java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-crafted/zero_sum1_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:01,895 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:01,897 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:01,914 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:01,914 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:01,916 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:01,917 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:01,919 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:01,922 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:01,923 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:01,926 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:01,926 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:01,927 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:01,929 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:01,930 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:01,931 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:01,932 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:01,934 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:01,936 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:01,937 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:01,938 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:01,939 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:01,942 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:01,942 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:01,942 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:01,943 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:01,944 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:01,945 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:01,945 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:01,946 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:01,946 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:01,947 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:01,948 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:01,948 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:01,949 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:01,949 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:01,950 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:01,951 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:01,951 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:01,952 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:01,966 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:01,966 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:01,967 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:01,968 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:01,968 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:01,968 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:01,968 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:01,968 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:01,969 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:01,969 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:01,969 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:01,969 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:01,969 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:01,970 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:01,970 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:01,970 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:01,970 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:01,970 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:01,971 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:01,971 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:01,971 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:01,971 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:01,971 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:01,972 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:01,972 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:01,972 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:01,972 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:01,972 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:01,973 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 11:29:02,011 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:02,027 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:02,033 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:02,035 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:02,035 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:02,036 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum1_true-unreach-call.c [2019-05-23 11:29:02,101 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c70156f/02eec0cd38194417a52ee2beba643857/FLAG095149d89 [2019-05-23 11:29:02,537 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:02,538 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum1_true-unreach-call.c [2019-05-23 11:29:02,544 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c70156f/02eec0cd38194417a52ee2beba643857/FLAG095149d89 [2019-05-23 11:29:02,910 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c70156f/02eec0cd38194417a52ee2beba643857 [2019-05-23 11:29:02,922 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:02,924 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:02,925 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:02,925 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:02,929 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:02,930 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:02" (1/1) ... [2019-05-23 11:29:02,933 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b44d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:02, skipping insertion in model container [2019-05-23 11:29:02,933 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:02" (1/1) ... [2019-05-23 11:29:02,941 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:02,958 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:03,129 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:03,135 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:03,158 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:03,184 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:03,185 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03 WrapperNode [2019-05-23 11:29:03,185 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:03,186 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:03,186 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:03,187 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:03,197 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,210 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,229 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:03,229 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:03,229 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:03,230 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:03,239 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,239 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,241 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,241 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,246 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,251 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,252 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (1/1) ... [2019-05-23 11:29:03,254 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:03,254 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:03,255 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:03,255 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:03,256 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (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 11:29:03,404 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:03,405 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:03,405 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:03,405 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:03,405 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:03,807 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:03,808 INFO L146 ILogger]: Removed 8 assume(true) statements. [2019-05-23 11:29:03,809 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:03 BoogieIcfgContainer [2019-05-23 11:29:03,809 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:03,810 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:03,810 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:03,813 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:03,814 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:02" (1/3) ... [2019-05-23 11:29:03,814 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0516a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:03, skipping insertion in model container [2019-05-23 11:29:03,815 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:03" (2/3) ... [2019-05-23 11:29:03,815 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d0516a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:03, skipping insertion in model container [2019-05-23 11:29:03,815 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:03" (3/3) ... [2019-05-23 11:29:03,817 INFO L146 ILogger]: Analyzing ICFG zero_sum1_true-unreach-call.c [2019-05-23 11:29:03,827 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:03,835 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:03,852 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:03,878 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:03,879 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:03,879 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:03,879 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:03,879 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:03,879 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:03,879 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:03,879 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:03,880 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:03,895 INFO L146 ILogger]: Start isEmpty. Operand 40 states. [2019-05-23 11:29:03,902 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:29:03,902 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:03,904 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:03,908 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:03,914 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:03,914 INFO L146 ILogger]: Analyzing trace with hash 281823534, now seen corresponding path program 1 times [2019-05-23 11:29:03,916 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:03,916 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:03,959 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,959 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:03,959 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:03,994 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:04,030 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 11:29:04,032 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:04,033 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:04,036 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:04,048 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:04,049 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:04,051 INFO L146 ILogger]: Start difference. First operand 40 states. Second operand 2 states. [2019-05-23 11:29:04,068 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:04,068 INFO L146 ILogger]: Finished difference Result 60 states and 67 transitions. [2019-05-23 11:29:04,069 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:04,070 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 21 [2019-05-23 11:29:04,071 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:04,079 INFO L146 ILogger]: With dead ends: 60 [2019-05-23 11:29:04,080 INFO L146 ILogger]: Without dead ends: 34 [2019-05-23 11:29:04,083 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:04,101 INFO L146 ILogger]: Start minimizeSevpa. Operand 34 states. [2019-05-23 11:29:04,115 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-05-23 11:29:04,116 INFO L146 ILogger]: Start removeUnreachable. Operand 34 states. [2019-05-23 11:29:04,118 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-05-23 11:29:04,119 INFO L146 ILogger]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 21 [2019-05-23 11:29:04,120 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:04,120 INFO L146 ILogger]: Abstraction has 34 states and 35 transitions. [2019-05-23 11:29:04,120 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:04,120 INFO L146 ILogger]: Start isEmpty. Operand 34 states and 35 transitions. [2019-05-23 11:29:04,121 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 22 [2019-05-23 11:29:04,121 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:04,122 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:04,122 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:04,122 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:04,123 INFO L146 ILogger]: Analyzing trace with hash -2024141628, now seen corresponding path program 1 times [2019-05-23 11:29:04,123 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:04,123 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:04,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:04,124 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:04,124 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:04,143 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:04,256 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 11:29:04,257 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:04,257 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:04,260 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:04,261 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:04,261 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:04,262 INFO L146 ILogger]: Start difference. First operand 34 states and 35 transitions. Second operand 5 states. [2019-05-23 11:29:04,392 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:04,393 INFO L146 ILogger]: Finished difference Result 47 states and 49 transitions. [2019-05-23 11:29:04,393 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:04,393 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 21 [2019-05-23 11:29:04,394 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:04,394 INFO L146 ILogger]: With dead ends: 47 [2019-05-23 11:29:04,395 INFO L146 ILogger]: Without dead ends: 41 [2019-05-23 11:29:04,396 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:04,396 INFO L146 ILogger]: Start minimizeSevpa. Operand 41 states. [2019-05-23 11:29:04,400 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-05-23 11:29:04,401 INFO L146 ILogger]: Start removeUnreachable. Operand 37 states. [2019-05-23 11:29:04,402 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2019-05-23 11:29:04,402 INFO L146 ILogger]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 21 [2019-05-23 11:29:04,402 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:04,403 INFO L146 ILogger]: Abstraction has 37 states and 39 transitions. [2019-05-23 11:29:04,403 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:04,403 INFO L146 ILogger]: Start isEmpty. Operand 37 states and 39 transitions. [2019-05-23 11:29:04,404 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 29 [2019-05-23 11:29:04,404 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:04,404 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] [2019-05-23 11:29:04,404 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:04,405 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:04,405 INFO L146 ILogger]: Analyzing trace with hash -737702006, now seen corresponding path program 1 times [2019-05-23 11:29:04,405 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:04,405 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:04,406 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:04,406 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:04,407 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:04,421 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:04,586 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 11:29:04,586 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:04,587 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 11:29:04,602 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:04,633 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:04,635 INFO L146 ILogger]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:04,642 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:04,859 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 11:29:04,890 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:04,890 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:04,891 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:04,891 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:04,893 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:04,894 INFO L146 ILogger]: Start difference. First operand 37 states and 39 transitions. Second operand 7 states. [2019-05-23 11:29:05,222 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:05,223 INFO L146 ILogger]: Finished difference Result 63 states and 67 transitions. [2019-05-23 11:29:05,226 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:05,226 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 28 [2019-05-23 11:29:05,227 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:05,228 INFO L146 ILogger]: With dead ends: 63 [2019-05-23 11:29:05,228 INFO L146 ILogger]: Without dead ends: 48 [2019-05-23 11:29:05,229 INFO L146 ILogger]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:05,229 INFO L146 ILogger]: Start minimizeSevpa. Operand 48 states. [2019-05-23 11:29:05,238 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 48 to 43. [2019-05-23 11:29:05,238 INFO L146 ILogger]: Start removeUnreachable. Operand 43 states. [2019-05-23 11:29:05,240 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2019-05-23 11:29:05,240 INFO L146 ILogger]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 28 [2019-05-23 11:29:05,240 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:05,240 INFO L146 ILogger]: Abstraction has 43 states and 44 transitions. [2019-05-23 11:29:05,241 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:05,243 INFO L146 ILogger]: Start isEmpty. Operand 43 states and 44 transitions. [2019-05-23 11:29:05,244 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 43 [2019-05-23 11:29:05,244 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:05,245 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] [2019-05-23 11:29:05,245 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:05,246 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:05,246 INFO L146 ILogger]: Analyzing trace with hash 812487441, now seen corresponding path program 1 times [2019-05-23 11:29:05,246 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:05,246 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:05,250 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:05,250 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:05,250 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:05,283 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:05,366 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:29:05,366 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:05,366 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 11:29:05,384 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:05,429 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:05,430 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:05,432 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:05,584 INFO L146 ILogger]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:29:05,609 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:05,610 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:05,610 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:05,610 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:05,611 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:05,612 INFO L146 ILogger]: Start difference. First operand 43 states and 44 transitions. Second operand 9 states. [2019-05-23 11:29:06,080 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:06,080 INFO L146 ILogger]: Finished difference Result 77 states and 79 transitions. [2019-05-23 11:29:06,080 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:06,081 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 42 [2019-05-23 11:29:06,081 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:06,082 INFO L146 ILogger]: With dead ends: 77 [2019-05-23 11:29:06,082 INFO L146 ILogger]: Without dead ends: 55 [2019-05-23 11:29:06,083 INFO L146 ILogger]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:06,083 INFO L146 ILogger]: Start minimizeSevpa. Operand 55 states. [2019-05-23 11:29:06,089 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 55 to 50. [2019-05-23 11:29:06,089 INFO L146 ILogger]: Start removeUnreachable. Operand 50 states. [2019-05-23 11:29:06,090 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2019-05-23 11:29:06,091 INFO L146 ILogger]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 42 [2019-05-23 11:29:06,091 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:06,091 INFO L146 ILogger]: Abstraction has 50 states and 51 transitions. [2019-05-23 11:29:06,091 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:06,091 INFO L146 ILogger]: Start isEmpty. Operand 50 states and 51 transitions. [2019-05-23 11:29:06,092 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 50 [2019-05-23 11:29:06,093 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:06,093 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:06,093 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:06,093 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:06,094 INFO L146 ILogger]: Analyzing trace with hash -1695110812, now seen corresponding path program 2 times [2019-05-23 11:29:06,094 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:06,094 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:06,095 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:06,095 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:06,095 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:06,143 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:06,866 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2019-05-23 11:29:07,262 WARN L146 ILogger]: Spent 177.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2019-05-23 11:29:08,159 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:08,159 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:08,159 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 11:29:08,173 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:08,213 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:08,213 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:08,214 INFO L146 ILogger]: Trace formula consists of 86 conjuncts, 38 conjunts are in the unsatisfiable core [2019-05-23 11:29:08,217 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:08,653 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:08,654 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:08,662 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:08,663 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:08,663 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:08,762 INFO L146 ILogger]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:08,782 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:08,782 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20] total 36 [2019-05-23 11:29:08,783 INFO L146 ILogger]: Interpolant automaton has 36 states [2019-05-23 11:29:08,783 INFO L146 ILogger]: Constructing interpolant automaton starting with 36 interpolants. [2019-05-23 11:29:08,784 INFO L146 ILogger]: CoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:29:08,785 INFO L146 ILogger]: Start difference. First operand 50 states and 51 transitions. Second operand 36 states. [2019-05-23 11:29:10,723 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:10,724 INFO L146 ILogger]: Finished difference Result 83 states and 85 transitions. [2019-05-23 11:29:10,731 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:29:10,731 INFO L146 ILogger]: Start accepts. Automaton has 36 states. Word has length 49 [2019-05-23 11:29:10,732 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:10,732 INFO L146 ILogger]: With dead ends: 83 [2019-05-23 11:29:10,733 INFO L146 ILogger]: Without dead ends: 77 [2019-05-23 11:29:10,734 INFO L146 ILogger]: 0 DeclaredPredicates, 90 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=316, Invalid=2440, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:29:10,735 INFO L146 ILogger]: Start minimizeSevpa. Operand 77 states. [2019-05-23 11:29:10,740 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 77 to 65. [2019-05-23 11:29:10,741 INFO L146 ILogger]: Start removeUnreachable. Operand 65 states. [2019-05-23 11:29:10,742 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2019-05-23 11:29:10,742 INFO L146 ILogger]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 49 [2019-05-23 11:29:10,743 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:10,743 INFO L146 ILogger]: Abstraction has 65 states and 67 transitions. [2019-05-23 11:29:10,743 INFO L146 ILogger]: Interpolant automaton has 36 states. [2019-05-23 11:29:10,743 INFO L146 ILogger]: Start isEmpty. Operand 65 states and 67 transitions. [2019-05-23 11:29:10,744 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:29:10,744 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:10,745 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:10,745 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:10,745 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:10,745 INFO L146 ILogger]: Analyzing trace with hash -587235606, now seen corresponding path program 3 times [2019-05-23 11:29:10,745 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:10,746 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:10,747 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,747 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:10,747 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:10,759 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,926 INFO L146 ILogger]: Checked inductivity of 33 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:10,927 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:10,927 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 11:29:10,938 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:10,960 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:29:10,960 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:10,961 INFO L146 ILogger]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:10,965 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:11,072 INFO L146 ILogger]: Checked inductivity of 33 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:11,092 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:11,092 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:11,092 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:11,092 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:11,093 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:11,093 INFO L146 ILogger]: Start difference. First operand 65 states and 67 transitions. Second operand 20 states. [2019-05-23 11:29:11,508 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:11,509 INFO L146 ILogger]: Finished difference Result 91 states and 93 transitions. [2019-05-23 11:29:11,514 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:29:11,514 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 56 [2019-05-23 11:29:11,515 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:11,515 INFO L146 ILogger]: With dead ends: 91 [2019-05-23 11:29:11,515 INFO L146 ILogger]: Without dead ends: 62 [2019-05-23 11:29:11,517 INFO L146 ILogger]: 0 DeclaredPredicates, 78 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:29:11,517 INFO L146 ILogger]: Start minimizeSevpa. Operand 62 states. [2019-05-23 11:29:11,523 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 62 to 57. [2019-05-23 11:29:11,523 INFO L146 ILogger]: Start removeUnreachable. Operand 57 states. [2019-05-23 11:29:11,524 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2019-05-23 11:29:11,524 INFO L146 ILogger]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 56 [2019-05-23 11:29:11,524 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:11,524 INFO L146 ILogger]: Abstraction has 57 states and 58 transitions. [2019-05-23 11:29:11,525 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:11,525 INFO L146 ILogger]: Start isEmpty. Operand 57 states and 58 transitions. [2019-05-23 11:29:11,526 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 57 [2019-05-23 11:29:11,526 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:11,526 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:11,526 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:11,527 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:11,527 INFO L146 ILogger]: Analyzing trace with hash -64331855, now seen corresponding path program 4 times [2019-05-23 11:29:11,527 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:11,527 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:11,528 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:11,528 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:11,528 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:11,541 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:11,715 INFO L146 ILogger]: Checked inductivity of 33 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:11,716 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:11,716 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 11:29:11,724 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:11,739 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:11,740 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:11,740 INFO L146 ILogger]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:11,743 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:11,939 INFO L146 ILogger]: Checked inductivity of 33 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:11,958 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:11,958 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:29:11,958 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:29:11,958 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:29:11,959 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:29:11,959 INFO L146 ILogger]: Start difference. First operand 57 states and 58 transitions. Second operand 20 states. [2019-05-23 11:29:12,394 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:12,395 INFO L146 ILogger]: Finished difference Result 75 states and 76 transitions. [2019-05-23 11:29:12,396 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:29:12,396 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 56 [2019-05-23 11:29:12,397 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:12,398 INFO L146 ILogger]: With dead ends: 75 [2019-05-23 11:29:12,398 INFO L146 ILogger]: Without dead ends: 69 [2019-05-23 11:29:12,399 INFO L146 ILogger]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:29:12,402 INFO L146 ILogger]: Start minimizeSevpa. Operand 69 states. [2019-05-23 11:29:12,410 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 69 to 64. [2019-05-23 11:29:12,410 INFO L146 ILogger]: Start removeUnreachable. Operand 64 states. [2019-05-23 11:29:12,411 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2019-05-23 11:29:12,412 INFO L146 ILogger]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 56 [2019-05-23 11:29:12,412 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:12,412 INFO L146 ILogger]: Abstraction has 64 states and 65 transitions. [2019-05-23 11:29:12,412 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:29:12,412 INFO L146 ILogger]: Start isEmpty. Operand 64 states and 65 transitions. [2019-05-23 11:29:12,413 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 64 [2019-05-23 11:29:12,413 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:12,414 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:12,414 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:12,414 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:12,414 INFO L146 ILogger]: Analyzing trace with hash -1592948739, now seen corresponding path program 5 times [2019-05-23 11:29:12,414 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:12,415 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:12,415 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:12,416 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:12,416 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:12,450 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:13,385 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2019-05-23 11:29:14,116 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:14,116 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:14,116 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 11:29:14,124 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:14,147 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:29:14,147 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:14,149 WARN L146 ILogger]: Trace formula consists of 108 conjuncts, 54 conjunts are in the unsatisfiable core [2019-05-23 11:29:14,153 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:15,077 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:15,078 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:15,080 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:15,081 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:15,081 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:15,157 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:15,175 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:15,176 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 38 [2019-05-23 11:29:15,176 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:29:15,177 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:29:15,177 INFO L146 ILogger]: CoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:29:15,177 INFO L146 ILogger]: Start difference. First operand 64 states and 65 transitions. Second operand 38 states. [2019-05-23 11:29:16,686 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:16,686 INFO L146 ILogger]: Finished difference Result 104 states and 106 transitions. [2019-05-23 11:29:16,687 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-05-23 11:29:16,687 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 63 [2019-05-23 11:29:16,687 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:16,689 INFO L146 ILogger]: With dead ends: 104 [2019-05-23 11:29:16,689 INFO L146 ILogger]: Without dead ends: 98 [2019-05-23 11:29:16,691 INFO L146 ILogger]: 0 DeclaredPredicates, 102 GetRequests, 47 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=195, Invalid=2157, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:29:16,691 INFO L146 ILogger]: Start minimizeSevpa. Operand 98 states. [2019-05-23 11:29:16,697 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 98 to 79. [2019-05-23 11:29:16,697 INFO L146 ILogger]: Start removeUnreachable. Operand 79 states. [2019-05-23 11:29:16,698 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2019-05-23 11:29:16,698 INFO L146 ILogger]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 63 [2019-05-23 11:29:16,698 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:16,699 INFO L146 ILogger]: Abstraction has 79 states and 81 transitions. [2019-05-23 11:29:16,699 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:29:16,699 INFO L146 ILogger]: Start isEmpty. Operand 79 states and 81 transitions. [2019-05-23 11:29:16,700 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 71 [2019-05-23 11:29:16,700 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:16,700 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:16,700 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:16,701 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:16,701 INFO L146 ILogger]: Analyzing trace with hash 1285993009, now seen corresponding path program 6 times [2019-05-23 11:29:16,701 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:16,701 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:16,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:16,702 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:16,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:16,711 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:17,669 INFO L146 ILogger]: Checked inductivity of 70 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:17,670 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:17,670 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 11:29:17,683 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:17,709 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:29:17,709 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:17,710 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:17,714 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:17,889 INFO L146 ILogger]: Checked inductivity of 70 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:17,918 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:17,918 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:29:17,919 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:29:17,919 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:29:17,920 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:29:17,920 INFO L146 ILogger]: Start difference. First operand 79 states and 81 transitions. Second operand 26 states. [2019-05-23 11:29:18,523 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:18,524 INFO L146 ILogger]: Finished difference Result 112 states and 114 transitions. [2019-05-23 11:29:18,526 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-05-23 11:29:18,526 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 70 [2019-05-23 11:29:18,526 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:18,527 INFO L146 ILogger]: With dead ends: 112 [2019-05-23 11:29:18,527 INFO L146 ILogger]: Without dead ends: 76 [2019-05-23 11:29:18,528 INFO L146 ILogger]: 0 DeclaredPredicates, 101 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:29:18,529 INFO L146 ILogger]: Start minimizeSevpa. Operand 76 states. [2019-05-23 11:29:18,547 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 76 to 71. [2019-05-23 11:29:18,551 INFO L146 ILogger]: Start removeUnreachable. Operand 71 states. [2019-05-23 11:29:18,552 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2019-05-23 11:29:18,552 INFO L146 ILogger]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 70 [2019-05-23 11:29:18,553 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:18,553 INFO L146 ILogger]: Abstraction has 71 states and 72 transitions. [2019-05-23 11:29:18,553 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:29:18,553 INFO L146 ILogger]: Start isEmpty. Operand 71 states and 72 transitions. [2019-05-23 11:29:18,558 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 71 [2019-05-23 11:29:18,558 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:18,558 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:18,558 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:18,559 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:18,559 INFO L146 ILogger]: Analyzing trace with hash 1904849802, now seen corresponding path program 7 times [2019-05-23 11:29:18,559 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:18,559 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:18,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:18,560 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:18,560 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:18,578 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:18,834 INFO L146 ILogger]: Checked inductivity of 70 backedges. 11 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:18,834 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:18,834 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 11:29:18,846 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:18,862 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:18,863 INFO L146 ILogger]: Trace formula consists of 119 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:29:18,865 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:19,014 INFO L146 ILogger]: Checked inductivity of 70 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:19,035 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:19,035 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-05-23 11:29:19,035 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:29:19,036 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:29:19,036 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:29:19,036 INFO L146 ILogger]: Start difference. First operand 71 states and 72 transitions. Second operand 26 states. [2019-05-23 11:29:19,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:19,536 INFO L146 ILogger]: Finished difference Result 89 states and 90 transitions. [2019-05-23 11:29:19,536 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:29:19,536 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 70 [2019-05-23 11:29:19,537 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:19,538 INFO L146 ILogger]: With dead ends: 89 [2019-05-23 11:29:19,538 INFO L146 ILogger]: Without dead ends: 83 [2019-05-23 11:29:19,540 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:29:19,540 INFO L146 ILogger]: Start minimizeSevpa. Operand 83 states. [2019-05-23 11:29:19,545 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 83 to 78. [2019-05-23 11:29:19,545 INFO L146 ILogger]: Start removeUnreachable. Operand 78 states. [2019-05-23 11:29:19,546 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2019-05-23 11:29:19,546 INFO L146 ILogger]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 70 [2019-05-23 11:29:19,546 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:19,546 INFO L146 ILogger]: Abstraction has 78 states and 79 transitions. [2019-05-23 11:29:19,546 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:29:19,546 INFO L146 ILogger]: Start isEmpty. Operand 78 states and 79 transitions. [2019-05-23 11:29:19,547 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 78 [2019-05-23 11:29:19,547 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:19,548 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:19,548 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:19,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:19,548 INFO L146 ILogger]: Analyzing trace with hash 1111088644, now seen corresponding path program 8 times [2019-05-23 11:29:19,548 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:19,549 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:19,549 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:19,549 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:19,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:19,567 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:21,384 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:21,384 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:21,384 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 11:29:21,396 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:21,424 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:21,424 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:21,426 WARN L146 ILogger]: Trace formula consists of 130 conjuncts, 70 conjunts are in the unsatisfiable core [2019-05-23 11:29:21,429 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:22,315 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:22,315 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:22,320 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:22,321 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:22,321 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:22,421 INFO L146 ILogger]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:22,439 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:22,439 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 50 [2019-05-23 11:29:22,440 INFO L146 ILogger]: Interpolant automaton has 50 states [2019-05-23 11:29:22,440 INFO L146 ILogger]: Constructing interpolant automaton starting with 50 interpolants. [2019-05-23 11:29:22,441 INFO L146 ILogger]: CoverageRelationStatistics Valid=169, Invalid=2281, Unknown=0, NotChecked=0, Total=2450 [2019-05-23 11:29:22,441 INFO L146 ILogger]: Start difference. First operand 78 states and 79 transitions. Second operand 50 states. [2019-05-23 11:29:24,621 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:24,621 INFO L146 ILogger]: Finished difference Result 125 states and 127 transitions. [2019-05-23 11:29:24,622 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-05-23 11:29:24,622 INFO L146 ILogger]: Start accepts. Automaton has 50 states. Word has length 77 [2019-05-23 11:29:24,622 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:24,622 INFO L146 ILogger]: With dead ends: 125 [2019-05-23 11:29:24,623 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:29:24,625 INFO L146 ILogger]: 0 DeclaredPredicates, 128 GetRequests, 55 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=262, Invalid=3898, Unknown=0, NotChecked=0, Total=4160 [2019-05-23 11:29:24,625 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:29:24,630 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 93. [2019-05-23 11:29:24,630 INFO L146 ILogger]: Start removeUnreachable. Operand 93 states. [2019-05-23 11:29:24,631 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2019-05-23 11:29:24,631 INFO L146 ILogger]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 77 [2019-05-23 11:29:24,631 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:24,631 INFO L146 ILogger]: Abstraction has 93 states and 95 transitions. [2019-05-23 11:29:24,632 INFO L146 ILogger]: Interpolant automaton has 50 states. [2019-05-23 11:29:24,632 INFO L146 ILogger]: Start isEmpty. Operand 93 states and 95 transitions. [2019-05-23 11:29:24,633 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:29:24,633 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:24,633 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:24,634 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:24,634 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:24,634 INFO L146 ILogger]: Analyzing trace with hash -1103767990, now seen corresponding path program 9 times [2019-05-23 11:29:24,634 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:24,634 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:24,635 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:24,635 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:24,635 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:24,644 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:24,848 INFO L146 ILogger]: Checked inductivity of 121 backedges. 56 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:24,848 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:24,848 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 11:29:24,857 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:24,888 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:29:24,888 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:24,889 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:29:24,891 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:25,076 INFO L146 ILogger]: Checked inductivity of 121 backedges. 75 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:25,095 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:25,095 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:29:25,096 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:29:25,096 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:29:25,097 INFO L146 ILogger]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:29:25,097 INFO L146 ILogger]: Start difference. First operand 93 states and 95 transitions. Second operand 32 states. [2019-05-23 11:29:25,594 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:25,594 INFO L146 ILogger]: Finished difference Result 133 states and 135 transitions. [2019-05-23 11:29:25,595 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-05-23 11:29:25,595 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 84 [2019-05-23 11:29:25,595 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:25,596 INFO L146 ILogger]: With dead ends: 133 [2019-05-23 11:29:25,596 INFO L146 ILogger]: Without dead ends: 90 [2019-05-23 11:29:25,597 INFO L146 ILogger]: 0 DeclaredPredicates, 124 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=407, Invalid=2245, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:29:25,597 INFO L146 ILogger]: Start minimizeSevpa. Operand 90 states. [2019-05-23 11:29:25,601 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 90 to 85. [2019-05-23 11:29:25,601 INFO L146 ILogger]: Start removeUnreachable. Operand 85 states. [2019-05-23 11:29:25,602 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2019-05-23 11:29:25,602 INFO L146 ILogger]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 84 [2019-05-23 11:29:25,602 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:25,602 INFO L146 ILogger]: Abstraction has 85 states and 86 transitions. [2019-05-23 11:29:25,603 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:29:25,603 INFO L146 ILogger]: Start isEmpty. Operand 85 states and 86 transitions. [2019-05-23 11:29:25,603 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:29:25,604 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:25,604 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:25,604 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:25,604 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:25,605 INFO L146 ILogger]: Analyzing trace with hash -496480559, now seen corresponding path program 10 times [2019-05-23 11:29:25,605 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:25,605 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:25,606 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:25,606 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:25,606 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:25,613 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:25,810 INFO L146 ILogger]: Checked inductivity of 121 backedges. 27 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:25,810 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:25,810 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 11:29:25,821 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:25,841 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:25,841 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:25,842 INFO L146 ILogger]: Trace formula consists of 139 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:29:25,843 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:26,032 INFO L146 ILogger]: Checked inductivity of 121 backedges. 46 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:26,052 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:26,052 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 32 [2019-05-23 11:29:26,053 INFO L146 ILogger]: Interpolant automaton has 32 states [2019-05-23 11:29:26,053 INFO L146 ILogger]: Constructing interpolant automaton starting with 32 interpolants. [2019-05-23 11:29:26,054 INFO L146 ILogger]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:29:26,054 INFO L146 ILogger]: Start difference. First operand 85 states and 86 transitions. Second operand 32 states. [2019-05-23 11:29:27,347 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:27,347 INFO L146 ILogger]: Finished difference Result 103 states and 104 transitions. [2019-05-23 11:29:27,348 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-05-23 11:29:27,348 INFO L146 ILogger]: Start accepts. Automaton has 32 states. Word has length 84 [2019-05-23 11:29:27,348 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:27,348 INFO L146 ILogger]: With dead ends: 103 [2019-05-23 11:29:27,348 INFO L146 ILogger]: Without dead ends: 97 [2019-05-23 11:29:27,350 INFO L146 ILogger]: 0 DeclaredPredicates, 130 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=512, Invalid=2794, Unknown=0, NotChecked=0, Total=3306 [2019-05-23 11:29:27,350 INFO L146 ILogger]: Start minimizeSevpa. Operand 97 states. [2019-05-23 11:29:27,353 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 97 to 92. [2019-05-23 11:29:27,354 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:29:27,354 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2019-05-23 11:29:27,354 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 84 [2019-05-23 11:29:27,355 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:27,355 INFO L146 ILogger]: Abstraction has 92 states and 93 transitions. [2019-05-23 11:29:27,355 INFO L146 ILogger]: Interpolant automaton has 32 states. [2019-05-23 11:29:27,355 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 93 transitions. [2019-05-23 11:29:27,356 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 92 [2019-05-23 11:29:27,356 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:27,356 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:27,357 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:27,357 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:27,357 INFO L146 ILogger]: Analyzing trace with hash -516270883, now seen corresponding path program 11 times [2019-05-23 11:29:27,357 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:27,357 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:27,358 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:27,358 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:27,358 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:27,385 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:28,150 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2019-05-23 11:29:30,631 INFO L146 ILogger]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:30,632 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:30,632 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 11:29:30,640 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:30,669 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-05-23 11:29:30,670 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:30,672 WARN L146 ILogger]: Trace formula consists of 152 conjuncts, 86 conjunts are in the unsatisfiable core [2019-05-23 11:29:30,673 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:32,149 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:32,150 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:32,153 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:32,153 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:32,153 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:32,463 INFO L146 ILogger]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:32,482 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:32,483 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 62 [2019-05-23 11:29:32,483 INFO L146 ILogger]: Interpolant automaton has 62 states [2019-05-23 11:29:32,483 INFO L146 ILogger]: Constructing interpolant automaton starting with 62 interpolants. [2019-05-23 11:29:32,485 INFO L146 ILogger]: CoverageRelationStatistics Valid=212, Invalid=3570, Unknown=0, NotChecked=0, Total=3782 [2019-05-23 11:29:32,485 INFO L146 ILogger]: Start difference. First operand 92 states and 93 transitions. Second operand 62 states. [2019-05-23 11:29:36,226 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,226 INFO L146 ILogger]: Finished difference Result 146 states and 148 transitions. [2019-05-23 11:29:36,227 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:29:36,227 INFO L146 ILogger]: Start accepts. Automaton has 62 states. Word has length 91 [2019-05-23 11:29:36,227 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,229 INFO L146 ILogger]: With dead ends: 146 [2019-05-23 11:29:36,229 INFO L146 ILogger]: Without dead ends: 140 [2019-05-23 11:29:36,232 INFO L146 ILogger]: 0 DeclaredPredicates, 154 GetRequests, 64 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=329, Invalid=6151, Unknown=0, NotChecked=0, Total=6480 [2019-05-23 11:29:36,232 INFO L146 ILogger]: Start minimizeSevpa. Operand 140 states. [2019-05-23 11:29:36,236 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 140 to 107. [2019-05-23 11:29:36,236 INFO L146 ILogger]: Start removeUnreachable. Operand 107 states. [2019-05-23 11:29:36,236 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 107 states to 107 states and 109 transitions. [2019-05-23 11:29:36,237 INFO L146 ILogger]: Start accepts. Automaton has 107 states and 109 transitions. Word has length 91 [2019-05-23 11:29:36,237 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,237 INFO L146 ILogger]: Abstraction has 107 states and 109 transitions. [2019-05-23 11:29:36,237 INFO L146 ILogger]: Interpolant automaton has 62 states. [2019-05-23 11:29:36,237 INFO L146 ILogger]: Start isEmpty. Operand 107 states and 109 transitions. [2019-05-23 11:29:36,238 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:29:36,238 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,238 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:36,238 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,239 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,239 INFO L146 ILogger]: Analyzing trace with hash 398698833, now seen corresponding path program 12 times [2019-05-23 11:29:36,239 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,239 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,240 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,240 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:36,240 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,248 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,534 INFO L146 ILogger]: Checked inductivity of 186 backedges. 86 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:36,535 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:36,535 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 11:29:36,543 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:36,571 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:29:36,571 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,572 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:29:36,573 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:37,547 INFO L146 ILogger]: Checked inductivity of 186 backedges. 111 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:37,565 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:37,566 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 38 [2019-05-23 11:29:37,566 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:29:37,566 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:29:37,567 INFO L146 ILogger]: CoverageRelationStatistics Valid=197, Invalid=1209, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:29:37,567 INFO L146 ILogger]: Start difference. First operand 107 states and 109 transitions. Second operand 38 states. [2019-05-23 11:29:38,168 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:38,169 INFO L146 ILogger]: Finished difference Result 154 states and 156 transitions. [2019-05-23 11:29:38,169 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:29:38,169 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 98 [2019-05-23 11:29:38,170 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:38,171 INFO L146 ILogger]: With dead ends: 154 [2019-05-23 11:29:38,171 INFO L146 ILogger]: Without dead ends: 104 [2019-05-23 11:29:38,173 INFO L146 ILogger]: 0 DeclaredPredicates, 147 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=578, Invalid=3328, Unknown=0, NotChecked=0, Total=3906 [2019-05-23 11:29:38,173 INFO L146 ILogger]: Start minimizeSevpa. Operand 104 states. [2019-05-23 11:29:38,176 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 104 to 99. [2019-05-23 11:29:38,176 INFO L146 ILogger]: Start removeUnreachable. Operand 99 states. [2019-05-23 11:29:38,176 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2019-05-23 11:29:38,176 INFO L146 ILogger]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 98 [2019-05-23 11:29:38,177 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:38,177 INFO L146 ILogger]: Abstraction has 99 states and 100 transitions. [2019-05-23 11:29:38,177 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:29:38,177 INFO L146 ILogger]: Start isEmpty. Operand 99 states and 100 transitions. [2019-05-23 11:29:38,177 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 99 [2019-05-23 11:29:38,178 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:38,178 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:38,178 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:38,178 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:38,178 INFO L146 ILogger]: Analyzing trace with hash -1944528150, now seen corresponding path program 13 times [2019-05-23 11:29:38,178 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:38,178 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:38,179 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,179 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:38,179 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:38,187 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,217 INFO L146 ILogger]: Checked inductivity of 186 backedges. 50 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:39,218 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:39,218 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 11:29:39,226 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:39,251 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:39,252 INFO L146 ILogger]: Trace formula consists of 163 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:29:39,254 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:39,791 INFO L146 ILogger]: Checked inductivity of 186 backedges. 75 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:39,811 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:39,811 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 38 [2019-05-23 11:29:39,811 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:29:39,811 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:29:39,812 INFO L146 ILogger]: CoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:29:39,812 INFO L146 ILogger]: Start difference. First operand 99 states and 100 transitions. Second operand 38 states. [2019-05-23 11:29:40,689 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:40,690 INFO L146 ILogger]: Finished difference Result 117 states and 118 transitions. [2019-05-23 11:29:40,690 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-05-23 11:29:40,690 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 98 [2019-05-23 11:29:40,690 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:40,691 INFO L146 ILogger]: With dead ends: 117 [2019-05-23 11:29:40,692 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:29:40,694 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=697, Invalid=3995, Unknown=0, NotChecked=0, Total=4692 [2019-05-23 11:29:40,695 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:29:40,697 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 106. [2019-05-23 11:29:40,698 INFO L146 ILogger]: Start removeUnreachable. Operand 106 states. [2019-05-23 11:29:40,698 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2019-05-23 11:29:40,698 INFO L146 ILogger]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 98 [2019-05-23 11:29:40,699 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:40,699 INFO L146 ILogger]: Abstraction has 106 states and 107 transitions. [2019-05-23 11:29:40,699 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:29:40,699 INFO L146 ILogger]: Start isEmpty. Operand 106 states and 107 transitions. [2019-05-23 11:29:40,700 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 106 [2019-05-23 11:29:40,700 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:40,700 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:40,700 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:40,700 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:40,701 INFO L146 ILogger]: Analyzing trace with hash 991013540, now seen corresponding path program 14 times [2019-05-23 11:29:40,701 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:40,701 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:40,701 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,702 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:40,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:40,718 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:42,139 WARN L146 ILogger]: Spent 146.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2019-05-23 11:29:44,373 INFO L146 ILogger]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:44,373 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:44,373 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:29:44,382 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:44,411 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:44,411 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:44,413 WARN L146 ILogger]: Trace formula consists of 174 conjuncts, 102 conjunts are in the unsatisfiable core [2019-05-23 11:29:44,415 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:46,552 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:46,553 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:46,557 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:46,557 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:46,557 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:46,730 INFO L146 ILogger]: Checked inductivity of 222 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:46,749 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:46,749 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 74 [2019-05-23 11:29:46,749 INFO L146 ILogger]: Interpolant automaton has 74 states [2019-05-23 11:29:46,750 INFO L146 ILogger]: Constructing interpolant automaton starting with 74 interpolants. [2019-05-23 11:29:46,751 INFO L146 ILogger]: CoverageRelationStatistics Valid=255, Invalid=5147, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:29:46,751 INFO L146 ILogger]: Start difference. First operand 106 states and 107 transitions. Second operand 74 states. [2019-05-23 11:29:51,101 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:51,101 INFO L146 ILogger]: Finished difference Result 167 states and 169 transitions. [2019-05-23 11:29:51,101 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-05-23 11:29:51,102 INFO L146 ILogger]: Start accepts. Automaton has 74 states. Word has length 105 [2019-05-23 11:29:51,102 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:51,103 INFO L146 ILogger]: With dead ends: 167 [2019-05-23 11:29:51,103 INFO L146 ILogger]: Without dead ends: 161 [2019-05-23 11:29:51,106 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 72 SyntacticMatches, 13 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=396, Invalid=8916, Unknown=0, NotChecked=0, Total=9312 [2019-05-23 11:29:51,107 INFO L146 ILogger]: Start minimizeSevpa. Operand 161 states. [2019-05-23 11:29:51,111 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 161 to 121. [2019-05-23 11:29:51,111 INFO L146 ILogger]: Start removeUnreachable. Operand 121 states. [2019-05-23 11:29:51,112 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2019-05-23 11:29:51,112 INFO L146 ILogger]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 105 [2019-05-23 11:29:51,112 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:51,112 INFO L146 ILogger]: Abstraction has 121 states and 123 transitions. [2019-05-23 11:29:51,112 INFO L146 ILogger]: Interpolant automaton has 74 states. [2019-05-23 11:29:51,112 INFO L146 ILogger]: Start isEmpty. Operand 121 states and 123 transitions. [2019-05-23 11:29:51,113 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:29:51,113 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,113 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:51,114 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,114 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,114 INFO L146 ILogger]: Analyzing trace with hash -771975766, now seen corresponding path program 15 times [2019-05-23 11:29:51,114 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,114 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,115 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:51,115 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,124 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,671 INFO L146 ILogger]: Checked inductivity of 265 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:51,672 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:51,672 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 11:29:51,681 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:51,714 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-05-23 11:29:51,715 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:51,716 INFO L146 ILogger]: Trace formula consists of 185 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:29:51,718 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:52,050 INFO L146 ILogger]: Checked inductivity of 265 backedges. 154 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:52,070 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:52,070 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 44 [2019-05-23 11:29:52,071 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:29:52,071 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:29:52,071 INFO L146 ILogger]: CoverageRelationStatistics Valid=256, Invalid=1636, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:29:52,072 INFO L146 ILogger]: Start difference. First operand 121 states and 123 transitions. Second operand 44 states. [2019-05-23 11:29:52,861 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,862 INFO L146 ILogger]: Finished difference Result 175 states and 177 transitions. [2019-05-23 11:29:52,862 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-05-23 11:29:52,862 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 112 [2019-05-23 11:29:52,863 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,864 INFO L146 ILogger]: With dead ends: 175 [2019-05-23 11:29:52,864 INFO L146 ILogger]: Without dead ends: 118 [2019-05-23 11:29:52,865 INFO L146 ILogger]: 0 DeclaredPredicates, 170 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=780, Invalid=4622, Unknown=0, NotChecked=0, Total=5402 [2019-05-23 11:29:52,866 INFO L146 ILogger]: Start minimizeSevpa. Operand 118 states. [2019-05-23 11:29:52,869 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 118 to 113. [2019-05-23 11:29:52,869 INFO L146 ILogger]: Start removeUnreachable. Operand 113 states. [2019-05-23 11:29:52,869 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2019-05-23 11:29:52,870 INFO L146 ILogger]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 112 [2019-05-23 11:29:52,870 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,870 INFO L146 ILogger]: Abstraction has 113 states and 114 transitions. [2019-05-23 11:29:52,870 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:29:52,870 INFO L146 ILogger]: Start isEmpty. Operand 113 states and 114 transitions. [2019-05-23 11:29:52,871 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 113 [2019-05-23 11:29:52,871 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,871 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:52,871 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,872 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,872 INFO L146 ILogger]: Analyzing trace with hash -214821391, now seen corresponding path program 16 times [2019-05-23 11:29:52,872 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,872 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,873 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,873 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:52,873 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,881 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,333 INFO L146 ILogger]: Checked inductivity of 265 backedges. 80 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:53,333 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,333 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 11:29:53,344 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:53,372 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:53,372 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,374 INFO L146 ILogger]: Trace formula consists of 183 conjuncts, 28 conjunts are in the unsatisfiable core [2019-05-23 11:29:53,375 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,757 INFO L146 ILogger]: Checked inductivity of 265 backedges. 111 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:53,776 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:53,776 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 44 [2019-05-23 11:29:53,776 INFO L146 ILogger]: Interpolant automaton has 44 states [2019-05-23 11:29:53,777 INFO L146 ILogger]: Constructing interpolant automaton starting with 44 interpolants. [2019-05-23 11:29:53,777 INFO L146 ILogger]: CoverageRelationStatistics Valid=272, Invalid=1620, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:29:53,777 INFO L146 ILogger]: Start difference. First operand 113 states and 114 transitions. Second operand 44 states. [2019-05-23 11:29:55,072 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:55,073 INFO L146 ILogger]: Finished difference Result 131 states and 132 transitions. [2019-05-23 11:29:55,073 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2019-05-23 11:29:55,073 INFO L146 ILogger]: Start accepts. Automaton has 44 states. Word has length 112 [2019-05-23 11:29:55,074 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:55,074 INFO L146 ILogger]: With dead ends: 131 [2019-05-23 11:29:55,075 INFO L146 ILogger]: Without dead ends: 125 [2019-05-23 11:29:55,076 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=912, Invalid=5408, Unknown=0, NotChecked=0, Total=6320 [2019-05-23 11:29:55,076 INFO L146 ILogger]: Start minimizeSevpa. Operand 125 states. [2019-05-23 11:29:55,080 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 125 to 120. [2019-05-23 11:29:55,080 INFO L146 ILogger]: Start removeUnreachable. Operand 120 states. [2019-05-23 11:29:55,081 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2019-05-23 11:29:55,081 INFO L146 ILogger]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 112 [2019-05-23 11:29:55,081 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:55,081 INFO L146 ILogger]: Abstraction has 120 states and 121 transitions. [2019-05-23 11:29:55,082 INFO L146 ILogger]: Interpolant automaton has 44 states. [2019-05-23 11:29:55,082 INFO L146 ILogger]: Start isEmpty. Operand 120 states and 121 transitions. [2019-05-23 11:29:55,082 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 120 [2019-05-23 11:29:55,082 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:55,083 INFO L146 ILogger]: trace histogram [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] [2019-05-23 11:29:55,083 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:55,083 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:55,083 INFO L146 ILogger]: Analyzing trace with hash 307775933, now seen corresponding path program 17 times [2019-05-23 11:29:55,083 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:55,084 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:55,084 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,084 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:55,085 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,102 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,327 INFO L146 ILogger]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:59,327 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:59,327 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 11:29:59,338 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:59,376 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2019-05-23 11:29:59,376 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,378 WARN L146 ILogger]: Trace formula consists of 196 conjuncts, 118 conjunts are in the unsatisfiable core [2019-05-23 11:29:59,380 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:03,371 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:30:03,371 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:03,375 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:03,376 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:03,376 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:03,594 INFO L146 ILogger]: Checked inductivity of 308 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:03,612 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:03,613 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 86 [2019-05-23 11:30:03,613 INFO L146 ILogger]: Interpolant automaton has 86 states [2019-05-23 11:30:03,613 INFO L146 ILogger]: Constructing interpolant automaton starting with 86 interpolants. [2019-05-23 11:30:03,614 INFO L146 ILogger]: CoverageRelationStatistics Valid=298, Invalid=7012, Unknown=0, NotChecked=0, Total=7310 [2019-05-23 11:30:03,614 INFO L146 ILogger]: Start difference. First operand 120 states and 121 transitions. Second operand 86 states.