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_copyInitSum2_true-unreach-call_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:17:45,797 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:17:45,800 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:17:45,817 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:17:45,819 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:17:45,820 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:17:45,822 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:17:45,824 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:17:45,827 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:17:45,828 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:17:45,829 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:17:45,829 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:17:45,830 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:17:45,831 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:17:45,832 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:17:45,833 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:17:45,834 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:17:45,840 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:17:45,844 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:17:45,846 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:17:45,852 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:17:45,853 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:17:45,856 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:17:45,856 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:17:45,856 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:17:45,857 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:17:45,857 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:17:45,862 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:17:45,862 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:17:45,863 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:17:45,867 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:17:45,867 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:17:45,869 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:17:45,869 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:17:45,870 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:17:45,870 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:17:45,870 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:17:45,871 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:17:45,872 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:17:45,872 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:17:45,899 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:17:45,899 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:17:45,900 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:17:45,900 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:17:45,900 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:17:45,901 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:17:45,901 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:17:45,901 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:17:45,901 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:17:45,901 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:17:45,902 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:17:45,902 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:17:45,902 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:17:45,902 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:17:45,902 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:17:45,903 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:17:45,903 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:17:45,903 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:17:45,903 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:17:45,903 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:17:45,904 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:17:45,904 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:17:45,904 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:17:45,904 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:17:45,904 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:17:45,905 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:17:45,905 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:17:45,905 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:17:45,905 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 11:17:45,936 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:17:45,950 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:17:45,956 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:17:45,957 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:17:45,957 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:17:45,958 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-examples/standard_copyInitSum2_true-unreach-call_ground.i [2019-05-23 11:17:46,023 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5f9f14d/c3d45b34d6194547a089371b64d0d1fc/FLAG23ff2494a [2019-05-23 11:17:46,437 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:17:46,437 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-examples/standard_copyInitSum2_true-unreach-call_ground.i [2019-05-23 11:17:46,444 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5f9f14d/c3d45b34d6194547a089371b64d0d1fc/FLAG23ff2494a [2019-05-23 11:17:46,847 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5f9f14d/c3d45b34d6194547a089371b64d0d1fc [2019-05-23 11:17:46,855 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:17:46,857 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:17:46,858 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:46,858 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:17:46,861 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:17:46,862 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:46" (1/1) ... [2019-05-23 11:17:46,865 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@786e5778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:46, skipping insertion in model container [2019-05-23 11:17:46,866 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:17:46" (1/1) ... [2019-05-23 11:17:46,873 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:17:46,896 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:17:47,111 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:47,118 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:17:47,147 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:17:47,175 INFO L146 ILogger]: Completed translation [2019-05-23 11:17:47,175 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47 WrapperNode [2019-05-23 11:17:47,176 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:17:47,177 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:47,177 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:17:47,177 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:17:47,185 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,193 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,218 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:17:47,218 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:17:47,218 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:17:47,218 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:17:47,318 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,319 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,320 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,321 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,326 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,336 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,337 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (1/1) ... [2019-05-23 11:17:47,345 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:17:47,349 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:17:47,349 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:17:47,349 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:17:47,353 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (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 11:17:47,405 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:17:47,406 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:17:47,406 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:17:47,406 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:17:47,406 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:17:47,406 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:17:47,866 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:17:47,867 INFO L146 ILogger]: Removed 10 assume(true) statements. [2019-05-23 11:17:47,868 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:47 BoogieIcfgContainer [2019-05-23 11:17:47,868 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:17:47,869 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:17:47,869 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:17:47,872 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:17:47,873 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:17:46" (1/3) ... [2019-05-23 11:17:47,874 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5990d51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:47, skipping insertion in model container [2019-05-23 11:17:47,874 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:17:47" (2/3) ... [2019-05-23 11:17:47,874 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5990d51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:17:47, skipping insertion in model container [2019-05-23 11:17:47,875 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:17:47" (3/3) ... [2019-05-23 11:17:47,876 INFO L146 ILogger]: Analyzing ICFG standard_copyInitSum2_true-unreach-call_ground.i [2019-05-23 11:17:47,886 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:17:47,894 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:17:47,911 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:17:47,938 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:17:47,939 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:17:47,939 INFO L146 ILogger]: Hoare is true [2019-05-23 11:17:47,939 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:17:47,940 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:17:47,940 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:17:47,940 INFO L146 ILogger]: Difference is false [2019-05-23 11:17:47,940 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:17:47,940 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:17:47,955 INFO L146 ILogger]: Start isEmpty. Operand 48 states. [2019-05-23 11:17:47,962 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:17:47,963 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:47,963 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:47,965 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:47,970 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:47,970 INFO L146 ILogger]: Analyzing trace with hash -78465259, now seen corresponding path program 1 times [2019-05-23 11:17:47,972 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:47,972 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:48,015 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,015 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:48,015 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,053 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,093 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 11:17:48,096 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:48,097 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:17:48,101 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:17:48,115 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:17:48,116 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:17:48,119 INFO L146 ILogger]: Start difference. First operand 48 states. Second operand 2 states. [2019-05-23 11:17:48,136 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:48,136 INFO L146 ILogger]: Finished difference Result 86 states and 100 transitions. [2019-05-23 11:17:48,137 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:17:48,138 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:17:48,138 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:48,146 INFO L146 ILogger]: With dead ends: 86 [2019-05-23 11:17:48,146 INFO L146 ILogger]: Without dead ends: 40 [2019-05-23 11:17:48,151 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 11:17:48,169 INFO L146 ILogger]: Start minimizeSevpa. Operand 40 states. [2019-05-23 11:17:48,183 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-05-23 11:17:48,184 INFO L146 ILogger]: Start removeUnreachable. Operand 40 states. [2019-05-23 11:17:48,185 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-05-23 11:17:48,187 INFO L146 ILogger]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 21 [2019-05-23 11:17:48,187 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:48,187 INFO L146 ILogger]: Abstraction has 40 states and 43 transitions. [2019-05-23 11:17:48,187 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:17:48,188 INFO L146 ILogger]: Start isEmpty. Operand 40 states and 43 transitions. [2019-05-23 11:17:48,188 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:17:48,189 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:48,189 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:48,189 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:48,189 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:48,190 INFO L146 ILogger]: Analyzing trace with hash -598342159, now seen corresponding path program 1 times [2019-05-23 11:17:48,190 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:48,190 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:48,191 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,191 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:48,191 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,210 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,252 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 11:17:48,252 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:17:48,253 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:17:48,255 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:17:48,256 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:17:48,256 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:17:48,257 INFO L146 ILogger]: Start difference. First operand 40 states and 43 transitions. Second operand 3 states. [2019-05-23 11:17:48,411 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:48,411 INFO L146 ILogger]: Finished difference Result 85 states and 93 transitions. [2019-05-23 11:17:48,412 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:17:48,412 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 21 [2019-05-23 11:17:48,413 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:48,413 INFO L146 ILogger]: With dead ends: 85 [2019-05-23 11:17:48,414 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:17:48,416 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 11:17:48,416 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:17:48,422 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 43. [2019-05-23 11:17:48,422 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:17:48,423 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2019-05-23 11:17:48,423 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 21 [2019-05-23 11:17:48,424 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:48,424 INFO L146 ILogger]: Abstraction has 43 states and 46 transitions. [2019-05-23 11:17:48,424 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:17:48,424 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 46 transitions. [2019-05-23 11:17:48,425 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:17:48,426 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:48,426 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:48,426 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:48,427 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:48,427 INFO L146 ILogger]: Analyzing trace with hash -600254027, now seen corresponding path program 1 times [2019-05-23 11:17:48,427 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:48,427 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:48,428 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,429 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:48,429 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:48,449 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,654 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:17:48,654 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:48,655 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 11:17:48,675 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:48,728 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:48,730 INFO L146 ILogger]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:17:48,741 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:48,904 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:17:48,936 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:48,936 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-05-23 11:17:48,937 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:17:48,937 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:17:48,938 INFO L146 ILogger]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:17:48,938 INFO L146 ILogger]: Start difference. First operand 43 states and 46 transitions. Second operand 6 states. [2019-05-23 11:17:49,441 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:49,441 INFO L146 ILogger]: Finished difference Result 97 states and 104 transitions. [2019-05-23 11:17:49,441 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:17:49,442 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 38 [2019-05-23 11:17:49,442 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:49,443 INFO L146 ILogger]: With dead ends: 97 [2019-05-23 11:17:49,443 INFO L146 ILogger]: Without dead ends: 65 [2019-05-23 11:17:49,444 INFO L146 ILogger]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:17:49,444 INFO L146 ILogger]: Start minimizeSevpa. Operand 65 states. [2019-05-23 11:17:49,450 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 65 to 53. [2019-05-23 11:17:49,450 INFO L146 ILogger]: Start removeUnreachable. Operand 53 states. [2019-05-23 11:17:49,451 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2019-05-23 11:17:49,451 INFO L146 ILogger]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 38 [2019-05-23 11:17:49,452 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:49,452 INFO L146 ILogger]: Abstraction has 53 states and 56 transitions. [2019-05-23 11:17:49,452 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:17:49,452 INFO L146 ILogger]: Start isEmpty. Operand 53 states and 56 transitions. [2019-05-23 11:17:49,454 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 49 [2019-05-23 11:17:49,454 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:49,454 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:49,454 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:49,455 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:49,455 INFO L146 ILogger]: Analyzing trace with hash 522975862, now seen corresponding path program 2 times [2019-05-23 11:17:49,455 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:49,455 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:49,457 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:49,457 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:49,457 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:49,498 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,610 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:17:49,610 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:49,611 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 11:17:49,629 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:49,664 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:49,664 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:49,665 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:17:49,669 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:49,816 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-05-23 11:17:49,843 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:49,844 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-05-23 11:17:49,844 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:17:49,845 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:17:49,845 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:17:49,845 INFO L146 ILogger]: Start difference. First operand 53 states and 56 transitions. Second operand 7 states. [2019-05-23 11:17:50,114 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:50,115 INFO L146 ILogger]: Finished difference Result 109 states and 116 transitions. [2019-05-23 11:17:50,115 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:17:50,115 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 48 [2019-05-23 11:17:50,116 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:50,117 INFO L146 ILogger]: With dead ends: 109 [2019-05-23 11:17:50,117 INFO L146 ILogger]: Without dead ends: 70 [2019-05-23 11:17:50,123 INFO L146 ILogger]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:17:50,124 INFO L146 ILogger]: Start minimizeSevpa. Operand 70 states. [2019-05-23 11:17:50,134 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 70 to 63. [2019-05-23 11:17:50,135 INFO L146 ILogger]: Start removeUnreachable. Operand 63 states. [2019-05-23 11:17:50,136 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2019-05-23 11:17:50,139 INFO L146 ILogger]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 48 [2019-05-23 11:17:50,140 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:50,140 INFO L146 ILogger]: Abstraction has 63 states and 66 transitions. [2019-05-23 11:17:50,140 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:17:50,140 INFO L146 ILogger]: Start isEmpty. Operand 63 states and 66 transitions. [2019-05-23 11:17:50,143 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 59 [2019-05-23 11:17:50,143 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:50,143 INFO L146 ILogger]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:50,144 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:50,144 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:50,144 INFO L146 ILogger]: Analyzing trace with hash 1871245372, now seen corresponding path program 3 times [2019-05-23 11:17:50,144 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:50,145 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:50,146 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,146 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:50,150 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,188 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:50,372 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:17:50,373 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:50,373 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 11:17:50,381 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:50,431 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:17:50,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:50,432 INFO L146 ILogger]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:17:50,435 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:50,535 INFO L146 ILogger]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:17:50,553 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:50,553 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-05-23 11:17:50,553 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:17:50,554 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:17:50,554 INFO L146 ILogger]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:17:50,554 INFO L146 ILogger]: Start difference. First operand 63 states and 66 transitions. Second operand 10 states. [2019-05-23 11:17:50,927 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:50,927 INFO L146 ILogger]: Finished difference Result 119 states and 125 transitions. [2019-05-23 11:17:50,928 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:17:50,928 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 58 [2019-05-23 11:17:50,929 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:50,929 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:17:50,929 INFO L146 ILogger]: Without dead ends: 89 [2019-05-23 11:17:50,931 INFO L146 ILogger]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:17:50,932 INFO L146 ILogger]: Start minimizeSevpa. Operand 89 states. [2019-05-23 11:17:50,938 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 89 to 77. [2019-05-23 11:17:50,938 INFO L146 ILogger]: Start removeUnreachable. Operand 77 states. [2019-05-23 11:17:50,939 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2019-05-23 11:17:50,939 INFO L146 ILogger]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 58 [2019-05-23 11:17:50,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:50,940 INFO L146 ILogger]: Abstraction has 77 states and 80 transitions. [2019-05-23 11:17:50,940 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:17:50,940 INFO L146 ILogger]: Start isEmpty. Operand 77 states and 80 transitions. [2019-05-23 11:17:50,941 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 73 [2019-05-23 11:17:50,941 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:50,941 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:50,942 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:50,942 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:50,942 INFO L146 ILogger]: Analyzing trace with hash 1585175093, now seen corresponding path program 4 times [2019-05-23 11:17:50,942 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:50,942 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:50,943 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,943 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:50,944 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:50,964 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:51,076 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:17:51,077 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:51,077 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 11:17:51,088 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:51,135 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:51,135 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:51,136 INFO L146 ILogger]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:17:51,139 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:51,180 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:17:51,199 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:51,199 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 10 [2019-05-23 11:17:51,200 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:17:51,200 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:17:51,201 INFO L146 ILogger]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:17:51,201 INFO L146 ILogger]: Start difference. First operand 77 states and 80 transitions. Second operand 10 states. [2019-05-23 11:17:51,809 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:51,810 INFO L146 ILogger]: Finished difference Result 154 states and 161 transitions. [2019-05-23 11:17:51,811 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:17:51,811 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 72 [2019-05-23 11:17:51,812 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:51,812 INFO L146 ILogger]: With dead ends: 154 [2019-05-23 11:17:51,813 INFO L146 ILogger]: Without dead ends: 94 [2019-05-23 11:17:51,813 INFO L146 ILogger]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:51,814 INFO L146 ILogger]: Start minimizeSevpa. Operand 94 states. [2019-05-23 11:17:51,820 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 94 to 87. [2019-05-23 11:17:51,820 INFO L146 ILogger]: Start removeUnreachable. Operand 87 states. [2019-05-23 11:17:51,821 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2019-05-23 11:17:51,822 INFO L146 ILogger]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 72 [2019-05-23 11:17:51,822 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:51,822 INFO L146 ILogger]: Abstraction has 87 states and 90 transitions. [2019-05-23 11:17:51,822 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:17:51,822 INFO L146 ILogger]: Start isEmpty. Operand 87 states and 90 transitions. [2019-05-23 11:17:51,824 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 83 [2019-05-23 11:17:51,824 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:51,825 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:51,825 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:51,825 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:51,825 INFO L146 ILogger]: Analyzing trace with hash -1727862922, now seen corresponding path program 5 times [2019-05-23 11:17:51,825 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:51,826 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:51,826 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:51,827 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:51,827 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:51,868 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:52,009 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-05-23 11:17:52,010 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:52,010 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:17:52,019 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:17:52,132 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2019-05-23 11:17:52,132 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:52,133 INFO L146 ILogger]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:52,136 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:52,231 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2019-05-23 11:17:52,250 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:52,250 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 15 [2019-05-23 11:17:52,251 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:17:52,251 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:17:52,251 INFO L146 ILogger]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:17:52,252 INFO L146 ILogger]: Start difference. First operand 87 states and 90 transitions. Second operand 15 states. [2019-05-23 11:17:52,658 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:52,658 INFO L146 ILogger]: Finished difference Result 183 states and 191 transitions. [2019-05-23 11:17:52,662 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:52,662 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 82 [2019-05-23 11:17:52,662 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:52,663 INFO L146 ILogger]: With dead ends: 183 [2019-05-23 11:17:52,663 INFO L146 ILogger]: Without dead ends: 116 [2019-05-23 11:17:52,664 INFO L146 ILogger]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:17:52,667 INFO L146 ILogger]: Start minimizeSevpa. Operand 116 states. [2019-05-23 11:17:52,680 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 116 to 104. [2019-05-23 11:17:52,680 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:17:52,683 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 107 transitions. [2019-05-23 11:17:52,683 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 107 transitions. Word has length 82 [2019-05-23 11:17:52,684 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:52,684 INFO L146 ILogger]: Abstraction has 104 states and 107 transitions. [2019-05-23 11:17:52,684 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:17:52,684 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 107 transitions. [2019-05-23 11:17:52,687 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 100 [2019-05-23 11:17:52,687 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:52,687 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:52,687 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:52,688 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:52,690 INFO L146 ILogger]: Analyzing trace with hash 1662422322, now seen corresponding path program 6 times [2019-05-23 11:17:52,690 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:52,690 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:52,691 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:52,691 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:52,691 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:52,726 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:52,859 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:17:52,860 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:52,860 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 11:17:52,871 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:17:53,020 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2019-05-23 11:17:53,020 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:53,021 INFO L146 ILogger]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2019-05-23 11:17:53,024 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:53,051 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-05-23 11:17:53,073 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:53,074 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 14 [2019-05-23 11:17:53,074 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:17:53,074 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:17:53,075 INFO L146 ILogger]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:17:53,075 INFO L146 ILogger]: Start difference. First operand 104 states and 107 transitions. Second operand 14 states. [2019-05-23 11:17:53,372 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:53,373 INFO L146 ILogger]: Finished difference Result 202 states and 209 transitions. [2019-05-23 11:17:53,373 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:17:53,373 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 99 [2019-05-23 11:17:53,374 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:53,374 INFO L146 ILogger]: With dead ends: 202 [2019-05-23 11:17:53,374 INFO L146 ILogger]: Without dead ends: 121 [2019-05-23 11:17:53,375 INFO L146 ILogger]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:17:53,376 INFO L146 ILogger]: Start minimizeSevpa. Operand 121 states. [2019-05-23 11:17:53,382 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 121 to 114. [2019-05-23 11:17:53,382 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:17:53,383 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2019-05-23 11:17:53,383 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 99 [2019-05-23 11:17:53,383 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:53,383 INFO L146 ILogger]: Abstraction has 114 states and 117 transitions. [2019-05-23 11:17:53,383 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:17:53,384 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 117 transitions. [2019-05-23 11:17:53,385 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:17:53,385 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:53,386 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:53,386 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:53,386 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:53,386 INFO L146 ILogger]: Analyzing trace with hash 351034001, now seen corresponding path program 7 times [2019-05-23 11:17:53,387 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:53,387 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:53,387 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:53,388 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:53,388 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:53,423 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:53,629 INFO L146 ILogger]: Checked inductivity of 208 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-05-23 11:17:53,629 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:53,629 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 11:17:53,638 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:53,670 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:53,671 INFO L146 ILogger]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:17:53,674 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:53,706 INFO L146 ILogger]: Checked inductivity of 208 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2019-05-23 11:17:53,725 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:53,726 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 16 [2019-05-23 11:17:53,726 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:17:53,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:17:53,728 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:17:53,728 INFO L146 ILogger]: Start difference. First operand 114 states and 117 transitions. Second operand 16 states. [2019-05-23 11:17:54,287 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:54,287 INFO L146 ILogger]: Finished difference Result 219 states and 226 transitions. [2019-05-23 11:17:54,288 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:17:54,288 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 109 [2019-05-23 11:17:54,289 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:54,290 INFO L146 ILogger]: With dead ends: 219 [2019-05-23 11:17:54,290 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:17:54,291 INFO L146 ILogger]: 0 DeclaredPredicates, 135 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:17:54,291 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:17:54,296 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 124. [2019-05-23 11:17:54,296 INFO L146 ILogger]: Start removeUnreachable. Operand 124 states. [2019-05-23 11:17:54,297 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2019-05-23 11:17:54,297 INFO L146 ILogger]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 109 [2019-05-23 11:17:54,297 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:54,297 INFO L146 ILogger]: Abstraction has 124 states and 127 transitions. [2019-05-23 11:17:54,298 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:17:54,298 INFO L146 ILogger]: Start isEmpty. Operand 124 states and 127 transitions. [2019-05-23 11:17:54,299 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:17:54,299 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:54,300 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:54,300 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:54,300 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:54,300 INFO L146 ILogger]: Analyzing trace with hash 444321298, now seen corresponding path program 8 times [2019-05-23 11:17:54,301 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:54,301 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:54,301 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:54,301 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:17:54,302 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:54,320 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:54,611 INFO L146 ILogger]: Checked inductivity of 270 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2019-05-23 11:17:54,612 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:54,612 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 11:17:54,623 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:17:54,652 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:17:54,652 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:54,653 INFO L146 ILogger]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2019-05-23 11:17:54,656 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:54,686 INFO L146 ILogger]: Checked inductivity of 270 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-05-23 11:17:54,706 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:54,706 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10] total 18 [2019-05-23 11:17:54,707 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:17:54,707 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:17:54,708 INFO L146 ILogger]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:17:54,708 INFO L146 ILogger]: Start difference. First operand 124 states and 127 transitions. Second operand 18 states. [2019-05-23 11:17:55,157 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:55,158 INFO L146 ILogger]: Finished difference Result 236 states and 243 transitions. [2019-05-23 11:17:55,158 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:17:55,159 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 119 [2019-05-23 11:17:55,159 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:55,160 INFO L146 ILogger]: With dead ends: 236 [2019-05-23 11:17:55,160 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:17:55,161 INFO L146 ILogger]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=329, Invalid=663, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:17:55,161 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:17:55,166 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 134. [2019-05-23 11:17:55,167 INFO L146 ILogger]: Start removeUnreachable. Operand 134 states. [2019-05-23 11:17:55,167 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2019-05-23 11:17:55,168 INFO L146 ILogger]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 119 [2019-05-23 11:17:55,168 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:55,168 INFO L146 ILogger]: Abstraction has 134 states and 137 transitions. [2019-05-23 11:17:55,168 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:17:55,168 INFO L146 ILogger]: Start isEmpty. Operand 134 states and 137 transitions. [2019-05-23 11:17:55,170 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 130 [2019-05-23 11:17:55,171 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:55,171 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:55,171 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:55,171 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:55,172 INFO L146 ILogger]: Analyzing trace with hash 285581617, now seen corresponding path program 9 times [2019-05-23 11:17:55,172 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:55,172 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:55,173 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,173 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:55,173 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:55,195 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:55,472 INFO L146 ILogger]: Checked inductivity of 342 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2019-05-23 11:17:55,472 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:55,472 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 11:17:55,481 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:17:55,521 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:17:55,521 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:55,522 INFO L146 ILogger]: Trace formula consists of 144 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:17:55,525 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:55,675 INFO L146 ILogger]: Checked inductivity of 342 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2019-05-23 11:17:55,694 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:55,694 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 26 [2019-05-23 11:17:55,695 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:17:55,695 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:17:55,696 INFO L146 ILogger]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:17:55,696 INFO L146 ILogger]: Start difference. First operand 134 states and 137 transitions. Second operand 26 states. [2019-05-23 11:17:56,381 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:56,382 INFO L146 ILogger]: Finished difference Result 266 states and 275 transitions. [2019-05-23 11:17:56,382 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:17:56,382 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 129 [2019-05-23 11:17:56,383 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:56,384 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:17:56,385 INFO L146 ILogger]: Without dead ends: 164 [2019-05-23 11:17:56,386 INFO L146 ILogger]: 0 DeclaredPredicates, 171 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=623, Invalid=1827, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:17:56,387 INFO L146 ILogger]: Start minimizeSevpa. Operand 164 states. [2019-05-23 11:17:56,390 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 164 to 154. [2019-05-23 11:17:56,391 INFO L146 ILogger]: Start removeUnreachable. Operand 154 states. [2019-05-23 11:17:56,391 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 154 states to 154 states and 157 transitions. [2019-05-23 11:17:56,392 INFO L146 ILogger]: Start accepts. Automaton has 154 states and 157 transitions. Word has length 129 [2019-05-23 11:17:56,392 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:56,392 INFO L146 ILogger]: Abstraction has 154 states and 157 transitions. [2019-05-23 11:17:56,392 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:17:56,392 INFO L146 ILogger]: Start isEmpty. Operand 154 states and 157 transitions. [2019-05-23 11:17:56,394 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 150 [2019-05-23 11:17:56,394 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:56,395 INFO L146 ILogger]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:56,395 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:56,395 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:56,395 INFO L146 ILogger]: Analyzing trace with hash -1742429494, now seen corresponding path program 10 times [2019-05-23 11:17:56,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:56,396 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:56,396 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,397 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:56,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:56,417 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:56,653 INFO L146 ILogger]: Checked inductivity of 481 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2019-05-23 11:17:56,654 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:56,654 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 11:17:56,662 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:17:56,878 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:17:56,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:56,880 INFO L146 ILogger]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:17:56,882 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:17:56,999 INFO L146 ILogger]: Checked inductivity of 481 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2019-05-23 11:17:57,018 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:17:57,018 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 23 [2019-05-23 11:17:57,018 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:17:57,019 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:17:57,019 INFO L146 ILogger]: CoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:17:57,019 INFO L146 ILogger]: Start difference. First operand 154 states and 157 transitions. Second operand 23 states. [2019-05-23 11:17:57,708 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:17:57,708 INFO L146 ILogger]: Finished difference Result 287 states and 294 transitions. [2019-05-23 11:17:57,709 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:17:57,709 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 149 [2019-05-23 11:17:57,709 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:17:57,711 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:17:57,711 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:17:57,712 INFO L146 ILogger]: 0 DeclaredPredicates, 187 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=542, Invalid=1098, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:17:57,712 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:17:57,716 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 164. [2019-05-23 11:17:57,716 INFO L146 ILogger]: Start removeUnreachable. Operand 164 states. [2019-05-23 11:17:57,717 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 164 states to 164 states and 167 transitions. [2019-05-23 11:17:57,717 INFO L146 ILogger]: Start accepts. Automaton has 164 states and 167 transitions. Word has length 149 [2019-05-23 11:17:57,717 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:17:57,718 INFO L146 ILogger]: Abstraction has 164 states and 167 transitions. [2019-05-23 11:17:57,718 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:17:57,718 INFO L146 ILogger]: Start isEmpty. Operand 164 states and 167 transitions. [2019-05-23 11:17:57,719 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 160 [2019-05-23 11:17:57,720 INFO L146 ILogger]: Found error trace [2019-05-23 11:17:57,720 INFO L146 ILogger]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:17:57,720 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:17:57,720 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:17:57,721 INFO L146 ILogger]: Analyzing trace with hash 1305373387, now seen corresponding path program 11 times [2019-05-23 11:17:57,721 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:17:57,721 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:17:57,722 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,722 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:17:57,722 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:17:57,760 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:17:58,178 INFO L146 ILogger]: Checked inductivity of 576 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2019-05-23 11:17:58,179 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:17:58,179 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 11:17:58,189 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:18:11,129 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-05-23 11:18:11,129 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:11,138 INFO L146 ILogger]: Trace formula consists of 242 conjuncts, 13 conjunts are in the unsatisfiable core [2019-05-23 11:18:11,140 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:11,237 INFO L146 ILogger]: Checked inductivity of 576 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2019-05-23 11:18:11,259 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:11,260 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 14] total 25 [2019-05-23 11:18:11,260 INFO L146 ILogger]: Interpolant automaton has 25 states [2019-05-23 11:18:11,260 INFO L146 ILogger]: Constructing interpolant automaton starting with 25 interpolants. [2019-05-23 11:18:11,261 INFO L146 ILogger]: CoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:18:11,261 INFO L146 ILogger]: Start difference. First operand 164 states and 167 transitions. Second operand 25 states. [2019-05-23 11:18:11,972 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:11,972 INFO L146 ILogger]: Finished difference Result 304 states and 311 transitions. [2019-05-23 11:18:11,972 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:18:11,972 INFO L146 ILogger]: Start accepts. Automaton has 25 states. Word has length 159 [2019-05-23 11:18:11,973 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:11,974 INFO L146 ILogger]: With dead ends: 304 [2019-05-23 11:18:11,974 INFO L146 ILogger]: Without dead ends: 181 [2019-05-23 11:18:11,976 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=651, Invalid=1329, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:18:11,976 INFO L146 ILogger]: Start minimizeSevpa. Operand 181 states. [2019-05-23 11:18:11,979 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 181 to 174. [2019-05-23 11:18:11,980 INFO L146 ILogger]: Start removeUnreachable. Operand 174 states. [2019-05-23 11:18:11,980 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 174 states to 174 states and 177 transitions. [2019-05-23 11:18:11,981 INFO L146 ILogger]: Start accepts. Automaton has 174 states and 177 transitions. Word has length 159 [2019-05-23 11:18:11,981 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:11,981 INFO L146 ILogger]: Abstraction has 174 states and 177 transitions. [2019-05-23 11:18:11,981 INFO L146 ILogger]: Interpolant automaton has 25 states. [2019-05-23 11:18:11,981 INFO L146 ILogger]: Start isEmpty. Operand 174 states and 177 transitions. [2019-05-23 11:18:11,983 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:18:11,983 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:11,983 INFO L146 ILogger]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:11,983 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:11,984 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:11,984 INFO L146 ILogger]: Analyzing trace with hash 49355114, now seen corresponding path program 12 times [2019-05-23 11:18:11,984 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:11,984 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:11,985 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:11,985 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:11,985 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:12,002 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:12,951 INFO L146 ILogger]: Checked inductivity of 681 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2019-05-23 11:18:12,951 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:12,952 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 11:18:12,960 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:18:14,539 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:18:14,540 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:14,544 INFO L146 ILogger]: Trace formula consists of 228 conjuncts, 23 conjunts are in the unsatisfiable core [2019-05-23 11:18:14,546 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:14,817 INFO L146 ILogger]: Checked inductivity of 681 backedges. 105 proven. 75 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2019-05-23 11:18:14,837 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:14,837 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16] total 34 [2019-05-23 11:18:14,838 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:18:14,838 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:18:14,839 INFO L146 ILogger]: CoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:18:14,839 INFO L146 ILogger]: Start difference. First operand 174 states and 177 transitions. Second operand 34 states. [2019-05-23 11:18:16,138 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:16,138 INFO L146 ILogger]: Finished difference Result 331 states and 339 transitions. [2019-05-23 11:18:16,139 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2019-05-23 11:18:16,139 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 169 [2019-05-23 11:18:16,139 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:16,140 INFO L146 ILogger]: With dead ends: 331 [2019-05-23 11:18:16,141 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:18:16,143 INFO L146 ILogger]: 0 DeclaredPredicates, 228 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1158, Invalid=3534, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:18:16,144 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:18:16,147 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 191. [2019-05-23 11:18:16,147 INFO L146 ILogger]: Start removeUnreachable. Operand 191 states. [2019-05-23 11:18:16,148 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2019-05-23 11:18:16,148 INFO L146 ILogger]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 169 [2019-05-23 11:18:16,148 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:16,148 INFO L146 ILogger]: Abstraction has 191 states and 194 transitions. [2019-05-23 11:18:16,148 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:18:16,148 INFO L146 ILogger]: Start isEmpty. Operand 191 states and 194 transitions. [2019-05-23 11:18:16,149 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 187 [2019-05-23 11:18:16,149 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:16,149 INFO L146 ILogger]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:16,150 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:16,150 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:16,150 INFO L146 ILogger]: Analyzing trace with hash -944719332, now seen corresponding path program 13 times [2019-05-23 11:18:16,150 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:16,150 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:16,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:16,151 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:16,151 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:16,170 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:16,479 INFO L146 ILogger]: Checked inductivity of 832 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2019-05-23 11:18:16,480 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:16,480 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 11:18:16,488 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:16,529 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:16,530 INFO L146 ILogger]: Trace formula consists of 280 conjuncts, 15 conjunts are in the unsatisfiable core [2019-05-23 11:18:16,533 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:16,669 INFO L146 ILogger]: Checked inductivity of 832 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2019-05-23 11:18:16,697 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:16,698 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16] total 29 [2019-05-23 11:18:16,698 INFO L146 ILogger]: Interpolant automaton has 29 states [2019-05-23 11:18:16,699 INFO L146 ILogger]: Constructing interpolant automaton starting with 29 interpolants. [2019-05-23 11:18:16,699 INFO L146 ILogger]: CoverageRelationStatistics Valid=226, Invalid=586, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:18:16,699 INFO L146 ILogger]: Start difference. First operand 191 states and 194 transitions. Second operand 29 states. [2019-05-23 11:18:17,929 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:17,929 INFO L146 ILogger]: Finished difference Result 352 states and 359 transitions. [2019-05-23 11:18:17,930 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:18:17,930 INFO L146 ILogger]: Start accepts. Automaton has 29 states. Word has length 186 [2019-05-23 11:18:17,930 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:17,932 INFO L146 ILogger]: With dead ends: 352 [2019-05-23 11:18:17,932 INFO L146 ILogger]: Without dead ends: 208 [2019-05-23 11:18:17,934 INFO L146 ILogger]: 0 DeclaredPredicates, 236 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=899, Invalid=1857, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:18:17,934 INFO L146 ILogger]: Start minimizeSevpa. Operand 208 states. [2019-05-23 11:18:17,937 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 208 to 201. [2019-05-23 11:18:17,938 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:18:17,938 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 204 transitions. [2019-05-23 11:18:17,939 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 204 transitions. Word has length 186 [2019-05-23 11:18:17,939 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:17,939 INFO L146 ILogger]: Abstraction has 201 states and 204 transitions. [2019-05-23 11:18:17,939 INFO L146 ILogger]: Interpolant automaton has 29 states. [2019-05-23 11:18:17,939 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 204 transitions. [2019-05-23 11:18:17,940 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 197 [2019-05-23 11:18:17,940 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:17,940 INFO L146 ILogger]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:17,941 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:17,941 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:17,941 INFO L146 ILogger]: Analyzing trace with hash 1044667613, now seen corresponding path program 14 times [2019-05-23 11:18:17,941 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:17,941 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:17,942 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:17,942 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:18:17,942 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:17,962 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:18,822 INFO L146 ILogger]: Checked inductivity of 957 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2019-05-23 11:18:18,823 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:18,823 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 11:18:18,831 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:18:18,877 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:18:18,878 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:18,879 INFO L146 ILogger]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:18:18,881 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:18,963 INFO L146 ILogger]: Checked inductivity of 957 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-05-23 11:18:18,981 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:18,982 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 17] total 31 [2019-05-23 11:18:18,982 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:18:18,982 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:18:18,983 INFO L146 ILogger]: CoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:18:18,983 INFO L146 ILogger]: Start difference. First operand 201 states and 204 transitions. Second operand 31 states. [2019-05-23 11:18:19,635 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:19,635 INFO L146 ILogger]: Finished difference Result 369 states and 376 transitions. [2019-05-23 11:18:19,635 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-05-23 11:18:19,636 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 196 [2019-05-23 11:18:19,636 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:19,637 INFO L146 ILogger]: With dead ends: 369 [2019-05-23 11:18:19,638 INFO L146 ILogger]: Without dead ends: 218 [2019-05-23 11:18:19,640 INFO L146 ILogger]: 0 DeclaredPredicates, 250 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1038, Invalid=2154, Unknown=0, NotChecked=0, Total=3192 [2019-05-23 11:18:19,640 INFO L146 ILogger]: Start minimizeSevpa. Operand 218 states. [2019-05-23 11:18:19,643 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 218 to 211. [2019-05-23 11:18:19,643 INFO L146 ILogger]: Start removeUnreachable. Operand 211 states. [2019-05-23 11:18:19,644 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 211 states to 211 states and 214 transitions. [2019-05-23 11:18:19,644 INFO L146 ILogger]: Start accepts. Automaton has 211 states and 214 transitions. Word has length 196 [2019-05-23 11:18:19,644 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:19,644 INFO L146 ILogger]: Abstraction has 211 states and 214 transitions. [2019-05-23 11:18:19,644 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:18:19,645 INFO L146 ILogger]: Start isEmpty. Operand 211 states and 214 transitions. [2019-05-23 11:18:19,645 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 207 [2019-05-23 11:18:19,646 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:19,646 INFO L146 ILogger]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:19,646 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:19,646 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:19,647 INFO L146 ILogger]: Analyzing trace with hash -1650713284, now seen corresponding path program 15 times [2019-05-23 11:18:19,647 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:19,647 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:19,647 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:19,648 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:19,648 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:19,669 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:20,144 INFO L146 ILogger]: Checked inductivity of 1092 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-05-23 11:18:20,145 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:20,145 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 11:18:20,153 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:18:20,488 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:18:20,488 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:20,490 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:18:20,492 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:20,649 INFO L146 ILogger]: Checked inductivity of 1092 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2019-05-23 11:18:20,668 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:20,669 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 38 [2019-05-23 11:18:20,669 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:18:20,669 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:18:20,670 INFO L146 ILogger]: CoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:18:20,670 INFO L146 ILogger]: Start difference. First operand 211 states and 214 transitions. Second operand 38 states. [2019-05-23 11:18:23,268 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:23,269 INFO L146 ILogger]: Finished difference Result 295 states and 301 transitions. [2019-05-23 11:18:23,269 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:18:23,269 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 206 [2019-05-23 11:18:23,270 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:23,271 INFO L146 ILogger]: With dead ends: 295 [2019-05-23 11:18:23,272 INFO L146 ILogger]: Without dead ends: 237 [2019-05-23 11:18:23,274 INFO L146 ILogger]: 0 DeclaredPredicates, 276 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1209 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1445, Invalid=4561, Unknown=0, NotChecked=0, Total=6006 [2019-05-23 11:18:23,275 INFO L146 ILogger]: Start minimizeSevpa. Operand 237 states. [2019-05-23 11:18:23,279 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 237 to 225. [2019-05-23 11:18:23,279 INFO L146 ILogger]: Start removeUnreachable. Operand 225 states. [2019-05-23 11:18:23,280 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 225 states to 225 states and 228 transitions. [2019-05-23 11:18:23,280 INFO L146 ILogger]: Start accepts. Automaton has 225 states and 228 transitions. Word has length 206 [2019-05-23 11:18:23,280 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:23,280 INFO L146 ILogger]: Abstraction has 225 states and 228 transitions. [2019-05-23 11:18:23,280 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:18:23,280 INFO L146 ILogger]: Start isEmpty. Operand 225 states and 228 transitions. [2019-05-23 11:18:23,281 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 221 [2019-05-23 11:18:23,281 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:23,282 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:23,282 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:23,282 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:23,282 INFO L146 ILogger]: Analyzing trace with hash -482674763, now seen corresponding path program 16 times [2019-05-23 11:18:23,283 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:23,283 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:23,283 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:23,283 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:23,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:23,305 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:23,740 INFO L146 ILogger]: Checked inductivity of 1234 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2019-05-23 11:18:23,740 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:23,740 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 11:18:23,750 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:18:23,920 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:18:23,920 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:23,922 INFO L146 ILogger]: Trace formula consists of 328 conjuncts, 17 conjunts are in the unsatisfiable core [2019-05-23 11:18:23,924 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:18:23,988 INFO L146 ILogger]: Checked inductivity of 1234 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2019-05-23 11:18:24,008 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:18:24,008 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 18] total 34 [2019-05-23 11:18:24,008 INFO L146 ILogger]: Interpolant automaton has 34 states [2019-05-23 11:18:24,009 INFO L146 ILogger]: Constructing interpolant automaton starting with 34 interpolants. [2019-05-23 11:18:24,009 INFO L146 ILogger]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2019-05-23 11:18:24,009 INFO L146 ILogger]: Start difference. First operand 225 states and 228 transitions. Second operand 34 states. [2019-05-23 11:18:24,871 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:18:24,871 INFO L146 ILogger]: Finished difference Result 414 states and 421 transitions. [2019-05-23 11:18:24,872 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:18:24,872 INFO L146 ILogger]: Start accepts. Automaton has 34 states. Word has length 220 [2019-05-23 11:18:24,872 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:18:24,873 INFO L146 ILogger]: With dead ends: 414 [2019-05-23 11:18:24,873 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:18:24,875 INFO L146 ILogger]: 0 DeclaredPredicates, 282 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1297, Invalid=2735, Unknown=0, NotChecked=0, Total=4032 [2019-05-23 11:18:24,876 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:18:24,880 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 235. [2019-05-23 11:18:24,880 INFO L146 ILogger]: Start removeUnreachable. Operand 235 states. [2019-05-23 11:18:24,881 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 235 states to 235 states and 238 transitions. [2019-05-23 11:18:24,881 INFO L146 ILogger]: Start accepts. Automaton has 235 states and 238 transitions. Word has length 220 [2019-05-23 11:18:24,882 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:18:24,882 INFO L146 ILogger]: Abstraction has 235 states and 238 transitions. [2019-05-23 11:18:24,882 INFO L146 ILogger]: Interpolant automaton has 34 states. [2019-05-23 11:18:24,882 INFO L146 ILogger]: Start isEmpty. Operand 235 states and 238 transitions. [2019-05-23 11:18:24,883 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 231 [2019-05-23 11:18:24,883 INFO L146 ILogger]: Found error trace [2019-05-23 11:18:24,884 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:18:24,884 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:18:24,884 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:18:24,884 INFO L146 ILogger]: Analyzing trace with hash -1375238410, now seen corresponding path program 17 times [2019-05-23 11:18:24,884 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:18:24,885 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:18:24,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:24,885 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:18:24,885 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:18:24,922 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:18:25,696 INFO L146 ILogger]: Checked inductivity of 1386 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2019-05-23 11:18:25,696 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:18:25,696 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 11:18:25,706 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1