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/reducercommutativity/max10_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:23:25,824 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:23:25,826 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:23:25,839 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:23:25,839 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:23:25,843 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:23:25,844 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:23:25,847 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:23:25,849 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:23:25,851 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:23:25,854 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:23:25,854 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:23:25,855 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:23:25,858 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:23:25,860 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:23:25,861 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:23:25,864 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:23:25,868 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:23:25,877 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:23:25,879 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:23:25,883 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:23:25,885 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:23:25,887 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:23:25,888 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:23:25,888 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:23:25,889 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:23:25,890 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:23:25,890 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:23:25,891 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:23:25,895 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:23:25,896 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:23:25,898 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:23:25,899 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:23:25,900 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:23:25,901 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:23:25,901 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:23:25,901 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:23:25,904 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:23:25,905 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:23:25,906 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:23:25,933 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:23:25,933 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:23:25,934 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:23:25,934 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:23:25,935 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:23:25,936 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:23:25,936 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:23:25,936 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:23:25,936 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:23:25,936 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:23:25,937 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:23:25,937 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:23:25,937 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:23:25,937 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:23:25,937 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:23:25,938 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:23:25,938 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:23:25,938 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:23:25,938 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:23:25,938 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:23:25,939 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:23:25,939 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:23:25,939 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:23:25,939 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:23:25,939 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:23:25,940 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:23:25,941 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:23:25,942 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:23:25,942 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 11:23:26,004 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:23:26,016 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:23:26,020 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:23:26,021 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:23:26,022 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:23:26,022 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/max10_true-unreach-call_true-termination.i [2019-05-23 11:23:26,080 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba17cb5e/031e9d0e4f634c61a85623a56620e8db/FLAG2e8472ca2 [2019-05-23 11:23:26,518 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:23:26,519 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/max10_true-unreach-call_true-termination.i [2019-05-23 11:23:26,526 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba17cb5e/031e9d0e4f634c61a85623a56620e8db/FLAG2e8472ca2 [2019-05-23 11:23:26,886 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bba17cb5e/031e9d0e4f634c61a85623a56620e8db [2019-05-23 11:23:26,894 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:23:26,896 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:23:26,897 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:26,897 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:23:26,901 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:23:26,902 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:26" (1/1) ... [2019-05-23 11:23:26,904 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b93e6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:26, skipping insertion in model container [2019-05-23 11:23:26,905 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:26" (1/1) ... [2019-05-23 11:23:26,912 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:23:26,935 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:23:27,156 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:27,170 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:23:27,207 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:27,227 INFO L146 ILogger]: Completed translation [2019-05-23 11:23:27,227 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27 WrapperNode [2019-05-23 11:23:27,228 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:27,228 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:27,229 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:23:27,229 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:23:27,239 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,250 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,290 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:27,290 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:23:27,291 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:23:27,291 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:23:27,394 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,394 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,397 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,397 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,411 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,418 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,420 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (1/1) ... [2019-05-23 11:23:27,423 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:23:27,423 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:23:27,423 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:23:27,423 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:23:27,424 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (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 11:23:27,475 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:23:27,475 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:23:27,476 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:23:27,476 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:23:27,476 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:23:27,476 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:23:28,277 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:23:28,278 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:23:28,279 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:28 BoogieIcfgContainer [2019-05-23 11:23:28,279 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:23:28,280 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:23:28,280 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:23:28,283 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:23:28,284 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:23:26" (1/3) ... [2019-05-23 11:23:28,284 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecdedbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:28, skipping insertion in model container [2019-05-23 11:23:28,285 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:27" (2/3) ... [2019-05-23 11:23:28,285 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ecdedbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:28, skipping insertion in model container [2019-05-23 11:23:28,285 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:28" (3/3) ... [2019-05-23 11:23:28,287 INFO L146 ILogger]: Analyzing ICFG max10_true-unreach-call_true-termination.i [2019-05-23 11:23:28,296 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:23:28,305 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:23:28,322 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:23:28,354 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:23:28,355 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:23:28,355 INFO L146 ILogger]: Hoare is true [2019-05-23 11:23:28,355 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:23:28,356 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:23:28,356 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:23:28,356 INFO L146 ILogger]: Difference is false [2019-05-23 11:23:28,356 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:23:28,357 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:23:28,376 INFO L146 ILogger]: Start isEmpty. Operand 123 states. [2019-05-23 11:23:28,386 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:23:28,386 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:28,387 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:28,390 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:28,394 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:28,395 INFO L146 ILogger]: Analyzing trace with hash -995057191, now seen corresponding path program 1 times [2019-05-23 11:23:28,397 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:28,398 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:28,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:28,450 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:28,450 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:28,497 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:28,586 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 11:23:28,589 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:28,590 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:23:28,594 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:23:28,608 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:23:28,609 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:23:28,611 INFO L146 ILogger]: Start difference. First operand 123 states. Second operand 3 states. [2019-05-23 11:23:28,722 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:28,722 INFO L146 ILogger]: Finished difference Result 235 states and 261 transitions. [2019-05-23 11:23:28,723 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:23:28,724 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:23:28,725 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:28,736 INFO L146 ILogger]: With dead ends: 235 [2019-05-23 11:23:28,737 INFO L146 ILogger]: Without dead ends: 123 [2019-05-23 11:23:28,741 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:23:28,758 INFO L146 ILogger]: Start minimizeSevpa. Operand 123 states. [2019-05-23 11:23:28,781 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 123 to 118. [2019-05-23 11:23:28,782 INFO L146 ILogger]: Start removeUnreachable. Operand 118 states. [2019-05-23 11:23:28,785 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2019-05-23 11:23:28,786 INFO L146 ILogger]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 68 [2019-05-23 11:23:28,787 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:28,787 INFO L146 ILogger]: Abstraction has 118 states and 125 transitions. [2019-05-23 11:23:28,787 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:23:28,788 INFO L146 ILogger]: Start isEmpty. Operand 118 states and 125 transitions. [2019-05-23 11:23:28,790 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:23:28,791 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:28,791 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:28,791 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:28,792 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:28,792 INFO L146 ILogger]: Analyzing trace with hash -654270407, now seen corresponding path program 1 times [2019-05-23 11:23:28,792 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:28,792 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:28,793 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:28,794 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:28,794 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:28,818 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:28,947 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 11:23:28,947 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:28,948 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 11:23:28,963 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:29,016 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,018 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:29,026 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:29,078 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 11:23:29,107 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:29,107 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:29,109 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:29,109 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:29,110 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:29,110 INFO L146 ILogger]: Start difference. First operand 118 states and 125 transitions. Second operand 6 states. [2019-05-23 11:23:29,490 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:29,491 INFO L146 ILogger]: Finished difference Result 266 states and 286 transitions. [2019-05-23 11:23:29,492 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:29,492 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:23:29,492 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:29,494 INFO L146 ILogger]: With dead ends: 266 [2019-05-23 11:23:29,494 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:23:29,496 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:23:29,496 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:23:29,509 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 128. [2019-05-23 11:23:29,509 INFO L146 ILogger]: Start removeUnreachable. Operand 128 states. [2019-05-23 11:23:29,511 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2019-05-23 11:23:29,511 INFO L146 ILogger]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 75 [2019-05-23 11:23:29,511 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:29,511 INFO L146 ILogger]: Abstraction has 128 states and 135 transitions. [2019-05-23 11:23:29,511 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:29,514 INFO L146 ILogger]: Start isEmpty. Operand 128 states and 135 transitions. [2019-05-23 11:23:29,521 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 116 [2019-05-23 11:23:29,521 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:29,522 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:29,522 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:29,522 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:29,522 INFO L146 ILogger]: Analyzing trace with hash -698075846, now seen corresponding path program 1 times [2019-05-23 11:23:29,522 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:29,523 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:29,524 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:29,525 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:29,525 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:29,561 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,660 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:23:29,661 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:29,661 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 11:23:29,671 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:29,723 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,724 INFO L146 ILogger]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:29,729 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:29,829 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:23:29,850 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:29,850 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:29,851 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:29,851 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:29,851 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:29,851 INFO L146 ILogger]: Start difference. First operand 128 states and 135 transitions. Second operand 6 states. [2019-05-23 11:23:30,686 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:30,686 INFO L146 ILogger]: Finished difference Result 287 states and 308 transitions. [2019-05-23 11:23:30,687 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:30,687 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 115 [2019-05-23 11:23:30,688 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:30,690 INFO L146 ILogger]: With dead ends: 287 [2019-05-23 11:23:30,690 INFO L146 ILogger]: Without dead ends: 206 [2019-05-23 11:23:30,691 INFO L146 ILogger]: 0 DeclaredPredicates, 123 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:23:30,692 INFO L146 ILogger]: Start minimizeSevpa. Operand 206 states. [2019-05-23 11:23:30,703 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 206 to 168. [2019-05-23 11:23:30,703 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:23:30,704 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2019-05-23 11:23:30,705 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 115 [2019-05-23 11:23:30,705 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:30,705 INFO L146 ILogger]: Abstraction has 168 states and 178 transitions. [2019-05-23 11:23:30,705 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:30,706 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 178 transitions. [2019-05-23 11:23:30,708 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 156 [2019-05-23 11:23:30,708 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:30,708 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:30,709 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:30,709 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:30,709 INFO L146 ILogger]: Analyzing trace with hash 780442322, now seen corresponding path program 1 times [2019-05-23 11:23:30,709 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:30,710 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:30,710 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:30,711 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:30,711 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:30,743 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:30,877 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:30,878 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:30,878 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 11:23:30,891 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:30,967 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:30,968 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:30,976 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:31,382 INFO L146 ILogger]: Checked inductivity of 49 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-05-23 11:23:31,401 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:31,401 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:23:31,402 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:23:31,402 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:23:31,402 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:23:31,402 INFO L146 ILogger]: Start difference. First operand 168 states and 178 transitions. Second operand 10 states. [2019-05-23 11:23:31,737 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:31,737 INFO L146 ILogger]: Finished difference Result 335 states and 356 transitions. [2019-05-23 11:23:31,737 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:23:31,737 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 155 [2019-05-23 11:23:31,738 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:31,741 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:23:31,741 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:23:31,743 INFO L146 ILogger]: 0 DeclaredPredicates, 165 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:31,743 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:23:31,754 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 182. [2019-05-23 11:23:31,754 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:23:31,755 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2019-05-23 11:23:31,755 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 155 [2019-05-23 11:23:31,756 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:31,756 INFO L146 ILogger]: Abstraction has 182 states and 192 transitions. [2019-05-23 11:23:31,756 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:23:31,756 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 192 transitions. [2019-05-23 11:23:31,759 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 170 [2019-05-23 11:23:31,759 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:31,759 INFO L146 ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:31,759 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:31,760 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:31,760 INFO L146 ILogger]: Analyzing trace with hash -1183164167, now seen corresponding path program 2 times [2019-05-23 11:23:31,760 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:31,760 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:31,761 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:31,761 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:31,761 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:31,800 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:32,035 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:32,036 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:32,036 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 11:23:32,044 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:32,102 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:32,102 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:32,104 INFO L146 ILogger]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:32,109 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:32,191 INFO L146 ILogger]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:32,210 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:32,210 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:23:32,211 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:23:32,211 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:23:32,211 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:23:32,211 INFO L146 ILogger]: Start difference. First operand 182 states and 192 transitions. Second operand 11 states. [2019-05-23 11:23:32,336 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:32,337 INFO L146 ILogger]: Finished difference Result 344 states and 364 transitions. [2019-05-23 11:23:32,340 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:23:32,340 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 169 [2019-05-23 11:23:32,341 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:32,342 INFO L146 ILogger]: With dead ends: 344 [2019-05-23 11:23:32,342 INFO L146 ILogger]: Without dead ends: 194 [2019-05-23 11:23:32,343 INFO L146 ILogger]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:32,343 INFO L146 ILogger]: Start minimizeSevpa. Operand 194 states. [2019-05-23 11:23:32,353 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 194 to 189. [2019-05-23 11:23:32,353 INFO L146 ILogger]: Start removeUnreachable. Operand 189 states. [2019-05-23 11:23:32,354 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 189 states to 189 states and 199 transitions. [2019-05-23 11:23:32,354 INFO L146 ILogger]: Start accepts. Automaton has 189 states and 199 transitions. Word has length 169 [2019-05-23 11:23:32,354 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:32,354 INFO L146 ILogger]: Abstraction has 189 states and 199 transitions. [2019-05-23 11:23:32,355 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:23:32,355 INFO L146 ILogger]: Start isEmpty. Operand 189 states and 199 transitions. [2019-05-23 11:23:32,357 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 177 [2019-05-23 11:23:32,358 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:32,358 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:32,358 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:32,358 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:32,359 INFO L146 ILogger]: Analyzing trace with hash -1973557393, now seen corresponding path program 3 times [2019-05-23 11:23:32,359 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:32,359 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:32,360 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:32,360 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:32,360 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:32,390 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:32,548 INFO L146 ILogger]: Checked inductivity of 94 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-05-23 11:23:32,548 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:32,548 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 11:23:32,557 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:32,603 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:23:32,604 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:32,605 INFO L146 ILogger]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:32,610 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:32,718 INFO L146 ILogger]: Checked inductivity of 94 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:32,737 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:32,737 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:23:32,738 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:23:32,738 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:23:32,738 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:32,738 INFO L146 ILogger]: Start difference. First operand 189 states and 199 transitions. Second operand 16 states. [2019-05-23 11:23:33,365 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:33,366 INFO L146 ILogger]: Finished difference Result 423 states and 452 transitions. [2019-05-23 11:23:33,367 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:23:33,367 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 176 [2019-05-23 11:23:33,368 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:33,370 INFO L146 ILogger]: With dead ends: 423 [2019-05-23 11:23:33,370 INFO L146 ILogger]: Without dead ends: 273 [2019-05-23 11:23:33,371 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:23:33,371 INFO L146 ILogger]: Start minimizeSevpa. Operand 273 states. [2019-05-23 11:23:33,381 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 273 to 235. [2019-05-23 11:23:33,381 INFO L146 ILogger]: Start removeUnreachable. Operand 235 states. [2019-05-23 11:23:33,382 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 235 states to 235 states and 248 transitions. [2019-05-23 11:23:33,382 INFO L146 ILogger]: Start accepts. Automaton has 235 states and 248 transitions. Word has length 176 [2019-05-23 11:23:33,383 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:33,383 INFO L146 ILogger]: Abstraction has 235 states and 248 transitions. [2019-05-23 11:23:33,383 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:23:33,383 INFO L146 ILogger]: Start isEmpty. Operand 235 states and 248 transitions. [2019-05-23 11:23:33,386 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 217 [2019-05-23 11:23:33,386 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:33,387 INFO L146 ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:33,387 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:33,387 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:33,387 INFO L146 ILogger]: Analyzing trace with hash -1794583568, now seen corresponding path program 4 times [2019-05-23 11:23:33,387 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:33,388 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:33,388 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:33,389 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:33,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:33,419 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:33,601 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:23:33,601 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:33,601 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 11:23:33,614 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:33,662 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:33,663 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:33,664 INFO L146 ILogger]: Trace formula consists of 306 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:33,668 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:33,760 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:23:33,781 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:33,781 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:33,781 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:33,782 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:33,782 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:33,782 INFO L146 ILogger]: Start difference. First operand 235 states and 248 transitions. Second operand 15 states. [2019-05-23 11:23:34,031 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:34,032 INFO L146 ILogger]: Finished difference Result 436 states and 462 transitions. [2019-05-23 11:23:34,032 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:34,032 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 216 [2019-05-23 11:23:34,033 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:34,034 INFO L146 ILogger]: With dead ends: 436 [2019-05-23 11:23:34,034 INFO L146 ILogger]: Without dead ends: 247 [2019-05-23 11:23:34,035 INFO L146 ILogger]: 0 DeclaredPredicates, 238 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:34,036 INFO L146 ILogger]: Start minimizeSevpa. Operand 247 states. [2019-05-23 11:23:34,043 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 247 to 242. [2019-05-23 11:23:34,043 INFO L146 ILogger]: Start removeUnreachable. Operand 242 states. [2019-05-23 11:23:34,044 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 242 states to 242 states and 255 transitions. [2019-05-23 11:23:34,044 INFO L146 ILogger]: Start accepts. Automaton has 242 states and 255 transitions. Word has length 216 [2019-05-23 11:23:34,045 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:34,045 INFO L146 ILogger]: Abstraction has 242 states and 255 transitions. [2019-05-23 11:23:34,045 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:34,045 INFO L146 ILogger]: Start isEmpty. Operand 242 states and 255 transitions. [2019-05-23 11:23:34,049 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 224 [2019-05-23 11:23:34,049 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:34,049 INFO L146 ILogger]: trace histogram [6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:34,049 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:34,050 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:34,050 INFO L146 ILogger]: Analyzing trace with hash 1458971322, now seen corresponding path program 5 times [2019-05-23 11:23:34,050 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:34,050 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:34,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:34,051 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:34,051 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:34,091 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:34,338 INFO L146 ILogger]: Checked inductivity of 228 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-05-23 11:23:34,338 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:34,338 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 11:23:34,347 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:34,459 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:23:34,459 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:34,461 INFO L146 ILogger]: Trace formula consists of 347 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:34,464 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:34,723 INFO L146 ILogger]: Checked inductivity of 228 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-05-23 11:23:34,753 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:34,754 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:23:34,754 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:34,755 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:34,755 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:34,755 INFO L146 ILogger]: Start difference. First operand 242 states and 255 transitions. Second operand 22 states. [2019-05-23 11:23:35,646 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:35,647 INFO L146 ILogger]: Finished difference Result 515 states and 550 transitions. [2019-05-23 11:23:35,647 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:35,647 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 223 [2019-05-23 11:23:35,647 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:35,650 INFO L146 ILogger]: With dead ends: 515 [2019-05-23 11:23:35,650 INFO L146 ILogger]: Without dead ends: 326 [2019-05-23 11:23:35,652 INFO L146 ILogger]: 0 DeclaredPredicates, 261 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:35,652 INFO L146 ILogger]: Start minimizeSevpa. Operand 326 states. [2019-05-23 11:23:35,658 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 326 to 288. [2019-05-23 11:23:35,658 INFO L146 ILogger]: Start removeUnreachable. Operand 288 states. [2019-05-23 11:23:35,659 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 288 states to 288 states and 304 transitions. [2019-05-23 11:23:35,659 INFO L146 ILogger]: Start accepts. Automaton has 288 states and 304 transitions. Word has length 223 [2019-05-23 11:23:35,660 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:35,660 INFO L146 ILogger]: Abstraction has 288 states and 304 transitions. [2019-05-23 11:23:35,660 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:35,660 INFO L146 ILogger]: Start isEmpty. Operand 288 states and 304 transitions. [2019-05-23 11:23:35,663 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 264 [2019-05-23 11:23:35,663 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:35,664 INFO L146 ILogger]: trace histogram [7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 11:23:35,664 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:35,664 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:35,664 INFO L146 ILogger]: Analyzing trace with hash 1190603737, now seen corresponding path program 6 times [2019-05-23 11:23:35,664 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:35,665 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:35,665 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:35,666 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:35,666 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:35,695 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:35,955 INFO L146 ILogger]: Checked inductivity of 373 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2019-05-23 11:23:35,955 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:35,956 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 11:23:35,965 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:36,066 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:23:36,066 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:36,067 INFO L146 ILogger]: Trace formula consists of 279 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:36,070 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:36,166 INFO L146 ILogger]: Checked inductivity of 373 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2019-05-23 11:23:36,186 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:36,186 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:23:36,187 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:36,187 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:36,188 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:36,188 INFO L146 ILogger]: Start difference. First operand 288 states and 304 transitions. Second operand 22 states. [2019-05-23 11:23:36,623 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:36,624 INFO L146 ILogger]: Finished difference Result 540 states and 573 transitions. [2019-05-23 11:23:36,624 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:36,624 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 263 [2019-05-23 11:23:36,624 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:36,626 INFO L146 ILogger]: With dead ends: 540 [2019-05-23 11:23:36,626 INFO L146 ILogger]: Without dead ends: 312 [2019-05-23 11:23:36,628 INFO L146 ILogger]: 0 DeclaredPredicates, 297 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:36,628 INFO L146 ILogger]: Start minimizeSevpa. Operand 312 states. [2019-05-23 11:23:36,646 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 312 to 302. [2019-05-23 11:23:36,647 INFO L146 ILogger]: Start removeUnreachable. Operand 302 states. [2019-05-23 11:23:36,648 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 302 states to 302 states and 318 transitions. [2019-05-23 11:23:36,648 INFO L146 ILogger]: Start accepts. Automaton has 302 states and 318 transitions. Word has length 263 [2019-05-23 11:23:36,648 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:36,648 INFO L146 ILogger]: Abstraction has 302 states and 318 transitions. [2019-05-23 11:23:36,648 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:36,649 INFO L146 ILogger]: Start isEmpty. Operand 302 states and 318 transitions. [2019-05-23 11:23:36,650 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 278 [2019-05-23 11:23:36,650 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:36,650 INFO L146 ILogger]: trace histogram [8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:36,651 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:36,651 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:36,651 INFO L146 ILogger]: Analyzing trace with hash -31358830, now seen corresponding path program 7 times [2019-05-23 11:23:36,651 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:36,651 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:36,652 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:36,652 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:36,653 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:36,694 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:37,179 INFO L146 ILogger]: Checked inductivity of 438 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:37,180 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:37,180 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 11:23:37,188 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:37,251 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:37,254 INFO L146 ILogger]: Trace formula consists of 425 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:37,258 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:37,373 INFO L146 ILogger]: Checked inductivity of 438 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:37,392 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:37,393 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:37,393 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:37,394 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:37,396 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:37,396 INFO L146 ILogger]: Start difference. First operand 302 states and 318 transitions. Second operand 21 states. [2019-05-23 11:23:37,916 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:37,917 INFO L146 ILogger]: Finished difference Result 549 states and 581 transitions. [2019-05-23 11:23:37,917 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:37,917 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 277 [2019-05-23 11:23:37,918 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:37,920 INFO L146 ILogger]: With dead ends: 549 [2019-05-23 11:23:37,920 INFO L146 ILogger]: Without dead ends: 314 [2019-05-23 11:23:37,921 INFO L146 ILogger]: 0 DeclaredPredicates, 311 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:37,922 INFO L146 ILogger]: Start minimizeSevpa. Operand 314 states. [2019-05-23 11:23:37,928 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 314 to 309. [2019-05-23 11:23:37,929 INFO L146 ILogger]: Start removeUnreachable. Operand 309 states. [2019-05-23 11:23:37,930 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 309 states to 309 states and 325 transitions. [2019-05-23 11:23:37,931 INFO L146 ILogger]: Start accepts. Automaton has 309 states and 325 transitions. Word has length 277 [2019-05-23 11:23:37,931 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:37,932 INFO L146 ILogger]: Abstraction has 309 states and 325 transitions. [2019-05-23 11:23:37,932 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:37,932 INFO L146 ILogger]: Start isEmpty. Operand 309 states and 325 transitions. [2019-05-23 11:23:37,934 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 285 [2019-05-23 11:23:37,934 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:37,934 INFO L146 ILogger]: trace histogram [9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:37,934 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:37,935 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:37,935 INFO L146 ILogger]: Analyzing trace with hash 849020424, now seen corresponding path program 8 times [2019-05-23 11:23:37,935 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:37,935 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:37,936 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:37,936 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:37,937 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:37,967 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:38,934 INFO L146 ILogger]: Checked inductivity of 495 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:38,934 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:38,934 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 11:23:38,945 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:39,019 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:39,019 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:39,021 INFO L146 ILogger]: Trace formula consists of 435 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:39,024 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:39,185 INFO L146 ILogger]: Checked inductivity of 495 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2019-05-23 11:23:39,203 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:39,204 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:39,204 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:39,205 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:39,205 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:39,205 INFO L146 ILogger]: Start difference. First operand 309 states and 325 transitions. Second operand 23 states. [2019-05-23 11:23:39,540 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:39,540 INFO L146 ILogger]: Finished difference Result 551 states and 583 transitions. [2019-05-23 11:23:39,548 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:39,548 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 284 [2019-05-23 11:23:39,548 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:39,549 INFO L146 ILogger]: With dead ends: 551 [2019-05-23 11:23:39,549 INFO L146 ILogger]: Without dead ends: 316 [2019-05-23 11:23:39,550 INFO L146 ILogger]: 0 DeclaredPredicates, 322 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:39,551 INFO L146 ILogger]: Start minimizeSevpa. Operand 316 states. [2019-05-23 11:23:39,556 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 316 to 316. [2019-05-23 11:23:39,556 INFO L146 ILogger]: Start removeUnreachable. Operand 316 states. [2019-05-23 11:23:39,557 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 316 states to 316 states and 332 transitions. [2019-05-23 11:23:39,558 INFO L146 ILogger]: Start accepts. Automaton has 316 states and 332 transitions. Word has length 284 [2019-05-23 11:23:39,558 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:39,558 INFO L146 ILogger]: Abstraction has 316 states and 332 transitions. [2019-05-23 11:23:39,558 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:39,558 INFO L146 ILogger]: Start isEmpty. Operand 316 states and 332 transitions. [2019-05-23 11:23:39,560 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 292 [2019-05-23 11:23:39,560 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:39,560 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:39,560 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:39,561 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:39,561 INFO L146 ILogger]: Analyzing trace with hash -1843621934, now seen corresponding path program 9 times [2019-05-23 11:23:39,561 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:39,561 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:39,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:39,562 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:39,562 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:39,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:39,787 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2019-05-23 11:23:39,787 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:39,787 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 11:23:39,795 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:39,869 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:23:39,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:39,871 INFO L146 ILogger]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:39,874 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:40,179 INFO L146 ILogger]: Checked inductivity of 559 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-05-23 11:23:40,197 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:40,198 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2019-05-23 11:23:40,198 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:23:40,199 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:23:40,199 INFO L146 ILogger]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:23:40,199 INFO L146 ILogger]: Start difference. First operand 316 states and 332 transitions. Second operand 18 states. [2019-05-23 11:23:40,813 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:40,813 INFO L146 ILogger]: Finished difference Result 574 states and 610 transitions. [2019-05-23 11:23:40,813 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:23:40,813 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 291 [2019-05-23 11:23:40,814 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:40,817 INFO L146 ILogger]: With dead ends: 574 [2019-05-23 11:23:40,817 INFO L146 ILogger]: Without dead ends: 400 [2019-05-23 11:23:40,818 INFO L146 ILogger]: 0 DeclaredPredicates, 323 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:23:40,819 INFO L146 ILogger]: Start minimizeSevpa. Operand 400 states. [2019-05-23 11:23:40,824 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 400 to 362. [2019-05-23 11:23:40,824 INFO L146 ILogger]: Start removeUnreachable. Operand 362 states. [2019-05-23 11:23:40,826 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 362 states to 362 states and 381 transitions. [2019-05-23 11:23:40,826 INFO L146 ILogger]: Start accepts. Automaton has 362 states and 381 transitions. Word has length 291 [2019-05-23 11:23:40,826 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:40,826 INFO L146 ILogger]: Abstraction has 362 states and 381 transitions. [2019-05-23 11:23:40,826 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:23:40,826 INFO L146 ILogger]: Start isEmpty. Operand 362 states and 381 transitions. [2019-05-23 11:23:40,828 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 332 [2019-05-23 11:23:40,828 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:40,829 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:40,829 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:40,829 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:40,829 INFO L146 ILogger]: Analyzing trace with hash -1942335430, now seen corresponding path program 10 times [2019-05-23 11:23:40,829 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:40,830 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:40,830 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:40,830 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:40,831 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:40,858 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:41,533 INFO L146 ILogger]: Checked inductivity of 716 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2019-05-23 11:23:41,533 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:41,533 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 11:23:41,543 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:41,613 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:41,613 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:41,615 INFO L146 ILogger]: Trace formula consists of 462 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:41,619 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:41,728 INFO L146 ILogger]: Checked inductivity of 716 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2019-05-23 11:23:41,745 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:41,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:41,746 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:41,746 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:41,747 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:41,747 INFO L146 ILogger]: Start difference. First operand 362 states and 381 transitions. Second operand 15 states. [2019-05-23 11:23:42,283 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:42,283 INFO L146 ILogger]: Finished difference Result 641 states and 681 transitions. [2019-05-23 11:23:42,284 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:42,284 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 331 [2019-05-23 11:23:42,284 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:42,287 INFO L146 ILogger]: With dead ends: 641 [2019-05-23 11:23:42,287 INFO L146 ILogger]: Without dead ends: 434 [2019-05-23 11:23:42,289 INFO L146 ILogger]: 0 DeclaredPredicates, 353 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:42,289 INFO L146 ILogger]: Start minimizeSevpa. Operand 434 states. [2019-05-23 11:23:42,295 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 434 to 401. [2019-05-23 11:23:42,295 INFO L146 ILogger]: Start removeUnreachable. Operand 401 states. [2019-05-23 11:23:42,296 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 401 states to 401 states and 423 transitions. [2019-05-23 11:23:42,297 INFO L146 ILogger]: Start accepts. Automaton has 401 states and 423 transitions. Word has length 331 [2019-05-23 11:23:42,297 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:42,297 INFO L146 ILogger]: Abstraction has 401 states and 423 transitions. [2019-05-23 11:23:42,297 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:42,297 INFO L146 ILogger]: Start isEmpty. Operand 401 states and 423 transitions. [2019-05-23 11:23:42,299 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 365 [2019-05-23 11:23:42,300 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:42,300 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:42,300 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:42,300 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:42,301 INFO L146 ILogger]: Analyzing trace with hash 1608171023, now seen corresponding path program 11 times [2019-05-23 11:23:42,301 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:42,301 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:42,302 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,302 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:42,302 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:42,332 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:43,438 INFO L146 ILogger]: Checked inductivity of 884 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2019-05-23 11:23:43,438 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:43,438 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:23:43,447 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:43,821 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:23:43,822 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:43,824 INFO L146 ILogger]: Trace formula consists of 551 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:23:43,828 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:44,028 INFO L146 ILogger]: Checked inductivity of 884 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2019-05-23 11:23:44,046 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:44,046 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2019-05-23 11:23:44,047 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:23:44,047 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:23:44,047 INFO L146 ILogger]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:23:44,048 INFO L146 ILogger]: Start difference. First operand 401 states and 423 transitions. Second operand 24 states. [2019-05-23 11:23:44,822 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:44,822 INFO L146 ILogger]: Finished difference Result 718 states and 764 transitions. [2019-05-23 11:23:44,822 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:23:44,822 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 364 [2019-05-23 11:23:44,823 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:44,826 INFO L146 ILogger]: With dead ends: 718 [2019-05-23 11:23:44,826 INFO L146 ILogger]: Without dead ends: 485 [2019-05-23 11:23:44,827 INFO L146 ILogger]: 0 DeclaredPredicates, 410 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=365, Invalid=1527, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:23:44,828 INFO L146 ILogger]: Start minimizeSevpa. Operand 485 states. [2019-05-23 11:23:44,834 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 485 to 447. [2019-05-23 11:23:44,835 INFO L146 ILogger]: Start removeUnreachable. Operand 447 states. [2019-05-23 11:23:44,835 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 447 states to 447 states and 472 transitions. [2019-05-23 11:23:44,836 INFO L146 ILogger]: Start accepts. Automaton has 447 states and 472 transitions. Word has length 364 [2019-05-23 11:23:44,836 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:44,836 INFO L146 ILogger]: Abstraction has 447 states and 472 transitions. [2019-05-23 11:23:44,836 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:23:44,836 INFO L146 ILogger]: Start isEmpty. Operand 447 states and 472 transitions. [2019-05-23 11:23:44,838 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 405 [2019-05-23 11:23:44,839 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:44,839 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:44,839 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:44,839 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:44,840 INFO L146 ILogger]: Analyzing trace with hash -885113813, now seen corresponding path program 12 times [2019-05-23 11:23:44,840 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:44,840 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:44,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:44,841 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:44,841 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:44,870 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:45,295 INFO L146 ILogger]: Checked inductivity of 1114 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2019-05-23 11:23:45,295 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:45,295 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 11:23:45,303 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:45,724 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:23:45,725 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:45,728 INFO L146 ILogger]: Trace formula consists of 609 conjuncts, 24 conjunts are in the unsatisfiable core [2019-05-23 11:23:45,734 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:47,037 INFO L146 ILogger]: Checked inductivity of 1114 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2019-05-23 11:23:47,056 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:47,057 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2019-05-23 11:23:47,057 INFO L146 ILogger]: Interpolant automaton has 28 states [2019-05-23 11:23:47,058 INFO L146 ILogger]: Constructing interpolant automaton starting with 28 interpolants. [2019-05-23 11:23:47,058 INFO L146 ILogger]: CoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:23:47,058 INFO L146 ILogger]: Start difference. First operand 447 states and 472 transitions. Second operand 28 states. [2019-05-23 11:23:47,898 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:47,898 INFO L146 ILogger]: Finished difference Result 797 states and 848 transitions. [2019-05-23 11:23:47,898 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-05-23 11:23:47,899 INFO L146 ILogger]: Start accepts. Automaton has 28 states. Word has length 404 [2019-05-23 11:23:47,899 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:47,901 INFO L146 ILogger]: With dead ends: 797 [2019-05-23 11:23:47,901 INFO L146 ILogger]: Without dead ends: 531 [2019-05-23 11:23:47,903 INFO L146 ILogger]: 0 DeclaredPredicates, 458 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=495, Invalid=2157, Unknown=0, NotChecked=0, Total=2652 [2019-05-23 11:23:47,904 INFO L146 ILogger]: Start minimizeSevpa. Operand 531 states. [2019-05-23 11:23:47,909 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 531 to 493. [2019-05-23 11:23:47,910 INFO L146 ILogger]: Start removeUnreachable. Operand 493 states. [2019-05-23 11:23:47,911 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 493 states to 493 states and 521 transitions. [2019-05-23 11:23:47,911 INFO L146 ILogger]: Start accepts. Automaton has 493 states and 521 transitions. Word has length 404 [2019-05-23 11:23:47,911 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:47,911 INFO L146 ILogger]: Abstraction has 493 states and 521 transitions. [2019-05-23 11:23:47,911 INFO L146 ILogger]: Interpolant automaton has 28 states. [2019-05-23 11:23:47,912 INFO L146 ILogger]: Start isEmpty. Operand 493 states and 521 transitions. [2019-05-23 11:23:47,914 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 445 [2019-05-23 11:23:47,914 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:47,915 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:47,915 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:47,915 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:47,915 INFO L146 ILogger]: Analyzing trace with hash -117544049, now seen corresponding path program 13 times [2019-05-23 11:23:47,915 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:47,916 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:47,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,916 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:47,916 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:47,944 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:48,735 INFO L146 ILogger]: Checked inductivity of 1384 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2019-05-23 11:23:48,735 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:48,735 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 11:23:48,744 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:48,842 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:48,844 INFO L146 ILogger]: Trace formula consists of 667 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:48,849 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:49,031 INFO L146 ILogger]: Checked inductivity of 1384 backedges. 0 proven. 316 refuted. 0 times theorem prover too weak. 1068 trivial. 0 not checked. [2019-05-23 11:23:49,049 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:49,050 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:49,050 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:49,051 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:49,051 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:49,051 INFO L146 ILogger]: Start difference. First operand 493 states and 521 transitions. Second operand 21 states. [2019-05-23 11:23:49,843 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:49,843 INFO L146 ILogger]: Finished difference Result 864 states and 919 transitions. [2019-05-23 11:23:49,843 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:49,843 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 444 [2019-05-23 11:23:49,844 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:49,847 INFO L146 ILogger]: With dead ends: 864 [2019-05-23 11:23:49,847 INFO L146 ILogger]: Without dead ends: 565 [2019-05-23 11:23:49,848 INFO L146 ILogger]: 0 DeclaredPredicates, 478 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:49,849 INFO L146 ILogger]: Start minimizeSevpa. Operand 565 states. [2019-05-23 11:23:49,855 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 565 to 532. [2019-05-23 11:23:49,856 INFO L146 ILogger]: Start removeUnreachable. Operand 532 states. [2019-05-23 11:23:49,857 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 532 states to 532 states and 563 transitions. [2019-05-23 11:23:49,857 INFO L146 ILogger]: Start accepts. Automaton has 532 states and 563 transitions. Word has length 444 [2019-05-23 11:23:49,857 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:49,857 INFO L146 ILogger]: Abstraction has 532 states and 563 transitions. [2019-05-23 11:23:49,857 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:49,858 INFO L146 ILogger]: Start isEmpty. Operand 532 states and 563 transitions. [2019-05-23 11:23:49,860 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 478 [2019-05-23 11:23:49,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:49,861 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:49,861 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:49,861 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:49,862 INFO L146 ILogger]: Analyzing trace with hash -1029088422, now seen corresponding path program 14 times [2019-05-23 11:23:49,862 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:49,862 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:49,863 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:49,863 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:49,863 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:49,892 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:51,263 INFO L146 ILogger]: Checked inductivity of 1651 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2019-05-23 11:23:51,264 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:51,264 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 11:23:51,273 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:51,372 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:51,373 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:51,374 INFO L146 ILogger]: Trace formula consists of 715 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:51,379 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:51,522 INFO L146 ILogger]: Checked inductivity of 1651 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2019-05-23 11:23:51,540 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:51,541 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:51,541 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:51,541 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:51,542 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:51,542 INFO L146 ILogger]: Start difference. First operand 532 states and 563 transitions. Second operand 23 states. [2019-05-23 11:23:52,263 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:52,263 INFO L146 ILogger]: Finished difference Result 896 states and 953 transitions. [2019-05-23 11:23:52,263 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:52,264 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 477 [2019-05-23 11:23:52,264 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:52,267 INFO L146 ILogger]: With dead ends: 896 [2019-05-23 11:23:52,267 INFO L146 ILogger]: Without dead ends: 571 [2019-05-23 11:23:52,268 INFO L146 ILogger]: 0 DeclaredPredicates, 515 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:52,269 INFO L146 ILogger]: Start minimizeSevpa. Operand 571 states. [2019-05-23 11:23:52,276 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-05-23 11:23:52,276 INFO L146 ILogger]: Start removeUnreachable. Operand 571 states. [2019-05-23 11:23:52,277 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 571 states to 571 states and 605 transitions. [2019-05-23 11:23:52,277 INFO L146 ILogger]: Start accepts. Automaton has 571 states and 605 transitions. Word has length 477 [2019-05-23 11:23:52,278 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:52,278 INFO L146 ILogger]: Abstraction has 571 states and 605 transitions. [2019-05-23 11:23:52,278 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:52,278 INFO L146 ILogger]: Start isEmpty. Operand 571 states and 605 transitions. [2019-05-23 11:23:52,281 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 511 [2019-05-23 11:23:52,281 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:52,282 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:52,282 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:52,282 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:52,283 INFO L146 ILogger]: Analyzing trace with hash -589893009, now seen corresponding path program 15 times [2019-05-23 11:23:52,283 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:52,283 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:52,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,284 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:52,284 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:52,319 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:52,644 INFO L146 ILogger]: Checked inductivity of 1951 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2019-05-23 11:23:52,645 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:52,645 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 11:23:52,654 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:52,855 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:23:52,855 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:52,857 INFO L146 ILogger]: Trace formula consists of 531 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:23:52,862 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:53,280 INFO L146 ILogger]: Checked inductivity of 1951 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2019-05-23 11:23:53,299 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:53,300 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:23:53,300 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:23:53,301 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:23:53,301 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:53,301 INFO L146 ILogger]: Start difference. First operand 571 states and 605 transitions. Second operand 17 states. [2019-05-23 11:23:53,497 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:53,497 INFO L146 ILogger]: Finished difference Result 731 states and 776 transitions. [2019-05-23 11:23:53,497 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:23:53,498 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 510 [2019-05-23 11:23:53,499 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:53,501 INFO L146 ILogger]: With dead ends: 731 [2019-05-23 11:23:53,502 INFO L146 ILogger]: Without dead ends: 583 [2019-05-23 11:23:53,503 INFO L146 ILogger]: 0 DeclaredPredicates, 536 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:23:53,503 INFO L146 ILogger]: Start minimizeSevpa. Operand 583 states. [2019-05-23 11:23:53,510 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 583 to 578. [2019-05-23 11:23:53,510 INFO L146 ILogger]: Start removeUnreachable. Operand 578 states. [2019-05-23 11:23:53,511 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 578 states to 578 states and 612 transitions. [2019-05-23 11:23:53,511 INFO L146 ILogger]: Start accepts. Automaton has 578 states and 612 transitions. Word has length 510 [2019-05-23 11:23:53,512 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:53,512 INFO L146 ILogger]: Abstraction has 578 states and 612 transitions. [2019-05-23 11:23:53,512 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:23:53,512 INFO L146 ILogger]: Start isEmpty. Operand 578 states and 612 transitions. [2019-05-23 11:23:53,516 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 518 [2019-05-23 11:23:53,516 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:53,516 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:53,516 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:53,517 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:53,517 INFO L146 ILogger]: Analyzing trace with hash 579637874, now seen corresponding path program 16 times [2019-05-23 11:23:53,517 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:53,517 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:53,518 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:53,518 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:53,518 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:53,553 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:53,908 INFO L146 ILogger]: Checked inductivity of 1994 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2019-05-23 11:23:53,909 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:53,909 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 11:23:53,918 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:54,023 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:54,024 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:54,025 INFO L146 ILogger]: Trace formula consists of 732 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:23:54,030 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:54,296 INFO L146 ILogger]: Checked inductivity of 1994 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2019-05-23 11:23:54,315 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:54,315 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:23:54,316 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:23:54,316 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:23:54,317 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:23:54,317 INFO L146 ILogger]: Start difference. First operand 578 states and 612 transitions. Second operand 19 states. [2019-05-23 11:23:54,575 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:54,576 INFO L146 ILogger]: Finished difference Result 738 states and 783 transitions. [2019-05-23 11:23:54,576 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:23:54,576 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 517 [2019-05-23 11:23:54,577 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:54,579 INFO L146 ILogger]: With dead ends: 738 [2019-05-23 11:23:54,579 INFO L146 ILogger]: Without dead ends: 590 [2019-05-23 11:23:54,580 INFO L146 ILogger]: 0 DeclaredPredicates, 547 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:23:54,580 INFO L146 ILogger]: Start minimizeSevpa. Operand 590 states. [2019-05-23 11:23:54,587 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 590 to 585. [2019-05-23 11:23:54,587 INFO L146 ILogger]: Start removeUnreachable. Operand 585 states. [2019-05-23 11:23:54,588 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 585 states to 585 states and 619 transitions. [2019-05-23 11:23:54,588 INFO L146 ILogger]: Start accepts. Automaton has 585 states and 619 transitions. Word has length 517 [2019-05-23 11:23:54,589 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:54,589 INFO L146 ILogger]: Abstraction has 585 states and 619 transitions. [2019-05-23 11:23:54,589 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:23:54,589 INFO L146 ILogger]: Start isEmpty. Operand 585 states and 619 transitions. [2019-05-23 11:23:54,592 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 525 [2019-05-23 11:23:54,592 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:54,593 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:54,593 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:54,593 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:54,594 INFO L146 ILogger]: Analyzing trace with hash -353994481, now seen corresponding path program 17 times [2019-05-23 11:23:54,594 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:54,594 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:54,594 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,595 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:54,595 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:54,631 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:55,834 INFO L146 ILogger]: Checked inductivity of 2044 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2019-05-23 11:23:55,834 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:55,834 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:23:55,843 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:56,484 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:23:56,484 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:56,497 INFO L146 ILogger]: Trace formula consists of 783 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:56,503 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:57,038 INFO L146 ILogger]: Checked inductivity of 2044 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1840 trivial. 0 not checked. [2019-05-23 11:23:57,058 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:57,058 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:57,059 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:57,059 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:57,059 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:57,059 INFO L146 ILogger]: Start difference. First operand 585 states and 619 transitions. Second operand 21 states. [2019-05-23 11:23:57,762 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:57,762 INFO L146 ILogger]: Finished difference Result 740 states and 785 transitions. [2019-05-23 11:23:57,763 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:57,763 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 524 [2019-05-23 11:23:57,764 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:57,769 INFO L146 ILogger]: With dead ends: 740 [2019-05-23 11:23:57,769 INFO L146 ILogger]: Without dead ends: 592 [2019-05-23 11:23:57,770 INFO L146 ILogger]: 0 DeclaredPredicates, 558 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:57,771 INFO L146 ILogger]: Start minimizeSevpa. Operand 592 states. [2019-05-23 11:23:57,777 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-05-23 11:23:57,778 INFO L146 ILogger]: Start removeUnreachable. Operand 592 states. [2019-05-23 11:23:57,779 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 592 states to 592 states and 626 transitions. [2019-05-23 11:23:57,779 INFO L146 ILogger]: Start accepts. Automaton has 592 states and 626 transitions. Word has length 524 [2019-05-23 11:23:57,780 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:57,780 INFO L146 ILogger]: Abstraction has 592 states and 626 transitions. [2019-05-23 11:23:57,780 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:57,780 INFO L146 ILogger]: Start isEmpty. Operand 592 states and 626 transitions. [2019-05-23 11:23:57,783 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 532 [2019-05-23 11:23:57,784 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:57,784 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:57,784 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:57,785 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:57,785 INFO L146 ILogger]: Analyzing trace with hash -1076471854, now seen corresponding path program 18 times [2019-05-23 11:23:57,785 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:57,785 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:57,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:57,786 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:57,786 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:58,148 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:58,908 WARN L146 ILogger]: Spent 124.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 3 [2019-05-23 11:24:00,638 INFO L146 ILogger]: Checked inductivity of 2101 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2019-05-23 11:24:00,639 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:00,639 INFO L146 ILogger]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-05-23 11:24:00,639 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:24:00,640 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:24:00,640 INFO L146 ILogger]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:00,640 INFO L146 ILogger]: Start difference. First operand 592 states and 626 transitions. Second operand 17 states. [2019-05-23 11:24:01,507 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:01,508 INFO L146 ILogger]: Finished difference Result 2090 states and 2215 transitions. [2019-05-23 11:24:01,508 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-05-23 11:24:01,508 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 531 [2019-05-23 11:24:01,510 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:01,519 INFO L146 ILogger]: With dead ends: 2090 [2019-05-23 11:24:01,520 INFO L146 ILogger]: Without dead ends: 2082 [2019-05-23 11:24:01,521 INFO L146 ILogger]: 0 DeclaredPredicates, 87 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2019-05-23 11:24:01,522 INFO L146 ILogger]: Start minimizeSevpa. Operand 2082 states. [2019-05-23 11:24:01,543 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 2082 to 1014. [2019-05-23 11:24:01,543 INFO L146 ILogger]: Start removeUnreachable. Operand 1014 states. [2019-05-23 11:24:01,545 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1080 transitions. [2019-05-23 11:24:01,545 INFO L146 ILogger]: Start accepts. Automaton has 1014 states and 1080 transitions. Word has length 531 [2019-05-23 11:24:01,546 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:01,546 INFO L146 ILogger]: Abstraction has 1014 states and 1080 transitions. [2019-05-23 11:24:01,546 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:24:01,547 INFO L146 ILogger]: Start isEmpty. Operand 1014 states and 1080 transitions. [2019-05-23 11:24:01,551 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 533 [2019-05-23 11:24:01,551 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:01,551 INFO L146 ILogger]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:01,551 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:01,552 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:01,552 INFO L146 ILogger]: Analyzing trace with hash 1831807716, now seen corresponding path program 1 times [2019-05-23 11:24:01,552 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:01,552 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:01,553 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:01,553 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:01,553 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:01,674 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:02,720 WARN L146 ILogger]: Spent 288.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 6 [2019-05-23 11:24:05,437 INFO L146 ILogger]: Checked inductivity of 2092 backedges. 424 proven. 342 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2019-05-23 11:24:05,437 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:05,437 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 11:24:05,446 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:05,566 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:05,570 INFO L146 ILogger]: Trace formula consists of 795 conjuncts, 115 conjunts are in the unsatisfiable core [2019-05-23 11:24:05,581 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:06,668 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:24:06,669 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:06,677 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:06,678 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 11:24:06,678 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2019-05-23 11:24:07,781 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 15 treesize of output 7 [2019-05-23 11:24:07,782 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:07,828 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:07,828 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:07,829 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2019-05-23 11:24:07,849 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-05-23 11:24:07,849 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:07,858 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:07,858 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 11:24:07,858 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2019-05-23 11:24:08,297 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:08,298 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:08,299 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:24:08,301 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:08,302 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 42 [2019-05-23 11:24:08,303 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:08,326 INFO L146 ILogger]: treesize reduction 18, result has 70.0 percent of original size [2019-05-23 11:24:08,327 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 11:24:08,327 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:39 [2019-05-23 11:24:08,509 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:24:08,510 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:08,511 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:08,512 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 34 [2019-05-23 11:24:08,512 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:08,528 INFO L146 ILogger]: treesize reduction 11, result has 67.6 percent of original size [2019-05-23 11:24:08,528 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 11:24:08,529 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:14 [2019-05-23 11:24:08,713 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:08,714 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:24:08,714 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:08,724 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:08,725 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 11:24:08,725 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:24:08,830 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:08,831 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:24:08,832 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:08,840 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:08,840 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 11:24:08,840 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:24:08,947 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:08,948 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:24:08,949 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:08,957 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:08,958 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 11:24:08,958 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:24:09,085 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:09,086 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:24:09,087 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:09,095 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:09,096 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 11:24:09,096 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:24:09,228 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:09,229 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:24:09,230 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:09,237 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:09,238 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 11:24:09,238 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:24:09,395 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:09,396 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-05-23 11:24:09,396 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:09,452 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:09,453 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 11:24:09,453 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-05-23 11:24:09,588 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:09,589 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-05-23 11:24:09,589 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:09,594 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:09,595 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 11:24:09,595 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:11 [2019-05-23 11:24:09,605 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:09,606 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-05-23 11:24:09,607 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:09,614 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:09,614 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 11:24:09,615 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:11 [2019-05-23 11:24:09,834 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 15 treesize of output 7 [2019-05-23 11:24:09,834 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:09,851 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:09,851 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 11:24:09,852 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-05-23 11:24:10,392 INFO L146 ILogger]: Checked inductivity of 2092 backedges. 28 proven. 614 refuted. 0 times theorem prover too weak. 1450 trivial. 0 not checked. [2019-05-23 11:24:10,413 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:10,413 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 56] total 87 [2019-05-23 11:24:10,414 INFO L146 ILogger]: Interpolant automaton has 87 states [2019-05-23 11:24:10,414 INFO L146 ILogger]: Constructing interpolant automaton starting with 87 interpolants. [2019-05-23 11:24:10,416 INFO L146 ILogger]: CoverageRelationStatistics Valid=418, Invalid=7064, Unknown=0, NotChecked=0, Total=7482 [2019-05-23 11:24:10,416 INFO L146 ILogger]: Start difference. First operand 1014 states and 1080 transitions. Second operand 87 states. [2019-05-23 11:24:14,118 WARN L146 ILogger]: Spent 262.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30