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_sum4_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:29:26,837 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:29:26,839 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:29:26,851 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:29:26,851 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:29:26,852 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:29:26,853 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:29:26,855 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:29:26,857 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:29:26,858 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:29:26,859 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:29:26,860 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:29:26,861 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:29:26,862 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:29:26,863 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:29:26,864 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:29:26,865 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:29:26,867 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:29:26,869 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:29:26,871 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:29:26,872 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:29:26,873 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:29:26,876 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:29:26,876 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:29:26,877 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:29:26,878 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:29:26,878 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:29:26,879 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:29:26,880 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:29:26,880 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:29:26,881 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:29:26,882 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:29:26,883 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:29:26,884 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:29:26,884 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:29:26,885 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:29:26,885 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:29:26,886 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:29:26,887 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:29:26,887 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:29:26,902 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:29:26,903 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:29:26,904 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:29:26,904 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:29:26,904 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:29:26,905 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:29:26,905 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:29:26,905 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:29:26,905 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:29:26,905 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:29:26,906 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:29:26,906 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:29:26,906 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:29:26,906 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:29:26,906 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:29:26,907 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:29:26,907 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:29:26,907 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:29:26,907 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:29:26,908 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:29:26,908 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:29:26,908 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:29:26,908 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:29:26,909 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:29:26,909 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:29:26,909 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:29:26,909 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:29:26,909 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:29:26,909 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 11:29:26,940 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:29:26,953 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:29:26,957 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:29:26,958 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:29:26,959 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:29:26,960 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-crafted/zero_sum4_true-unreach-call.c [2019-05-23 11:29:27,018 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1066fe6/597747b2ed8c41f58aaf6e31f72730cf/FLAG473bfcca4 [2019-05-23 11:29:27,488 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:29:27,489 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/array-crafted/zero_sum4_true-unreach-call.c [2019-05-23 11:29:27,496 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1066fe6/597747b2ed8c41f58aaf6e31f72730cf/FLAG473bfcca4 [2019-05-23 11:29:27,835 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e1066fe6/597747b2ed8c41f58aaf6e31f72730cf [2019-05-23 11:29:27,845 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:29:27,847 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:29:27,848 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:27,848 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:29:27,852 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:29:27,855 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,859 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7603aa45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:27, skipping insertion in model container [2019-05-23 11:29:27,859 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:29:27" (1/1) ... [2019-05-23 11:29:27,867 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:29:27,887 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:29:28,153 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:28,161 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:29:28,221 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:29:28,254 INFO L146 ILogger]: Completed translation [2019-05-23 11:29:28,255 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28 WrapperNode [2019-05-23 11:29:28,255 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:29:28,257 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:28,258 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:29:28,258 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:29:28,268 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,286 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,323 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:29:28,324 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:29:28,324 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:29:28,324 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:29:28,336 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,337 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,339 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,339 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,346 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,473 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,480 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (1/1) ... [2019-05-23 11:29:28,484 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:29:28,485 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:29:28,485 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:29:28,485 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:29:28,489 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (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 11:29:28,562 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:29:28,562 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:29:28,562 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:29:28,563 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:29:28,563 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:29:29,181 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:29:29,182 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:29:29,183 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:29 BoogieIcfgContainer [2019-05-23 11:29:29,183 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:29:29,184 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:29:29,184 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:29:29,187 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:29:29,188 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:29:27" (1/3) ... [2019-05-23 11:29:29,189 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b21805e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:29, skipping insertion in model container [2019-05-23 11:29:29,189 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:29:28" (2/3) ... [2019-05-23 11:29:29,189 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b21805e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:29:29, skipping insertion in model container [2019-05-23 11:29:29,190 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:29:29" (3/3) ... [2019-05-23 11:29:29,192 INFO L146 ILogger]: Analyzing ICFG zero_sum4_true-unreach-call.c [2019-05-23 11:29:29,200 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:29:29,208 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:29:29,226 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:29:29,259 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:29:29,260 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:29:29,260 INFO L146 ILogger]: Hoare is true [2019-05-23 11:29:29,260 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:29:29,261 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:29:29,261 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:29:29,261 INFO L146 ILogger]: Difference is false [2019-05-23 11:29:29,261 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:29:29,262 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:29:29,281 INFO L146 ILogger]: Start isEmpty. Operand 88 states. [2019-05-23 11:29:29,290 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:29:29,290 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:29,291 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] [2019-05-23 11:29:29,294 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:29,300 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:29,300 INFO L146 ILogger]: Analyzing trace with hash 109607024, now seen corresponding path program 1 times [2019-05-23 11:29:29,302 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:29,302 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:29,346 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:29,346 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:29,346 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:29,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:29,425 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 11:29:29,427 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:29,430 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:29:29,434 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:29:29,448 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:29:29,449 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:29:29,451 INFO L146 ILogger]: Start difference. First operand 88 states. Second operand 2 states. [2019-05-23 11:29:29,478 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:29,478 INFO L146 ILogger]: Finished difference Result 156 states and 187 transitions. [2019-05-23 11:29:29,478 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:29:29,480 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 33 [2019-05-23 11:29:29,480 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:29,490 INFO L146 ILogger]: With dead ends: 156 [2019-05-23 11:29:29,490 INFO L146 ILogger]: Without dead ends: 82 [2019-05-23 11:29:29,494 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 11:29:29,510 INFO L146 ILogger]: Start minimizeSevpa. Operand 82 states. [2019-05-23 11:29:29,528 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-05-23 11:29:29,530 INFO L146 ILogger]: Start removeUnreachable. Operand 82 states. [2019-05-23 11:29:29,532 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2019-05-23 11:29:29,534 INFO L146 ILogger]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 33 [2019-05-23 11:29:29,534 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:29,534 INFO L146 ILogger]: Abstraction has 82 states and 89 transitions. [2019-05-23 11:29:29,535 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:29:29,535 INFO L146 ILogger]: Start isEmpty. Operand 82 states and 89 transitions. [2019-05-23 11:29:29,536 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 34 [2019-05-23 11:29:29,537 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:29,537 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] [2019-05-23 11:29:29,537 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:29,537 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:29,540 INFO L146 ILogger]: Analyzing trace with hash -1324278734, now seen corresponding path program 1 times [2019-05-23 11:29:29,540 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:29,540 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:29,542 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:29,542 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:29,542 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:29,583 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:29,792 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 11:29:29,792 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:29:29,793 INFO L146 ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-05-23 11:29:29,794 INFO L146 ILogger]: Interpolant automaton has 5 states [2019-05-23 11:29:29,795 INFO L146 ILogger]: Constructing interpolant automaton starting with 5 interpolants. [2019-05-23 11:29:29,795 INFO L146 ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-05-23 11:29:29,796 INFO L146 ILogger]: Start difference. First operand 82 states and 89 transitions. Second operand 5 states. [2019-05-23 11:29:30,170 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:30,170 INFO L146 ILogger]: Finished difference Result 119 states and 133 transitions. [2019-05-23 11:29:30,170 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-05-23 11:29:30,170 INFO L146 ILogger]: Start accepts. Automaton has 5 states. Word has length 33 [2019-05-23 11:29:30,171 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:30,174 INFO L146 ILogger]: With dead ends: 119 [2019-05-23 11:29:30,174 INFO L146 ILogger]: Without dead ends: 113 [2019-05-23 11:29:30,176 INFO L146 ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:30,176 INFO L146 ILogger]: Start minimizeSevpa. Operand 113 states. [2019-05-23 11:29:30,188 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 113 to 97. [2019-05-23 11:29:30,189 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:29:30,190 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2019-05-23 11:29:30,191 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 33 [2019-05-23 11:29:30,191 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:30,191 INFO L146 ILogger]: Abstraction has 97 states and 111 transitions. [2019-05-23 11:29:30,192 INFO L146 ILogger]: Interpolant automaton has 5 states. [2019-05-23 11:29:30,192 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 111 transitions. [2019-05-23 11:29:30,194 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 41 [2019-05-23 11:29:30,195 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:30,195 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:30,195 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:30,196 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:30,196 INFO L146 ILogger]: Analyzing trace with hash -468088918, now seen corresponding path program 1 times [2019-05-23 11:29:30,196 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:30,196 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:30,197 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:30,197 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:30,197 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:30,213 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:30,354 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 11:29:30,355 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:30,355 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 11:29:30,373 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:30,399 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:30,401 INFO L146 ILogger]: Trace formula consists of 71 conjuncts, 3 conjunts are in the unsatisfiable core [2019-05-23 11:29:30,407 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:30,599 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 11:29:30,620 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:29:30,621 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2019-05-23 11:29:30,621 INFO L146 ILogger]: Interpolant automaton has 7 states [2019-05-23 11:29:30,621 INFO L146 ILogger]: Constructing interpolant automaton starting with 7 interpolants. [2019-05-23 11:29:30,622 INFO L146 ILogger]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-05-23 11:29:30,622 INFO L146 ILogger]: Start difference. First operand 97 states and 111 transitions. Second operand 7 states. [2019-05-23 11:29:31,430 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:31,430 INFO L146 ILogger]: Finished difference Result 207 states and 235 transitions. [2019-05-23 11:29:31,431 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:29:31,432 INFO L146 ILogger]: Start accepts. Automaton has 7 states. Word has length 40 [2019-05-23 11:29:31,432 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:31,433 INFO L146 ILogger]: With dead ends: 207 [2019-05-23 11:29:31,433 INFO L146 ILogger]: Without dead ends: 132 [2019-05-23 11:29:31,435 INFO L146 ILogger]: 0 DeclaredPredicates, 48 GetRequests, 39 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 11:29:31,435 INFO L146 ILogger]: Start minimizeSevpa. Operand 132 states. [2019-05-23 11:29:31,443 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 132 to 97. [2019-05-23 11:29:31,444 INFO L146 ILogger]: Start removeUnreachable. Operand 97 states. [2019-05-23 11:29:31,445 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2019-05-23 11:29:31,445 INFO L146 ILogger]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 40 [2019-05-23 11:29:31,445 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:31,446 INFO L146 ILogger]: Abstraction has 97 states and 104 transitions. [2019-05-23 11:29:31,446 INFO L146 ILogger]: Interpolant automaton has 7 states. [2019-05-23 11:29:31,446 INFO L146 ILogger]: Start isEmpty. Operand 97 states and 104 transitions. [2019-05-23 11:29:31,449 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 97 [2019-05-23 11:29:31,449 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:31,449 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:31,450 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:31,450 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:31,450 INFO L146 ILogger]: Analyzing trace with hash 1564190570, now seen corresponding path program 1 times [2019-05-23 11:29:31,450 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:31,450 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:31,451 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,452 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:31,452 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:31,478 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:31,658 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:29:31,658 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:31,659 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 11:29:31,679 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:31,742 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:31,743 INFO L146 ILogger]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:31,748 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:31,875 INFO L146 ILogger]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-05-23 11:29:31,897 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:31,897 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:31,897 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:31,898 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:31,898 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:31,898 INFO L146 ILogger]: Start difference. First operand 97 states and 104 transitions. Second operand 9 states. [2019-05-23 11:29:32,583 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:32,583 INFO L146 ILogger]: Finished difference Result 215 states and 229 transitions. [2019-05-23 11:29:32,583 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:32,583 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 96 [2019-05-23 11:29:32,584 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:32,586 INFO L146 ILogger]: With dead ends: 215 [2019-05-23 11:29:32,586 INFO L146 ILogger]: Without dead ends: 139 [2019-05-23 11:29:32,588 INFO L146 ILogger]: 0 DeclaredPredicates, 104 GetRequests, 93 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 11:29:32,588 INFO L146 ILogger]: Start minimizeSevpa. Operand 139 states. [2019-05-23 11:29:32,596 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 139 to 104. [2019-05-23 11:29:32,597 INFO L146 ILogger]: Start removeUnreachable. Operand 104 states. [2019-05-23 11:29:32,598 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2019-05-23 11:29:32,598 INFO L146 ILogger]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 96 [2019-05-23 11:29:32,599 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:32,599 INFO L146 ILogger]: Abstraction has 104 states and 111 transitions. [2019-05-23 11:29:32,599 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:32,599 INFO L146 ILogger]: Start isEmpty. Operand 104 states and 111 transitions. [2019-05-23 11:29:32,601 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:29:32,601 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:32,601 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:32,602 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:32,602 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:32,602 INFO L146 ILogger]: Analyzing trace with hash -1934630531, now seen corresponding path program 2 times [2019-05-23 11:29:32,602 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:32,602 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:32,603 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:32,604 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:32,604 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:32,629 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,779 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-05-23 11:29:32,779 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:32,779 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 11:29:32,792 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:32,843 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:32,843 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:32,845 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:32,850 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:32,942 INFO L146 ILogger]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-05-23 11:29:32,961 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:32,961 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:32,962 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:32,962 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:32,963 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:32,963 INFO L146 ILogger]: Start difference. First operand 104 states and 111 transitions. Second operand 9 states. [2019-05-23 11:29:33,321 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:33,322 INFO L146 ILogger]: Finished difference Result 208 states and 221 transitions. [2019-05-23 11:29:33,329 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:33,329 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 103 [2019-05-23 11:29:33,329 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:33,331 INFO L146 ILogger]: With dead ends: 208 [2019-05-23 11:29:33,331 INFO L146 ILogger]: Without dead ends: 141 [2019-05-23 11:29:33,332 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:33,332 INFO L146 ILogger]: Start minimizeSevpa. Operand 141 states. [2019-05-23 11:29:33,339 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 141 to 111. [2019-05-23 11:29:33,339 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:29:33,341 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 118 transitions. [2019-05-23 11:29:33,342 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 118 transitions. Word has length 103 [2019-05-23 11:29:33,342 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:33,342 INFO L146 ILogger]: Abstraction has 111 states and 118 transitions. [2019-05-23 11:29:33,342 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:33,342 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 118 transitions. [2019-05-23 11:29:33,345 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 111 [2019-05-23 11:29:33,345 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:33,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:33,346 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:33,346 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:33,346 INFO L146 ILogger]: Analyzing trace with hash -976513405, now seen corresponding path program 3 times [2019-05-23 11:29:33,347 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:33,347 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:33,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:33,348 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:33,348 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:33,384 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:33,576 INFO L146 ILogger]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-05-23 11:29:33,576 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:33,576 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 11:29:33,586 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:33,642 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-05-23 11:29:33,642 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:33,649 INFO L146 ILogger]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:33,653 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:33,972 INFO L146 ILogger]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-05-23 11:29:33,992 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:33,993 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:33,993 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:33,994 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:33,994 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:33,994 INFO L146 ILogger]: Start difference. First operand 111 states and 118 transitions. Second operand 9 states. [2019-05-23 11:29:34,286 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:34,286 INFO L146 ILogger]: Finished difference Result 201 states and 213 transitions. [2019-05-23 11:29:34,287 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:34,287 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 110 [2019-05-23 11:29:34,288 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:34,289 INFO L146 ILogger]: With dead ends: 201 [2019-05-23 11:29:34,290 INFO L146 ILogger]: Without dead ends: 143 [2019-05-23 11:29:34,290 INFO L146 ILogger]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:29:34,291 INFO L146 ILogger]: Start minimizeSevpa. Operand 143 states. [2019-05-23 11:29:34,297 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 143 to 118. [2019-05-23 11:29:34,298 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:29:34,298 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2019-05-23 11:29:34,298 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 110 [2019-05-23 11:29:34,299 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:34,299 INFO L146 ILogger]: Abstraction has 118 states and 125 transitions. [2019-05-23 11:29:34,299 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:34,299 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 125 transitions. [2019-05-23 11:29:34,301 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 118 [2019-05-23 11:29:34,301 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:34,302 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:34,302 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:34,302 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:34,302 INFO L146 ILogger]: Analyzing trace with hash -2023679964, now seen corresponding path program 4 times [2019-05-23 11:29:34,302 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:34,303 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:34,303 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,304 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:34,304 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,322 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:34,437 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:29:34,438 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:34,438 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 11:29:34,449 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:29:34,479 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:29:34,479 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:34,480 INFO L146 ILogger]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:34,485 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:34,613 INFO L146 ILogger]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-05-23 11:29:34,634 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:34,634 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:34,634 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:34,634 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:34,635 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:34,635 INFO L146 ILogger]: Start difference. First operand 118 states and 125 transitions. Second operand 9 states. [2019-05-23 11:29:34,970 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:34,970 INFO L146 ILogger]: Finished difference Result 178 states and 188 transitions. [2019-05-23 11:29:34,971 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:34,971 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 117 [2019-05-23 11:29:34,971 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:34,972 INFO L146 ILogger]: With dead ends: 178 [2019-05-23 11:29:34,972 INFO L146 ILogger]: Without dead ends: 145 [2019-05-23 11:29:34,973 INFO L146 ILogger]: 0 DeclaredPredicates, 125 GetRequests, 114 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 11:29:34,974 INFO L146 ILogger]: Start minimizeSevpa. Operand 145 states. [2019-05-23 11:29:34,980 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 145 to 125. [2019-05-23 11:29:34,980 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:29:34,981 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2019-05-23 11:29:34,981 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 117 [2019-05-23 11:29:34,982 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:34,982 INFO L146 ILogger]: Abstraction has 125 states and 132 transitions. [2019-05-23 11:29:34,982 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:34,982 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 132 transitions. [2019-05-23 11:29:34,984 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 125 [2019-05-23 11:29:34,984 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:34,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:29:34,984 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:34,985 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:34,985 INFO L146 ILogger]: Analyzing trace with hash -1781289259, now seen corresponding path program 5 times [2019-05-23 11:29:34,985 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:34,985 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:34,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:34,986 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:34,986 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,003 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,104 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:29:35,104 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:35,105 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 11:29:35,114 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:29:35,183 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-05-23 11:29:35,183 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,184 INFO L146 ILogger]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:35,188 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:35,283 INFO L146 ILogger]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-05-23 11:29:35,304 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:35,305 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:35,305 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:35,305 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:35,306 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:35,306 INFO L146 ILogger]: Start difference. First operand 125 states and 132 transitions. Second operand 9 states. [2019-05-23 11:29:35,651 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:35,651 INFO L146 ILogger]: Finished difference Result 171 states and 180 transitions. [2019-05-23 11:29:35,652 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:35,652 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 124 [2019-05-23 11:29:35,653 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:35,654 INFO L146 ILogger]: With dead ends: 171 [2019-05-23 11:29:35,654 INFO L146 ILogger]: Without dead ends: 147 [2019-05-23 11:29:35,655 INFO L146 ILogger]: 0 DeclaredPredicates, 132 GetRequests, 121 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 11:29:35,656 INFO L146 ILogger]: Start minimizeSevpa. Operand 147 states. [2019-05-23 11:29:35,662 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 147 to 132. [2019-05-23 11:29:35,662 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:29:35,668 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2019-05-23 11:29:35,668 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 124 [2019-05-23 11:29:35,669 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:35,669 INFO L146 ILogger]: Abstraction has 132 states and 139 transitions. [2019-05-23 11:29:35,669 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:35,669 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 139 transitions. [2019-05-23 11:29:35,670 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:29:35,671 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:35,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:35,673 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:35,673 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:35,673 INFO L146 ILogger]: Analyzing trace with hash 2008789547, now seen corresponding path program 6 times [2019-05-23 11:29:35,674 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:35,674 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:35,675 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,675 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:35,675 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:35,713 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,850 INFO L146 ILogger]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:29:35,850 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:35,850 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:35,859 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:29:35,900 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2019-05-23 11:29:35,900 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:35,901 INFO L146 ILogger]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:35,903 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:35,990 INFO L146 ILogger]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-05-23 11:29:36,009 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:36,010 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:36,010 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:36,010 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:36,011 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:36,011 INFO L146 ILogger]: Start difference. First operand 132 states and 139 transitions. Second operand 9 states. [2019-05-23 11:29:36,401 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:36,401 INFO L146 ILogger]: Finished difference Result 164 states and 172 transitions. [2019-05-23 11:29:36,402 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:36,402 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 131 [2019-05-23 11:29:36,403 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:36,405 INFO L146 ILogger]: With dead ends: 164 [2019-05-23 11:29:36,405 INFO L146 ILogger]: Without dead ends: 149 [2019-05-23 11:29:36,405 INFO L146 ILogger]: 0 DeclaredPredicates, 139 GetRequests, 128 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 11:29:36,406 INFO L146 ILogger]: Start minimizeSevpa. Operand 149 states. [2019-05-23 11:29:36,411 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 149 to 139. [2019-05-23 11:29:36,412 INFO L146 ILogger]: Start removeUnreachable. Operand 139 states. [2019-05-23 11:29:36,412 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 139 states to 139 states and 146 transitions. [2019-05-23 11:29:36,413 INFO L146 ILogger]: Start accepts. Automaton has 139 states and 146 transitions. Word has length 131 [2019-05-23 11:29:36,413 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:36,413 INFO L146 ILogger]: Abstraction has 139 states and 146 transitions. [2019-05-23 11:29:36,413 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:36,414 INFO L146 ILogger]: Start isEmpty. Operand 139 states and 146 transitions. [2019-05-23 11:29:36,415 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 139 [2019-05-23 11:29:36,415 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:36,416 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, 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] [2019-05-23 11:29:36,416 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:36,416 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:36,416 INFO L146 ILogger]: Analyzing trace with hash -1442212082, now seen corresponding path program 7 times [2019-05-23 11:29:36,417 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:36,417 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:36,418 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,418 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:36,418 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:36,434 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,552 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:29:36,552 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:36,552 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:36,564 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:36,600 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:36,601 INFO L146 ILogger]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:29:36,603 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:36,729 INFO L146 ILogger]: Checked inductivity of 64 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-05-23 11:29:36,749 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:36,750 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:29:36,750 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:29:36,750 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:29:36,751 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:29:36,751 INFO L146 ILogger]: Start difference. First operand 139 states and 146 transitions. Second operand 9 states. [2019-05-23 11:29:37,025 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:37,025 INFO L146 ILogger]: Finished difference Result 157 states and 164 transitions. [2019-05-23 11:29:37,025 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:29:37,026 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 138 [2019-05-23 11:29:37,026 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:37,028 INFO L146 ILogger]: With dead ends: 157 [2019-05-23 11:29:37,028 INFO L146 ILogger]: Without dead ends: 151 [2019-05-23 11:29:37,029 INFO L146 ILogger]: 0 DeclaredPredicates, 146 GetRequests, 135 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 11:29:37,030 INFO L146 ILogger]: Start minimizeSevpa. Operand 151 states. [2019-05-23 11:29:37,034 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 151 to 146. [2019-05-23 11:29:37,034 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:29:37,035 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 153 transitions. [2019-05-23 11:29:37,035 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 153 transitions. Word has length 138 [2019-05-23 11:29:37,035 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:37,036 INFO L146 ILogger]: Abstraction has 146 states and 153 transitions. [2019-05-23 11:29:37,036 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:29:37,036 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 153 transitions. [2019-05-23 11:29:37,037 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:29:37,037 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:37,037 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, 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] [2019-05-23 11:29:37,038 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:37,038 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:37,038 INFO L146 ILogger]: Analyzing trace with hash -548758606, now seen corresponding path program 8 times [2019-05-23 11:29:37,038 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:37,038 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:37,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,039 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:29:37,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:37,090 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:38,105 WARN L146 ILogger]: Spent 184.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2019-05-23 11:29:38,468 WARN L146 ILogger]: Spent 200.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2019-05-23 11:29:38,611 WARN L146 ILogger]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2019-05-23 11:29:39,042 WARN L146 ILogger]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-05-23 11:29:39,815 WARN L146 ILogger]: Spent 223.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2019-05-23 11:29:44,598 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:44,598 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:44,599 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:44,608 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:29:44,651 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:29:44,651 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:44,653 WARN L146 ILogger]: Trace formula consists of 236 conjuncts, 122 conjunts are in the unsatisfiable core [2019-05-23 11:29:44,658 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:47,683 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-05-23 11:29:47,684 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:29:47,697 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:29:47,697 INFO L146 ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:29:47,697 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:29:47,877 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:29:47,897 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:47,897 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 38] total 84 [2019-05-23 11:29:47,898 INFO L146 ILogger]: Interpolant automaton has 84 states [2019-05-23 11:29:47,898 INFO L146 ILogger]: Constructing interpolant automaton starting with 84 interpolants. [2019-05-23 11:29:47,901 INFO L146 ILogger]: CoverageRelationStatistics Valid=369, Invalid=6603, Unknown=0, NotChecked=0, Total=6972 [2019-05-23 11:29:47,901 INFO L146 ILogger]: Start difference. First operand 146 states and 153 transitions. Second operand 84 states. [2019-05-23 11:29:59,276 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:29:59,276 INFO L146 ILogger]: Finished difference Result 287 states and 301 transitions. [2019-05-23 11:29:59,276 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2019-05-23 11:29:59,276 INFO L146 ILogger]: Start accepts. Automaton has 84 states. Word has length 145 [2019-05-23 11:29:59,277 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:29:59,279 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:29:59,279 INFO L146 ILogger]: Without dead ends: 281 [2019-05-23 11:29:59,285 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 102 SyntacticMatches, 36 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6412 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=1015, Invalid=17891, Unknown=0, NotChecked=0, Total=18906 [2019-05-23 11:29:59,285 INFO L146 ILogger]: Start minimizeSevpa. Operand 281 states. [2019-05-23 11:29:59,294 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 281 to 257. [2019-05-23 11:29:59,294 INFO L146 ILogger]: Start removeUnreachable. Operand 257 states. [2019-05-23 11:29:59,295 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 257 states to 257 states and 271 transitions. [2019-05-23 11:29:59,295 INFO L146 ILogger]: Start accepts. Automaton has 257 states and 271 transitions. Word has length 145 [2019-05-23 11:29:59,296 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:29:59,296 INFO L146 ILogger]: Abstraction has 257 states and 271 transitions. [2019-05-23 11:29:59,296 INFO L146 ILogger]: Interpolant automaton has 84 states. [2019-05-23 11:29:59,296 INFO L146 ILogger]: Start isEmpty. Operand 257 states and 271 transitions. [2019-05-23 11:29:59,297 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:29:59,297 INFO L146 ILogger]: Found error trace [2019-05-23 11:29:59,298 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, 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] [2019-05-23 11:29:59,298 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:29:59,298 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:29:59,298 INFO L146 ILogger]: Analyzing trace with hash 2092877226, now seen corresponding path program 9 times [2019-05-23 11:29:59,298 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:29:59,299 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:29:59,299 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,300 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:29:59,300 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:29:59,319 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,583 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:29:59,583 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:29:59,583 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:29:59,593 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:29:59,636 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:29:59,636 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:29:59,638 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:29:59,641 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:29:59,953 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:29:59,972 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:29:59,972 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:29:59,972 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:29:59,972 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:29:59,973 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:29:59,973 INFO L146 ILogger]: Start difference. First operand 257 states and 271 transitions. Second operand 24 states. [2019-05-23 11:30:01,203 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:01,203 INFO L146 ILogger]: Finished difference Result 543 states and 572 transitions. [2019-05-23 11:30:01,203 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:01,204 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 152 [2019-05-23 11:30:01,204 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:01,208 INFO L146 ILogger]: With dead ends: 543 [2019-05-23 11:30:01,208 INFO L146 ILogger]: Without dead ends: 466 [2019-05-23 11:30:01,209 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:01,210 INFO L146 ILogger]: Start minimizeSevpa. Operand 466 states. [2019-05-23 11:30:01,221 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 466 to 351. [2019-05-23 11:30:01,221 INFO L146 ILogger]: Start removeUnreachable. Operand 351 states. [2019-05-23 11:30:01,223 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 351 states to 351 states and 370 transitions. [2019-05-23 11:30:01,223 INFO L146 ILogger]: Start accepts. Automaton has 351 states and 370 transitions. Word has length 152 [2019-05-23 11:30:01,223 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:01,223 INFO L146 ILogger]: Abstraction has 351 states and 370 transitions. [2019-05-23 11:30:01,223 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:01,224 INFO L146 ILogger]: Start isEmpty. Operand 351 states and 370 transitions. [2019-05-23 11:30:01,225 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:01,225 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:01,225 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, 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] [2019-05-23 11:30:01,226 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:01,226 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:01,226 INFO L146 ILogger]: Analyzing trace with hash 2145244814, now seen corresponding path program 10 times [2019-05-23 11:30:01,226 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:01,226 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:01,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:01,227 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:01,227 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:01,239 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:01,761 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:01,762 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:01,762 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 11:30:01,770 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:01,806 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:01,806 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:01,807 INFO L146 ILogger]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:01,809 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:01,976 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:01,995 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:01,995 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:01,996 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:01,996 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:01,996 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:01,997 INFO L146 ILogger]: Start difference. First operand 351 states and 370 transitions. Second operand 21 states. [2019-05-23 11:30:02,994 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:02,994 INFO L146 ILogger]: Finished difference Result 490 states and 514 transitions. [2019-05-23 11:30:02,996 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:30:02,996 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 152 [2019-05-23 11:30:02,997 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:02,998 INFO L146 ILogger]: With dead ends: 490 [2019-05-23 11:30:02,998 INFO L146 ILogger]: Without dead ends: 461 [2019-05-23 11:30:02,999 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:30:03,000 INFO L146 ILogger]: Start minimizeSevpa. Operand 461 states. [2019-05-23 11:30:03,009 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 461 to 421. [2019-05-23 11:30:03,009 INFO L146 ILogger]: Start removeUnreachable. Operand 421 states. [2019-05-23 11:30:03,011 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 421 states to 421 states and 443 transitions. [2019-05-23 11:30:03,011 INFO L146 ILogger]: Start accepts. Automaton has 421 states and 443 transitions. Word has length 152 [2019-05-23 11:30:03,011 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:03,011 INFO L146 ILogger]: Abstraction has 421 states and 443 transitions. [2019-05-23 11:30:03,012 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:03,012 INFO L146 ILogger]: Start isEmpty. Operand 421 states and 443 transitions. [2019-05-23 11:30:03,013 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:03,013 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:03,013 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, 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] [2019-05-23 11:30:03,013 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:03,013 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:03,013 INFO L146 ILogger]: Analyzing trace with hash -1626818731, now seen corresponding path program 11 times [2019-05-23 11:30:03,013 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:03,014 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:03,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:03,014 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:03,014 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:03,026 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:03,203 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:03,203 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:03,203 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 11:30:03,223 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:03,272 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:03,272 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:03,273 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:03,276 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:03,563 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:03,582 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:03,583 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2019-05-23 11:30:03,583 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:30:03,583 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:30:03,584 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:30:03,584 INFO L146 ILogger]: Start difference. First operand 421 states and 443 transitions. Second operand 21 states. [2019-05-23 11:30:04,607 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:04,607 INFO L146 ILogger]: Finished difference Result 489 states and 511 transitions. [2019-05-23 11:30:04,607 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:30:04,607 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 152 [2019-05-23 11:30:04,608 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:04,610 INFO L146 ILogger]: With dead ends: 489 [2019-05-23 11:30:04,610 INFO L146 ILogger]: Without dead ends: 421 [2019-05-23 11:30:04,611 INFO L146 ILogger]: 0 DeclaredPredicates, 188 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=1455, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:30:04,612 INFO L146 ILogger]: Start minimizeSevpa. Operand 421 states. [2019-05-23 11:30:04,620 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 421 to 349. [2019-05-23 11:30:04,620 INFO L146 ILogger]: Start removeUnreachable. Operand 349 states. [2019-05-23 11:30:04,621 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 349 states to 349 states and 365 transitions. [2019-05-23 11:30:04,621 INFO L146 ILogger]: Start accepts. Automaton has 349 states and 365 transitions. Word has length 152 [2019-05-23 11:30:04,622 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:04,622 INFO L146 ILogger]: Abstraction has 349 states and 365 transitions. [2019-05-23 11:30:04,622 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:30:04,622 INFO L146 ILogger]: Start isEmpty. Operand 349 states and 365 transitions. [2019-05-23 11:30:04,623 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:04,623 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:04,624 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, 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] [2019-05-23 11:30:04,625 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:04,625 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:04,626 INFO L146 ILogger]: Analyzing trace with hash -2139149796, now seen corresponding path program 12 times [2019-05-23 11:30:04,626 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:04,626 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:04,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:04,627 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:04,627 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:04,648 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,017 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:05,018 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:05,018 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 11:30:05,027 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:05,066 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:05,066 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:05,067 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:05,069 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:05,251 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:05,270 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:05,270 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:05,271 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:05,271 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:05,271 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:05,271 INFO L146 ILogger]: Start difference. First operand 349 states and 365 transitions. Second operand 24 states. [2019-05-23 11:30:06,667 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:06,668 INFO L146 ILogger]: Finished difference Result 580 states and 600 transitions. [2019-05-23 11:30:06,668 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-05-23 11:30:06,668 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 152 [2019-05-23 11:30:06,670 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:06,674 INFO L146 ILogger]: With dead ends: 580 [2019-05-23 11:30:06,675 INFO L146 ILogger]: Without dead ends: 480 [2019-05-23 11:30:06,678 INFO L146 ILogger]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=327, Invalid=2223, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:30:06,679 INFO L146 ILogger]: Start minimizeSevpa. Operand 480 states. [2019-05-23 11:30:06,692 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 480 to 333. [2019-05-23 11:30:06,693 INFO L146 ILogger]: Start removeUnreachable. Operand 333 states. [2019-05-23 11:30:06,695 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 333 states to 333 states and 347 transitions. [2019-05-23 11:30:06,695 INFO L146 ILogger]: Start accepts. Automaton has 333 states and 347 transitions. Word has length 152 [2019-05-23 11:30:06,696 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:06,696 INFO L146 ILogger]: Abstraction has 333 states and 347 transitions. [2019-05-23 11:30:06,696 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:06,696 INFO L146 ILogger]: Start isEmpty. Operand 333 states and 347 transitions. [2019-05-23 11:30:06,698 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:06,698 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:06,699 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, 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] [2019-05-23 11:30:06,699 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:06,699 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:06,700 INFO L146 ILogger]: Analyzing trace with hash 249376483, now seen corresponding path program 13 times [2019-05-23 11:30:06,700 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:06,700 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:06,701 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:06,701 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:06,701 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:06,720 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:08,045 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:08,046 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:08,046 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 11:30:08,056 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:08,090 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:08,091 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:08,092 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:08,316 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:08,335 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:08,335 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:08,336 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:08,336 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:08,337 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:08,338 INFO L146 ILogger]: Start difference. First operand 333 states and 347 transitions. Second operand 20 states. [2019-05-23 11:30:08,900 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:08,900 INFO L146 ILogger]: Finished difference Result 477 states and 491 transitions. [2019-05-23 11:30:08,902 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:08,902 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 152 [2019-05-23 11:30:08,903 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:08,905 INFO L146 ILogger]: With dead ends: 477 [2019-05-23 11:30:08,905 INFO L146 ILogger]: Without dead ends: 384 [2019-05-23 11:30:08,906 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=176, Invalid=816, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:30:08,906 INFO L146 ILogger]: Start minimizeSevpa. Operand 384 states. [2019-05-23 11:30:08,913 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 384 to 317. [2019-05-23 11:30:08,914 INFO L146 ILogger]: Start removeUnreachable. Operand 317 states. [2019-05-23 11:30:08,914 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 317 states to 317 states and 330 transitions. [2019-05-23 11:30:08,915 INFO L146 ILogger]: Start accepts. Automaton has 317 states and 330 transitions. Word has length 152 [2019-05-23 11:30:08,915 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:08,915 INFO L146 ILogger]: Abstraction has 317 states and 330 transitions. [2019-05-23 11:30:08,915 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:08,915 INFO L146 ILogger]: Start isEmpty. Operand 317 states and 330 transitions. [2019-05-23 11:30:08,916 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:08,916 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:08,917 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, 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] [2019-05-23 11:30:08,917 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:08,917 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:08,917 INFO L146 ILogger]: Analyzing trace with hash 1153429105, now seen corresponding path program 14 times [2019-05-23 11:30:08,917 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:08,918 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:08,918 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,918 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:08,918 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:08,929 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,103 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:09,104 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:09,104 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 11:30:09,114 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:30:09,152 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:30:09,153 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:09,153 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:09,155 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:09,391 INFO L146 ILogger]: Checked inductivity of 87 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:09,410 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:09,411 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:09,411 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:09,411 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:09,412 INFO L146 ILogger]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:09,412 INFO L146 ILogger]: Start difference. First operand 317 states and 330 transitions. Second operand 20 states. [2019-05-23 11:30:10,026 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:10,026 INFO L146 ILogger]: Finished difference Result 477 states and 489 transitions. [2019-05-23 11:30:10,026 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:30:10,027 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 152 [2019-05-23 11:30:10,027 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:10,029 INFO L146 ILogger]: With dead ends: 477 [2019-05-23 11:30:10,029 INFO L146 ILogger]: Without dead ends: 368 [2019-05-23 11:30:10,031 INFO L146 ILogger]: 0 DeclaredPredicates, 176 GetRequests, 146 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 11:30:10,031 INFO L146 ILogger]: Start minimizeSevpa. Operand 368 states. [2019-05-23 11:30:10,039 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 368 to 309. [2019-05-23 11:30:10,039 INFO L146 ILogger]: Start removeUnreachable. Operand 309 states. [2019-05-23 11:30:10,040 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 309 states to 309 states and 320 transitions. [2019-05-23 11:30:10,040 INFO L146 ILogger]: Start accepts. Automaton has 309 states and 320 transitions. Word has length 152 [2019-05-23 11:30:10,040 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:10,040 INFO L146 ILogger]: Abstraction has 309 states and 320 transitions. [2019-05-23 11:30:10,040 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:10,041 INFO L146 ILogger]: Start isEmpty. Operand 309 states and 320 transitions. [2019-05-23 11:30:10,042 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:10,042 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:10,042 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, 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] [2019-05-23 11:30:10,042 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:10,043 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:10,043 INFO L146 ILogger]: Analyzing trace with hash 696035640, now seen corresponding path program 15 times [2019-05-23 11:30:10,043 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:10,043 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:10,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,044 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:10,044 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:10,056 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:10,233 INFO L146 ILogger]: Checked inductivity of 87 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:10,233 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:10,233 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 11:30:10,243 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:30:10,287 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:30:10,287 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:10,288 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:10,290 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:10,453 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:10,472 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:10,472 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:10,473 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:10,473 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:10,474 INFO L146 ILogger]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:10,474 INFO L146 ILogger]: Start difference. First operand 309 states and 320 transitions. Second operand 24 states. [2019-05-23 11:30:11,709 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:11,709 INFO L146 ILogger]: Finished difference Result 567 states and 585 transitions. [2019-05-23 11:30:11,710 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:30:11,710 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 152 [2019-05-23 11:30:11,710 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:11,712 INFO L146 ILogger]: With dead ends: 567 [2019-05-23 11:30:11,712 INFO L146 ILogger]: Without dead ends: 378 [2019-05-23 11:30:11,714 INFO L146 ILogger]: 0 DeclaredPredicates, 189 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=309, Invalid=2043, Unknown=0, NotChecked=0, Total=2352 [2019-05-23 11:30:11,714 INFO L146 ILogger]: Start minimizeSevpa. Operand 378 states. [2019-05-23 11:30:11,721 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 378 to 277. [2019-05-23 11:30:11,721 INFO L146 ILogger]: Start removeUnreachable. Operand 277 states. [2019-05-23 11:30:11,722 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 277 states to 277 states and 288 transitions. [2019-05-23 11:30:11,722 INFO L146 ILogger]: Start accepts. Automaton has 277 states and 288 transitions. Word has length 152 [2019-05-23 11:30:11,722 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:11,722 INFO L146 ILogger]: Abstraction has 277 states and 288 transitions. [2019-05-23 11:30:11,722 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:11,723 INFO L146 ILogger]: Start isEmpty. Operand 277 states and 288 transitions. [2019-05-23 11:30:11,724 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:30:11,724 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:11,724 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, 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] [2019-05-23 11:30:11,724 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:11,724 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:11,725 INFO L146 ILogger]: Analyzing trace with hash 898692607, now seen corresponding path program 16 times [2019-05-23 11:30:11,725 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:11,725 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:11,725 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,726 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:11,726 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:11,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,144 INFO L146 ILogger]: Checked inductivity of 87 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:12,144 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:12,145 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:30:12,153 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:30:12,188 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:30:12,188 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:12,189 INFO L146 ILogger]: Trace formula consists of 245 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:12,190 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:12,431 INFO L146 ILogger]: Checked inductivity of 87 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-05-23 11:30:12,450 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:12,450 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2019-05-23 11:30:12,450 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:30:12,450 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:30:12,451 INFO L146 ILogger]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:30:12,451 INFO L146 ILogger]: Start difference. First operand 277 states and 288 transitions. Second operand 20 states. [2019-05-23 11:30:13,027 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:13,027 INFO L146 ILogger]: Finished difference Result 373 states and 388 transitions. [2019-05-23 11:30:13,027 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:30:13,027 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 152 [2019-05-23 11:30:13,028 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:13,029 INFO L146 ILogger]: With dead ends: 373 [2019-05-23 11:30:13,029 INFO L146 ILogger]: Without dead ends: 186 [2019-05-23 11:30:13,030 INFO L146 ILogger]: 0 DeclaredPredicates, 180 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:30:13,031 INFO L146 ILogger]: Start minimizeSevpa. Operand 186 states. [2019-05-23 11:30:13,035 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 186 to 181. [2019-05-23 11:30:13,035 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:30:13,035 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 188 transitions. [2019-05-23 11:30:13,035 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 188 transitions. Word has length 152 [2019-05-23 11:30:13,036 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:13,036 INFO L146 ILogger]: Abstraction has 181 states and 188 transitions. [2019-05-23 11:30:13,036 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:30:13,036 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 188 transitions. [2019-05-23 11:30:13,037 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:30:13,037 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:13,037 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, 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] [2019-05-23 11:30:13,037 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:13,038 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:13,038 INFO L146 ILogger]: Analyzing trace with hash 934091914, now seen corresponding path program 17 times [2019-05-23 11:30:13,038 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:13,038 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:13,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:13,039 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:13,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:13,053 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:13,594 INFO L146 ILogger]: Checked inductivity of 147 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:30:13,594 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:13,594 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 11:30:13,611 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:30:13,652 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-05-23 11:30:13,653 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:13,654 INFO L146 ILogger]: Trace formula consists of 291 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:13,658 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:13,823 INFO L146 ILogger]: Checked inductivity of 147 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-05-23 11:30:13,842 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:13,842 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:13,843 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:13,843 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:13,843 INFO L146 ILogger]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:13,843 INFO L146 ILogger]: Start difference. First operand 181 states and 188 transitions. Second operand 24 states. [2019-05-23 11:30:15,029 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:15,029 INFO L146 ILogger]: Finished difference Result 307 states and 320 transitions. [2019-05-23 11:30:15,030 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:30:15,030 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 180 [2019-05-23 11:30:15,030 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:15,031 INFO L146 ILogger]: With dead ends: 307 [2019-05-23 11:30:15,031 INFO L146 ILogger]: Without dead ends: 200 [2019-05-23 11:30:15,032 INFO L146 ILogger]: 0 DeclaredPredicates, 217 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=303, Invalid=1859, Unknown=0, NotChecked=0, Total=2162 [2019-05-23 11:30:15,032 INFO L146 ILogger]: Start minimizeSevpa. Operand 200 states. [2019-05-23 11:30:15,035 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 200 to 195. [2019-05-23 11:30:15,036 INFO L146 ILogger]: Start removeUnreachable. Operand 195 states. [2019-05-23 11:30:15,036 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 195 states to 195 states and 202 transitions. [2019-05-23 11:30:15,036 INFO L146 ILogger]: Start accepts. Automaton has 195 states and 202 transitions. Word has length 180 [2019-05-23 11:30:15,036 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:15,036 INFO L146 ILogger]: Abstraction has 195 states and 202 transitions. [2019-05-23 11:30:15,037 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:15,037 INFO L146 ILogger]: Start isEmpty. Operand 195 states and 202 transitions. [2019-05-23 11:30:15,037 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:30:15,038 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:15,038 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:15,038 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:15,038 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:15,039 INFO L146 ILogger]: Analyzing trace with hash -1684174717, now seen corresponding path program 18 times [2019-05-23 11:30:15,039 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:15,039 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:15,039 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,040 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:15,040 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:15,052 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,326 INFO L146 ILogger]: Checked inductivity of 177 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-05-23 11:30:15,327 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:15,327 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:15,337 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:30:15,431 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-05-23 11:30:15,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:15,433 INFO L146 ILogger]: Trace formula consists of 313 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:30:15,435 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:15,647 INFO L146 ILogger]: Checked inductivity of 177 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2019-05-23 11:30:15,667 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:15,667 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-05-23 11:30:15,668 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:30:15,668 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:30:15,668 INFO L146 ILogger]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:30:15,668 INFO L146 ILogger]: Start difference. First operand 195 states and 202 transitions. Second operand 24 states. [2019-05-23 11:30:16,386 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:30:16,386 INFO L146 ILogger]: Finished difference Result 282 states and 292 transitions. [2019-05-23 11:30:16,387 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:30:16,387 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 194 [2019-05-23 11:30:16,387 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:30:16,388 INFO L146 ILogger]: With dead ends: 282 [2019-05-23 11:30:16,389 INFO L146 ILogger]: Without dead ends: 207 [2019-05-23 11:30:16,390 INFO L146 ILogger]: 0 DeclaredPredicates, 226 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=246, Invalid=1476, Unknown=0, NotChecked=0, Total=1722 [2019-05-23 11:30:16,390 INFO L146 ILogger]: Start minimizeSevpa. Operand 207 states. [2019-05-23 11:30:16,393 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 207 to 202. [2019-05-23 11:30:16,394 INFO L146 ILogger]: Start removeUnreachable. Operand 202 states. [2019-05-23 11:30:16,394 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 202 states to 202 states and 209 transitions. [2019-05-23 11:30:16,394 INFO L146 ILogger]: Start accepts. Automaton has 202 states and 209 transitions. Word has length 194 [2019-05-23 11:30:16,394 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:30:16,394 INFO L146 ILogger]: Abstraction has 202 states and 209 transitions. [2019-05-23 11:30:16,395 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:30:16,395 INFO L146 ILogger]: Start isEmpty. Operand 202 states and 209 transitions. [2019-05-23 11:30:16,395 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 202 [2019-05-23 11:30:16,395 INFO L146 ILogger]: Found error trace [2019-05-23 11:30:16,396 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:30:16,396 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:30:16,396 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:30:16,396 INFO L146 ILogger]: Analyzing trace with hash 930686486, now seen corresponding path program 19 times [2019-05-23 11:30:16,397 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:30:16,397 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:30:16,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,397 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:30:16,397 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:30:16,431 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:21,228 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:21,229 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:30:21,229 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:30:21,241 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:30:21,299 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:30:21,307 WARN L146 ILogger]: Trace formula consists of 324 conjuncts, 186 conjunts are in the unsatisfiable core [2019-05-23 11:30:21,311 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:30:24,181 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 11:30:24,181 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:30:24,184 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:30:24,184 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 11:30:24,184 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-05-23 11:30:24,476 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:30:24,495 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:30:24,495 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 58] total 88 [2019-05-23 11:30:24,496 INFO L146 ILogger]: Interpolant automaton has 88 states [2019-05-23 11:30:24,496 INFO L146 ILogger]: Constructing interpolant automaton starting with 88 interpolants. [2019-05-23 11:30:24,498 INFO L146 ILogger]: CoverageRelationStatistics Valid=329, Invalid=7327, Unknown=0, NotChecked=0, Total=7656 [2019-05-23 11:30:24,498 INFO L146 ILogger]: Start difference. First operand 202 states and 209 transitions. Second operand 88 states.