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-multidimensional/copy-3-n-u_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:30:42,735 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:30:42,739 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:30:42,753 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:30:42,753 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:30:42,754 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:30:42,757 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:30:42,760 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:30:42,764 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:30:42,766 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:30:42,767 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:30:42,768 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:30:42,768 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:30:42,769 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:30:42,772 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:30:42,772 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:30:42,779 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:30:42,784 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:30:42,787 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:30:42,789 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:30:42,790 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:30:42,791 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:30:42,793 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:30:42,793 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:30:42,793 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:30:42,794 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:30:42,794 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:30:42,795 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:30:42,796 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:30:42,796 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:30:42,797 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:30:42,798 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:30:42,799 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:30:42,799 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:30:42,800 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:30:42,800 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:30:42,800 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:30:42,801 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:30:42,802 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:30:42,802 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:30:42,822 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:30:42,822 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:30:42,823 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:30:42,824 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:30:42,824 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:30:42,825 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:30:42,825 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:30:42,825 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:30:42,825 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:30:42,825 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:30:42,825 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:30:42,826 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:30:42,826 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:30:42,826 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:30:42,826 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:30:42,826 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:30:42,826 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:30:42,828 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:30:42,828 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:30:42,828 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:30:42,828 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:30:42,829 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:30:42,829 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:30:42,829 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:30:42,829 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:30:42,829 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:30:42,829 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:30:42,830 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:30:42,830 INFO L146 ILogger]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2019-05-23 11:30:42,881 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:30:42,896 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:30:42,901 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:30:42,903 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:30:42,903 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:30:42,904 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-multidimensional/copy-3-n-u_true-unreach-call.i [2019-05-23 11:30:42,976 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1e29566/4a17da85a94c4277be39076147ef6e8d/FLAGe950d812f [2019-05-23 11:30:43,361 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:30:43,362 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-multidimensional/copy-3-n-u_true-unreach-call.i [2019-05-23 11:30:43,369 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1e29566/4a17da85a94c4277be39076147ef6e8d/FLAGe950d812f [2019-05-23 11:30:43,741 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1e29566/4a17da85a94c4277be39076147ef6e8d [2019-05-23 11:30:43,750 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:30:43,751 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:30:43,752 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:43,752 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:30:43,756 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:30:43,757 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:43" (1/1) ... [2019-05-23 11:30:43,760 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82fca2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:43, skipping insertion in model container [2019-05-23 11:30:43,760 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:30:43" (1/1) ... [2019-05-23 11:30:43,767 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:30:43,793 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:30:44,048 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:44,055 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:30:44,098 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:30:44,118 INFO L146 ILogger]: Completed translation [2019-05-23 11:30:44,118 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44 WrapperNode [2019-05-23 11:30:44,119 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:30:44,119 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:44,119 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:30:44,119 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:30:44,127 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,137 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,166 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:30:44,166 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:30:44,166 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:30:44,166 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:30:44,176 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,177 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,179 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,180 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,274 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,283 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,285 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... [2019-05-23 11:30:44,290 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:30:44,291 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:30:44,291 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:30:44,291 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:30:44,292 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000 [2019-05-23 11:30:44,349 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:30:44,349 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:30:44,349 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:30:44,349 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:30:44,349 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:30:44,350 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:30:44,878 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:30:44,878 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:30:44,879 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:44 BoogieIcfgContainer [2019-05-23 11:30:44,880 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:30:44,881 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:30:44,881 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:30:44,885 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:30:44,886 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:30:43" (1/3) ... [2019-05-23 11:30:44,887 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5b120d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:44, skipping insertion in model container [2019-05-23 11:30:44,887 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:30:44" (2/3) ... [2019-05-23 11:30:44,887 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5b120d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:30:44, skipping insertion in model container [2019-05-23 11:30:44,888 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:30:44" (3/3) ... [2019-05-23 11:30:44,889 INFO L146 ILogger]: Analyzing ICFG copy-3-n-u_true-unreach-call.i [2019-05-23 11:30:44,900 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:30:44,909 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:30:44,926 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:30:44,955 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:30:44,955 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:30:44,956 INFO L146 ILogger]: Hoare is true [2019-05-23 11:30:44,956 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:30:44,956 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:30:44,956 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:30:44,956 INFO L146 ILogger]: Difference is false [2019-05-23 11:30:44,957 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:30:44,957 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:30:44,974 INFO L146 ILogger]: Start isEmpty. Operand 72 states. [2019-05-23 11:30:44,981 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 37 [2019-05-23 11:30:44,981 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:44,982 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:44,985 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:44,990 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:44,990 INFO L146 ILogger]: Analyzing trace with hash -693537528, now seen corresponding path program 1 times [2019-05-23 11:30:44,992 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:44,993 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:45,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,035 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:45,035 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,066 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:45,067 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:45,067 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:30:45,077 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:45,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,110 INFO L146 ILogger]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:45,116 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:45,327 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:45,359 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:45,359 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:30:45,363 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:30:45,376 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:30:45,377 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:45,379 INFO L146 ILogger]: Start difference. First operand 72 states. Second operand 4 states. [2019-05-23 11:30:45,721 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:45,721 INFO L146 ILogger]: Finished difference Result 172 states and 227 transitions. [2019-05-23 11:30:45,722 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:30:45,723 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 36 [2019-05-23 11:30:45,724 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:45,735 INFO L146 ILogger]: With dead ends: 172 [2019-05-23 11:30:45,735 INFO L146 ILogger]: Without dead ends: 107 [2019-05-23 11:30:45,738 INFO L146 ILogger]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:45,754 INFO L146 ILogger]: Start minimizeSevpa. Operand 107 states. [2019-05-23 11:30:45,773 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 107 to 66. [2019-05-23 11:30:45,774 INFO L146 ILogger]: Start removeUnreachable. Operand 66 states. [2019-05-23 11:30:45,776 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2019-05-23 11:30:45,778 INFO L146 ILogger]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 36 [2019-05-23 11:30:45,778 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:45,778 INFO L146 ILogger]: Abstraction has 66 states and 74 transitions. [2019-05-23 11:30:45,778 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:30:45,779 INFO L146 ILogger]: Start isEmpty. Operand 66 states and 74 transitions. [2019-05-23 11:30:45,780 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 47 [2019-05-23 11:30:45,780 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:45,780 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:45,781 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:45,781 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:45,781 INFO L146 ILogger]: Analyzing trace with hash 428701512, now seen corresponding path program 1 times [2019-05-23 11:30:45,782 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:45,782 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:45,783 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,783 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:45,783 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:45,789 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:45,789 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:45,790 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:30:45,804 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:45,830 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:45,831 INFO L146 ILogger]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:45,834 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:45,891 INFO L146 ILogger]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:30:45,914 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:45,914 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:30:45,916 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:30:45,916 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:30:45,917 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:45,917 INFO L146 ILogger]: Start difference. First operand 66 states and 74 transitions. Second operand 4 states. [2019-05-23 11:30:46,209 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,209 INFO L146 ILogger]: Finished difference Result 151 states and 173 transitions. [2019-05-23 11:30:46,212 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:30:46,213 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 46 [2019-05-23 11:30:46,213 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,215 INFO L146 ILogger]: With dead ends: 151 [2019-05-23 11:30:46,215 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:30:46,216 INFO L146 ILogger]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:46,217 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:30:46,225 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 69. [2019-05-23 11:30:46,226 INFO L146 ILogger]: Start removeUnreachable. Operand 69 states. [2019-05-23 11:30:46,227 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2019-05-23 11:30:46,227 INFO L146 ILogger]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 46 [2019-05-23 11:30:46,228 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,228 INFO L146 ILogger]: Abstraction has 69 states and 77 transitions. [2019-05-23 11:30:46,228 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:30:46,228 INFO L146 ILogger]: Start isEmpty. Operand 69 states and 77 transitions. [2019-05-23 11:30:46,230 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 55 [2019-05-23 11:30:46,230 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,230 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:46,230 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,231 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,231 INFO L146 ILogger]: Analyzing trace with hash -1982894104, now seen corresponding path program 1 times [2019-05-23 11:30:46,231 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,231 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,232 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,233 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:46,233 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,241 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:46,241 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:46,242 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:30:46,256 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:46,293 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,294 INFO L146 ILogger]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:30:46,296 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:46,342 INFO L146 ILogger]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:30:46,366 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:30:46,366 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:30:46,367 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:30:46,367 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:30:46,367 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:46,368 INFO L146 ILogger]: Start difference. First operand 69 states and 77 transitions. Second operand 4 states. [2019-05-23 11:30:46,529 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:46,529 INFO L146 ILogger]: Finished difference Result 154 states and 173 transitions. [2019-05-23 11:30:46,532 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:30:46,532 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 54 [2019-05-23 11:30:46,533 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:46,534 INFO L146 ILogger]: With dead ends: 154 [2019-05-23 11:30:46,534 INFO L146 ILogger]: Without dead ends: 101 [2019-05-23 11:30:46,535 INFO L146 ILogger]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:30:46,535 INFO L146 ILogger]: Start minimizeSevpa. Operand 101 states. [2019-05-23 11:30:46,543 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 101 to 72. [2019-05-23 11:30:46,544 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:30:46,545 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2019-05-23 11:30:46,545 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 54 [2019-05-23 11:30:46,545 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:46,545 INFO L146 ILogger]: Abstraction has 72 states and 80 transitions. [2019-05-23 11:30:46,546 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:30:46,546 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 80 transitions. [2019-05-23 11:30:46,547 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 65 [2019-05-23 11:30:46,548 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:46,548 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:46,548 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:46,548 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:46,548 INFO L146 ILogger]: Analyzing trace with hash 1121727898, now seen corresponding path program 1 times [2019-05-23 11:30:46,549 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:46,549 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:46,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,550 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:46,550 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:46,555 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:46,555 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:46,556 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:30:46,568 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:46,593 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:46,594 INFO L146 ILogger]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:30:46,597 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:46,898 INFO L146 ILogger]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-05-23 11:30:46,929 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:46,929 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:30:46,930 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:46,930 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:46,931 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:46,931 INFO L146 ILogger]: Start difference. First operand 72 states and 80 transitions. Second operand 5 states. [2019-05-23 11:30:47,189 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:47,189 INFO L146 ILogger]: Finished difference Result 179 states and 198 transitions. [2019-05-23 11:30:47,190 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:47,190 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 64 [2019-05-23 11:30:47,190 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:47,191 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:30:47,191 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:30:47,192 INFO L146 ILogger]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:47,193 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:30:47,200 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 92. [2019-05-23 11:30:47,201 INFO L146 ILogger]: Start removeUnreachable. Operand 92 states. [2019-05-23 11:30:47,202 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2019-05-23 11:30:47,202 INFO L146 ILogger]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 64 [2019-05-23 11:30:47,202 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:47,203 INFO L146 ILogger]: Abstraction has 92 states and 101 transitions. [2019-05-23 11:30:47,203 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:47,203 INFO L146 ILogger]: Start isEmpty. Operand 92 states and 101 transitions. [2019-05-23 11:30:47,205 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 75 [2019-05-23 11:30:47,205 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:47,205 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:47,205 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:47,206 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:47,206 INFO L146 ILogger]: Analyzing trace with hash 385226344, now seen corresponding path program 2 times [2019-05-23 11:30:47,206 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:47,206 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:47,207 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,207 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:47,207 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,212 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:47,212 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:47,212 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:30:47,226 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:47,261 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:47,261 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:47,262 INFO L146 ILogger]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:30:47,265 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:47,347 INFO L146 ILogger]: Checked inductivity of 18 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:30:47,366 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:47,366 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-05-23 11:30:47,367 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:30:47,368 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:30:47,368 INFO L146 ILogger]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:30:47,368 INFO L146 ILogger]: Start difference. First operand 92 states and 101 transitions. Second operand 6 states. [2019-05-23 11:30:47,844 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:47,845 INFO L146 ILogger]: Finished difference Result 221 states and 241 transitions. [2019-05-23 11:30:47,845 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-05-23 11:30:47,845 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 74 [2019-05-23 11:30:47,845 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:47,846 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:30:47,846 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:30:47,847 INFO L146 ILogger]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:30:47,847 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:30:47,867 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 112. [2019-05-23 11:30:47,867 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:30:47,868 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2019-05-23 11:30:47,868 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 74 [2019-05-23 11:30:47,869 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:47,869 INFO L146 ILogger]: Abstraction has 112 states and 122 transitions. [2019-05-23 11:30:47,869 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:30:47,869 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 122 transitions. [2019-05-23 11:30:47,874 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 85 [2019-05-23 11:30:47,874 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:47,874 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:47,875 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:47,875 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:47,875 INFO L146 ILogger]: Analyzing trace with hash 406543770, now seen corresponding path program 3 times [2019-05-23 11:30:47,876 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:47,876 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:47,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,877 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:47,877 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:47,882 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:47,882 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:47,882 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:30:47,897 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:47,916 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:30:47,916 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:47,917 INFO L146 ILogger]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2019-05-23 11:30:47,920 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:47,993 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:30:48,012 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:30:48,013 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-05-23 11:30:48,013 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:30:48,013 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:30:48,015 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:48,015 INFO L146 ILogger]: Start difference. First operand 112 states and 122 transitions. Second operand 5 states. [2019-05-23 11:30:48,289 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:48,289 INFO L146 ILogger]: Finished difference Result 360 states and 395 transitions. [2019-05-23 11:30:48,290 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:30:48,290 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 84 [2019-05-23 11:30:48,291 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:48,292 INFO L146 ILogger]: With dead ends: 360 [2019-05-23 11:30:48,292 INFO L146 ILogger]: Without dead ends: 288 [2019-05-23 11:30:48,293 INFO L146 ILogger]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:30:48,294 INFO L146 ILogger]: Start minimizeSevpa. Operand 288 states. [2019-05-23 11:30:48,309 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 288 to 160. [2019-05-23 11:30:48,309 INFO L146 ILogger]: Start removeUnreachable. Operand 160 states. [2019-05-23 11:30:48,310 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2019-05-23 11:30:48,310 INFO L146 ILogger]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 84 [2019-05-23 11:30:48,311 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:48,311 INFO L146 ILogger]: Abstraction has 160 states and 174 transitions. [2019-05-23 11:30:48,311 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:30:48,311 INFO L146 ILogger]: Start isEmpty. Operand 160 states and 174 transitions. [2019-05-23 11:30:48,320 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:48,320 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:48,321 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:48,321 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:48,321 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:48,321 INFO L146 ILogger]: Analyzing trace with hash 1262787116, now seen corresponding path program 4 times [2019-05-23 11:30:48,322 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:48,327 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:48,329 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:48,329 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:48,330 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:48,337 ERROR L146 ILogger]: Caught known exception: Unsupported non-linear arithmetic [2019-05-23 11:30:48,337 INFO L146 ILogger]: Advancing trace checker [2019-05-23 11:30:48,337 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-05-23 11:30:48,354 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:48,390 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:48,390 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:48,392 INFO L146 ILogger]: Trace formula consists of 197 conjuncts, 49 conjunts are in the unsatisfiable core [2019-05-23 11:30:48,398 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:48,475 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-05-23 11:30:48,475 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:48,542 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:48,543 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:48,543 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-05-23 11:30:48,758 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:48,758 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-05-23 11:30:48,759 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:48,834 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:48,834 INFO L146 ILogger]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:48,835 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:11 [2019-05-23 11:30:48,985 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 51 [2019-05-23 11:30:48,986 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:49,009 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:49,009 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:49,010 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:71, output treesize:67 [2019-05-23 11:30:49,287 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:49,287 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 175 [2019-05-23 11:30:49,289 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:49,335 INFO L146 ILogger]: treesize reduction 100, result has 46.8 percent of original size [2019-05-23 11:30:49,336 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 11:30:49,336 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:92, output treesize:63 [2019-05-23 11:30:49,459 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:49,460 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 143 [2019-05-23 11:30:49,461 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:49,498 INFO L146 ILogger]: treesize reduction 80, result has 46.7 percent of original size [2019-05-23 11:30:49,499 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:49,499 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:74, output treesize:46 [2019-05-23 11:30:49,737 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:49,738 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 218 [2019-05-23 11:30:49,740 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:49,772 INFO L146 ILogger]: treesize reduction 186, result has 33.3 percent of original size [2019-05-23 11:30:49,772 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:49,773 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:97, output treesize:93 [2019-05-23 11:30:50,141 INFO L146 ILogger]: treesize reduction 198, result has 51.8 percent of original size [2019-05-23 11:30:50,142 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 315 [2019-05-23 11:30:50,144 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:50,219 INFO L146 ILogger]: treesize reduction 266, result has 35.1 percent of original size [2019-05-23 11:30:50,220 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:30:50,220 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:148, output treesize:144 [2019-05-23 11:30:50,636 WARN L146 ILogger]: Spent 118.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2019-05-23 11:30:50,637 INFO L146 ILogger]: treesize reduction 492, result has 36.3 percent of original size [2019-05-23 11:30:50,638 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 189 treesize of output 412 [2019-05-23 11:30:50,641 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:50,735 INFO L146 ILogger]: treesize reduction 346, result has 36.0 percent of original size [2019-05-23 11:30:50,737 INFO L146 ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-05-23 11:30:50,738 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:199, output treesize:195 [2019-05-23 11:31:54,518 WARN L146 ILogger]: Spent 236.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2019-05-23 11:31:54,519 INFO L146 ILogger]: treesize reduction 280, result has 45.8 percent of original size [2019-05-23 11:31:54,520 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 223 treesize of output 255 [2019-05-23 11:31:54,522 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:31:54,526 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:31:54,526 INFO L146 ILogger]: Start of recursive call 1: 7 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:31:54,527 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 8 variables, input treesize:227, output treesize:3 [2019-05-23 11:31:54,723 INFO L146 ILogger]: Checked inductivity of 204 backedges. 29 proven. 71 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-05-23 11:31:54,743 INFO L146 ILogger]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:31:54,743 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2019-05-23 11:31:54,743 INFO L146 ILogger]: Interpolant automaton has 27 states [2019-05-23 11:31:54,744 INFO L146 ILogger]: Constructing interpolant automaton starting with 27 interpolants. [2019-05-23 11:31:54,744 INFO L146 ILogger]: CoverageRelationStatistics Valid=117, Invalid=580, Unknown=5, NotChecked=0, Total=702 [2019-05-23 11:31:54,744 INFO L146 ILogger]: Start difference. First operand 160 states and 174 transitions. Second operand 27 states. [2019-05-23 11:31:56,828 WARN L146 ILogger]: Spent 285.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 62