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_sum_const_m3_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:49,631 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:49,633 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:49,646 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:49,647 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:49,648 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:49,649 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:49,652 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:49,655 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:49,656 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:49,663 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:49,663 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:49,666 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:49,669 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:49,670 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:49,671 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:49,672 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:49,674 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:49,676 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:49,677 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:49,678 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:49,680 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:49,682 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:49,682 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:49,682 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:49,683 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:49,684 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:49,685 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:49,685 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:49,685 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:49,686 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:49,687 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:49,688 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:49,688 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:49,689 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:49,689 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:49,689 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:49,690 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:49,691 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:49,691 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:49,711 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:49,711 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:49,713 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:49,713 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:49,713 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:49,713 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:49,714 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:49,714 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:49,714 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:49,714 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:49,714 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:49,714 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:49,715 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:49,715 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:49,715 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:49,715 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:49,715 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:49,716 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:49,716 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:49,716 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:49,716 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:49,716 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:49,717 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:49,717 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:49,717 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:49,717 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:49,718 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:49,718 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:49,718 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 11:29:49,772 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:49,785 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:49,789 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:49,790 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:49,791 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:49,792 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum_const_m3_true-unreach-call.c [2019-05-23 11:29:49,857 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b1c694f/630904cdb2144d5aa7e1d8d979092f58/FLAGdff7cac25 [2019-05-23 11:29:50,275 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:50,275 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum_const_m3_true-unreach-call.c [2019-05-23 11:29:50,281 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b1c694f/630904cdb2144d5aa7e1d8d979092f58/FLAGdff7cac25 [2019-05-23 11:29:50,668 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b1c694f/630904cdb2144d5aa7e1d8d979092f58 [2019-05-23 11:29:50,678 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:50,680 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:50,681 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:50,681 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:50,685 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:50,686 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:50,690 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63465b91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50, skipping insertion in model container [2019-05-23 11:29:50,690 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:50,698 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:50,724 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:50,939 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:50,944 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:50,971 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:50,992 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:50,993 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50 WrapperNode [2019-05-23 11:29:50,993 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:50,994 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:50,994 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:50,994 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:51,002 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,011 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,035 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:51,035 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:51,035 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:51,036 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:51,046 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,047 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,049 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,049 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,149 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,156 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,158 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (1/1) ... [2019-05-23 11:29:51,165 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:51,166 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:51,166 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:51,166 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:51,170 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (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 11:29:51,228 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:29:51,228 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:51,228 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:51,228 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:51,228 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:51,228 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:51,793 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:51,793 INFO L146 ILogger]: Removed 13 assume(true) statements. [2019-05-23 11:29:51,794 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:51 BoogieIcfgContainer [2019-05-23 11:29:51,794 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:51,795 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:51,796 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:51,799 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:51,799 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:50" (1/3) ... [2019-05-23 11:29:51,800 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5610316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:51, skipping insertion in model container [2019-05-23 11:29:51,800 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:50" (2/3) ... [2019-05-23 11:29:51,801 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5610316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:51, skipping insertion in model container [2019-05-23 11:29:51,801 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:51" (3/3) ... [2019-05-23 11:29:51,802 INFO L146 ILogger]: Analyzing ICFG zero_sum_const_m3_true-unreach-call.c [2019-05-23 11:29:51,812 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:51,822 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:51,839 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:51,871 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:51,871 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:51,872 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:51,872 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:51,873 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:51,873 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:51,873 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:51,874 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:51,874 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:51,889 INFO L146 ILogger]: Start isEmpty. Operand 78 states. [2019-05-23 11:29:51,896 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:29:51,897 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:51,898 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] [2019-05-23 11:29:51,899 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:51,904 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:51,904 INFO L146 ILogger]: Analyzing trace with hash 839771596, now seen corresponding path program 1 times [2019-05-23 11:29:51,906 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:51,906 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:51,944 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,944 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:51,945 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:51,981 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,024 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 11:29:52,029 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:52,031 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:52,034 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:52,047 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:52,047 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:52,049 INFO L146 ILogger]: Start difference. First operand 78 states. Second operand 2 states. [2019-05-23 11:29:52,072 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,072 INFO L146 ILogger]: Finished difference Result 138 states and 165 transitions. [2019-05-23 11:29:52,073 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:52,074 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 31 [2019-05-23 11:29:52,074 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,083 INFO L146 ILogger]: With dead ends: 138 [2019-05-23 11:29:52,083 INFO L146 ILogger]: Without dead ends: 72 [2019-05-23 11:29:52,086 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 11:29:52,102 INFO L146 ILogger]: Start minimizeSevpa. Operand 72 states. [2019-05-23 11:29:52,119 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 72 to 72. [2019-05-23 11:29:52,121 INFO L146 ILogger]: Start removeUnreachable. Operand 72 states. [2019-05-23 11:29:52,122 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2019-05-23 11:29:52,124 INFO L146 ILogger]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 31 [2019-05-23 11:29:52,124 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,124 INFO L146 ILogger]: Abstraction has 72 states and 78 transitions. [2019-05-23 11:29:52,125 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:52,125 INFO L146 ILogger]: Start isEmpty. Operand 72 states and 78 transitions. [2019-05-23 11:29:52,126 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 32 [2019-05-23 11:29:52,126 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,127 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] [2019-05-23 11:29:52,127 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,127 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,128 INFO L146 ILogger]: Analyzing trace with hash -441291485, now seen corresponding path program 1 times [2019-05-23 11:29:52,128 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,128 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,129 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,129 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:52,130 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,151 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,327 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 11:29:52,328 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:52,328 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:52,330 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:52,330 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:52,331 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:52,331 INFO L146 ILogger]: Start difference. First operand 72 states and 78 transitions. Second operand 5 states. [2019-05-23 11:29:52,681 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:52,681 INFO L146 ILogger]: Finished difference Result 101 states and 112 transitions. [2019-05-23 11:29:52,682 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:52,682 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 31 [2019-05-23 11:29:52,682 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:52,684 INFO L146 ILogger]: With dead ends: 101 [2019-05-23 11:29:52,685 INFO L146 ILogger]: Without dead ends: 95 [2019-05-23 11:29:52,686 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:52,687 INFO L146 ILogger]: Start minimizeSevpa. Operand 95 states. [2019-05-23 11:29:52,695 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 95 to 83. [2019-05-23 11:29:52,695 INFO L146 ILogger]: Start removeUnreachable. Operand 83 states. [2019-05-23 11:29:52,697 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2019-05-23 11:29:52,697 INFO L146 ILogger]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 31 [2019-05-23 11:29:52,698 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:52,698 INFO L146 ILogger]: Abstraction has 83 states and 94 transitions. [2019-05-23 11:29:52,698 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:52,698 INFO L146 ILogger]: Start isEmpty. Operand 83 states and 94 transitions. [2019-05-23 11:29:52,699 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 39 [2019-05-23 11:29:52,700 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:52,700 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:52,700 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:52,701 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:52,701 INFO L146 ILogger]: Analyzing trace with hash 699307030, now seen corresponding path program 1 times [2019-05-23 11:29:52,701 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:52,701 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:52,702 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,703 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:52,703 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:52,721 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,857 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 11:29:52,857 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:52,857 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 11:29:52,872 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:52,896 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:52,898 INFO L146 ILogger]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:52,905 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:53,178 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 11:29:53,209 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:53,209 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:53,209 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:53,210 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:53,210 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:53,210 INFO L146 ILogger]: Start difference. First operand 83 states and 94 transitions. Second operand 7 states. [2019-05-23 11:29:53,785 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:53,785 INFO L146 ILogger]: Finished difference Result 179 states and 203 transitions. [2019-05-23 11:29:53,787 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:53,787 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 38 [2019-05-23 11:29:53,787 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:53,788 INFO L146 ILogger]: With dead ends: 179 [2019-05-23 11:29:53,789 INFO L146 ILogger]: Without dead ends: 114 [2019-05-23 11:29:53,789 INFO L146 ILogger]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:29:53,792 INFO L146 ILogger]: Start minimizeSevpa. Operand 114 states. [2019-05-23 11:29:53,800 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 114 to 86. [2019-05-23 11:29:53,800 INFO L146 ILogger]: Start removeUnreachable. Operand 86 states. [2019-05-23 11:29:53,801 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2019-05-23 11:29:53,801 INFO L146 ILogger]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 38 [2019-05-23 11:29:53,801 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:53,802 INFO L146 ILogger]: Abstraction has 86 states and 92 transitions. [2019-05-23 11:29:53,802 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:53,802 INFO L146 ILogger]: Start isEmpty. Operand 86 states and 92 transitions. [2019-05-23 11:29:53,804 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 86 [2019-05-23 11:29:53,805 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:53,805 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:53,805 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:53,805 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:53,806 INFO L146 ILogger]: Analyzing trace with hash 1289203665, now seen corresponding path program 1 times [2019-05-23 11:29:53,806 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:53,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:53,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,807 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:53,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:53,831 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:53,946 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:29:53,947 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:53,947 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 11:29:53,960 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:54,014 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:54,015 INFO L146 ILogger]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:54,019 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:54,118 INFO L146 ILogger]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-05-23 11:29:54,136 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:54,136 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:54,137 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:54,137 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:54,138 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:54,138 INFO L146 ILogger]: Start difference. First operand 86 states and 92 transitions. Second operand 9 states. [2019-05-23 11:29:54,866 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:54,866 INFO L146 ILogger]: Finished difference Result 186 states and 198 transitions. [2019-05-23 11:29:54,867 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:54,867 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 85 [2019-05-23 11:29:54,867 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:54,868 INFO L146 ILogger]: With dead ends: 186 [2019-05-23 11:29:54,868 INFO L146 ILogger]: Without dead ends: 119 [2019-05-23 11:29:54,869 INFO L146 ILogger]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:54,870 INFO L146 ILogger]: Start minimizeSevpa. Operand 119 states. [2019-05-23 11:29:54,876 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 119 to 91. [2019-05-23 11:29:54,877 INFO L146 ILogger]: Start removeUnreachable. Operand 91 states. [2019-05-23 11:29:54,878 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2019-05-23 11:29:54,878 INFO L146 ILogger]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 85 [2019-05-23 11:29:54,878 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:54,878 INFO L146 ILogger]: Abstraction has 91 states and 97 transitions. [2019-05-23 11:29:54,878 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:54,878 INFO L146 ILogger]: Start isEmpty. Operand 91 states and 97 transitions. [2019-05-23 11:29:54,881 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 91 [2019-05-23 11:29:54,881 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:54,881 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:54,881 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:54,882 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:54,882 INFO L146 ILogger]: Analyzing trace with hash 280849821, now seen corresponding path program 2 times [2019-05-23 11:29:54,882 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:54,882 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:54,883 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,883 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:54,883 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:54,906 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,205 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-05-23 11:29:55,206 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:55,206 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:29:55,215 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:55,257 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:55,257 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:55,258 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:55,264 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:55,367 INFO L146 ILogger]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-05-23 11:29:55,386 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:55,386 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:55,387 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:55,387 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:55,387 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:55,387 INFO L146 ILogger]: Start difference. First operand 91 states and 97 transitions. Second operand 9 states. [2019-05-23 11:29:55,889 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:55,889 INFO L146 ILogger]: Finished difference Result 181 states and 192 transitions. [2019-05-23 11:29:55,890 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:55,890 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 90 [2019-05-23 11:29:55,891 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:55,892 INFO L146 ILogger]: With dead ends: 181 [2019-05-23 11:29:55,892 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:29:55,893 INFO L146 ILogger]: 0 DeclaredPredicates, 98 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:55,894 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:29:55,901 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 98. [2019-05-23 11:29:55,901 INFO L146 ILogger]: Start removeUnreachable. Operand 98 states. [2019-05-23 11:29:55,902 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2019-05-23 11:29:55,902 INFO L146 ILogger]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 90 [2019-05-23 11:29:55,903 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:55,903 INFO L146 ILogger]: Abstraction has 98 states and 104 transitions. [2019-05-23 11:29:55,903 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:55,903 INFO L146 ILogger]: Start isEmpty. Operand 98 states and 104 transitions. [2019-05-23 11:29:55,904 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 98 [2019-05-23 11:29:55,905 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:55,905 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:55,905 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:55,905 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:55,906 INFO L146 ILogger]: Analyzing trace with hash -2369707, now seen corresponding path program 3 times [2019-05-23 11:29:55,906 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:55,906 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:55,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,907 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:55,907 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:55,928 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,033 INFO L146 ILogger]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:29:56,034 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:56,034 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 11:29:56,042 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:56,078 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:56,078 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,080 INFO L146 ILogger]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:56,083 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:56,198 INFO L146 ILogger]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:29:56,217 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:56,217 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:56,217 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:56,218 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:56,218 INFO L146 ILogger]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:56,218 INFO L146 ILogger]: Start difference. First operand 98 states and 104 transitions. Second operand 9 states. [2019-05-23 11:29:56,520 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:56,520 INFO L146 ILogger]: Finished difference Result 181 states and 192 transitions. [2019-05-23 11:29:56,521 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-05-23 11:29:56,521 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 97 [2019-05-23 11:29:56,522 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:56,523 INFO L146 ILogger]: With dead ends: 181 [2019-05-23 11:29:56,523 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:29:56,524 INFO L146 ILogger]: 0 DeclaredPredicates, 107 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:29:56,525 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:29:56,531 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 112. [2019-05-23 11:29:56,531 INFO L146 ILogger]: Start removeUnreachable. Operand 112 states. [2019-05-23 11:29:56,532 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2019-05-23 11:29:56,532 INFO L146 ILogger]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 97 [2019-05-23 11:29:56,533 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:56,533 INFO L146 ILogger]: Abstraction has 112 states and 118 transitions. [2019-05-23 11:29:56,533 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:56,534 INFO L146 ILogger]: Start isEmpty. Operand 112 states and 118 transitions. [2019-05-23 11:29:56,535 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 112 [2019-05-23 11:29:56,536 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:56,536 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:29:56,536 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:56,536 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:56,537 INFO L146 ILogger]: Analyzing trace with hash 1657061710, now seen corresponding path program 4 times [2019-05-23 11:29:56,537 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:56,537 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:56,538 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,538 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:56,538 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:56,558 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,800 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:29:56,801 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:56,801 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 11:29:56,812 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:56,855 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:56,855 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:56,856 INFO L146 ILogger]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:56,863 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:57,208 INFO L146 ILogger]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2019-05-23 11:29:57,227 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:57,228 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:57,228 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:57,228 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:57,229 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:57,229 INFO L146 ILogger]: Start difference. First operand 112 states and 118 transitions. Second operand 9 states. [2019-05-23 11:29:57,439 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:57,439 INFO L146 ILogger]: Finished difference Result 176 states and 185 transitions. [2019-05-23 11:29:57,440 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:57,440 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 111 [2019-05-23 11:29:57,441 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:57,442 INFO L146 ILogger]: With dead ends: 176 [2019-05-23 11:29:57,442 INFO L146 ILogger]: Without dead ends: 129 [2019-05-23 11:29:57,443 INFO L146 ILogger]: 0 DeclaredPredicates, 119 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:57,443 INFO L146 ILogger]: Start minimizeSevpa. Operand 129 states. [2019-05-23 11:29:57,449 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 129 to 119. [2019-05-23 11:29:57,450 INFO L146 ILogger]: Start removeUnreachable. Operand 119 states. [2019-05-23 11:29:57,451 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2019-05-23 11:29:57,451 INFO L146 ILogger]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 111 [2019-05-23 11:29:57,451 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:57,452 INFO L146 ILogger]: Abstraction has 119 states and 125 transitions. [2019-05-23 11:29:57,452 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:57,452 INFO L146 ILogger]: Start isEmpty. Operand 119 states and 125 transitions. [2019-05-23 11:29:57,453 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 119 [2019-05-23 11:29:57,453 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:57,454 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:57,454 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:57,454 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:57,455 INFO L146 ILogger]: Analyzing trace with hash 1363749512, now seen corresponding path program 5 times [2019-05-23 11:29:57,455 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:57,455 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:57,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,456 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:57,456 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:57,476 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:57,654 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-05-23 11:29:57,655 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:57,655 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:29:57,663 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:57,718 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:57,718 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:57,719 INFO L146 ILogger]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:57,722 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:57,798 INFO L146 ILogger]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-05-23 11:29:57,816 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:57,817 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:57,817 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:57,817 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:57,818 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:57,818 INFO L146 ILogger]: Start difference. First operand 119 states and 125 transitions. Second operand 9 states. [2019-05-23 11:29:58,249 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:58,249 INFO L146 ILogger]: Finished difference Result 137 states and 143 transitions. [2019-05-23 11:29:58,249 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:58,249 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 118 [2019-05-23 11:29:58,250 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:58,251 INFO L146 ILogger]: With dead ends: 137 [2019-05-23 11:29:58,251 INFO L146 ILogger]: Without dead ends: 131 [2019-05-23 11:29:58,251 INFO L146 ILogger]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:58,252 INFO L146 ILogger]: Start minimizeSevpa. Operand 131 states. [2019-05-23 11:29:58,256 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 131 to 126. [2019-05-23 11:29:58,257 INFO L146 ILogger]: Start removeUnreachable. Operand 126 states. [2019-05-23 11:29:58,257 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2019-05-23 11:29:58,258 INFO L146 ILogger]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 118 [2019-05-23 11:29:58,258 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:58,258 INFO L146 ILogger]: Abstraction has 126 states and 132 transitions. [2019-05-23 11:29:58,258 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:58,258 INFO L146 ILogger]: Start isEmpty. Operand 126 states and 132 transitions. [2019-05-23 11:29:58,260 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 126 [2019-05-23 11:29:58,260 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:58,260 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:58,261 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:58,261 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:58,261 INFO L146 ILogger]: Analyzing trace with hash -1252745533, now seen corresponding path program 6 times [2019-05-23 11:29:58,261 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:58,262 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:58,262 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:58,263 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:58,263 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:58,317 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,028 WARN L146 ILogger]: Spent 191.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2019-05-23 11:29:59,476 WARN L146 ILogger]: Spent 138.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2019-05-23 11:29:59,996 WARN L146 ILogger]: Spent 150.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2019-05-23 11:30:01,791 WARN L146 ILogger]: Spent 100.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-05-23 11:30:04,962 INFO L146 ILogger]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:04,963 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:04,963 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 11:30:04,972 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:05,008 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:30:05,008 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,011 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 94 conjunts are in the unsatisfiable core [2019-05-23 11:30:05,015 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:08,049 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 11:30:08,050 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:08,059 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:08,059 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 11:30:08,059 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:08,292 INFO L146 ILogger]: Checked inductivity of 61 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-05-23 11:30:08,312 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:08,313 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 44] total 95 [2019-05-23 11:30:08,314 INFO L146 ILogger]: Interpolant automaton has 95 states [2019-05-23 11:30:08,314 INFO L146 ILogger]: Constructing interpolant automaton starting with 95 interpolants. [2019-05-23 11:30:08,318 INFO L146 ILogger]: CoverageRelationStatistics Valid=390, Invalid=8540, Unknown=0, NotChecked=0, Total=8930 [2019-05-23 11:30:08,318 INFO L146 ILogger]: Start difference. First operand 126 states and 132 transitions. Second operand 95 states. [2019-05-23 11:30:12,618 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2019-05-23 11:30:15,965 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-05-23 11:30:16,991 WARN L146 ILogger]: Spent 221.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2019-05-23 11:30:18,352 WARN L146 ILogger]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2019-05-23 11:30:18,784 WARN L146 ILogger]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-05-23 11:30:22,428 WARN L146 ILogger]: Spent 199.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2019-05-23 11:30:28,370 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:28,370 INFO L146 ILogger]: Finished difference Result 317 states and 333 transitions. [2019-05-23 11:30:28,370 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-05-23 11:30:28,371 INFO L146 ILogger]: Start accepts. Automaton has 95 states. Word has length 125 [2019-05-23 11:30:28,371 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:28,373 INFO L146 ILogger]: With dead ends: 317 [2019-05-23 11:30:28,373 INFO L146 ILogger]: Without dead ends: 311 [2019-05-23 11:30:28,383 INFO L146 ILogger]: 0 DeclaredPredicates, 289 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12240 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=1393, Invalid=37613, Unknown=0, NotChecked=0, Total=39006 [2019-05-23 11:30:28,383 INFO L146 ILogger]: Start minimizeSevpa. Operand 311 states. [2019-05-23 11:30:28,391 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 311 to 205. [2019-05-23 11:30:28,391 INFO L146 ILogger]: Start removeUnreachable. Operand 205 states. [2019-05-23 11:30:28,392 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 205 states to 205 states and 216 transitions. [2019-05-23 11:30:28,392 INFO L146 ILogger]: Start accepts. Automaton has 205 states and 216 transitions. Word has length 125 [2019-05-23 11:30:28,392 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:28,392 INFO L146 ILogger]: Abstraction has 205 states and 216 transitions. [2019-05-23 11:30:28,393 INFO L146 ILogger]: Interpolant automaton has 95 states. [2019-05-23 11:30:28,393 INFO L146 ILogger]: Start isEmpty. Operand 205 states and 216 transitions. [2019-05-23 11:30:28,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:28,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:28,395 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:30:28,395 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:28,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:28,396 INFO L146 ILogger]: Analyzing trace with hash -1195027018, now seen corresponding path program 7 times [2019-05-23 11:30:28,396 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:28,396 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:28,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:28,397 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:28,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:28,410 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:28,584 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:28,585 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:28,585 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 11:30:28,595 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:28,627 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:28,627 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:28,629 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:28,908 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:28,927 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:28,927 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:28,927 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:28,927 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:28,928 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:28,928 INFO L146 ILogger]: Start difference. First operand 205 states and 216 transitions. Second operand 20 states. [2019-05-23 11:30:29,520 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:29,521 INFO L146 ILogger]: Finished difference Result 451 states and 475 transitions. [2019-05-23 11:30:29,521 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:29,521 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 132 [2019-05-23 11:30:29,522 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:29,524 INFO L146 ILogger]: With dead ends: 451 [2019-05-23 11:30:29,525 INFO L146 ILogger]: Without dead ends: 406 [2019-05-23 11:30:29,526 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:29,527 INFO L146 ILogger]: Start minimizeSevpa. Operand 406 states. [2019-05-23 11:30:29,537 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 406 to 329. [2019-05-23 11:30:29,538 INFO L146 ILogger]: Start removeUnreachable. Operand 329 states. [2019-05-23 11:30:29,539 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 329 states to 329 states and 347 transitions. [2019-05-23 11:30:29,539 INFO L146 ILogger]: Start accepts. Automaton has 329 states and 347 transitions. Word has length 132 [2019-05-23 11:30:29,539 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:29,539 INFO L146 ILogger]: Abstraction has 329 states and 347 transitions. [2019-05-23 11:30:29,540 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:29,540 INFO L146 ILogger]: Start isEmpty. Operand 329 states and 347 transitions. [2019-05-23 11:30:29,541 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:29,541 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:29,542 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:30:29,542 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:29,542 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:29,542 INFO L146 ILogger]: Analyzing trace with hash -1205599704, now seen corresponding path program 8 times [2019-05-23 11:30:29,543 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:29,543 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:29,543 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,544 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:29,544 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:29,555 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:30,293 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:30:30,293 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:30,294 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 11:30:30,302 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:30,335 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:30,335 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:30,336 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:30,337 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:30,491 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:30,509 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:30,509 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:30,510 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:30,511 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:30,511 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:30,511 INFO L146 ILogger]: Start difference. First operand 329 states and 347 transitions. Second operand 21 states. [2019-05-23 11:30:31,225 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:31,225 INFO L146 ILogger]: Finished difference Result 424 states and 445 transitions. [2019-05-23 11:30:31,226 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:31,226 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 132 [2019-05-23 11:30:31,226 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:31,229 INFO L146 ILogger]: With dead ends: 424 [2019-05-23 11:30:31,229 INFO L146 ILogger]: Without dead ends: 395 [2019-05-23 11:30:31,231 INFO L146 ILogger]: 0 DeclaredPredicates, 168 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:31,232 INFO L146 ILogger]: Start minimizeSevpa. Operand 395 states. [2019-05-23 11:30:31,241 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 395 to 368. [2019-05-23 11:30:31,241 INFO L146 ILogger]: Start removeUnreachable. Operand 368 states. [2019-05-23 11:30:31,242 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 368 states to 368 states and 387 transitions. [2019-05-23 11:30:31,243 INFO L146 ILogger]: Start accepts. Automaton has 368 states and 387 transitions. Word has length 132 [2019-05-23 11:30:31,243 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:31,243 INFO L146 ILogger]: Abstraction has 368 states and 387 transitions. [2019-05-23 11:30:31,243 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:31,243 INFO L146 ILogger]: Start isEmpty. Operand 368 states and 387 transitions. [2019-05-23 11:30:31,245 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:31,245 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:31,245 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:30:31,245 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:31,246 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:31,246 INFO L146 ILogger]: Analyzing trace with hash -682695953, now seen corresponding path program 9 times [2019-05-23 11:30:31,246 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:31,246 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:31,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:31,247 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:31,247 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:31,259 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:31,411 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:31,412 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:31,412 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 11:30:31,420 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:31,456 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:31,456 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:31,457 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:31,460 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:31,570 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:31,589 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:31,589 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:31,589 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:31,589 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:31,590 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:31,590 INFO L146 ILogger]: Start difference. First operand 368 states and 387 transitions. Second operand 20 states. [2019-05-23 11:30:32,059 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:32,060 INFO L146 ILogger]: Finished difference Result 430 states and 448 transitions. [2019-05-23 11:30:32,061 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:32,061 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 132 [2019-05-23 11:30:32,061 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:32,063 INFO L146 ILogger]: With dead ends: 430 [2019-05-23 11:30:32,063 INFO L146 ILogger]: Without dead ends: 369 [2019-05-23 11:30:32,063 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:32,064 INFO L146 ILogger]: Start minimizeSevpa. Operand 369 states. [2019-05-23 11:30:32,072 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 369 to 336. [2019-05-23 11:30:32,072 INFO L146 ILogger]: Start removeUnreachable. Operand 336 states. [2019-05-23 11:30:32,073 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 336 states to 336 states and 353 transitions. [2019-05-23 11:30:32,073 INFO L146 ILogger]: Start accepts. Automaton has 336 states and 353 transitions. Word has length 132 [2019-05-23 11:30:32,073 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:32,073 INFO L146 ILogger]: Abstraction has 336 states and 353 transitions. [2019-05-23 11:30:32,073 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:32,074 INFO L146 ILogger]: Start isEmpty. Operand 336 states and 353 transitions. [2019-05-23 11:30:32,075 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:32,075 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:32,075 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:30:32,076 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:32,076 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:32,076 INFO L146 ILogger]: Analyzing trace with hash 1193499261, now seen corresponding path program 10 times [2019-05-23 11:30:32,076 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:32,076 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:32,077 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,077 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:32,077 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:32,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,825 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:32,825 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:32,825 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:32,833 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:32,863 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:32,863 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:32,864 INFO L146 ILogger]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:32,865 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:32,979 INFO L146 ILogger]: Checked inductivity of 76 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:32,998 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:32,998 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:32,999 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:32,999 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:32,999 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:33,000 INFO L146 ILogger]: Start difference. First operand 336 states and 353 transitions. Second operand 20 states. [2019-05-23 11:30:33,637 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:33,638 INFO L146 ILogger]: Finished difference Result 430 states and 446 transitions. [2019-05-23 11:30:33,647 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:33,647 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 132 [2019-05-23 11:30:33,647 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:33,649 INFO L146 ILogger]: With dead ends: 430 [2019-05-23 11:30:33,649 INFO L146 ILogger]: Without dead ends: 353 [2019-05-23 11:30:33,650 INFO L146 ILogger]: 0 DeclaredPredicates, 156 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:33,651 INFO L146 ILogger]: Start minimizeSevpa. Operand 353 states. [2019-05-23 11:30:33,660 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 353 to 320. [2019-05-23 11:30:33,660 INFO L146 ILogger]: Start removeUnreachable. Operand 320 states. [2019-05-23 11:30:33,661 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 320 states to 320 states and 335 transitions. [2019-05-23 11:30:33,661 INFO L146 ILogger]: Start accepts. Automaton has 320 states and 335 transitions. Word has length 132 [2019-05-23 11:30:33,662 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:33,662 INFO L146 ILogger]: Abstraction has 320 states and 335 transitions. [2019-05-23 11:30:33,662 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:33,662 INFO L146 ILogger]: Start isEmpty. Operand 320 states and 335 transitions. [2019-05-23 11:30:33,664 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:33,664 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:33,664 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:30:33,664 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:33,664 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:33,665 INFO L146 ILogger]: Analyzing trace with hash -1257967292, now seen corresponding path program 11 times [2019-05-23 11:30:33,665 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:33,665 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:33,666 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:33,666 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:33,666 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:33,677 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,309 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:34,309 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:34,309 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 11:30:34,319 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:34,354 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:34,354 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:34,355 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:34,358 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:34,533 INFO L146 ILogger]: Checked inductivity of 76 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:30:34,552 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:34,552 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:34,552 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:34,553 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:34,553 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:34,553 INFO L146 ILogger]: Start difference. First operand 320 states and 335 transitions. Second operand 24 states. [2019-05-23 11:30:36,050 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:36,050 INFO L146 ILogger]: Finished difference Result 597 states and 621 transitions. [2019-05-23 11:30:36,051 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:36,051 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 132 [2019-05-23 11:30:36,051 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:36,054 INFO L146 ILogger]: With dead ends: 597 [2019-05-23 11:30:36,054 INFO L146 ILogger]: Without dead ends: 449 [2019-05-23 11:30:36,056 INFO L146 ILogger]: 0 DeclaredPredicates, 173 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:36,056 INFO L146 ILogger]: Start minimizeSevpa. Operand 449 states. [2019-05-23 11:30:36,066 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 449 to 327. [2019-05-23 11:30:36,066 INFO L146 ILogger]: Start removeUnreachable. Operand 327 states. [2019-05-23 11:30:36,067 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 327 states to 327 states and 341 transitions. [2019-05-23 11:30:36,067 INFO L146 ILogger]: Start accepts. Automaton has 327 states and 341 transitions. Word has length 132 [2019-05-23 11:30:36,067 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:36,068 INFO L146 ILogger]: Abstraction has 327 states and 341 transitions. [2019-05-23 11:30:36,068 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:36,068 INFO L146 ILogger]: Start isEmpty. Operand 327 states and 341 transitions. [2019-05-23 11:30:36,069 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:30:36,069 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:36,069 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:30:36,070 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:36,070 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:36,070 INFO L146 ILogger]: Analyzing trace with hash 2097551883, now seen corresponding path program 12 times [2019-05-23 11:30:36,070 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:36,070 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:36,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,071 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:36,071 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:36,082 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:36,512 INFO L146 ILogger]: Checked inductivity of 76 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:30:36,512 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:36,512 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:36,521 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:36,564 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:36,564 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:36,565 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:36,567 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:36,735 INFO L146 ILogger]: Checked inductivity of 76 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-05-23 11:30:36,753 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:36,754 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:36,754 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:36,755 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:36,755 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:36,755 INFO L146 ILogger]: Start difference. First operand 327 states and 341 transitions. Second operand 24 states. [2019-05-23 11:30:38,043 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:38,043 INFO L146 ILogger]: Finished difference Result 534 states and 557 transitions. [2019-05-23 11:30:38,044 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:30:38,044 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 132 [2019-05-23 11:30:38,044 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:38,046 INFO L146 ILogger]: With dead ends: 534 [2019-05-23 11:30:38,047 INFO L146 ILogger]: Without dead ends: 370 [2019-05-23 11:30:38,048 INFO L146 ILogger]: 0 DeclaredPredicates, 169 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:30:38,048 INFO L146 ILogger]: Start minimizeSevpa. Operand 370 states. [2019-05-23 11:30:38,055 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 370 to 232. [2019-05-23 11:30:38,056 INFO L146 ILogger]: Start removeUnreachable. Operand 232 states. [2019-05-23 11:30:38,058 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 232 states to 232 states and 243 transitions. [2019-05-23 11:30:38,058 INFO L146 ILogger]: Start accepts. Automaton has 232 states and 243 transitions. Word has length 132 [2019-05-23 11:30:38,058 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:38,059 INFO L146 ILogger]: Abstraction has 232 states and 243 transitions. [2019-05-23 11:30:38,059 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:38,059 INFO L146 ILogger]: Start isEmpty. Operand 232 states and 243 transitions. [2019-05-23 11:30:38,060 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 138 [2019-05-23 11:30:38,060 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:38,061 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-05-23 11:30:38,061 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:38,061 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:38,061 INFO L146 ILogger]: Analyzing trace with hash 154859114, now seen corresponding path program 13 times [2019-05-23 11:30:38,061 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:38,061 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:38,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,062 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:38,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,073 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,263 INFO L146 ILogger]: Checked inductivity of 87 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:30:38,263 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:38,263 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 11:30:38,272 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:38,304 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:38,305 INFO L146 ILogger]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:38,306 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:38,422 INFO L146 ILogger]: Checked inductivity of 87 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-05-23 11:30:38,441 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:38,441 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:38,441 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:38,442 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:38,442 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:38,442 INFO L146 ILogger]: Start difference. First operand 232 states and 243 transitions. Second operand 20 states. [2019-05-23 11:30:38,963 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:38,963 INFO L146 ILogger]: Finished difference Result 344 states and 360 transitions. [2019-05-23 11:30:38,963 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:38,963 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 137 [2019-05-23 11:30:38,964 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:38,965 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:30:38,965 INFO L146 ILogger]: Without dead ends: 173 [2019-05-23 11:30:38,966 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 131 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 11:30:38,967 INFO L146 ILogger]: Start minimizeSevpa. Operand 173 states. [2019-05-23 11:30:38,971 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 173 to 168. [2019-05-23 11:30:38,971 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:30:38,971 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 175 transitions. [2019-05-23 11:30:38,972 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 175 transitions. Word has length 137 [2019-05-23 11:30:38,972 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:38,972 INFO L146 ILogger]: Abstraction has 168 states and 175 transitions. [2019-05-23 11:30:38,972 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:38,972 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 175 transitions. [2019-05-23 11:30:38,973 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 145 [2019-05-23 11:30:38,973 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:38,973 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:38,973 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:38,974 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:38,974 INFO L146 ILogger]: Analyzing trace with hash 109054721, now seen corresponding path program 14 times [2019-05-23 11:30:38,974 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:38,974 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:38,975 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,975 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:38,975 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:38,986 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:39,175 INFO L146 ILogger]: Checked inductivity of 102 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:30:39,176 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:39,176 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 11:30:39,189 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:39,230 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:39,230 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:39,231 INFO L146 ILogger]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:39,236 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:39,355 INFO L146 ILogger]: Checked inductivity of 102 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-05-23 11:30:39,375 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:39,375 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:39,376 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:39,376 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:39,376 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:39,376 INFO L146 ILogger]: Start difference. First operand 168 states and 175 transitions. Second operand 20 states. [2019-05-23 11:30:39,943 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:39,943 INFO L146 ILogger]: Finished difference Result 280 states and 292 transitions. [2019-05-23 11:30:39,943 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:39,944 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 144 [2019-05-23 11:30:39,944 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:39,944 INFO L146 ILogger]: With dead ends: 280 [2019-05-23 11:30:39,945 INFO L146 ILogger]: Without dead ends: 180 [2019-05-23 11:30:39,945 INFO L146 ILogger]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:39,946 INFO L146 ILogger]: Start minimizeSevpa. Operand 180 states. [2019-05-23 11:30:39,950 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 180 to 175. [2019-05-23 11:30:39,950 INFO L146 ILogger]: Start removeUnreachable. Operand 175 states. [2019-05-23 11:30:39,950 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2019-05-23 11:30:39,951 INFO L146 ILogger]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 144 [2019-05-23 11:30:39,951 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:39,951 INFO L146 ILogger]: Abstraction has 175 states and 182 transitions. [2019-05-23 11:30:39,951 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:39,951 INFO L146 ILogger]: Start isEmpty. Operand 175 states and 182 transitions. [2019-05-23 11:30:39,952 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 152 [2019-05-23 11:30:39,952 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:39,952 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:39,952 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:39,953 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:39,953 INFO L146 ILogger]: Analyzing trace with hash -1704798248, now seen corresponding path program 15 times [2019-05-23 11:30:39,953 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:39,953 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:39,954 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,954 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:39,954 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:39,965 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,274 INFO L146 ILogger]: Checked inductivity of 117 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:30:40,274 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:40,274 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 11:30:40,284 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:40,324 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:40,324 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:40,325 INFO L146 ILogger]: Trace formula consists of 243 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:40,328 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:40,454 INFO L146 ILogger]: Checked inductivity of 117 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-05-23 11:30:40,472 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:40,472 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:40,473 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:40,473 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:40,474 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:40,474 INFO L146 ILogger]: Start difference. First operand 175 states and 182 transitions. Second operand 20 states. [2019-05-23 11:30:41,136 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:41,136 INFO L146 ILogger]: Finished difference Result 232 states and 242 transitions. [2019-05-23 11:30:41,137 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-05-23 11:30:41,137 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 151 [2019-05-23 11:30:41,137 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:41,138 INFO L146 ILogger]: With dead ends: 232 [2019-05-23 11:30:41,138 INFO L146 ILogger]: Without dead ends: 171 [2019-05-23 11:30:41,139 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:30:41,140 INFO L146 ILogger]: Start minimizeSevpa. Operand 171 states. [2019-05-23 11:30:41,143 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 171 to 166. [2019-05-23 11:30:41,144 INFO L146 ILogger]: Start removeUnreachable. Operand 166 states. [2019-05-23 11:30:41,144 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 166 states to 166 states and 172 transitions. [2019-05-23 11:30:41,144 INFO L146 ILogger]: Start accepts. Automaton has 166 states and 172 transitions. Word has length 151 [2019-05-23 11:30:41,145 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:41,145 INFO L146 ILogger]: Abstraction has 166 states and 172 transitions. [2019-05-23 11:30:41,145 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:41,145 INFO L146 ILogger]: Start isEmpty. Operand 166 states and 172 transitions. [2019-05-23 11:30:41,146 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 166 [2019-05-23 11:30:41,146 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:41,146 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:41,146 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:41,147 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:41,147 INFO L146 ILogger]: Analyzing trace with hash -189188879, now seen corresponding path program 16 times [2019-05-23 11:30:41,147 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:41,147 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:41,148 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,148 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:41,148 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:41,160 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,400 INFO L146 ILogger]: Checked inductivity of 147 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-05-23 11:30:41,401 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:41,401 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 11:30:41,410 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:41,448 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:41,448 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:41,449 INFO L146 ILogger]: Trace formula consists of 263 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:41,450 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:41,579 INFO L146 ILogger]: Checked inductivity of 147 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-05-23 11:30:41,597 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:41,597 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:41,598 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:41,598 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:41,598 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:41,599 INFO L146 ILogger]: Start difference. First operand 166 states and 172 transitions. Second operand 20 states. [2019-05-23 11:30:42,142 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:42,142 INFO L146 ILogger]: Finished difference Result 184 states and 190 transitions. [2019-05-23 11:30:42,142 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:42,143 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 165 [2019-05-23 11:30:42,143 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:42,145 INFO L146 ILogger]: With dead ends: 184 [2019-05-23 11:30:42,145 INFO L146 ILogger]: Without dead ends: 178 [2019-05-23 11:30:42,145 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:42,146 INFO L146 ILogger]: Start minimizeSevpa. Operand 178 states. [2019-05-23 11:30:42,149 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 178 to 173. [2019-05-23 11:30:42,149 INFO L146 ILogger]: Start removeUnreachable. Operand 173 states. [2019-05-23 11:30:42,150 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 173 states to 173 states and 179 transitions. [2019-05-23 11:30:42,150 INFO L146 ILogger]: Start accepts. Automaton has 173 states and 179 transitions. Word has length 165 [2019-05-23 11:30:42,150 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:42,150 INFO L146 ILogger]: Abstraction has 173 states and 179 transitions. [2019-05-23 11:30:42,150 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:42,151 INFO L146 ILogger]: Start isEmpty. Operand 173 states and 179 transitions. [2019-05-23 11:30:42,151 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 173 [2019-05-23 11:30:42,151 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:42,151 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:42,152 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:42,152 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:42,152 INFO L146 ILogger]: Analyzing trace with hash -1157579718, now seen corresponding path program 17 times [2019-05-23 11:30:42,152 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:42,152 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:42,152 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,153 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:42,153 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:42,184 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:43,425 WARN L146 ILogger]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-05-23 11:30:51,334 INFO L146 ILogger]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:51,335 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:51,335 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 11:30:51,344 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:51,390 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:51,390 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:51,394 WARN L146 ILogger]: Trace formula consists of 276 conjuncts, 153 conjunts are in the unsatisfiable core [2019-05-23 11:30:51,397 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:51,642 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11 [2019-05-23 11:30:51,642 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:51,651 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:51,652 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:30:51,652 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24