869 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:15:17" (1/1) ... [2019-05-23 11:15:17,877 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:15:17,897 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:15:18,076 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:18,080 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:15:18,105 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:15:18,137 INFO L146 ILogger]: Completed translation [2019-05-23 11:15:18,138 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18 WrapperNode [2019-05-23 11:15:18,138 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:15:18,139 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:18,140 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:15:18,140 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:15:18,151 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,168 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,199 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:15:18,199 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:15:18,200 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:15:18,201 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:15:18,215 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,216 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,217 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,218 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,224 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,229 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,231 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (1/1) ... [2019-05-23 11:15:18,240 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:15:18,243 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:15:18,244 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:15:18,244 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:15:18,245 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (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 11:15:18,462 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:15:18,463 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:15:18,463 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:15:18,463 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:15:18,463 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:15:18,463 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:15:18,819 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:15:18,820 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:15:18,821 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:18 BoogieIcfgContainer [2019-05-23 11:15:18,821 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:15:18,827 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:15:18,827 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:15:18,830 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:15:18,830 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:15:17" (1/3) ... [2019-05-23 11:15:18,831 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f1461e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:18, skipping insertion in model container [2019-05-23 11:15:18,831 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:15:18" (2/3) ... [2019-05-23 11:15:18,831 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f1461e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:15:18, skipping insertion in model container [2019-05-23 11:15:18,832 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:15:18" (3/3) ... [2019-05-23 11:15:18,833 INFO L146 ILogger]: Analyzing ICFG standard_init1_false-unreach-call_ground.i [2019-05-23 11:15:18,843 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:15:18,850 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:15:18,866 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:15:18,897 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:15:18,898 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:15:18,899 INFO L146 ILogger]: Hoare is true [2019-05-23 11:15:18,899 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:15:18,899 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:15:18,899 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:15:18,899 INFO L146 ILogger]: Difference is false [2019-05-23 11:15:18,899 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:15:18,899 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:15:18,915 INFO L146 ILogger]: Start isEmpty. Operand 29 states. [2019-05-23 11:15:18,922 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:15:18,923 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:18,923 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:18,928 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:18,938 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:18,938 INFO L146 ILogger]: Analyzing trace with hash 1344087954, now seen corresponding path program 1 times [2019-05-23 11:15:18,939 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:18,940 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:18,979 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:18,979 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:18,980 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,011 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,055 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 11:15:19,057 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:19,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:15:19,060 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:15:19,072 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:15:19,073 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:15:19,075 INFO L146 ILogger]: Start difference. First operand 29 states. Second operand 2 states. [2019-05-23 11:15:19,090 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:19,090 INFO L146 ILogger]: Finished difference Result 49 states and 55 transitions. [2019-05-23 11:15:19,090 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:15:19,092 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 16 [2019-05-23 11:15:19,092 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:19,100 INFO L146 ILogger]: With dead ends: 49 [2019-05-23 11:15:19,101 INFO L146 ILogger]: Without dead ends: 23 [2019-05-23 11:15:19,103 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 11:15:19,117 INFO L146 ILogger]: Start minimizeSevpa. Operand 23 states. [2019-05-23 11:15:19,128 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-05-23 11:15:19,129 INFO L146 ILogger]: Start removeUnreachable. Operand 23 states. [2019-05-23 11:15:19,130 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2019-05-23 11:15:19,131 INFO L146 ILogger]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2019-05-23 11:15:19,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:19,131 INFO L146 ILogger]: Abstraction has 23 states and 24 transitions. [2019-05-23 11:15:19,132 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:15:19,132 INFO L146 ILogger]: Start isEmpty. Operand 23 states and 24 transitions. [2019-05-23 11:15:19,132 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 17 [2019-05-23 11:15:19,132 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:19,133 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:19,133 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:19,133 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:19,134 INFO L146 ILogger]: Analyzing trace with hash -1771798312, now seen corresponding path program 1 times [2019-05-23 11:15:19,134 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:19,134 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:19,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,135 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:19,135 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,149 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,206 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 11:15:19,206 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:15:19,207 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:15:19,208 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:15:19,209 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:15:19,209 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:19,209 INFO L146 ILogger]: Start difference. First operand 23 states and 24 transitions. Second operand 3 states. [2019-05-23 11:15:19,256 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:19,257 INFO L146 ILogger]: Finished difference Result 40 states and 42 transitions. [2019-05-23 11:15:19,258 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:15:19,258 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 16 [2019-05-23 11:15:19,258 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:19,259 INFO L146 ILogger]: With dead ends: 40 [2019-05-23 11:15:19,259 INFO L146 ILogger]: Without dead ends: 26 [2019-05-23 11:15:19,261 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:15:19,261 INFO L146 ILogger]: Start minimizeSevpa. Operand 26 states. [2019-05-23 11:15:19,265 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-05-23 11:15:19,265 INFO L146 ILogger]: Start removeUnreachable. Operand 24 states. [2019-05-23 11:15:19,266 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-05-23 11:15:19,267 INFO L146 ILogger]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 16 [2019-05-23 11:15:19,267 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:19,267 INFO L146 ILogger]: Abstraction has 24 states and 25 transitions. [2019-05-23 11:15:19,267 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:15:19,267 INFO L146 ILogger]: Start isEmpty. Operand 24 states and 25 transitions. [2019-05-23 11:15:19,268 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 20 [2019-05-23 11:15:19,268 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:19,268 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:19,269 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:19,269 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:19,269 INFO L146 ILogger]: Analyzing trace with hash 1901167520, now seen corresponding path program 1 times [2019-05-23 11:15:19,269 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:19,269 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:19,270 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,271 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:19,271 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,288 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,362 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 11:15:19,362 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:19,362 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 11:15:19,382 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:19,405 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,407 INFO L146 ILogger]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:15:19,413 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:19,439 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 11:15:19,468 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:19,469 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-05-23 11:15:19,470 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:15:19,471 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:15:19,471 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:19,471 INFO L146 ILogger]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2019-05-23 11:15:19,527 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:19,527 INFO L146 ILogger]: Finished difference Result 43 states and 45 transitions. [2019-05-23 11:15:19,528 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:15:19,528 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 19 [2019-05-23 11:15:19,528 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:19,529 INFO L146 ILogger]: With dead ends: 43 [2019-05-23 11:15:19,529 INFO L146 ILogger]: Without dead ends: 29 [2019-05-23 11:15:19,530 INFO L146 ILogger]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:15:19,530 INFO L146 ILogger]: Start minimizeSevpa. Operand 29 states. [2019-05-23 11:15:19,534 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-05-23 11:15:19,534 INFO L146 ILogger]: Start removeUnreachable. Operand 27 states. [2019-05-23 11:15:19,535 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-05-23 11:15:19,535 INFO L146 ILogger]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-05-23 11:15:19,535 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:19,536 INFO L146 ILogger]: Abstraction has 27 states and 28 transitions. [2019-05-23 11:15:19,536 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:15:19,536 INFO L146 ILogger]: Start isEmpty. Operand 27 states and 28 transitions. [2019-05-23 11:15:19,537 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 23 [2019-05-23 11:15:19,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:19,537 INFO L146 ILogger]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:19,537 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:19,538 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:19,538 INFO L146 ILogger]: Analyzing trace with hash 344468440, now seen corresponding path program 2 times [2019-05-23 11:15:19,538 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:19,538 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:19,539 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,539 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:19,540 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:19,553 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,657 INFO L146 ILogger]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:19,658 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:19,658 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 11:15:19,676 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:19,701 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:19,701 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:19,701 INFO L146 ILogger]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:15:19,703 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:19,720 INFO L146 ILogger]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:19,742 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:19,742 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-05-23 11:15:19,743 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:15:19,743 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:15:19,743 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:19,743 INFO L146 ILogger]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states. [2019-05-23 11:15:20,033 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:20,034 INFO L146 ILogger]: Finished difference Result 46 states and 48 transitions. [2019-05-23 11:15:20,034 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:15:20,034 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 22 [2019-05-23 11:15:20,035 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:20,035 INFO L146 ILogger]: With dead ends: 46 [2019-05-23 11:15:20,035 INFO L146 ILogger]: Without dead ends: 32 [2019-05-23 11:15:20,036 INFO L146 ILogger]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:15:20,036 INFO L146 ILogger]: Start minimizeSevpa. Operand 32 states. [2019-05-23 11:15:20,040 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-05-23 11:15:20,040 INFO L146 ILogger]: Start removeUnreachable. Operand 30 states. [2019-05-23 11:15:20,041 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-05-23 11:15:20,041 INFO L146 ILogger]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2019-05-23 11:15:20,041 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:20,041 INFO L146 ILogger]: Abstraction has 30 states and 31 transitions. [2019-05-23 11:15:20,042 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:15:20,042 INFO L146 ILogger]: Start isEmpty. Operand 30 states and 31 transitions. [2019-05-23 11:15:20,042 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 26 [2019-05-23 11:15:20,043 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:20,043 INFO L146 ILogger]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:20,043 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:20,043 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:20,044 INFO L146 ILogger]: Analyzing trace with hash 1779038368, now seen corresponding path program 3 times [2019-05-23 11:15:20,044 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:20,044 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:20,045 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,045 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:20,045 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,058 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,173 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:20,174 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:20,174 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 11:15:20,190 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:20,215 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:15:20,216 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,217 INFO L146 ILogger]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:15:20,218 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:20,257 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:20,275 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:20,275 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-05-23 11:15:20,276 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:15:20,276 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:15:20,277 INFO L146 ILogger]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:20,277 INFO L146 ILogger]: Start difference. First operand 30 states and 31 transitions. Second operand 7 states. [2019-05-23 11:15:20,350 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:20,351 INFO L146 ILogger]: Finished difference Result 49 states and 51 transitions. [2019-05-23 11:15:20,354 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:15:20,354 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 25 [2019-05-23 11:15:20,354 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:20,355 INFO L146 ILogger]: With dead ends: 49 [2019-05-23 11:15:20,355 INFO L146 ILogger]: Without dead ends: 35 [2019-05-23 11:15:20,356 INFO L146 ILogger]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:15:20,356 INFO L146 ILogger]: Start minimizeSevpa. Operand 35 states. [2019-05-23 11:15:20,360 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-05-23 11:15:20,360 INFO L146 ILogger]: Start removeUnreachable. Operand 33 states. [2019-05-23 11:15:20,361 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-05-23 11:15:20,361 INFO L146 ILogger]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 25 [2019-05-23 11:15:20,362 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:20,362 INFO L146 ILogger]: Abstraction has 33 states and 34 transitions. [2019-05-23 11:15:20,362 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:15:20,362 INFO L146 ILogger]: Start isEmpty. Operand 33 states and 34 transitions. [2019-05-23 11:15:20,363 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:15:20,363 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:20,363 INFO L146 ILogger]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:20,363 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:20,364 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:20,364 INFO L146 ILogger]: Analyzing trace with hash -167799080, now seen corresponding path program 4 times [2019-05-23 11:15:20,364 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:20,364 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:20,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,365 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:20,365 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,380 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,594 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:20,594 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:20,594 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 11:15:20,608 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:20,623 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:20,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,624 INFO L146 ILogger]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:15:20,635 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:20,675 INFO L146 ILogger]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:20,699 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:20,699 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-05-23 11:15:20,700 INFO L146 ILogger]: Interpolant automaton has 8 states [2019-05-23 11:15:20,700 INFO L146 ILogger]: Constructing interpolant automaton starting with 8 interpolants. [2019-05-23 11:15:20,700 INFO L146 ILogger]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:20,700 INFO L146 ILogger]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2019-05-23 11:15:20,769 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:20,769 INFO L146 ILogger]: Finished difference Result 52 states and 54 transitions. [2019-05-23 11:15:20,771 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:15:20,771 INFO L146 ILogger]: Start accepts. Automaton has 8 states. Word has length 28 [2019-05-23 11:15:20,771 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:20,772 INFO L146 ILogger]: With dead ends: 52 [2019-05-23 11:15:20,772 INFO L146 ILogger]: Without dead ends: 38 [2019-05-23 11:15:20,773 INFO L146 ILogger]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:15:20,773 INFO L146 ILogger]: Start minimizeSevpa. Operand 38 states. [2019-05-23 11:15:20,776 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-05-23 11:15:20,776 INFO L146 ILogger]: Start removeUnreachable. Operand 36 states. [2019-05-23 11:15:20,777 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-05-23 11:15:20,777 INFO L146 ILogger]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 28 [2019-05-23 11:15:20,778 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:20,778 INFO L146 ILogger]: Abstraction has 36 states and 37 transitions. [2019-05-23 11:15:20,778 INFO L146 ILogger]: Interpolant automaton has 8 states. [2019-05-23 11:15:20,778 INFO L146 ILogger]: Start isEmpty. Operand 36 states and 37 transitions. [2019-05-23 11:15:20,779 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:15:20,779 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:20,779 INFO L146 ILogger]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:20,779 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:20,779 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:20,780 INFO L146 ILogger]: Analyzing trace with hash 836152736, now seen corresponding path program 5 times [2019-05-23 11:15:20,780 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:20,780 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:20,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,781 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:20,781 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:20,794 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,902 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:20,903 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:20,903 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 11:15:20,912 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:20,982 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:15:20,982 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:20,984 INFO L146 ILogger]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:15:20,986 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:21,078 INFO L146 ILogger]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:21,108 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:21,109 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-05-23 11:15:21,109 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:15:21,110 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:15:21,110 INFO L146 ILogger]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:21,110 INFO L146 ILogger]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2019-05-23 11:15:21,379 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:21,379 INFO L146 ILogger]: Finished difference Result 55 states and 57 transitions. [2019-05-23 11:15:21,379 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:15:21,379 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 31 [2019-05-23 11:15:21,379 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:21,380 INFO L146 ILogger]: With dead ends: 55 [2019-05-23 11:15:21,380 INFO L146 ILogger]: Without dead ends: 41 [2019-05-23 11:15:21,381 INFO L146 ILogger]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:15:21,381 INFO L146 ILogger]: Start minimizeSevpa. Operand 41 states. [2019-05-23 11:15:21,384 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-05-23 11:15:21,384 INFO L146 ILogger]: Start removeUnreachable. Operand 39 states. [2019-05-23 11:15:21,385 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2019-05-23 11:15:21,385 INFO L146 ILogger]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 31 [2019-05-23 11:15:21,385 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:21,386 INFO L146 ILogger]: Abstraction has 39 states and 40 transitions. [2019-05-23 11:15:21,386 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:15:21,386 INFO L146 ILogger]: Start isEmpty. Operand 39 states and 40 transitions. [2019-05-23 11:15:21,387 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 35 [2019-05-23 11:15:21,387 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:21,387 INFO L146 ILogger]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:21,387 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:21,387 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:21,388 INFO L146 ILogger]: Analyzing trace with hash -587546152, now seen corresponding path program 6 times [2019-05-23 11:15:21,388 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:21,388 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:21,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,389 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:21,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,403 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:21,511 INFO L146 ILogger]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:21,511 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:21,512 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 11:15:21,530 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:21,596 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:15:21,596 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:21,597 INFO L146 ILogger]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:15:21,599 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:21,617 INFO L146 ILogger]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:21,636 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:21,636 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-05-23 11:15:21,637 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:15:21,637 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:15:21,637 INFO L146 ILogger]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:21,637 INFO L146 ILogger]: Start difference. First operand 39 states and 40 transitions. Second operand 10 states. [2019-05-23 11:15:21,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:21,723 INFO L146 ILogger]: Finished difference Result 58 states and 60 transitions. [2019-05-23 11:15:21,730 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-05-23 11:15:21,730 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 34 [2019-05-23 11:15:21,730 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:21,731 INFO L146 ILogger]: With dead ends: 58 [2019-05-23 11:15:21,731 INFO L146 ILogger]: Without dead ends: 44 [2019-05-23 11:15:21,731 INFO L146 ILogger]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:15:21,732 INFO L146 ILogger]: Start minimizeSevpa. Operand 44 states. [2019-05-23 11:15:21,735 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-05-23 11:15:21,735 INFO L146 ILogger]: Start removeUnreachable. Operand 42 states. [2019-05-23 11:15:21,736 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-05-23 11:15:21,736 INFO L146 ILogger]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 34 [2019-05-23 11:15:21,736 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:21,737 INFO L146 ILogger]: Abstraction has 42 states and 43 transitions. [2019-05-23 11:15:21,737 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:15:21,737 INFO L146 ILogger]: Start isEmpty. Operand 42 states and 43 transitions. [2019-05-23 11:15:21,738 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 38 [2019-05-23 11:15:21,738 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:21,738 INFO L146 ILogger]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:21,738 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:21,739 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:21,739 INFO L146 ILogger]: Analyzing trace with hash -1199070560, now seen corresponding path program 7 times [2019-05-23 11:15:21,739 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:21,739 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:21,740 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,740 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:21,740 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:21,754 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,163 INFO L146 ILogger]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:22,163 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:22,164 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 11:15:22,172 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:22,192 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,193 INFO L146 ILogger]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:15:22,195 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:22,229 INFO L146 ILogger]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:22,250 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:22,250 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-05-23 11:15:22,250 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:15:22,250 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:15:22,251 INFO L146 ILogger]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:22,251 INFO L146 ILogger]: Start difference. First operand 42 states and 43 transitions. Second operand 11 states. [2019-05-23 11:15:22,342 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:22,342 INFO L146 ILogger]: Finished difference Result 61 states and 63 transitions. [2019-05-23 11:15:22,343 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:15:22,343 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 37 [2019-05-23 11:15:22,344 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:22,344 INFO L146 ILogger]: With dead ends: 61 [2019-05-23 11:15:22,344 INFO L146 ILogger]: Without dead ends: 47 [2019-05-23 11:15:22,345 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:15:22,345 INFO L146 ILogger]: Start minimizeSevpa. Operand 47 states. [2019-05-23 11:15:22,348 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-05-23 11:15:22,349 INFO L146 ILogger]: Start removeUnreachable. Operand 45 states. [2019-05-23 11:15:22,349 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-05-23 11:15:22,349 INFO L146 ILogger]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 37 [2019-05-23 11:15:22,350 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:22,350 INFO L146 ILogger]: Abstraction has 45 states and 46 transitions. [2019-05-23 11:15:22,350 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:15:22,350 INFO L146 ILogger]: Start isEmpty. Operand 45 states and 46 transitions. [2019-05-23 11:15:22,351 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:15:22,351 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:22,351 INFO L146 ILogger]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:22,352 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:22,352 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:22,352 INFO L146 ILogger]: Analyzing trace with hash 128560344, now seen corresponding path program 8 times [2019-05-23 11:15:22,352 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:22,352 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:22,353 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,353 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:22,353 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,366 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,580 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:22,581 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:22,581 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:22,591 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:22,623 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:22,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:22,624 INFO L146 ILogger]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:15:22,626 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:22,687 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:22,714 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:22,714 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-05-23 11:15:22,715 INFO L146 ILogger]: Interpolant automaton has 12 states [2019-05-23 11:15:22,715 INFO L146 ILogger]: Constructing interpolant automaton starting with 12 interpolants. [2019-05-23 11:15:22,716 INFO L146 ILogger]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:22,716 INFO L146 ILogger]: Start difference. First operand 45 states and 46 transitions. Second operand 12 states. [2019-05-23 11:15:22,907 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:22,908 INFO L146 ILogger]: Finished difference Result 64 states and 66 transitions. [2019-05-23 11:15:22,908 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-05-23 11:15:22,908 INFO L146 ILogger]: Start accepts. Automaton has 12 states. Word has length 40 [2019-05-23 11:15:22,909 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:22,909 INFO L146 ILogger]: With dead ends: 64 [2019-05-23 11:15:22,910 INFO L146 ILogger]: Without dead ends: 50 [2019-05-23 11:15:22,911 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:15:22,911 INFO L146 ILogger]: Start minimizeSevpa. Operand 50 states. [2019-05-23 11:15:22,915 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-05-23 11:15:22,915 INFO L146 ILogger]: Start removeUnreachable. Operand 48 states. [2019-05-23 11:15:22,916 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-05-23 11:15:22,916 INFO L146 ILogger]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 40 [2019-05-23 11:15:22,916 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:22,916 INFO L146 ILogger]: Abstraction has 48 states and 49 transitions. [2019-05-23 11:15:22,916 INFO L146 ILogger]: Interpolant automaton has 12 states. [2019-05-23 11:15:22,917 INFO L146 ILogger]: Start isEmpty. Operand 48 states and 49 transitions. [2019-05-23 11:15:22,917 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 44 [2019-05-23 11:15:22,918 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:22,918 INFO L146 ILogger]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:22,918 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:22,918 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:22,919 INFO L146 ILogger]: Analyzing trace with hash -773007456, now seen corresponding path program 9 times [2019-05-23 11:15:22,919 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:22,919 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:22,920 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,920 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:22,920 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:22,953 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,111 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:23,111 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:23,111 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 11:15:23,120 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:23,257 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-05-23 11:15:23,257 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,258 INFO L146 ILogger]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2019-05-23 11:15:23,260 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:23,384 INFO L146 ILogger]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:23,412 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:23,412 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-05-23 11:15:23,412 INFO L146 ILogger]: Interpolant automaton has 13 states [2019-05-23 11:15:23,412 INFO L146 ILogger]: Constructing interpolant automaton starting with 13 interpolants. [2019-05-23 11:15:23,413 INFO L146 ILogger]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:15:23,413 INFO L146 ILogger]: Start difference. First operand 48 states and 49 transitions. Second operand 13 states. [2019-05-23 11:15:23,497 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:23,498 INFO L146 ILogger]: Finished difference Result 67 states and 69 transitions. [2019-05-23 11:15:23,498 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:15:23,498 INFO L146 ILogger]: Start accepts. Automaton has 13 states. Word has length 43 [2019-05-23 11:15:23,498 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:23,499 INFO L146 ILogger]: With dead ends: 67 [2019-05-23 11:15:23,499 INFO L146 ILogger]: Without dead ends: 53 [2019-05-23 11:15:23,500 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2019-05-23 11:15:23,501 INFO L146 ILogger]: Start minimizeSevpa. Operand 53 states. [2019-05-23 11:15:23,504 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 53 to 51. [2019-05-23 11:15:23,504 INFO L146 ILogger]: Start removeUnreachable. Operand 51 states. [2019-05-23 11:15:23,505 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2019-05-23 11:15:23,505 INFO L146 ILogger]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 43 [2019-05-23 11:15:23,505 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:23,505 INFO L146 ILogger]: Abstraction has 51 states and 52 transitions. [2019-05-23 11:15:23,506 INFO L146 ILogger]: Interpolant automaton has 13 states. [2019-05-23 11:15:23,506 INFO L146 ILogger]: Start isEmpty. Operand 51 states and 52 transitions. [2019-05-23 11:15:23,506 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:15:23,507 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:23,507 INFO L146 ILogger]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:23,507 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:23,507 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:23,507 INFO L146 ILogger]: Analyzing trace with hash 1346131928, now seen corresponding path program 10 times [2019-05-23 11:15:23,508 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:23,508 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:23,508 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,509 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:23,509 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,520 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,727 INFO L146 ILogger]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:23,727 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:23,727 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 11:15:23,737 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:23,760 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:23,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:23,761 INFO L146 ILogger]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:15:23,763 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:23,785 INFO L146 ILogger]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:23,806 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:23,806 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-05-23 11:15:23,806 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:15:23,807 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:15:23,807 INFO L146 ILogger]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:23,807 INFO L146 ILogger]: Start difference. First operand 51 states and 52 transitions. Second operand 14 states. [2019-05-23 11:15:23,905 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:23,905 INFO L146 ILogger]: Finished difference Result 70 states and 72 transitions. [2019-05-23 11:15:23,906 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:15:23,906 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 46 [2019-05-23 11:15:23,906 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:23,907 INFO L146 ILogger]: With dead ends: 70 [2019-05-23 11:15:23,907 INFO L146 ILogger]: Without dead ends: 56 [2019-05-23 11:15:23,908 INFO L146 ILogger]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:15:23,908 INFO L146 ILogger]: Start minimizeSevpa. Operand 56 states. [2019-05-23 11:15:23,911 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 56 to 54. [2019-05-23 11:15:23,911 INFO L146 ILogger]: Start removeUnreachable. Operand 54 states. [2019-05-23 11:15:23,911 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2019-05-23 11:15:23,912 INFO L146 ILogger]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 46 [2019-05-23 11:15:23,912 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:23,912 INFO L146 ILogger]: Abstraction has 54 states and 55 transitions. [2019-05-23 11:15:23,912 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:15:23,912 INFO L146 ILogger]: Start isEmpty. Operand 54 states and 55 transitions. [2019-05-23 11:15:23,913 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:15:23,913 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:23,913 INFO L146 ILogger]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:23,914 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:23,914 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:23,914 INFO L146 ILogger]: Analyzing trace with hash 903236768, now seen corresponding path program 11 times [2019-05-23 11:15:23,914 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:23,914 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:23,915 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,915 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:23,915 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:23,926 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:24,186 INFO L146 ILogger]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:24,186 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:24,186 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 11:15:24,198 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:24,238 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:15:24,239 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:24,239 INFO L146 ILogger]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:15:24,242 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:24,262 INFO L146 ILogger]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:24,280 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:24,280 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-05-23 11:15:24,281 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:15:24,281 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:15:24,281 INFO L146 ILogger]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:24,282 INFO L146 ILogger]: Start difference. First operand 54 states and 55 transitions. Second operand 15 states. [2019-05-23 11:15:24,365 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:24,366 INFO L146 ILogger]: Finished difference Result 73 states and 75 transitions. [2019-05-23 11:15:24,371 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-05-23 11:15:24,371 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 49 [2019-05-23 11:15:24,371 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:24,372 INFO L146 ILogger]: With dead ends: 73 [2019-05-23 11:15:24,372 INFO L146 ILogger]: Without dead ends: 59 [2019-05-23 11:15:24,373 INFO L146 ILogger]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:15:24,373 INFO L146 ILogger]: Start minimizeSevpa. Operand 59 states. [2019-05-23 11:15:24,379 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 59 to 57. [2019-05-23 11:15:24,379 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:15:24,380 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-05-23 11:15:24,382 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 49 [2019-05-23 11:15:24,382 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:24,382 INFO L146 ILogger]: Abstraction has 57 states and 58 transitions. [2019-05-23 11:15:24,382 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:15:24,383 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 58 transitions. [2019-05-23 11:15:24,383 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 53 [2019-05-23 11:15:24,383 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:24,384 INFO L146 ILogger]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:24,384 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:24,384 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:24,384 INFO L146 ILogger]: Analyzing trace with hash 753058520, now seen corresponding path program 12 times [2019-05-23 11:15:24,384 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:24,384 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:24,386 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:24,387 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:24,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:24,406 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:24,662 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:24,662 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:24,663 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:15:24,676 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:24,769 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:15:24,769 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:24,770 INFO L146 ILogger]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:15:24,772 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:24,812 INFO L146 ILogger]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:24,830 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:24,831 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-05-23 11:15:24,831 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:15:24,831 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:15:24,832 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:15:24,832 INFO L146 ILogger]: Start difference. First operand 57 states and 58 transitions. Second operand 16 states. [2019-05-23 11:15:25,001 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:25,001 INFO L146 ILogger]: Finished difference Result 76 states and 78 transitions. [2019-05-23 11:15:25,004 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-05-23 11:15:25,004 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 52 [2019-05-23 11:15:25,004 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:25,004 INFO L146 ILogger]: With dead ends: 76 [2019-05-23 11:15:25,005 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:15:25,005 INFO L146 ILogger]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:15:25,005 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:15:25,010 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 60. [2019-05-23 11:15:25,010 INFO L146 ILogger]: Start removeUnreachable. Operand 60 states. [2019-05-23 11:15:25,010 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2019-05-23 11:15:25,011 INFO L146 ILogger]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 52 [2019-05-23 11:15:25,012 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:25,012 INFO L146 ILogger]: Abstraction has 60 states and 61 transitions. [2019-05-23 11:15:25,012 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:15:25,012 INFO L146 ILogger]: Start isEmpty. Operand 60 states and 61 transitions. [2019-05-23 11:15:25,013 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 56 [2019-05-23 11:15:25,013 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:25,013 INFO L146 ILogger]: trace histogram [13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:25,014 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:25,017 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:25,017 INFO L146 ILogger]: Analyzing trace with hash -2146172512, now seen corresponding path program 13 times [2019-05-23 11:15:25,018 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:25,018 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:25,018 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,019 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:25,019 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,030 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:25,182 INFO L146 ILogger]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:25,183 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:25,183 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 11:15:25,191 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:25,204 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:25,205 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:15:25,207 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:25,226 INFO L146 ILogger]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:25,244 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:25,244 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-05-23 11:15:25,245 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:15:25,245 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:15:25,246 INFO L146 ILogger]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:15:25,246 INFO L146 ILogger]: Start difference. First operand 60 states and 61 transitions. Second operand 17 states. [2019-05-23 11:15:25,337 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:25,338 INFO L146 ILogger]: Finished difference Result 79 states and 81 transitions. [2019-05-23 11:15:25,344 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-05-23 11:15:25,344 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 55 [2019-05-23 11:15:25,344 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:25,345 INFO L146 ILogger]: With dead ends: 79 [2019-05-23 11:15:25,345 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:15:25,346 INFO L146 ILogger]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:15:25,346 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:15:25,355 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 63. [2019-05-23 11:15:25,355 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:15:25,356 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2019-05-23 11:15:25,356 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 55 [2019-05-23 11:15:25,356 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:25,356 INFO L146 ILogger]: Abstraction has 63 states and 64 transitions. [2019-05-23 11:15:25,356 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:15:25,357 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 64 transitions. [2019-05-23 11:15:25,357 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:15:25,358 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:25,366 INFO L146 ILogger]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:25,366 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:25,366 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:25,367 INFO L146 ILogger]: Analyzing trace with hash -1345524264, now seen corresponding path program 14 times [2019-05-23 11:15:25,367 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:25,367 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:25,367 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,368 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:25,368 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,382 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:25,614 INFO L146 ILogger]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:25,615 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:25,615 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 11:15:25,623 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:25,668 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:25,668 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:25,669 INFO L146 ILogger]: Trace formula consists of 90 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:15:25,679 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:25,705 INFO L146 ILogger]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:25,726 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:25,726 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-05-23 11:15:25,726 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:15:25,727 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:15:25,727 INFO L146 ILogger]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:15:25,727 INFO L146 ILogger]: Start difference. First operand 63 states and 64 transitions. Second operand 18 states. [2019-05-23 11:15:25,948 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:25,948 INFO L146 ILogger]: Finished difference Result 82 states and 84 transitions. [2019-05-23 11:15:25,948 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-05-23 11:15:25,948 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 58 [2019-05-23 11:15:25,949 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:25,949 INFO L146 ILogger]: With dead ends: 82 [2019-05-23 11:15:25,949 INFO L146 ILogger]: Without dead ends: 68 [2019-05-23 11:15:25,950 INFO L146 ILogger]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:15:25,950 INFO L146 ILogger]: Start minimizeSevpa. Operand 68 states. [2019-05-23 11:15:25,952 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 68 to 66. [2019-05-23 11:15:25,952 INFO L146 ILogger]: Start removeUnreachable. Operand 66 states. [2019-05-23 11:15:25,953 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2019-05-23 11:15:25,953 INFO L146 ILogger]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 58 [2019-05-23 11:15:25,953 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:25,953 INFO L146 ILogger]: Abstraction has 66 states and 67 transitions. [2019-05-23 11:15:25,953 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:15:25,954 INFO L146 ILogger]: Start isEmpty. Operand 66 states and 67 transitions. [2019-05-23 11:15:25,954 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 62 [2019-05-23 11:15:25,954 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:25,955 INFO L146 ILogger]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:25,955 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:25,955 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:25,955 INFO L146 ILogger]: Analyzing trace with hash 813037216, now seen corresponding path program 15 times [2019-05-23 11:15:25,955 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:25,955 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:25,956 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,956 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:25,956 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:25,966 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:26,633 INFO L146 ILogger]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:26,634 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:26,634 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 11:15:26,642 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:26,774 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2019-05-23 11:15:26,774 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:26,776 INFO L146 ILogger]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:15:26,777 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:26,846 INFO L146 ILogger]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:26,867 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:26,868 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-05-23 11:15:26,868 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:15:26,868 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:15:26,869 INFO L146 ILogger]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:15:26,869 INFO L146 ILogger]: Start difference. First operand 66 states and 67 transitions. Second operand 19 states. [2019-05-23 11:15:26,994 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:26,994 INFO L146 ILogger]: Finished difference Result 85 states and 87 transitions. [2019-05-23 11:15:26,995 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:15:26,995 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 61 [2019-05-23 11:15:26,995 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:26,996 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:15:26,996 INFO L146 ILogger]: Without dead ends: 71 [2019-05-23 11:15:26,997 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:15:26,997 INFO L146 ILogger]: Start minimizeSevpa. Operand 71 states. [2019-05-23 11:15:26,999 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 71 to 69. [2019-05-23 11:15:26,999 INFO L146 ILogger]: Start removeUnreachable. Operand 69 states. [2019-05-23 11:15:27,000 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2019-05-23 11:15:27,001 INFO L146 ILogger]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 61 [2019-05-23 11:15:27,001 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:27,001 INFO L146 ILogger]: Abstraction has 69 states and 70 transitions. [2019-05-23 11:15:27,001 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:15:27,001 INFO L146 ILogger]: Start isEmpty. Operand 69 states and 70 transitions. [2019-05-23 11:15:27,002 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:15:27,002 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:27,002 INFO L146 ILogger]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:27,003 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:27,003 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:27,003 INFO L146 ILogger]: Analyzing trace with hash -2027235112, now seen corresponding path program 16 times [2019-05-23 11:15:27,003 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:27,003 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:27,004 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:27,004 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:27,004 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:27,014 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:27,223 INFO L146 ILogger]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:27,224 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:27,224 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 11:15:27,235 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:27,266 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:27,266 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:27,267 INFO L146 ILogger]: Trace formula consists of 98 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:15:27,269 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:27,318 INFO L146 ILogger]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:27,339 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:27,339 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-05-23 11:15:27,339 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:15:27,340 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:15:27,340 INFO L146 ILogger]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:15:27,340 INFO L146 ILogger]: Start difference. First operand 69 states and 70 transitions. Second operand 20 states. [2019-05-23 11:15:27,445 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:27,445 INFO L146 ILogger]: Finished difference Result 88 states and 90 transitions. [2019-05-23 11:15:27,446 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:15:27,446 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 64 [2019-05-23 11:15:27,446 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:27,447 INFO L146 ILogger]: With dead ends: 88 [2019-05-23 11:15:27,447 INFO L146 ILogger]: Without dead ends: 74 [2019-05-23 11:15:27,448 INFO L146 ILogger]: 0 DeclaredPredicates, 82 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:15:27,448 INFO L146 ILogger]: Start minimizeSevpa. Operand 74 states. [2019-05-23 11:15:27,451 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 74 to 72. [2019-05-23 11:15:27,452 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:15:27,452 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2019-05-23 11:15:27,452 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 64 [2019-05-23 11:15:27,453 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:27,453 INFO L146 ILogger]: Abstraction has 72 states and 73 transitions. [2019-05-23 11:15:27,453 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:15:27,453 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 73 transitions. [2019-05-23 11:15:27,454 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 68 [2019-05-23 11:15:27,454 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:27,454 INFO L146 ILogger]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:27,454 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:27,455 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:27,455 INFO L146 ILogger]: Analyzing trace with hash -1429460064, now seen corresponding path program 17 times [2019-05-23 11:15:27,455 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:27,455 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:27,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:27,456 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:27,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:27,467 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:27,692 INFO L146 ILogger]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:27,693 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:27,693 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 11:15:27,701 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:27,819 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2019-05-23 11:15:27,819 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:27,821 INFO L146 ILogger]: Trace formula consists of 102 conjuncts, 19 conjunts are in the unsatisfiable core [2019-05-23 11:15:27,823 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:27,852 INFO L146 ILogger]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:27,881 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:27,881 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-05-23 11:15:27,882 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:15:27,882 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:15:27,882 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:15:27,883 INFO L146 ILogger]: Start difference. First operand 72 states and 73 transitions. Second operand 21 states. [2019-05-23 11:15:28,041 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:28,041 INFO L146 ILogger]: Finished difference Result 91 states and 93 transitions. [2019-05-23 11:15:28,041 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:15:28,042 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 67 [2019-05-23 11:15:28,042 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:28,043 INFO L146 ILogger]: With dead ends: 91 [2019-05-23 11:15:28,043 INFO L146 ILogger]: Without dead ends: 77 [2019-05-23 11:15:28,044 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:15:28,044 INFO L146 ILogger]: Start minimizeSevpa. Operand 77 states. [2019-05-23 11:15:28,047 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 77 to 75. [2019-05-23 11:15:28,047 INFO L146 ILogger]: Start removeUnreachable. Operand 75 states. [2019-05-23 11:15:28,048 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2019-05-23 11:15:28,048 INFO L146 ILogger]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 67 [2019-05-23 11:15:28,048 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:28,048 INFO L146 ILogger]: Abstraction has 75 states and 76 transitions. [2019-05-23 11:15:28,048 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:15:28,049 INFO L146 ILogger]: Start isEmpty. Operand 75 states and 76 transitions. [2019-05-23 11:15:28,049 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 71 [2019-05-23 11:15:28,049 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:28,050 INFO L146 ILogger]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:28,050 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:28,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:28,050 INFO L146 ILogger]: Analyzing trace with hash -47414312, now seen corresponding path program 18 times [2019-05-23 11:15:28,050 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:28,051 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:28,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:28,051 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:28,052 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:28,060 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:28,362 INFO L146 ILogger]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:28,362 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:28,362 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 11:15:28,371 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:28,672 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2019-05-23 11:15:28,672 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:28,674 INFO L146 ILogger]: Trace formula consists of 106 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:15:28,675 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:28,701 INFO L146 ILogger]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:28,726 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:28,727 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-05-23 11:15:28,727 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:15:28,727 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:15:28,728 INFO L146 ILogger]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:15:28,728 INFO L146 ILogger]: Start difference. First operand 75 states and 76 transitions. Second operand 22 states. [2019-05-23 11:15:28,860 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:28,860 INFO L146 ILogger]: Finished difference Result 94 states and 96 transitions. [2019-05-23 11:15:28,861 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:15:28,861 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 70 [2019-05-23 11:15:28,861 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:28,862 INFO L146 ILogger]: With dead ends: 94 [2019-05-23 11:15:28,862 INFO L146 ILogger]: Without dead ends: 80 [2019-05-23 11:15:28,862 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:15:28,863 INFO L146 ILogger]: Start minimizeSevpa. Operand 80 states. [2019-05-23 11:15:28,864 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 80 to 78. [2019-05-23 11:15:28,865 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:15:28,865 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2019-05-23 11:15:28,865 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 70 [2019-05-23 11:15:28,866 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:28,866 INFO L146 ILogger]: Abstraction has 78 states and 79 transitions. [2019-05-23 11:15:28,866 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:15:28,866 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 79 transitions. [2019-05-23 11:15:28,867 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 74 [2019-05-23 11:15:28,867 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:28,867 INFO L146 ILogger]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:28,867 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:28,867 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:28,867 INFO L146 ILogger]: Analyzing trace with hash 921084064, now seen corresponding path program 19 times [2019-05-23 11:15:28,868 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:28,868 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:28,868 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:28,868 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:28,869 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:28,877 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:29,186 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:29,186 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:29,186 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 11:15:29,196 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:29,215 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:29,216 INFO L146 ILogger]: Trace formula consists of 110 conjuncts, 21 conjunts are in the unsatisfiable core [2019-05-23 11:15:29,218 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:29,234 INFO L146 ILogger]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:29,268 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:29,268 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-05-23 11:15:29,268 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:15:29,269 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:15:29,269 INFO L146 ILogger]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:15:29,269 INFO L146 ILogger]: Start difference. First operand 78 states and 79 transitions. Second operand 23 states. [2019-05-23 11:15:29,461 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:29,461 INFO L146 ILogger]: Finished difference Result 97 states and 99 transitions. [2019-05-23 11:15:29,462 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:15:29,462 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 73 [2019-05-23 11:15:29,462 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:29,463 INFO L146 ILogger]: With dead ends: 97 [2019-05-23 11:15:29,463 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:15:29,464 INFO L146 ILogger]: 0 DeclaredPredicates, 94 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:15:29,464 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:15:29,466 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 81. [2019-05-23 11:15:29,467 INFO L146 ILogger]: Start removeUnreachable. Operand 81 states. [2019-05-23 11:15:29,467 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2019-05-23 11:15:29,467 INFO L146 ILogger]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 73 [2019-05-23 11:15:29,468 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:29,468 INFO L146 ILogger]: Abstraction has 81 states and 82 transitions. [2019-05-23 11:15:29,468 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:15:29,468 INFO L146 ILogger]: Start isEmpty. Operand 81 states and 82 transitions. [2019-05-23 11:15:29,469 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 77 [2019-05-23 11:15:29,469 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:29,469 INFO L146 ILogger]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:29,469 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:29,469 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:29,469 INFO L146 ILogger]: Analyzing trace with hash -134091048, now seen corresponding path program 20 times [2019-05-23 11:15:29,469 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:29,470 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:29,470 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:29,470 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:29,470 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:29,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:29,819 INFO L146 ILogger]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:29,820 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:29,820 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 11:15:29,829 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:29,850 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:29,850 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:29,851 INFO L146 ILogger]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2019-05-23 11:15:29,852 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:29,872 INFO L146 ILogger]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:29,904 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:29,904 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-05-23 11:15:29,905 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:15:29,905 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:15:29,905 INFO L146 ILogger]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:29,906 INFO L146 ILogger]: Start difference. First operand 81 states and 82 transitions. Second operand 24 states. [2019-05-23 11:15:30,095 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:30,095 INFO L146 ILogger]: Finished difference Result 100 states and 102 transitions. [2019-05-23 11:15:30,100 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-05-23 11:15:30,100 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 76 [2019-05-23 11:15:30,100 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:30,101 INFO L146 ILogger]: With dead ends: 100 [2019-05-23 11:15:30,101 INFO L146 ILogger]: Without dead ends: 86 [2019-05-23 11:15:30,102 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:15:30,102 INFO L146 ILogger]: Start minimizeSevpa. Operand 86 states. [2019-05-23 11:15:30,104 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 86 to 84. [2019-05-23 11:15:30,105 INFO L146 ILogger]: Start removeUnreachable. Operand 84 states. [2019-05-23 11:15:30,105 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2019-05-23 11:15:30,105 INFO L146 ILogger]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 76 [2019-05-23 11:15:30,106 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:30,106 INFO L146 ILogger]: Abstraction has 84 states and 85 transitions. [2019-05-23 11:15:30,106 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:15:30,106 INFO L146 ILogger]: Start isEmpty. Operand 84 states and 85 transitions. [2019-05-23 11:15:30,107 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 80 [2019-05-23 11:15:30,107 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:30,107 INFO L146 ILogger]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:30,107 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:30,108 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:30,108 INFO L146 ILogger]: Analyzing trace with hash 9786784, now seen corresponding path program 21 times [2019-05-23 11:15:30,108 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:30,108 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:30,109 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,109 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:30,109 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:30,126 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,484 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:30,485 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:30,485 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 11:15:30,494 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:30,929 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2019-05-23 11:15:30,929 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:30,931 INFO L146 ILogger]: Trace formula consists of 118 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:15:30,932 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:30,960 INFO L146 ILogger]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:30,990 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:30,990 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-05-23 11:15:30,991 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:15:30,991 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:15:30,991 INFO L146 ILogger]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:15:30,992 INFO L146 ILogger]: Start difference. First operand 84 states and 85 transitions. Second operand 25 states. [2019-05-23 11:15:31,214 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,214 INFO L146 ILogger]: Finished difference Result 103 states and 105 transitions. [2019-05-23 11:15:31,215 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:15:31,215 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 79 [2019-05-23 11:15:31,215 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,216 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:15:31,216 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:15:31,217 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:15:31,218 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:15:31,220 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 87. [2019-05-23 11:15:31,220 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:15:31,221 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2019-05-23 11:15:31,221 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 79 [2019-05-23 11:15:31,221 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,221 INFO L146 ILogger]: Abstraction has 87 states and 88 transitions. [2019-05-23 11:15:31,221 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:15:31,221 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 88 transitions. [2019-05-23 11:15:31,222 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:15:31,222 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,222 INFO L146 ILogger]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:31,222 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,223 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,223 INFO L146 ILogger]: Analyzing trace with hash -103081512, now seen corresponding path program 22 times [2019-05-23 11:15:31,223 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,223 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,224 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,224 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:31,224 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,233 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,553 INFO L146 ILogger]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:31,553 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:31,554 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:31,563 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:31,583 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:31,584 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:31,585 INFO L146 ILogger]: Trace formula consists of 122 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:15:31,586 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:31,619 INFO L146 ILogger]: Checked inductivity of 715 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:31,650 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:31,650 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-05-23 11:15:31,650 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:15:31,651 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:15:31,651 INFO L146 ILogger]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:15:31,651 INFO L146 ILogger]: Start difference. First operand 87 states and 88 transitions. Second operand 26 states. [2019-05-23 11:15:31,791 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:31,792 INFO L146 ILogger]: Finished difference Result 106 states and 108 transitions. [2019-05-23 11:15:31,792 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:15:31,792 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 82 [2019-05-23 11:15:31,793 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:31,794 INFO L146 ILogger]: With dead ends: 106 [2019-05-23 11:15:31,794 INFO L146 ILogger]: Without dead ends: 92 [2019-05-23 11:15:31,795 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:15:31,795 INFO L146 ILogger]: Start minimizeSevpa. Operand 92 states. [2019-05-23 11:15:31,797 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 92 to 90. [2019-05-23 11:15:31,798 INFO L146 ILogger]: Start removeUnreachable. Operand 90 states. [2019-05-23 11:15:31,798 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2019-05-23 11:15:31,798 INFO L146 ILogger]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 82 [2019-05-23 11:15:31,799 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:31,799 INFO L146 ILogger]: Abstraction has 90 states and 91 transitions. [2019-05-23 11:15:31,799 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:15:31,799 INFO L146 ILogger]: Start isEmpty. Operand 90 states and 91 transitions. [2019-05-23 11:15:31,800 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:15:31,800 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:31,800 INFO L146 ILogger]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:31,800 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:31,800 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:31,800 INFO L146 ILogger]: Analyzing trace with hash 396905120, now seen corresponding path program 23 times [2019-05-23 11:15:31,801 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:31,801 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:31,801 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,801 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:31,802 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:31,811 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,137 INFO L146 ILogger]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:32,137 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:32,137 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:32,147 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:32,426 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2019-05-23 11:15:32,427 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:32,429 INFO L146 ILogger]: Trace formula consists of 126 conjuncts, 25 conjunts are in the unsatisfiable core [2019-05-23 11:15:32,430 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:32,534 INFO L146 ILogger]: Checked inductivity of 782 backedges. 0 proven. 782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:32,558 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:32,559 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-05-23 11:15:32,559 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:15:32,559 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:15:32,559 INFO L146 ILogger]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:15:32,560 INFO L146 ILogger]: Start difference. First operand 90 states and 91 transitions. Second operand 27 states. [2019-05-23 11:15:32,696 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:32,696 INFO L146 ILogger]: Finished difference Result 109 states and 111 transitions. [2019-05-23 11:15:32,696 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:15:32,697 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 85 [2019-05-23 11:15:32,697 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:32,698 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:15:32,698 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:15:32,698 INFO L146 ILogger]: 0 DeclaredPredicates, 110 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:15:32,699 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:15:32,700 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 93. [2019-05-23 11:15:32,701 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:15:32,701 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2019-05-23 11:15:32,701 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 85 [2019-05-23 11:15:32,701 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:32,702 INFO L146 ILogger]: Abstraction has 93 states and 94 transitions. [2019-05-23 11:15:32,702 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:15:32,702 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 94 transitions. [2019-05-23 11:15:32,702 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 89 [2019-05-23 11:15:32,703 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:32,703 INFO L146 ILogger]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:32,703 INFO L146 ILogger]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:32,703 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:32,703 INFO L146 ILogger]: Analyzing trace with hash 552076504, now seen corresponding path program 24 times [2019-05-23 11:15:32,703 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:32,704 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:32,704 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,704 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:32,705 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:32,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:33,501 INFO L146 ILogger]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:33,502 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:33,502 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:33,510 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:34,869 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2019-05-23 11:15:34,869 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:34,874 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:15:34,875 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:34,894 INFO L146 ILogger]: Checked inductivity of 852 backedges. 0 proven. 852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:34,917 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:34,917 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2019-05-23 11:15:34,918 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:15:34,918 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:15:34,918 INFO L146 ILogger]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:34,918 INFO L146 ILogger]: Start difference. First operand 93 states and 94 transitions. Second operand 28 states. [2019-05-23 11:15:35,171 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:35,171 INFO L146 ILogger]: Finished difference Result 112 states and 114 transitions. [2019-05-23 11:15:35,171 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:15:35,172 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 88 [2019-05-23 11:15:35,172 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:35,173 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:15:35,173 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:15:35,174 INFO L146 ILogger]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:15:35,174 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:15:35,176 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 96. [2019-05-23 11:15:35,176 INFO L146 ILogger]: Start removeUnreachable. Operand 96 states. [2019-05-23 11:15:35,177 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2019-05-23 11:15:35,177 INFO L146 ILogger]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 88 [2019-05-23 11:15:35,177 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:35,177 INFO L146 ILogger]: Abstraction has 96 states and 97 transitions. [2019-05-23 11:15:35,177 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:15:35,177 INFO L146 ILogger]: Start isEmpty. Operand 96 states and 97 transitions. [2019-05-23 11:15:35,178 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:15:35,178 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:35,178 INFO L146 ILogger]: trace histogram [25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:35,178 INFO L146 ILogger]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:35,179 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:35,179 INFO L146 ILogger]: Analyzing trace with hash 1877966752, now seen corresponding path program 25 times [2019-05-23 11:15:35,179 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:35,179 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:35,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,180 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:35,180 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:35,190 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:35,973 INFO L146 ILogger]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:35,974 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:35,974 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:35,982 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:36,007 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:36,008 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2019-05-23 11:15:36,009 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:36,027 INFO L146 ILogger]: Checked inductivity of 925 backedges. 0 proven. 925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:36,045 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:36,046 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-05-23 11:15:36,046 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:15:36,046 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:15:36,047 INFO L146 ILogger]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:36,047 INFO L146 ILogger]: Start difference. First operand 96 states and 97 transitions. Second operand 29 states. [2019-05-23 11:15:36,187 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:36,187 INFO L146 ILogger]: Finished difference Result 115 states and 117 transitions. [2019-05-23 11:15:36,188 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:15:36,188 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 91 [2019-05-23 11:15:36,188 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:36,189 INFO L146 ILogger]: With dead ends: 115 [2019-05-23 11:15:36,189 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:15:36,190 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:15:36,190 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:15:36,192 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 99. [2019-05-23 11:15:36,193 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:15:36,193 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2019-05-23 11:15:36,193 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 91 [2019-05-23 11:15:36,193 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:36,193 INFO L146 ILogger]: Abstraction has 99 states and 100 transitions. [2019-05-23 11:15:36,194 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:15:36,194 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 100 transitions. [2019-05-23 11:15:36,194 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 95 [2019-05-23 11:15:36,194 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:36,194 INFO L146 ILogger]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:36,195 INFO L146 ILogger]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:36,195 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:36,195 INFO L146 ILogger]: Analyzing trace with hash 660123608, now seen corresponding path program 26 times [2019-05-23 11:15:36,195 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:36,195 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:36,196 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,196 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:36,196 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:36,219 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,179 INFO L146 ILogger]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:37,180 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:37,180 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:37,189 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:37,210 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:37,210 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,212 INFO L146 ILogger]: Trace formula consists of 138 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:15:37,213 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:37,237 INFO L146 ILogger]: Checked inductivity of 1001 backedges. 0 proven. 1001 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:37,256 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:37,256 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-05-23 11:15:37,256 INFO L146 ILogger]: Interpolant automaton has 30 states [2019-05-23 11:15:37,257 INFO L146 ILogger]: Constructing interpolant automaton starting with 30 interpolants. [2019-05-23 11:15:37,257 INFO L146 ILogger]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:15:37,257 INFO L146 ILogger]: Start difference. First operand 99 states and 100 transitions. Second operand 30 states. [2019-05-23 11:15:37,409 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:37,410 INFO L146 ILogger]: Finished difference Result 118 states and 120 transitions. [2019-05-23 11:15:37,410 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:15:37,410 INFO L146 ILogger]: Start accepts. Automaton has 30 states. Word has length 94 [2019-05-23 11:15:37,411 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:37,412 INFO L146 ILogger]: With dead ends: 118 [2019-05-23 11:15:37,412 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:15:37,413 INFO L146 ILogger]: 0 DeclaredPredicates, 122 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:15:37,413 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:15:37,416 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 102. [2019-05-23 11:15:37,416 INFO L146 ILogger]: Start removeUnreachable. Operand 102 states. [2019-05-23 11:15:37,417 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2019-05-23 11:15:37,417 INFO L146 ILogger]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 94 [2019-05-23 11:15:37,417 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:37,417 INFO L146 ILogger]: Abstraction has 102 states and 103 transitions. [2019-05-23 11:15:37,417 INFO L146 ILogger]: Interpolant automaton has 30 states. [2019-05-23 11:15:37,418 INFO L146 ILogger]: Start isEmpty. Operand 102 states and 103 transitions. [2019-05-23 11:15:37,418 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:15:37,418 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:37,418 INFO L146 ILogger]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:37,419 INFO L146 ILogger]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:37,419 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:37,419 INFO L146 ILogger]: Analyzing trace with hash -516229984, now seen corresponding path program 27 times [2019-05-23 11:15:37,419 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:37,419 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:37,420 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,420 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:37,420 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:37,430 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:37,818 INFO L146 ILogger]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:37,819 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:37,819 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:37,833 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:39,511 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2019-05-23 11:15:39,512 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:39,516 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 29 conjunts are in the unsatisfiable core [2019-05-23 11:15:39,518 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:39,554 INFO L146 ILogger]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:39,574 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:39,574 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-05-23 11:15:39,574 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:15:39,574 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:15:39,575 INFO L146 ILogger]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:15:39,575 INFO L146 ILogger]: Start difference. First operand 102 states and 103 transitions. Second operand 31 states. [2019-05-23 11:15:39,719 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:39,719 INFO L146 ILogger]: Finished difference Result 121 states and 123 transitions. [2019-05-23 11:15:39,719 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:15:39,720 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 97 [2019-05-23 11:15:39,720 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:39,721 INFO L146 ILogger]: With dead ends: 121 [2019-05-23 11:15:39,721 INFO L146 ILogger]: Without dead ends: 107 [2019-05-23 11:15:39,721 INFO L146 ILogger]: 0 DeclaredPredicates, 126 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:15:39,722 INFO L146 ILogger]: Start minimizeSevpa. Operand 107 states. [2019-05-23 11:15:39,724 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 107 to 105. [2019-05-23 11:15:39,725 INFO L146 ILogger]: Start removeUnreachable. Operand 105 states. [2019-05-23 11:15:39,725 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2019-05-23 11:15:39,725 INFO L146 ILogger]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 97 [2019-05-23 11:15:39,726 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:39,726 INFO L146 ILogger]: Abstraction has 105 states and 106 transitions. [2019-05-23 11:15:39,726 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:15:39,726 INFO L146 ILogger]: Start isEmpty. Operand 105 states and 106 transitions. [2019-05-23 11:15:39,726 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 101 [2019-05-23 11:15:39,727 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:39,727 INFO L146 ILogger]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:39,727 INFO L146 ILogger]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:39,727 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:39,727 INFO L146 ILogger]: Analyzing trace with hash 1667046104, now seen corresponding path program 28 times [2019-05-23 11:15:39,727 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:39,728 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:39,728 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,728 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:39,729 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:39,739 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,147 INFO L146 ILogger]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:40,147 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:40,147 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:40,159 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:40,182 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:40,183 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:40,184 INFO L146 ILogger]: Trace formula consists of 146 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:15:40,185 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:40,207 INFO L146 ILogger]: Checked inductivity of 1162 backedges. 0 proven. 1162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:40,235 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:40,235 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2019-05-23 11:15:40,236 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:15:40,236 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:15:40,237 INFO L146 ILogger]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:15:40,237 INFO L146 ILogger]: Start difference. First operand 105 states and 106 transitions. Second operand 32 states. [2019-05-23 11:15:40,476 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:40,476 INFO L146 ILogger]: Finished difference Result 124 states and 126 transitions. [2019-05-23 11:15:40,476 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:15:40,476 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 100 [2019-05-23 11:15:40,477 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:40,477 INFO L146 ILogger]: With dead ends: 124 [2019-05-23 11:15:40,478 INFO L146 ILogger]: Without dead ends: 110 [2019-05-23 11:15:40,480 INFO L146 ILogger]: 0 DeclaredPredicates, 130 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:15:40,480 INFO L146 ILogger]: Start minimizeSevpa. Operand 110 states. [2019-05-23 11:15:40,482 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 110 to 108. [2019-05-23 11:15:40,483 INFO L146 ILogger]: Start removeUnreachable. Operand 108 states. [2019-05-23 11:15:40,483 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2019-05-23 11:15:40,483 INFO L146 ILogger]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 100 [2019-05-23 11:15:40,484 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:40,484 INFO L146 ILogger]: Abstraction has 108 states and 109 transitions. [2019-05-23 11:15:40,484 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:15:40,484 INFO L146 ILogger]: Start isEmpty. Operand 108 states and 109 transitions. [2019-05-23 11:15:40,484 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:15:40,485 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:40,485 INFO L146 ILogger]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:40,485 INFO L146 ILogger]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:40,485 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:40,485 INFO L146 ILogger]: Analyzing trace with hash 660253088, now seen corresponding path program 29 times [2019-05-23 11:15:40,485 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:40,486 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:40,486 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,486 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:40,487 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:40,499 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,067 INFO L146 ILogger]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:41,067 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:41,067 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:41,077 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:15:41,547 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2019-05-23 11:15:41,547 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:41,550 INFO L146 ILogger]: Trace formula consists of 150 conjuncts, 31 conjunts are in the unsatisfiable core [2019-05-23 11:15:41,551 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:41,601 INFO L146 ILogger]: Checked inductivity of 1247 backedges. 0 proven. 1247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:41,624 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:41,624 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-05-23 11:15:41,624 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:15:41,625 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:15:41,625 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:15:41,625 INFO L146 ILogger]: Start difference. First operand 108 states and 109 transitions. Second operand 33 states. [2019-05-23 11:15:41,786 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:41,787 INFO L146 ILogger]: Finished difference Result 127 states and 129 transitions. [2019-05-23 11:15:41,787 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:15:41,787 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 103 [2019-05-23 11:15:41,788 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:41,788 INFO L146 ILogger]: With dead ends: 127 [2019-05-23 11:15:41,788 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:15:41,789 INFO L146 ILogger]: 0 DeclaredPredicates, 134 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:15:41,790 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:15:41,792 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 111. [2019-05-23 11:15:41,792 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:15:41,793 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2019-05-23 11:15:41,793 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 103 [2019-05-23 11:15:41,793 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:41,793 INFO L146 ILogger]: Abstraction has 111 states and 112 transitions. [2019-05-23 11:15:41,793 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:15:41,794 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 112 transitions. [2019-05-23 11:15:41,794 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:15:41,794 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:41,794 INFO L146 ILogger]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:41,795 INFO L146 ILogger]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:41,795 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:41,795 INFO L146 ILogger]: Analyzing trace with hash -953858600, now seen corresponding path program 30 times [2019-05-23 11:15:41,795 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:41,795 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:41,797 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,797 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:41,797 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:41,809 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:42,295 INFO L146 ILogger]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:42,295 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:42,295 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:42,304 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:15:46,922 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2019-05-23 11:15:46,923 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:46,933 INFO L146 ILogger]: Trace formula consists of 154 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:15:46,934 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:46,954 INFO L146 ILogger]: Checked inductivity of 1335 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:46,976 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:46,976 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-05-23 11:15:46,977 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:15:46,977 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:15:46,977 INFO L146 ILogger]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:15:46,978 INFO L146 ILogger]: Start difference. First operand 111 states and 112 transitions. Second operand 34 states. [2019-05-23 11:15:47,117 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:47,118 INFO L146 ILogger]: Finished difference Result 130 states and 132 transitions. [2019-05-23 11:15:47,118 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:15:47,118 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 106 [2019-05-23 11:15:47,119 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:47,120 INFO L146 ILogger]: With dead ends: 130 [2019-05-23 11:15:47,120 INFO L146 ILogger]: Without dead ends: 116 [2019-05-23 11:15:47,121 INFO L146 ILogger]: 0 DeclaredPredicates, 138 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:15:47,122 INFO L146 ILogger]: Start minimizeSevpa. Operand 116 states. [2019-05-23 11:15:47,124 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 116 to 114. [2019-05-23 11:15:47,124 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:15:47,125 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 115 transitions. [2019-05-23 11:15:47,125 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 115 transitions. Word has length 106 [2019-05-23 11:15:47,125 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:47,125 INFO L146 ILogger]: Abstraction has 114 states and 115 transitions. [2019-05-23 11:15:47,126 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:15:47,126 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 115 transitions. [2019-05-23 11:15:47,126 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:15:47,126 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:47,126 INFO L146 ILogger]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:47,127 INFO L146 ILogger]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:47,127 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:47,127 INFO L146 ILogger]: Analyzing trace with hash -501309792, now seen corresponding path program 31 times [2019-05-23 11:15:47,127 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:47,127 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:47,128 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:47,128 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:47,128 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:47,139 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:47,622 INFO L146 ILogger]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:47,622 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:47,622 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:47,630 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:47,652 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:47,654 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 33 conjunts are in the unsatisfiable core [2019-05-23 11:15:47,655 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:47,685 INFO L146 ILogger]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:47,703 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:47,704 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-05-23 11:15:47,704 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:15:47,704 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:15:47,705 INFO L146 ILogger]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:15:47,705 INFO L146 ILogger]: Start difference. First operand 114 states and 115 transitions. Second operand 35 states. [2019-05-23 11:15:47,878 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:47,878 INFO L146 ILogger]: Finished difference Result 133 states and 135 transitions. [2019-05-23 11:15:47,878 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:15:47,878 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 109 [2019-05-23 11:15:47,879 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:47,879 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:15:47,880 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:15:47,880 INFO L146 ILogger]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:15:47,881 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:15:47,883 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 117. [2019-05-23 11:15:47,883 INFO L146 ILogger]: Start removeUnreachable. Operand 117 states. [2019-05-23 11:15:47,884 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2019-05-23 11:15:47,884 INFO L146 ILogger]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 109 [2019-05-23 11:15:47,884 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:47,884 INFO L146 ILogger]: Abstraction has 117 states and 118 transitions. [2019-05-23 11:15:47,884 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:15:47,885 INFO L146 ILogger]: Start isEmpty. Operand 117 states and 118 transitions. [2019-05-23 11:15:47,885 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:15:47,885 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:47,885 INFO L146 ILogger]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:47,886 INFO L146 ILogger]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:47,886 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:47,886 INFO L146 ILogger]: Analyzing trace with hash -522112808, now seen corresponding path program 32 times [2019-05-23 11:15:47,886 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:47,886 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:47,887 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:47,887 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:15:47,887 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:47,898 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:48,449 INFO L146 ILogger]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:48,449 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:48,449 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:48,457 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:15:48,493 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:15:48,494 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:48,495 INFO L146 ILogger]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:15:48,496 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:48,519 INFO L146 ILogger]: Checked inductivity of 1520 backedges. 0 proven. 1520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:48,542 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:48,542 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2019-05-23 11:15:48,542 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:15:48,543 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:15:48,543 INFO L146 ILogger]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:15:48,543 INFO L146 ILogger]: Start difference. First operand 117 states and 118 transitions. Second operand 36 states. [2019-05-23 11:15:48,708 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:48,708 INFO L146 ILogger]: Finished difference Result 136 states and 138 transitions. [2019-05-23 11:15:48,709 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:15:48,709 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 112 [2019-05-23 11:15:48,709 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:48,710 INFO L146 ILogger]: With dead ends: 136 [2019-05-23 11:15:48,710 INFO L146 ILogger]: Without dead ends: 122 [2019-05-23 11:15:48,711 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:15:48,711 INFO L146 ILogger]: Start minimizeSevpa. Operand 122 states. [2019-05-23 11:15:48,713 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 122 to 120. [2019-05-23 11:15:48,713 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:15:48,714 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2019-05-23 11:15:48,714 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 112 [2019-05-23 11:15:48,714 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:48,714 INFO L146 ILogger]: Abstraction has 120 states and 121 transitions. [2019-05-23 11:15:48,714 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:15:48,715 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 121 transitions. [2019-05-23 11:15:48,715 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:15:48,715 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:48,715 INFO L146 ILogger]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:48,716 INFO L146 ILogger]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:48,716 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:48,716 INFO L146 ILogger]: Analyzing trace with hash -1789471840, now seen corresponding path program 33 times [2019-05-23 11:15:48,716 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:48,716 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:48,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,717 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:48,717 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:48,728 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:49,543 INFO L146 ILogger]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:49,544 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:49,544 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:49,553 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:15:58,126 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2019-05-23 11:15:58,126 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:58,137 INFO L146 ILogger]: Trace formula consists of 166 conjuncts, 35 conjunts are in the unsatisfiable core [2019-05-23 11:15:58,138 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:58,164 INFO L146 ILogger]: Checked inductivity of 1617 backedges. 0 proven. 1617 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:58,186 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:58,186 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-05-23 11:15:58,187 INFO L146 ILogger]: Interpolant automaton has 37 states [2019-05-23 11:15:58,187 INFO L146 ILogger]: Constructing interpolant automaton starting with 37 interpolants. [2019-05-23 11:15:58,187 INFO L146 ILogger]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:15:58,187 INFO L146 ILogger]: Start difference. First operand 120 states and 121 transitions. Second operand 37 states. [2019-05-23 11:15:58,438 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:58,439 INFO L146 ILogger]: Finished difference Result 139 states and 141 transitions. [2019-05-23 11:15:58,439 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:15:58,439 INFO L146 ILogger]: Start accepts. Automaton has 37 states. Word has length 115 [2019-05-23 11:15:58,440 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:58,440 INFO L146 ILogger]: With dead ends: 139 [2019-05-23 11:15:58,440 INFO L146 ILogger]: Without dead ends: 125 [2019-05-23 11:15:58,441 INFO L146 ILogger]: 0 DeclaredPredicates, 150 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:15:58,441 INFO L146 ILogger]: Start minimizeSevpa. Operand 125 states. [2019-05-23 11:15:58,443 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 125 to 123. [2019-05-23 11:15:58,443 INFO L146 ILogger]: Start removeUnreachable. Operand 123 states. [2019-05-23 11:15:58,444 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2019-05-23 11:15:58,444 INFO L146 ILogger]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 115 [2019-05-23 11:15:58,444 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:58,445 INFO L146 ILogger]: Abstraction has 123 states and 124 transitions. [2019-05-23 11:15:58,445 INFO L146 ILogger]: Interpolant automaton has 37 states. [2019-05-23 11:15:58,445 INFO L146 ILogger]: Start isEmpty. Operand 123 states and 124 transitions. [2019-05-23 11:15:58,445 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:15:58,445 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:58,446 INFO L146 ILogger]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:58,446 INFO L146 ILogger]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:58,446 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:58,446 INFO L146 ILogger]: Analyzing trace with hash -624895016, now seen corresponding path program 34 times [2019-05-23 11:15:58,446 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:58,446 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:58,447 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:58,447 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:58,447 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:58,460 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:59,142 INFO L146 ILogger]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:59,143 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:15:59,143 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:15:59,151 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:15:59,178 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:15:59,179 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:15:59,180 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:15:59,181 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:15:59,214 INFO L146 ILogger]: Checked inductivity of 1717 backedges. 0 proven. 1717 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:15:59,233 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:15:59,234 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2019-05-23 11:15:59,234 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:15:59,234 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:15:59,235 INFO L146 ILogger]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:15:59,235 INFO L146 ILogger]: Start difference. First operand 123 states and 124 transitions. Second operand 38 states. [2019-05-23 11:15:59,435 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:15:59,435 INFO L146 ILogger]: Finished difference Result 142 states and 144 transitions. [2019-05-23 11:15:59,436 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:15:59,436 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 118 [2019-05-23 11:15:59,436 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:15:59,437 INFO L146 ILogger]: With dead ends: 142 [2019-05-23 11:15:59,437 INFO L146 ILogger]: Without dead ends: 128 [2019-05-23 11:15:59,438 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:15:59,439 INFO L146 ILogger]: Start minimizeSevpa. Operand 128 states. [2019-05-23 11:15:59,441 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 128 to 126. [2019-05-23 11:15:59,442 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:15:59,442 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 127 transitions. [2019-05-23 11:15:59,442 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 127 transitions. Word has length 118 [2019-05-23 11:15:59,442 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:15:59,443 INFO L146 ILogger]: Abstraction has 126 states and 127 transitions. [2019-05-23 11:15:59,443 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:15:59,443 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 127 transitions. [2019-05-23 11:15:59,443 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 122 [2019-05-23 11:15:59,443 INFO L146 ILogger]: Found error trace [2019-05-23 11:15:59,443 INFO L146 ILogger]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:15:59,443 INFO L146 ILogger]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:15:59,444 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:15:59,444 INFO L146 ILogger]: Analyzing trace with hash -1462548320, now seen corresponding path program 35 times [2019-05-23 11:15:59,444 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:15:59,444 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:15:59,445 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:59,445 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:15:59,445 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:15:59,457 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:00,407 INFO L146 ILogger]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:00,407 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:00,407 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:00,416 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:16:01,422 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2019-05-23 11:16:01,423 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:01,426 INFO L146 ILogger]: Trace formula consists of 174 conjuncts, 37 conjunts are in the unsatisfiable core [2019-05-23 11:16:01,428 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:16:01,551 INFO L146 ILogger]: Checked inductivity of 1820 backedges. 0 proven. 1820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:01,585 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:16:01,585 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-05-23 11:16:01,586 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:16:01,586 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:16:01,587 INFO L146 ILogger]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:16:01,587 INFO L146 ILogger]: Start difference. First operand 126 states and 127 transitions. Second operand 39 states. [2019-05-23 11:16:03,242 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:16:03,243 INFO L146 ILogger]: Finished difference Result 145 states and 147 transitions. [2019-05-23 11:16:03,243 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:16:03,243 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 121 [2019-05-23 11:16:03,244 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:16:03,245 INFO L146 ILogger]: With dead ends: 145 [2019-05-23 11:16:03,245 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:16:03,246 INFO L146 ILogger]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:16:03,246 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:16:03,248 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 129. [2019-05-23 11:16:03,248 INFO L146 ILogger]: Start removeUnreachable. Operand 129 states. [2019-05-23 11:16:03,249 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2019-05-23 11:16:03,249 INFO L146 ILogger]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 121 [2019-05-23 11:16:03,249 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:16:03,249 INFO L146 ILogger]: Abstraction has 129 states and 130 transitions. [2019-05-23 11:16:03,250 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:16:03,250 INFO L146 ILogger]: Start isEmpty. Operand 129 states and 130 transitions. [2019-05-23 11:16:03,250 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 125 [2019-05-23 11:16:03,250 INFO L146 ILogger]: Found error trace [2019-05-23 11:16:03,251 INFO L146 ILogger]: trace histogram [36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:16:03,251 INFO L146 ILogger]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:16:03,251 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:16:03,251 INFO L146 ILogger]: Analyzing trace with hash 2062829272, now seen corresponding path program 36 times [2019-05-23 11:16:03,251 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:16:03,251 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:16:03,252 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:03,252 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:16:03,252 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:16:03,264 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:16:04,231 INFO L146 ILogger]: Checked inductivity of 1926 backedges. 0 proven. 1926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:16:04,232 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:16:04,232 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:16:04,240 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE