java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/xor2_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:28:45,826 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:28:45,828 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:28:45,847 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:28:45,848 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:28:45,850 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:28:45,851 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:28:45,854 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:28:45,856 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:28:45,858 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:28:45,859 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:28:45,860 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:28:45,861 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:28:45,862 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:28:45,864 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:28:45,865 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:28:45,866 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:28:45,876 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:28:45,880 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:28:45,882 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:28:45,884 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:28:45,885 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:28:45,889 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:28:45,889 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:28:45,889 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:28:45,890 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:28:45,891 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:28:45,892 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:28:45,892 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:28:45,893 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:28:45,896 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:28:45,897 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:28:45,898 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:28:45,898 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:28:45,899 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:28:45,899 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:28:45,899 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:28:45,901 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:28:45,902 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:28:45,902 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:28:45,927 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:28:45,928 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:28:45,929 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:28:45,929 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:28:45,929 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:28:45,930 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:28:45,930 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:28:45,931 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:28:45,931 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:28:45,931 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:28:45,931 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:28:45,931 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:28:45,932 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:28:45,932 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:28:45,932 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:28:45,932 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:28:45,932 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:28:45,934 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:28:45,934 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:28:45,934 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:28:45,934 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:28:45,935 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:28:45,935 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:28:45,935 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:28:45,935 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:28:45,935 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:28:45,936 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:28:45,936 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:28:45,937 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 11:28:45,995 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:28:46,012 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:28:46,018 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:28:46,020 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:28:46,020 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:28:46,021 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/xor2_true-unreach-call.i [2019-05-23 11:28:46,085 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96b360f9/b39e7ce68af3419082d258222020b0ed/FLAG1167c9d6d [2019-05-23 11:28:46,493 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:28:46,494 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/xor2_true-unreach-call.i [2019-05-23 11:28:46,500 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96b360f9/b39e7ce68af3419082d258222020b0ed/FLAG1167c9d6d [2019-05-23 11:28:46,867 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e96b360f9/b39e7ce68af3419082d258222020b0ed [2019-05-23 11:28:46,877 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:28:46,879 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:28:46,879 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:28:46,880 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:28:46,884 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:28:46,885 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:28:46" (1/1) ... [2019-05-23 11:28:46,888 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375c1cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:46, skipping insertion in model container [2019-05-23 11:28:46,888 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:28:46" (1/1) ... [2019-05-23 11:28:46,895 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:28:46,915 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:28:47,088 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:28:47,098 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:28:47,120 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:28:47,134 INFO L146 ILogger]: Completed translation [2019-05-23 11:28:47,135 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47 WrapperNode [2019-05-23 11:28:47,135 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:28:47,136 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:28:47,136 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:28:47,137 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:28:47,144 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,154 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,178 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:28:47,178 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:28:47,179 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:28:47,179 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:28:47,187 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,187 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,190 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,190 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,286 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,292 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,294 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (1/1) ... [2019-05-23 11:28:47,296 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:28:47,296 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:28:47,296 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:28:47,297 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:28:47,297 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (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 11:28:47,352 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:28:47,352 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:28:47,352 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:28:47,353 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:28:47,353 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:28:47,353 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:28:47,953 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:28:47,953 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:28:47,954 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:28:47 BoogieIcfgContainer [2019-05-23 11:28:47,955 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:28:47,956 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:28:47,956 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:28:47,959 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:28:47,959 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:28:46" (1/3) ... [2019-05-23 11:28:47,960 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b02c620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:28:47, skipping insertion in model container [2019-05-23 11:28:47,961 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:28:47" (2/3) ... [2019-05-23 11:28:47,961 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b02c620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:28:47, skipping insertion in model container [2019-05-23 11:28:47,961 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:28:47" (3/3) ... [2019-05-23 11:28:47,963 INFO L146 ILogger]: Analyzing ICFG xor2_true-unreach-call.i [2019-05-23 11:28:47,973 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:28:47,981 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:28:47,997 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:28:48,026 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:28:48,027 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:28:48,027 INFO L146 ILogger]: Hoare is true [2019-05-23 11:28:48,027 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:28:48,028 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:28:48,028 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:28:48,028 INFO L146 ILogger]: Difference is false [2019-05-23 11:28:48,028 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:28:48,029 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:28:48,046 INFO L146 ILogger]: Start isEmpty. Operand 111 states. [2019-05-23 11:28:48,054 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:28:48,055 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:48,056 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:48,057 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:48,063 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:48,063 INFO L146 ILogger]: Analyzing trace with hash -744558543, now seen corresponding path program 1 times [2019-05-23 11:28:48,065 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:48,066 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:48,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:48,108 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:48,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:48,155 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:48,251 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 11:28:48,254 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:28:48,255 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:28:48,259 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:28:48,273 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:28:48,274 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:28:48,276 INFO L146 ILogger]: Start difference. First operand 111 states. Second operand 3 states. [2019-05-23 11:28:48,366 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:48,367 INFO L146 ILogger]: Finished difference Result 211 states and 231 transitions. [2019-05-23 11:28:48,367 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:28:48,369 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 74 [2019-05-23 11:28:48,369 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:48,379 INFO L146 ILogger]: With dead ends: 211 [2019-05-23 11:28:48,379 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:28:48,382 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 11:28:48,402 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:28:48,426 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 106. [2019-05-23 11:28:48,428 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:28:48,430 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2019-05-23 11:28:48,433 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 74 [2019-05-23 11:28:48,434 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:48,434 INFO L146 ILogger]: Abstraction has 106 states and 110 transitions. [2019-05-23 11:28:48,434 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:28:48,434 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 110 transitions. [2019-05-23 11:28:48,439 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 82 [2019-05-23 11:28:48,439 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:48,440 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:48,440 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:48,440 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:48,441 INFO L146 ILogger]: Analyzing trace with hash 490355334, now seen corresponding path program 1 times [2019-05-23 11:28:48,441 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:48,441 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:48,442 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:48,443 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:48,443 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:48,476 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:48,691 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:28:48,691 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:48,691 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 11:28:48,713 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:48,799 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:48,801 INFO L146 ILogger]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:28:48,813 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:48,959 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:28:48,989 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:28:48,990 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:28:48,992 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:28:48,994 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:28:48,995 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:28:48,995 INFO L146 ILogger]: Start difference. First operand 106 states and 110 transitions. Second operand 6 states. [2019-05-23 11:28:49,393 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:49,393 INFO L146 ILogger]: Finished difference Result 224 states and 235 transitions. [2019-05-23 11:28:49,397 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:28:49,397 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 81 [2019-05-23 11:28:49,397 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:49,399 INFO L146 ILogger]: With dead ends: 224 [2019-05-23 11:28:49,399 INFO L146 ILogger]: Without dead ends: 136 [2019-05-23 11:28:49,401 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:28:49,402 INFO L146 ILogger]: Start minimizeSevpa. Operand 136 states. [2019-05-23 11:28:49,410 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 136 to 116. [2019-05-23 11:28:49,410 INFO L146 ILogger]: Start removeUnreachable. Operand 116 states. [2019-05-23 11:28:49,411 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 116 states to 116 states and 120 transitions. [2019-05-23 11:28:49,412 INFO L146 ILogger]: Start accepts. Automaton has 116 states and 120 transitions. Word has length 81 [2019-05-23 11:28:49,412 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:49,412 INFO L146 ILogger]: Abstraction has 116 states and 120 transitions. [2019-05-23 11:28:49,412 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:28:49,413 INFO L146 ILogger]: Start isEmpty. Operand 116 states and 120 transitions. [2019-05-23 11:28:49,416 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 110 [2019-05-23 11:28:49,416 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:49,417 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:49,417 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:49,417 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:49,417 INFO L146 ILogger]: Analyzing trace with hash 1334643867, now seen corresponding path program 1 times [2019-05-23 11:28:49,418 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:49,418 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:49,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:49,419 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:49,419 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:49,442 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:49,587 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:28:49,587 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:49,588 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 11:28:49,603 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:49,641 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:49,643 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:28:49,648 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:49,697 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:28:49,716 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:28:49,716 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:28:49,717 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:28:49,717 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:28:49,718 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:28:49,721 INFO L146 ILogger]: Start difference. First operand 116 states and 120 transitions. Second operand 6 states. [2019-05-23 11:28:50,284 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:50,284 INFO L146 ILogger]: Finished difference Result 231 states and 241 transitions. [2019-05-23 11:28:50,285 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:28:50,285 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 109 [2019-05-23 11:28:50,285 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:50,288 INFO L146 ILogger]: With dead ends: 231 [2019-05-23 11:28:50,288 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:28:50,289 INFO L146 ILogger]: 0 DeclaredPredicates, 117 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:28:50,291 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:28:50,308 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 138. [2019-05-23 11:28:50,308 INFO L146 ILogger]: Start removeUnreachable. Operand 138 states. [2019-05-23 11:28:50,310 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 138 states to 138 states and 142 transitions. [2019-05-23 11:28:50,310 INFO L146 ILogger]: Start accepts. Automaton has 138 states and 142 transitions. Word has length 109 [2019-05-23 11:28:50,310 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:50,311 INFO L146 ILogger]: Abstraction has 138 states and 142 transitions. [2019-05-23 11:28:50,311 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:28:50,311 INFO L146 ILogger]: Start isEmpty. Operand 138 states and 142 transitions. [2019-05-23 11:28:50,315 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:28:50,315 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:50,316 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:50,316 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:50,316 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:50,316 INFO L146 ILogger]: Analyzing trace with hash -1124741697, now seen corresponding path program 1 times [2019-05-23 11:28:50,316 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:50,316 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:50,317 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:50,317 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:50,318 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:50,349 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:50,447 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:28:50,448 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:50,448 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 11:28:50,462 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:50,528 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:50,529 INFO L146 ILogger]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:50,535 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:50,651 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:28:50,671 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:50,671 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:28:50,671 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:28:50,672 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:28:50,672 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:28:50,672 INFO L146 ILogger]: Start difference. First operand 138 states and 142 transitions. Second operand 10 states. [2019-05-23 11:28:51,234 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:51,234 INFO L146 ILogger]: Finished difference Result 275 states and 284 transitions. [2019-05-23 11:28:51,235 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:28:51,235 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 137 [2019-05-23 11:28:51,236 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:51,237 INFO L146 ILogger]: With dead ends: 275 [2019-05-23 11:28:51,237 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:28:51,238 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:28:51,239 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:28:51,248 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 152. [2019-05-23 11:28:51,249 INFO L146 ILogger]: Start removeUnreachable. Operand 152 states. [2019-05-23 11:28:51,249 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 152 states to 152 states and 156 transitions. [2019-05-23 11:28:51,250 INFO L146 ILogger]: Start accepts. Automaton has 152 states and 156 transitions. Word has length 137 [2019-05-23 11:28:51,250 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:51,250 INFO L146 ILogger]: Abstraction has 152 states and 156 transitions. [2019-05-23 11:28:51,250 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:28:51,250 INFO L146 ILogger]: Start isEmpty. Operand 152 states and 156 transitions. [2019-05-23 11:28:51,253 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:28:51,253 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:51,253 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:51,253 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:51,254 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:51,254 INFO L146 ILogger]: Analyzing trace with hash -975484602, now seen corresponding path program 2 times [2019-05-23 11:28:51,254 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:51,254 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:51,255 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:51,255 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:51,256 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:51,305 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:51,473 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 11:28:51,473 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:51,473 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 11:28:51,481 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:28:51,543 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:28:51,543 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:51,544 INFO L146 ILogger]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:51,551 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:51,713 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-05-23 11:28:51,731 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:51,731 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-05-23 11:28:51,732 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:28:51,733 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:28:51,733 INFO L146 ILogger]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:28:51,733 INFO L146 ILogger]: Start difference. First operand 152 states and 156 transitions. Second operand 14 states. [2019-05-23 11:28:52,194 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:52,195 INFO L146 ILogger]: Finished difference Result 320 states and 331 transitions. [2019-05-23 11:28:52,195 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:28:52,196 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 151 [2019-05-23 11:28:52,196 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:52,198 INFO L146 ILogger]: With dead ends: 320 [2019-05-23 11:28:52,198 INFO L146 ILogger]: Without dead ends: 200 [2019-05-23 11:28:52,200 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:28:52,201 INFO L146 ILogger]: Start minimizeSevpa. Operand 200 states. [2019-05-23 11:28:52,209 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 200 to 180. [2019-05-23 11:28:52,210 INFO L146 ILogger]: Start removeUnreachable. Operand 180 states. [2019-05-23 11:28:52,211 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2019-05-23 11:28:52,212 INFO L146 ILogger]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 151 [2019-05-23 11:28:52,213 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:52,213 INFO L146 ILogger]: Abstraction has 180 states and 184 transitions. [2019-05-23 11:28:52,213 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:28:52,213 INFO L146 ILogger]: Start isEmpty. Operand 180 states and 184 transitions. [2019-05-23 11:28:52,215 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 180 [2019-05-23 11:28:52,216 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:52,216 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:52,216 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:52,217 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:52,217 INFO L146 ILogger]: Analyzing trace with hash 826407579, now seen corresponding path program 3 times [2019-05-23 11:28:52,217 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:52,217 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:52,220 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:52,221 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:52,221 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:52,284 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:52,645 INFO L146 ILogger]: Checked inductivity of 127 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:28:52,646 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:52,646 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 11:28:52,660 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:28:52,705 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:28:52,705 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:52,706 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:28:52,711 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:52,837 INFO L146 ILogger]: Checked inductivity of 127 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-05-23 11:28:52,855 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:52,855 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:28:52,856 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:28:52,856 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:28:52,857 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:28:52,857 INFO L146 ILogger]: Start difference. First operand 180 states and 184 transitions. Second operand 16 states. [2019-05-23 11:28:53,367 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:53,368 INFO L146 ILogger]: Finished difference Result 345 states and 354 transitions. [2019-05-23 11:28:53,370 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:28:53,370 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 179 [2019-05-23 11:28:53,370 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:53,372 INFO L146 ILogger]: With dead ends: 345 [2019-05-23 11:28:53,372 INFO L146 ILogger]: Without dead ends: 204 [2019-05-23 11:28:53,376 INFO L146 ILogger]: 0 DeclaredPredicates, 201 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:28:53,377 INFO L146 ILogger]: Start minimizeSevpa. Operand 204 states. [2019-05-23 11:28:53,387 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 204 to 194. [2019-05-23 11:28:53,387 INFO L146 ILogger]: Start removeUnreachable. Operand 194 states. [2019-05-23 11:28:53,388 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 194 states to 194 states and 198 transitions. [2019-05-23 11:28:53,388 INFO L146 ILogger]: Start accepts. Automaton has 194 states and 198 transitions. Word has length 179 [2019-05-23 11:28:53,388 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:53,389 INFO L146 ILogger]: Abstraction has 194 states and 198 transitions. [2019-05-23 11:28:53,389 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:28:53,389 INFO L146 ILogger]: Start isEmpty. Operand 194 states and 198 transitions. [2019-05-23 11:28:53,391 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 194 [2019-05-23 11:28:53,391 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:53,391 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:53,392 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:53,392 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:53,392 INFO L146 ILogger]: Analyzing trace with hash -1269375300, now seen corresponding path program 4 times [2019-05-23 11:28:53,392 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:53,392 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:53,393 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:53,393 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:53,394 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:53,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:53,687 INFO L146 ILogger]: Checked inductivity of 171 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:28:53,687 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:53,687 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 11:28:53,697 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:28:53,762 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:28:53,762 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:53,763 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:28:53,766 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:53,837 INFO L146 ILogger]: Checked inductivity of 171 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:28:53,856 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:53,856 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:28:53,857 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:28:53,857 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:28:53,857 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:28:53,858 INFO L146 ILogger]: Start difference. First operand 194 states and 198 transitions. Second operand 15 states. [2019-05-23 11:28:54,050 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:54,051 INFO L146 ILogger]: Finished difference Result 354 states and 362 transitions. [2019-05-23 11:28:54,058 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:28:54,058 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 193 [2019-05-23 11:28:54,058 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:54,059 INFO L146 ILogger]: With dead ends: 354 [2019-05-23 11:28:54,060 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:28:54,061 INFO L146 ILogger]: 0 DeclaredPredicates, 215 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:28:54,063 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:28:54,067 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 201. [2019-05-23 11:28:54,067 INFO L146 ILogger]: Start removeUnreachable. Operand 201 states. [2019-05-23 11:28:54,069 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 205 transitions. [2019-05-23 11:28:54,070 INFO L146 ILogger]: Start accepts. Automaton has 201 states and 205 transitions. Word has length 193 [2019-05-23 11:28:54,070 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:54,070 INFO L146 ILogger]: Abstraction has 201 states and 205 transitions. [2019-05-23 11:28:54,070 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:28:54,070 INFO L146 ILogger]: Start isEmpty. Operand 201 states and 205 transitions. [2019-05-23 11:28:54,072 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 201 [2019-05-23 11:28:54,073 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:54,073 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:54,073 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:54,073 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:54,074 INFO L146 ILogger]: Analyzing trace with hash -2060195022, now seen corresponding path program 5 times [2019-05-23 11:28:54,074 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:54,074 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:54,075 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:54,075 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:54,076 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:54,121 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:54,471 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2019-05-23 11:28:54,472 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:54,472 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:28:54,481 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:28:54,626 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:28:54,626 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:54,628 INFO L146 ILogger]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:28:54,630 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:54,780 INFO L146 ILogger]: Checked inductivity of 207 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-05-23 11:28:54,799 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:54,800 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:28:54,800 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:28:54,800 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:28:54,801 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:28:54,801 INFO L146 ILogger]: Start difference. First operand 201 states and 205 transitions. Second operand 22 states. [2019-05-23 11:28:55,412 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:55,413 INFO L146 ILogger]: Finished difference Result 397 states and 408 transitions. [2019-05-23 11:28:55,413 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:28:55,413 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 200 [2019-05-23 11:28:55,413 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:55,415 INFO L146 ILogger]: With dead ends: 397 [2019-05-23 11:28:55,415 INFO L146 ILogger]: Without dead ends: 249 [2019-05-23 11:28:55,416 INFO L146 ILogger]: 0 DeclaredPredicates, 232 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:28:55,417 INFO L146 ILogger]: Start minimizeSevpa. Operand 249 states. [2019-05-23 11:28:55,421 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 249 to 229. [2019-05-23 11:28:55,421 INFO L146 ILogger]: Start removeUnreachable. Operand 229 states. [2019-05-23 11:28:55,422 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 229 states to 229 states and 233 transitions. [2019-05-23 11:28:55,422 INFO L146 ILogger]: Start accepts. Automaton has 229 states and 233 transitions. Word has length 200 [2019-05-23 11:28:55,423 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:55,423 INFO L146 ILogger]: Abstraction has 229 states and 233 transitions. [2019-05-23 11:28:55,423 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:28:55,423 INFO L146 ILogger]: Start isEmpty. Operand 229 states and 233 transitions. [2019-05-23 11:28:55,425 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 229 [2019-05-23 11:28:55,426 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:55,426 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:28:55,426 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:55,426 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:55,427 INFO L146 ILogger]: Analyzing trace with hash -1969332747, now seen corresponding path program 6 times [2019-05-23 11:28:55,427 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:55,427 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:55,428 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:55,428 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:55,428 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:55,451 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:55,696 INFO L146 ILogger]: Checked inductivity of 316 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:28:55,696 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:55,696 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:28:55,714 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:28:55,867 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:28:55,867 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:55,869 INFO L146 ILogger]: Trace formula consists of 312 conjuncts, 34 conjunts are in the unsatisfiable core [2019-05-23 11:28:55,873 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:56,495 INFO L146 ILogger]: Checked inductivity of 316 backedges. 87 proven. 24 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2019-05-23 11:28:56,516 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:56,516 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2019-05-23 11:28:56,517 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:28:56,517 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:28:56,520 INFO L146 ILogger]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:28:56,520 INFO L146 ILogger]: Start difference. First operand 229 states and 233 transitions. Second operand 36 states. [2019-05-23 11:28:57,369 WARN L146 ILogger]: Spent 135.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2019-05-23 11:28:59,160 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:59,161 INFO L146 ILogger]: Finished difference Result 422 states and 431 transitions. [2019-05-23 11:28:59,161 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:28:59,161 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 228 [2019-05-23 11:28:59,162 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:59,163 INFO L146 ILogger]: With dead ends: 422 [2019-05-23 11:28:59,163 INFO L146 ILogger]: Without dead ends: 253 [2019-05-23 11:28:59,166 INFO L146 ILogger]: 0 DeclaredPredicates, 289 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=895, Invalid=4805, Unknown=0, NotChecked=0, Total=5700 [2019-05-23 11:28:59,167 INFO L146 ILogger]: Start minimizeSevpa. Operand 253 states. [2019-05-23 11:28:59,172 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 253 to 243. [2019-05-23 11:28:59,172 INFO L146 ILogger]: Start removeUnreachable. Operand 243 states. [2019-05-23 11:28:59,173 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 243 states to 243 states and 247 transitions. [2019-05-23 11:28:59,173 INFO L146 ILogger]: Start accepts. Automaton has 243 states and 247 transitions. Word has length 228 [2019-05-23 11:28:59,173 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:59,173 INFO L146 ILogger]: Abstraction has 243 states and 247 transitions. [2019-05-23 11:28:59,173 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:28:59,174 INFO L146 ILogger]: Start isEmpty. Operand 243 states and 247 transitions. [2019-05-23 11:28:59,175 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 243 [2019-05-23 11:28:59,175 INFO L146 ILogger]: Found error trace [2019-05-23 11:28:59,175 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:28:59,175 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:28:59,176 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:28:59,176 INFO L146 ILogger]: Analyzing trace with hash 1904402492, now seen corresponding path program 7 times [2019-05-23 11:28:59,176 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:28:59,176 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:28:59,177 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:59,177 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:28:59,177 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:28:59,213 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:59,486 INFO L146 ILogger]: Checked inductivity of 388 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:28:59,487 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:28:59,487 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 11:28:59,495 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:28:59,547 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:28:59,549 INFO L146 ILogger]: Trace formula consists of 372 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:28:59,552 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:28:59,630 INFO L146 ILogger]: Checked inductivity of 388 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:28:59,657 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:28:59,658 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:28:59,658 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:28:59,661 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:28:59,662 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:28:59,662 INFO L146 ILogger]: Start difference. First operand 243 states and 247 transitions. Second operand 21 states. [2019-05-23 11:28:59,985 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:28:59,986 INFO L146 ILogger]: Finished difference Result 431 states and 439 transitions. [2019-05-23 11:28:59,986 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:28:59,986 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 242 [2019-05-23 11:28:59,986 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:28:59,988 INFO L146 ILogger]: With dead ends: 431 [2019-05-23 11:28:59,989 INFO L146 ILogger]: Without dead ends: 255 [2019-05-23 11:28:59,990 INFO L146 ILogger]: 0 DeclaredPredicates, 276 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:28:59,990 INFO L146 ILogger]: Start minimizeSevpa. Operand 255 states. [2019-05-23 11:28:59,996 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 255 to 250. [2019-05-23 11:28:59,997 INFO L146 ILogger]: Start removeUnreachable. Operand 250 states. [2019-05-23 11:28:59,997 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 250 states to 250 states and 254 transitions. [2019-05-23 11:28:59,998 INFO L146 ILogger]: Start accepts. Automaton has 250 states and 254 transitions. Word has length 242 [2019-05-23 11:28:59,998 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:28:59,998 INFO L146 ILogger]: Abstraction has 250 states and 254 transitions. [2019-05-23 11:28:59,998 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:28:59,998 INFO L146 ILogger]: Start isEmpty. Operand 250 states and 254 transitions. [2019-05-23 11:28:59,999 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 250 [2019-05-23 11:29:00,000 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:00,001 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:00,001 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:00,001 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:00,002 INFO L146 ILogger]: Analyzing trace with hash 1648486022, now seen corresponding path program 8 times [2019-05-23 11:29:00,002 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:00,002 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:00,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:00,003 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:00,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:00,030 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:00,698 INFO L146 ILogger]: Checked inductivity of 445 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:00,698 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:00,698 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 11:29:00,707 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:00,786 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:00,786 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:00,789 INFO L146 ILogger]: Trace formula consists of 382 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:29:00,794 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:00,945 INFO L146 ILogger]: Checked inductivity of 445 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:00,964 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:00,965 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:29:00,965 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:29:00,965 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:29:00,966 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:29:00,966 INFO L146 ILogger]: Start difference. First operand 250 states and 254 transitions. Second operand 23 states. [2019-05-23 11:29:01,392 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:01,392 INFO L146 ILogger]: Finished difference Result 438 states and 446 transitions. [2019-05-23 11:29:01,394 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:29:01,394 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 249 [2019-05-23 11:29:01,394 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:01,396 INFO L146 ILogger]: With dead ends: 438 [2019-05-23 11:29:01,396 INFO L146 ILogger]: Without dead ends: 262 [2019-05-23 11:29:01,397 INFO L146 ILogger]: 0 DeclaredPredicates, 287 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:29:01,397 INFO L146 ILogger]: Start minimizeSevpa. Operand 262 states. [2019-05-23 11:29:01,403 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 262 to 257. [2019-05-23 11:29:01,403 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:29:01,404 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 261 transitions. [2019-05-23 11:29:01,404 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 261 transitions. Word has length 249 [2019-05-23 11:29:01,404 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:01,404 INFO L146 ILogger]: Abstraction has 257 states and 261 transitions. [2019-05-23 11:29:01,405 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:29:01,405 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 261 transitions. [2019-05-23 11:29:01,406 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 257 [2019-05-23 11:29:01,406 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:01,406 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:01,407 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:01,407 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:01,407 INFO L146 ILogger]: Analyzing trace with hash 986126588, now seen corresponding path program 9 times [2019-05-23 11:29:01,407 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:01,407 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:01,408 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:01,408 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:01,409 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:01,437 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:02,609 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-05-23 11:29:02,609 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:02,610 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 11:29:02,618 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:02,695 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:29:02,695 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:02,696 INFO L146 ILogger]: Trace formula consists of 332 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:29:02,699 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:02,993 INFO L146 ILogger]: Checked inductivity of 509 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:29:03,013 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:03,013 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 32 [2019-05-23 11:29:03,014 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:29:03,014 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:29:03,014 INFO L146 ILogger]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:29:03,015 INFO L146 ILogger]: Start difference. First operand 257 states and 261 transitions. Second operand 32 states. [2019-05-23 11:29:05,870 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:05,871 INFO L146 ILogger]: Finished difference Result 481 states and 492 transitions. [2019-05-23 11:29:05,871 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-05-23 11:29:05,871 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 256 [2019-05-23 11:29:05,872 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:05,874 INFO L146 ILogger]: With dead ends: 481 [2019-05-23 11:29:05,874 INFO L146 ILogger]: Without dead ends: 305 [2019-05-23 11:29:05,876 INFO L146 ILogger]: 0 DeclaredPredicates, 314 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=725, Invalid=2815, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:29:05,876 INFO L146 ILogger]: Start minimizeSevpa. Operand 305 states. [2019-05-23 11:29:05,881 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 305 to 285. [2019-05-23 11:29:05,881 INFO L146 ILogger]: Start removeUnreachable. Operand 285 states. [2019-05-23 11:29:05,882 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 285 states to 285 states and 289 transitions. [2019-05-23 11:29:05,882 INFO L146 ILogger]: Start accepts. Automaton has 285 states and 289 transitions. Word has length 256 [2019-05-23 11:29:05,883 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:05,883 INFO L146 ILogger]: Abstraction has 285 states and 289 transitions. [2019-05-23 11:29:05,883 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:29:05,883 INFO L146 ILogger]: Start isEmpty. Operand 285 states and 289 transitions. [2019-05-23 11:29:05,884 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:29:05,884 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:05,885 INFO L146 ILogger]: trace histogram [11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:05,885 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:05,885 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:05,885 INFO L146 ILogger]: Analyzing trace with hash 947145873, now seen corresponding path program 10 times [2019-05-23 11:29:05,885 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:05,886 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:05,886 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:05,886 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:05,887 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:05,911 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:07,007 INFO L146 ILogger]: Checked inductivity of 667 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:29:07,008 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:07,008 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 11:29:07,034 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:07,246 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:07,246 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:07,249 INFO L146 ILogger]: Trace formula consists of 432 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:29:07,254 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:07,386 INFO L146 ILogger]: Checked inductivity of 667 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:29:07,406 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:07,406 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2019-05-23 11:29:07,407 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:29:07,407 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:29:07,407 INFO L146 ILogger]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2019-05-23 11:29:07,407 INFO L146 ILogger]: Start difference. First operand 285 states and 289 transitions. Second operand 27 states. [2019-05-23 11:29:08,186 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:08,187 INFO L146 ILogger]: Finished difference Result 494 states and 502 transitions. [2019-05-23 11:29:08,187 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-05-23 11:29:08,187 INFO L146 ILogger]: Start accepts. Automaton has 27 states. Word has length 284 [2019-05-23 11:29:08,187 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:08,189 INFO L146 ILogger]: With dead ends: 494 [2019-05-23 11:29:08,189 INFO L146 ILogger]: Without dead ends: 297 [2019-05-23 11:29:08,190 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:29:08,191 INFO L146 ILogger]: Start minimizeSevpa. Operand 297 states. [2019-05-23 11:29:08,196 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 297 to 292. [2019-05-23 11:29:08,196 INFO L146 ILogger]: Start removeUnreachable. Operand 292 states. [2019-05-23 11:29:08,197 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 292 states to 292 states and 296 transitions. [2019-05-23 11:29:08,197 INFO L146 ILogger]: Start accepts. Automaton has 292 states and 296 transitions. Word has length 284 [2019-05-23 11:29:08,198 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:08,199 INFO L146 ILogger]: Abstraction has 292 states and 296 transitions. [2019-05-23 11:29:08,199 INFO L146 ILogger]: Interpolant automaton has 27 states. [2019-05-23 11:29:08,199 INFO L146 ILogger]: Start isEmpty. Operand 292 states and 296 transitions. [2019-05-23 11:29:08,201 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 292 [2019-05-23 11:29:08,201 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:08,201 INFO L146 ILogger]: trace histogram [12, 12, 12, 12, 12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:08,201 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:08,201 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:08,202 INFO L146 ILogger]: Analyzing trace with hash -1745496485, now seen corresponding path program 11 times [2019-05-23 11:29:08,202 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:08,202 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:08,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,203 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:08,203 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:08,251 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:08,711 INFO L146 ILogger]: Checked inductivity of 745 backedges. 0 proven. 474 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2019-05-23 11:29:08,712 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:08,712 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 11:29:08,720 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:08,958 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-05-23 11:29:08,958 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:08,965 INFO L146 ILogger]: Trace formula consists of 442 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:08,967 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:09,249 INFO L146 ILogger]: Checked inductivity of 745 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2019-05-23 11:29:09,268 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:09,269 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 38 [2019-05-23 11:29:09,269 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:29:09,270 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:29:09,270 INFO L146 ILogger]: CoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:29:09,270 INFO L146 ILogger]: Start difference. First operand 292 states and 296 transitions. Second operand 38 states. [2019-05-23 11:29:10,338 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:10,339 INFO L146 ILogger]: Finished difference Result 537 states and 548 transitions. [2019-05-23 11:29:10,339 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:29:10,339 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 291 [2019-05-23 11:29:10,340 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:10,342 INFO L146 ILogger]: With dead ends: 537 [2019-05-23 11:29:10,342 INFO L146 ILogger]: Without dead ends: 340 [2019-05-23 11:29:10,344 INFO L146 ILogger]: 0 DeclaredPredicates, 361 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1020, Invalid=4092, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:29:10,345 INFO L146 ILogger]: Start minimizeSevpa. Operand 340 states. [2019-05-23 11:29:10,351 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 340 to 320. [2019-05-23 11:29:10,351 INFO L146 ILogger]: Start removeUnreachable. Operand 320 states. [2019-05-23 11:29:10,352 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 320 states to 320 states and 324 transitions. [2019-05-23 11:29:10,352 INFO L146 ILogger]: Start accepts. Automaton has 320 states and 324 transitions. Word has length 291 [2019-05-23 11:29:10,352 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:10,352 INFO L146 ILogger]: Abstraction has 320 states and 324 transitions. [2019-05-23 11:29:10,353 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:29:10,353 INFO L146 ILogger]: Start isEmpty. Operand 320 states and 324 transitions. [2019-05-23 11:29:10,354 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 320 [2019-05-23 11:29:10,354 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:10,355 INFO L146 ILogger]: trace histogram [13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:10,355 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:10,355 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:10,355 INFO L146 ILogger]: Analyzing trace with hash -1559080090, now seen corresponding path program 12 times [2019-05-23 11:29:10,355 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:10,356 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:10,356 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,356 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:10,356 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,379 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:12,065 INFO L146 ILogger]: Checked inductivity of 938 backedges. 0 proven. 559 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2019-05-23 11:29:12,065 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:12,065 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 11:29:12,074 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:12,370 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:29:12,370 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:12,374 INFO L146 ILogger]: Trace formula consists of 372 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:29:12,378 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:12,578 INFO L146 ILogger]: Checked inductivity of 938 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2019-05-23 11:29:12,597 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:12,598 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 11] total 38 [2019-05-23 11:29:12,598 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:29:12,599 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:29:12,600 INFO L146 ILogger]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:29:12,600 INFO L146 ILogger]: Start difference. First operand 320 states and 324 transitions. Second operand 38 states. [2019-05-23 11:29:14,014 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:14,014 INFO L146 ILogger]: Finished difference Result 562 states and 571 transitions. [2019-05-23 11:29:14,019 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2019-05-23 11:29:14,019 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 319 [2019-05-23 11:29:14,020 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:14,021 INFO L146 ILogger]: With dead ends: 562 [2019-05-23 11:29:14,021 INFO L146 ILogger]: Without dead ends: 344 [2019-05-23 11:29:14,023 INFO L146 ILogger]: 0 DeclaredPredicates, 381 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 954 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1100, Invalid=4012, Unknown=0, NotChecked=0, Total=5112 [2019-05-23 11:29:14,024 INFO L146 ILogger]: Start minimizeSevpa. Operand 344 states. [2019-05-23 11:29:14,030 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 344 to 334. [2019-05-23 11:29:14,030 INFO L146 ILogger]: Start removeUnreachable. Operand 334 states. [2019-05-23 11:29:14,031 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 334 states to 334 states and 338 transitions. [2019-05-23 11:29:14,031 INFO L146 ILogger]: Start accepts. Automaton has 334 states and 338 transitions. Word has length 319 [2019-05-23 11:29:14,032 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:14,032 INFO L146 ILogger]: Abstraction has 334 states and 338 transitions. [2019-05-23 11:29:14,032 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:29:14,032 INFO L146 ILogger]: Start isEmpty. Operand 334 states and 338 transitions. [2019-05-23 11:29:14,034 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 334 [2019-05-23 11:29:14,034 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:14,034 INFO L146 ILogger]: trace histogram [14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:14,035 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:14,035 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:14,035 INFO L146 ILogger]: Analyzing trace with hash 246463935, now seen corresponding path program 13 times [2019-05-23 11:29:14,035 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:14,035 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:14,036 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:14,036 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:14,037 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:14,063 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:15,205 INFO L146 ILogger]: Checked inductivity of 1059 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:15,206 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:15,206 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 11:29:15,215 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:15,292 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:15,294 INFO L146 ILogger]: Trace formula consists of 502 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:29:15,298 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:15,386 INFO L146 ILogger]: Checked inductivity of 1059 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:15,405 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:15,405 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2019-05-23 11:29:15,406 INFO L146 ILogger]: Interpolant automaton has 33 states [2019-05-23 11:29:15,406 INFO L146 ILogger]: Constructing interpolant automaton starting with 33 interpolants. [2019-05-23 11:29:15,406 INFO L146 ILogger]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:29:15,407 INFO L146 ILogger]: Start difference. First operand 334 states and 338 transitions. Second operand 33 states. [2019-05-23 11:29:15,985 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:15,986 INFO L146 ILogger]: Finished difference Result 571 states and 579 transitions. [2019-05-23 11:29:15,986 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:29:15,986 INFO L146 ILogger]: Start accepts. Automaton has 33 states. Word has length 333 [2019-05-23 11:29:15,986 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:15,988 INFO L146 ILogger]: With dead ends: 571 [2019-05-23 11:29:15,988 INFO L146 ILogger]: Without dead ends: 346 [2019-05-23 11:29:15,990 INFO L146 ILogger]: 0 DeclaredPredicates, 391 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2019-05-23 11:29:15,991 INFO L146 ILogger]: Start minimizeSevpa. Operand 346 states. [2019-05-23 11:29:15,996 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 346 to 341. [2019-05-23 11:29:15,997 INFO L146 ILogger]: Start removeUnreachable. Operand 341 states. [2019-05-23 11:29:15,997 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 341 states to 341 states and 345 transitions. [2019-05-23 11:29:15,997 INFO L146 ILogger]: Start accepts. Automaton has 341 states and 345 transitions. Word has length 333 [2019-05-23 11:29:15,998 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:15,998 INFO L146 ILogger]: Abstraction has 341 states and 345 transitions. [2019-05-23 11:29:15,998 INFO L146 ILogger]: Interpolant automaton has 33 states. [2019-05-23 11:29:15,998 INFO L146 ILogger]: Start isEmpty. Operand 341 states and 345 transitions. [2019-05-23 11:29:16,000 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 341 [2019-05-23 11:29:16,000 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:16,001 INFO L146 ILogger]: trace histogram [15, 15, 15, 15, 15, 15, 15, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:16,001 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:16,001 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:16,002 INFO L146 ILogger]: Analyzing trace with hash -1089246923, now seen corresponding path program 14 times [2019-05-23 11:29:16,002 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:16,002 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:16,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:16,003 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:16,003 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:16,027 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:17,186 INFO L146 ILogger]: Checked inductivity of 1158 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:17,187 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:17,187 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 11:29:17,195 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:17,270 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:17,271 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:17,272 INFO L146 ILogger]: Trace formula consists of 512 conjuncts, 32 conjunts are in the unsatisfiable core [2019-05-23 11:29:17,276 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:17,992 INFO L146 ILogger]: Checked inductivity of 1158 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:18,025 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:18,025 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2019-05-23 11:29:18,026 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:29:18,026 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:29:18,027 INFO L146 ILogger]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:29:18,027 INFO L146 ILogger]: Start difference. First operand 341 states and 345 transitions. Second operand 35 states. [2019-05-23 11:29:18,839 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:18,839 INFO L146 ILogger]: Finished difference Result 578 states and 586 transitions. [2019-05-23 11:29:18,840 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-05-23 11:29:18,840 INFO L146 ILogger]: Start accepts. Automaton has 35 states. Word has length 340 [2019-05-23 11:29:18,840 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:18,842 INFO L146 ILogger]: With dead ends: 578 [2019-05-23 11:29:18,842 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:29:18,844 INFO L146 ILogger]: 0 DeclaredPredicates, 402 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:29:18,845 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:29:18,850 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 348. [2019-05-23 11:29:18,850 INFO L146 ILogger]: Start removeUnreachable. Operand 348 states. [2019-05-23 11:29:18,850 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 348 states to 348 states and 352 transitions. [2019-05-23 11:29:18,851 INFO L146 ILogger]: Start accepts. Automaton has 348 states and 352 transitions. Word has length 340 [2019-05-23 11:29:18,851 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:18,851 INFO L146 ILogger]: Abstraction has 348 states and 352 transitions. [2019-05-23 11:29:18,851 INFO L146 ILogger]: Interpolant automaton has 35 states. [2019-05-23 11:29:18,851 INFO L146 ILogger]: Start isEmpty. Operand 348 states and 352 transitions. [2019-05-23 11:29:18,853 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 348 [2019-05-23 11:29:18,853 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:18,853 INFO L146 ILogger]: trace histogram [16, 16, 16, 16, 16, 16, 16, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:18,854 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:18,854 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:18,854 INFO L146 ILogger]: Analyzing trace with hash -2026566401, now seen corresponding path program 15 times [2019-05-23 11:29:18,854 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:18,854 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:18,855 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:18,855 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:18,855 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:18,880 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:19,510 INFO L146 ILogger]: Checked inductivity of 1264 backedges. 0 proven. 856 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2019-05-23 11:29:19,510 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:19,510 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 11:29:19,520 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:19,702 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:29:19,702 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:19,704 INFO L146 ILogger]: Trace formula consists of 382 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:19,708 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:20,021 INFO L146 ILogger]: Checked inductivity of 1264 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1189 trivial. 0 not checked. [2019-05-23 11:29:20,040 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:20,041 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 13] total 46 [2019-05-23 11:29:20,041 INFO L146 ILogger]: Interpolant automaton has 46 states [2019-05-23 11:29:20,041 INFO L146 ILogger]: Constructing interpolant automaton starting with 46 interpolants. [2019-05-23 11:29:20,042 INFO L146 ILogger]: CoverageRelationStatistics Valid=370, Invalid=1700, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:29:20,042 INFO L146 ILogger]: Start difference. First operand 348 states and 352 transitions. Second operand 46 states. [2019-05-23 11:29:21,144 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:21,145 INFO L146 ILogger]: Finished difference Result 597 states and 606 transitions. [2019-05-23 11:29:21,149 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-05-23 11:29:21,149 INFO L146 ILogger]: Start accepts. Automaton has 46 states. Word has length 347 [2019-05-23 11:29:21,149 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:21,151 INFO L146 ILogger]: With dead ends: 597 [2019-05-23 11:29:21,151 INFO L146 ILogger]: Without dead ends: 372 [2019-05-23 11:29:21,154 INFO L146 ILogger]: 0 DeclaredPredicates, 423 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1462 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1620, Invalid=6036, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:29:21,155 INFO L146 ILogger]: Start minimizeSevpa. Operand 372 states. [2019-05-23 11:29:21,161 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 372 to 362. [2019-05-23 11:29:21,162 INFO L146 ILogger]: Start removeUnreachable. Operand 362 states. [2019-05-23 11:29:21,162 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 362 states to 362 states and 366 transitions. [2019-05-23 11:29:21,163 INFO L146 ILogger]: Start accepts. Automaton has 362 states and 366 transitions. Word has length 347 [2019-05-23 11:29:21,163 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:21,163 INFO L146 ILogger]: Abstraction has 362 states and 366 transitions. [2019-05-23 11:29:21,163 INFO L146 ILogger]: Interpolant automaton has 46 states. [2019-05-23 11:29:21,163 INFO L146 ILogger]: Start isEmpty. Operand 362 states and 366 transitions. [2019-05-23 11:29:21,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 362 [2019-05-23 11:29:21,167 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:21,167 INFO L146 ILogger]: trace histogram [17, 17, 17, 17, 17, 17, 17, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:21,168 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:21,168 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:21,168 INFO L146 ILogger]: Analyzing trace with hash 760365830, now seen corresponding path program 16 times [2019-05-23 11:29:21,168 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:21,169 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:21,169 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:21,169 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:21,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:21,199 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:21,825 INFO L146 ILogger]: Checked inductivity of 1413 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:21,825 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:21,825 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:21,842 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:22,168 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:22,168 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:22,171 INFO L146 ILogger]: Trace formula consists of 542 conjuncts, 36 conjunts are in the unsatisfiable core [2019-05-23 11:29:22,176 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:22,289 INFO L146 ILogger]: Checked inductivity of 1413 backedges. 0 proven. 969 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:22,309 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:22,309 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2019-05-23 11:29:22,310 INFO L146 ILogger]: Interpolant automaton has 39 states [2019-05-23 11:29:22,310 INFO L146 ILogger]: Constructing interpolant automaton starting with 39 interpolants. [2019-05-23 11:29:22,311 INFO L146 ILogger]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2019-05-23 11:29:22,311 INFO L146 ILogger]: Start difference. First operand 362 states and 366 transitions. Second operand 39 states. [2019-05-23 11:29:23,306 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:23,306 INFO L146 ILogger]: Finished difference Result 606 states and 614 transitions. [2019-05-23 11:29:23,306 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-05-23 11:29:23,306 INFO L146 ILogger]: Start accepts. Automaton has 39 states. Word has length 361 [2019-05-23 11:29:23,307 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:23,308 INFO L146 ILogger]: With dead ends: 606 [2019-05-23 11:29:23,308 INFO L146 ILogger]: Without dead ends: 374 [2019-05-23 11:29:23,310 INFO L146 ILogger]: 0 DeclaredPredicates, 431 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2019-05-23 11:29:23,310 INFO L146 ILogger]: Start minimizeSevpa. Operand 374 states. [2019-05-23 11:29:23,314 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 374 to 369. [2019-05-23 11:29:23,314 INFO L146 ILogger]: Start removeUnreachable. Operand 369 states. [2019-05-23 11:29:23,315 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 369 states to 369 states and 373 transitions. [2019-05-23 11:29:23,315 INFO L146 ILogger]: Start accepts. Automaton has 369 states and 373 transitions. Word has length 361 [2019-05-23 11:29:23,316 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:23,316 INFO L146 ILogger]: Abstraction has 369 states and 373 transitions. [2019-05-23 11:29:23,316 INFO L146 ILogger]: Interpolant automaton has 39 states. [2019-05-23 11:29:23,316 INFO L146 ILogger]: Start isEmpty. Operand 369 states and 373 transitions. [2019-05-23 11:29:23,318 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 369 [2019-05-23 11:29:23,318 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:23,318 INFO L146 ILogger]: trace histogram [18, 18, 18, 18, 18, 18, 18, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:23,319 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:23,319 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:23,319 INFO L146 ILogger]: Analyzing trace with hash -1087782532, now seen corresponding path program 17 times [2019-05-23 11:29:23,319 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:23,319 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:23,320 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:23,320 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:23,320 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:23,355 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:24,873 INFO L146 ILogger]: Checked inductivity of 1533 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:24,874 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:24,874 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:24,883 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:25,904 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-05-23 11:29:25,905 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:25,908 INFO L146 ILogger]: Trace formula consists of 552 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:29:25,912 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:26,273 INFO L146 ILogger]: Checked inductivity of 1533 backedges. 0 proven. 1089 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:26,293 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:26,293 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2019-05-23 11:29:26,293 INFO L146 ILogger]: Interpolant automaton has 41 states [2019-05-23 11:29:26,294 INFO L146 ILogger]: Constructing interpolant automaton starting with 41 interpolants. [2019-05-23 11:29:26,294 INFO L146 ILogger]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:29:26,294 INFO L146 ILogger]: Start difference. First operand 369 states and 373 transitions. Second operand 41 states. [2019-05-23 11:29:27,174 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:27,174 INFO L146 ILogger]: Finished difference Result 613 states and 621 transitions. [2019-05-23 11:29:27,174 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-05-23 11:29:27,174 INFO L146 ILogger]: Start accepts. Automaton has 41 states. Word has length 368 [2019-05-23 11:29:27,175 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:27,176 INFO L146 ILogger]: With dead ends: 613 [2019-05-23 11:29:27,176 INFO L146 ILogger]: Without dead ends: 381 [2019-05-23 11:29:27,178 INFO L146 ILogger]: 0 DeclaredPredicates, 442 GetRequests, 367 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2019-05-23 11:29:27,178 INFO L146 ILogger]: Start minimizeSevpa. Operand 381 states. [2019-05-23 11:29:27,183 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 381 to 376. [2019-05-23 11:29:27,183 INFO L146 ILogger]: Start removeUnreachable. Operand 376 states. [2019-05-23 11:29:27,184 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 376 states to 376 states and 380 transitions. [2019-05-23 11:29:27,184 INFO L146 ILogger]: Start accepts. Automaton has 376 states and 380 transitions. Word has length 368 [2019-05-23 11:29:27,184 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:27,184 INFO L146 ILogger]: Abstraction has 376 states and 380 transitions. [2019-05-23 11:29:27,184 INFO L146 ILogger]: Interpolant automaton has 41 states. [2019-05-23 11:29:27,185 INFO L146 ILogger]: Start isEmpty. Operand 376 states and 380 transitions. [2019-05-23 11:29:27,186 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 376 [2019-05-23 11:29:27,186 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:27,187 INFO L146 ILogger]: trace histogram [19, 19, 19, 19, 19, 19, 19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:27,187 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:27,187 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:27,187 INFO L146 ILogger]: Analyzing trace with hash 1934832198, now seen corresponding path program 18 times [2019-05-23 11:29:27,188 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:27,188 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:27,188 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:27,188 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:27,189 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:27,214 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:27,883 INFO L146 ILogger]: Checked inductivity of 1660 backedges. 0 proven. 1216 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-05-23 11:29:27,883 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:27,884 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:27,893 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:28,484 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-05-23 11:29:28,484 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:28,486 INFO L146 ILogger]: Trace formula consists of 492 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:29:28,489 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:28,880 INFO L146 ILogger]: Checked inductivity of 1660 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1549 trivial. 0 not checked. [2019-05-23 11:29:28,900 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:28,900 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 15] total 54 [2019-05-23 11:29:28,900 INFO L146 ILogger]: Interpolant automaton has 54 states [2019-05-23 11:29:28,901 INFO L146 ILogger]: Constructing interpolant automaton starting with 54 interpolants. [2019-05-23 11:29:28,901 INFO L146 ILogger]: CoverageRelationStatistics Valid=502, Invalid=2360, Unknown=0, NotChecked=0, Total=2862 [2019-05-23 11:29:28,901 INFO L146 ILogger]: Start difference. First operand 376 states and 380 transitions. Second operand 54 states. [2019-05-23 11:29:31,364 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:31,364 INFO L146 ILogger]: Finished difference Result 656 states and 667 transitions. [2019-05-23 11:29:31,365 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2019-05-23 11:29:31,365 INFO L146 ILogger]: Start accepts. Automaton has 54 states. Word has length 375 [2019-05-23 11:29:31,365 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:31,368 INFO L146 ILogger]: With dead ends: 656 [2019-05-23 11:29:31,368 INFO L146 ILogger]: Without dead ends: 424 [2019-05-23 11:29:31,369 INFO L146 ILogger]: 0 DeclaredPredicates, 477 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2078 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2240, Invalid=8472, Unknown=0, NotChecked=0, Total=10712 [2019-05-23 11:29:31,370 INFO L146 ILogger]: Start minimizeSevpa. Operand 424 states. [2019-05-23 11:29:31,376 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 424 to 404. [2019-05-23 11:29:31,376 INFO L146 ILogger]: Start removeUnreachable. Operand 404 states. [2019-05-23 11:29:31,377 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 404 states to 404 states and 408 transitions. [2019-05-23 11:29:31,377 INFO L146 ILogger]: Start accepts. Automaton has 404 states and 408 transitions. Word has length 375 [2019-05-23 11:29:31,378 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:31,378 INFO L146 ILogger]: Abstraction has 404 states and 408 transitions. [2019-05-23 11:29:31,378 INFO L146 ILogger]: Interpolant automaton has 54 states. [2019-05-23 11:29:31,378 INFO L146 ILogger]: Start isEmpty. Operand 404 states and 408 transitions. [2019-05-23 11:29:31,380 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 404 [2019-05-23 11:29:31,380 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:31,380 INFO L146 ILogger]: trace histogram [20, 20, 20, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:31,381 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:31,381 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:31,381 INFO L146 ILogger]: Analyzing trace with hash 313561627, now seen corresponding path program 19 times [2019-05-23 11:29:31,381 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:31,381 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:31,382 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,382 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:31,382 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,409 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,152 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:32,152 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:32,152 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:32,160 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:32,248 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,250 INFO L146 ILogger]: Trace formula consists of 602 conjuncts, 42 conjunts are in the unsatisfiable core [2019-05-23 11:29:32,254 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:32,469 INFO L146 ILogger]: Checked inductivity of 1923 backedges. 0 proven. 1350 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:32,499 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:32,499 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2019-05-23 11:29:32,500 INFO L146 ILogger]: Interpolant automaton has 45 states [2019-05-23 11:29:32,500 INFO L146 ILogger]: Constructing interpolant automaton starting with 45 interpolants. [2019-05-23 11:29:32,501 INFO L146 ILogger]: CoverageRelationStatistics Valid=528, Invalid=1452, Unknown=0, NotChecked=0, Total=1980 [2019-05-23 11:29:32,501 INFO L146 ILogger]: Start difference. First operand 404 states and 408 transitions. Second operand 45 states. [2019-05-23 11:29:34,022 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:34,022 INFO L146 ILogger]: Finished difference Result 669 states and 677 transitions. [2019-05-23 11:29:34,024 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-05-23 11:29:34,025 INFO L146 ILogger]: Start accepts. Automaton has 45 states. Word has length 403 [2019-05-23 11:29:34,025 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:34,026 INFO L146 ILogger]: With dead ends: 669 [2019-05-23 11:29:34,026 INFO L146 ILogger]: Without dead ends: 416 [2019-05-23 11:29:34,027 INFO L146 ILogger]: 0 DeclaredPredicates, 485 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2251, Invalid=4889, Unknown=0, NotChecked=0, Total=7140 [2019-05-23 11:29:34,028 INFO L146 ILogger]: Start minimizeSevpa. Operand 416 states. [2019-05-23 11:29:34,033 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 416 to 411. [2019-05-23 11:29:34,034 INFO L146 ILogger]: Start removeUnreachable. Operand 411 states. [2019-05-23 11:29:34,035 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 411 states to 411 states and 415 transitions. [2019-05-23 11:29:34,035 INFO L146 ILogger]: Start accepts. Automaton has 411 states and 415 transitions. Word has length 403 [2019-05-23 11:29:34,035 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:34,035 INFO L146 ILogger]: Abstraction has 411 states and 415 transitions. [2019-05-23 11:29:34,035 INFO L146 ILogger]: Interpolant automaton has 45 states. [2019-05-23 11:29:34,035 INFO L146 ILogger]: Start isEmpty. Operand 411 states and 415 transitions. [2019-05-23 11:29:34,037 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 411 [2019-05-23 11:29:34,038 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:34,038 INFO L146 ILogger]: trace histogram [21, 21, 21, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:34,038 INFO L146 ILogger]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:34,038 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:34,039 INFO L146 ILogger]: Analyzing trace with hash 1215536401, now seen corresponding path program 20 times [2019-05-23 11:29:34,039 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:34,039 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:34,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,040 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:34,040 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,067 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:34,925 INFO L146 ILogger]: Checked inductivity of 2064 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:34,926 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:34,926 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:34,935 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:35,035 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:35,035 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,038 INFO L146 ILogger]: Trace formula consists of 612 conjuncts, 44 conjunts are in the unsatisfiable core [2019-05-23 11:29:35,042 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:35,538 INFO L146 ILogger]: Checked inductivity of 2064 backedges. 0 proven. 1491 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:35,557 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:35,557 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2019-05-23 11:29:35,558 INFO L146 ILogger]: Interpolant automaton has 47 states [2019-05-23 11:29:35,558 INFO L146 ILogger]: Constructing interpolant automaton starting with 47 interpolants. [2019-05-23 11:29:35,558 INFO L146 ILogger]: CoverageRelationStatistics Valid=575, Invalid=1587, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:29:35,559 INFO L146 ILogger]: Start difference. First operand 411 states and 415 transitions. Second operand 47 states. [2019-05-23 11:29:36,692 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,692 INFO L146 ILogger]: Finished difference Result 676 states and 684 transitions. [2019-05-23 11:29:36,693 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2019-05-23 11:29:36,693 INFO L146 ILogger]: Start accepts. Automaton has 47 states. Word has length 410 [2019-05-23 11:29:36,693 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,694 INFO L146 ILogger]: With dead ends: 676 [2019-05-23 11:29:36,694 INFO L146 ILogger]: Without dead ends: 423 [2019-05-23 11:29:36,696 INFO L146 ILogger]: 0 DeclaredPredicates, 496 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2468, Invalid=5364, Unknown=0, NotChecked=0, Total=7832 [2019-05-23 11:29:36,697 INFO L146 ILogger]: Start minimizeSevpa. Operand 423 states. [2019-05-23 11:29:36,702 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 423 to 418. [2019-05-23 11:29:36,702 INFO L146 ILogger]: Start removeUnreachable. Operand 418 states. [2019-05-23 11:29:36,703 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 418 states to 418 states and 422 transitions. [2019-05-23 11:29:36,703 INFO L146 ILogger]: Start accepts. Automaton has 418 states and 422 transitions. Word has length 410 [2019-05-23 11:29:36,703 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,703 INFO L146 ILogger]: Abstraction has 418 states and 422 transitions. [2019-05-23 11:29:36,704 INFO L146 ILogger]: Interpolant automaton has 47 states. [2019-05-23 11:29:36,704 INFO L146 ILogger]: Start isEmpty. Operand 418 states and 422 transitions. [2019-05-23 11:29:36,706 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 418 [2019-05-23 11:29:36,706 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,706 INFO L146 ILogger]: trace histogram [22, 22, 22, 22, 22, 22, 22, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:36,707 INFO L146 ILogger]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,707 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,707 INFO L146 ILogger]: Analyzing trace with hash 1064464731, now seen corresponding path program 21 times [2019-05-23 11:29:36,707 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,707 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,708 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,708 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:36,708 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,940 INFO L146 ILogger]: Checked inductivity of 2212 backedges. 0 proven. 1639 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2019-05-23 11:29:39,940 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,940 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:39,951 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:40,175 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:29:40,176 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:40,178 INFO L146 ILogger]: Trace formula consists of 432 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:29:40,181 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:40,576 INFO L146 ILogger]: Checked inductivity of 2212 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2019-05-23 11:29:40,595 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:40,595 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 15] total 60 [2019-05-23 11:29:40,596 INFO L146 ILogger]: Interpolant automaton has 60 states [2019-05-23 11:29:40,596 INFO L146 ILogger]: Constructing interpolant automaton starting with 60 interpolants. [2019-05-23 11:29:40,596 INFO L146 ILogger]: CoverageRelationStatistics Valid=637, Invalid=2903, Unknown=0, NotChecked=0, Total=3540 [2019-05-23 11:29:40,597 INFO L146 ILogger]: Start difference. First operand 418 states and 422 transitions. Second operand 60 states. [2019-05-23 11:29:42,435 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:42,435 INFO L146 ILogger]: Finished difference Result 695 states and 704 transitions. [2019-05-23 11:29:42,436 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-05-23 11:29:42,436 INFO L146 ILogger]: Start accepts. Automaton has 60 states. Word has length 417 [2019-05-23 11:29:42,436 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:42,437 INFO L146 ILogger]: With dead ends: 695 [2019-05-23 11:29:42,438 INFO L146 ILogger]: Without dead ends: 442 [2019-05-23 11:29:42,440 INFO L146 ILogger]: 0 DeclaredPredicates, 519 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2591 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2885, Invalid=10455, Unknown=0, NotChecked=0, Total=13340 [2019-05-23 11:29:42,441 INFO L146 ILogger]: Start minimizeSevpa. Operand 442 states. [2019-05-23 11:29:42,446 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 442 to 432. [2019-05-23 11:29:42,447 INFO L146 ILogger]: Start removeUnreachable. Operand 432 states. [2019-05-23 11:29:42,448 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 432 states to 432 states and 436 transitions. [2019-05-23 11:29:42,448 INFO L146 ILogger]: Start accepts. Automaton has 432 states and 436 transitions. Word has length 417 [2019-05-23 11:29:42,448 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:42,448 INFO L146 ILogger]: Abstraction has 432 states and 436 transitions. [2019-05-23 11:29:42,448 INFO L146 ILogger]: Interpolant automaton has 60 states. [2019-05-23 11:29:42,448 INFO L146 ILogger]: Start isEmpty. Operand 432 states and 436 transitions. [2019-05-23 11:29:42,450 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 432 [2019-05-23 11:29:42,451 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:42,451 INFO L146 ILogger]: trace histogram [23, 23, 23, 23, 23, 23, 23, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:42,451 INFO L146 ILogger]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:42,451 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:42,452 INFO L146 ILogger]: Analyzing trace with hash -1332457732, now seen corresponding path program 22 times [2019-05-23 11:29:42,452 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:42,452 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:42,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,453 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:42,453 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:42,482 INFO L146 ILogger]: Conjunction of SSA is unsat