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/sep_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:24:05,959 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:24:05,963 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:24:05,978 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:24:05,978 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:24:05,980 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:24:05,982 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:24:05,985 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:24:05,988 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:24:05,989 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:24:05,991 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:24:05,991 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:24:05,992 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:24:05,993 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:24:05,994 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:24:06,000 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:24:06,001 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:24:06,008 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:24:06,010 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:24:06,014 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:24:06,015 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:24:06,018 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:24:06,023 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:24:06,023 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:24:06,023 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:24:06,024 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:24:06,024 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:24:06,026 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:24:06,027 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:24:06,027 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:24:06,028 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:24:06,030 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:24:06,031 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:24:06,031 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:24:06,033 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:24:06,033 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:24:06,033 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:24:06,035 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:24:06,036 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:24:06,037 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:24:06,051 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:24:06,051 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:24:06,053 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:24:06,053 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:24:06,053 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:24:06,053 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:24:06,053 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:24:06,054 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:24:06,054 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:24:06,054 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:24:06,054 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:24:06,055 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:24:06,055 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:24:06,055 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:24:06,055 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:24:06,055 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:24:06,056 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:24:06,056 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:24:06,056 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:24:06,056 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:24:06,056 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:24:06,057 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:24:06,057 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:24:06,057 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:24:06,057 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:24:06,057 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:24:06,058 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:24:06,058 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:24:06,058 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 11:24:06,110 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:24:06,125 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:24:06,129 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:24:06,131 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:24:06,131 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:24:06,132 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/sep_true-unreach-call_true-termination.i [2019-05-23 11:24:06,197 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d98e0fe9/79794868bf674c3298565acafb462c9f/FLAGe1e253aea [2019-05-23 11:24:06,625 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:24:06,626 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/sep_true-unreach-call_true-termination.i [2019-05-23 11:24:06,634 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d98e0fe9/79794868bf674c3298565acafb462c9f/FLAGe1e253aea [2019-05-23 11:24:06,979 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d98e0fe9/79794868bf674c3298565acafb462c9f [2019-05-23 11:24:06,987 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:24:06,990 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:24:06,991 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:06,991 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:24:06,994 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:24:06,995 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:06" (1/1) ... [2019-05-23 11:24:06,998 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535fdb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:06, skipping insertion in model container [2019-05-23 11:24:06,999 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:24:06" (1/1) ... [2019-05-23 11:24:07,006 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:24:07,030 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:24:07,299 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:07,315 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:24:07,354 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:24:07,381 INFO L146 ILogger]: Completed translation [2019-05-23 11:24:07,382 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07 WrapperNode [2019-05-23 11:24:07,382 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:24:07,384 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:07,384 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:24:07,384 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:24:07,394 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,403 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,439 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:24:07,440 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:24:07,440 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:24:07,440 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:24:07,448 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,448 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,451 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,451 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,458 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,557 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,559 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (1/1) ... [2019-05-23 11:24:07,569 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:24:07,572 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:24:07,572 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:24:07,573 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:24:07,573 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (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 11:24:07,627 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:24:07,627 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:24:07,627 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:24:07,628 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:24:07,628 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:24:07,628 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:08,447 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:08,448 INFO L146 ILogger]: Removed 14 assume(true) statements. [2019-05-23 11:24:08,450 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:08 BoogieIcfgContainer [2019-05-23 11:24:08,450 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:08,452 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:08,452 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:08,458 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:08,459 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:24:06" (1/3) ... [2019-05-23 11:24:08,460 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e96a849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:08, skipping insertion in model container [2019-05-23 11:24:08,460 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:24:07" (2/3) ... [2019-05-23 11:24:08,460 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e96a849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:08, skipping insertion in model container [2019-05-23 11:24:08,461 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:08" (3/3) ... [2019-05-23 11:24:08,463 INFO L146 ILogger]: Analyzing ICFG sep_true-unreach-call_true-termination.i [2019-05-23 11:24:08,472 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:08,479 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:08,495 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:08,525 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:08,526 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:08,526 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:08,526 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:08,526 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:08,527 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:08,527 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:08,527 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:08,527 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:08,545 INFO L146 ILogger]: Start isEmpty. Operand 117 states. [2019-05-23 11:24:08,554 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:24:08,555 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:08,556 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] [2019-05-23 11:24:08,558 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:08,563 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:08,564 INFO L146 ILogger]: Analyzing trace with hash -1321323701, now seen corresponding path program 1 times [2019-05-23 11:24:08,566 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:08,566 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:08,613 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,613 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:08,613 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,661 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,717 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 11:24:08,719 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:08,720 INFO L146 ILogger]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-05-23 11:24:08,724 INFO L146 ILogger]: Interpolant automaton has 2 states [2019-05-23 11:24:08,738 INFO L146 ILogger]: Constructing interpolant automaton starting with 2 interpolants. [2019-05-23 11:24:08,739 INFO L146 ILogger]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:24:08,741 INFO L146 ILogger]: Start difference. First operand 117 states. Second operand 2 states. [2019-05-23 11:24:08,767 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:08,767 INFO L146 ILogger]: Finished difference Result 200 states and 220 transitions. [2019-05-23 11:24:08,767 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-05-23 11:24:08,769 INFO L146 ILogger]: Start accepts. Automaton has 2 states. Word has length 65 [2019-05-23 11:24:08,769 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:08,781 INFO L146 ILogger]: With dead ends: 200 [2019-05-23 11:24:08,781 INFO L146 ILogger]: Without dead ends: 111 [2019-05-23 11:24:08,785 INFO L146 ILogger]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-05-23 11:24:08,799 INFO L146 ILogger]: Start minimizeSevpa. Operand 111 states. [2019-05-23 11:24:08,819 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-05-23 11:24:08,821 INFO L146 ILogger]: Start removeUnreachable. Operand 111 states. [2019-05-23 11:24:08,823 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 111 states to 111 states and 117 transitions. [2019-05-23 11:24:08,825 INFO L146 ILogger]: Start accepts. Automaton has 111 states and 117 transitions. Word has length 65 [2019-05-23 11:24:08,825 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:08,825 INFO L146 ILogger]: Abstraction has 111 states and 117 transitions. [2019-05-23 11:24:08,825 INFO L146 ILogger]: Interpolant automaton has 2 states. [2019-05-23 11:24:08,826 INFO L146 ILogger]: Start isEmpty. Operand 111 states and 117 transitions. [2019-05-23 11:24:08,828 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 66 [2019-05-23 11:24:08,829 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:08,829 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] [2019-05-23 11:24:08,829 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:08,830 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:08,830 INFO L146 ILogger]: Analyzing trace with hash 1365671009, now seen corresponding path program 1 times [2019-05-23 11:24:08,830 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:08,830 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:08,831 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,832 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:08,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,885 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,995 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 11:24:08,996 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:08,996 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:24:08,998 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:24:08,998 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:24:08,999 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:24:08,999 INFO L146 ILogger]: Start difference. First operand 111 states and 117 transitions. Second operand 4 states. [2019-05-23 11:24:09,267 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:09,268 INFO L146 ILogger]: Finished difference Result 227 states and 243 transitions. [2019-05-23 11:24:09,268 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:24:09,268 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 65 [2019-05-23 11:24:09,268 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:09,271 INFO L146 ILogger]: With dead ends: 227 [2019-05-23 11:24:09,271 INFO L146 ILogger]: Without dead ends: 150 [2019-05-23 11:24:09,272 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:24:09,273 INFO L146 ILogger]: Start minimizeSevpa. Operand 150 states. [2019-05-23 11:24:09,283 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 150 to 114. [2019-05-23 11:24:09,284 INFO L146 ILogger]: Start removeUnreachable. Operand 114 states. [2019-05-23 11:24:09,285 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2019-05-23 11:24:09,286 INFO L146 ILogger]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 65 [2019-05-23 11:24:09,286 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:09,286 INFO L146 ILogger]: Abstraction has 114 states and 120 transitions. [2019-05-23 11:24:09,286 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:24:09,286 INFO L146 ILogger]: Start isEmpty. Operand 114 states and 120 transitions. [2019-05-23 11:24:09,290 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 96 [2019-05-23 11:24:09,290 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:09,291 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:09,291 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:09,291 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:09,292 INFO L146 ILogger]: Analyzing trace with hash 1312541133, now seen corresponding path program 1 times [2019-05-23 11:24:09,292 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:09,292 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:09,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:09,293 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:09,293 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:09,334 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:09,512 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:24:09,513 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:09,513 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 11:24:09,529 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:09,595 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:09,597 INFO L146 ILogger]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2019-05-23 11:24:09,605 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:09,716 INFO L146 ILogger]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-05-23 11:24:09,746 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:09,746 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-05-23 11:24:09,747 INFO L146 ILogger]: Interpolant automaton has 9 states [2019-05-23 11:24:09,747 INFO L146 ILogger]: Constructing interpolant automaton starting with 9 interpolants. [2019-05-23 11:24:09,751 INFO L146 ILogger]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-05-23 11:24:09,751 INFO L146 ILogger]: Start difference. First operand 114 states and 120 transitions. Second operand 9 states. [2019-05-23 11:24:10,473 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:10,474 INFO L146 ILogger]: Finished difference Result 271 states and 290 transitions. [2019-05-23 11:24:10,481 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-05-23 11:24:10,481 INFO L146 ILogger]: Start accepts. Automaton has 9 states. Word has length 95 [2019-05-23 11:24:10,482 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:10,483 INFO L146 ILogger]: With dead ends: 271 [2019-05-23 11:24:10,483 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:24:10,484 INFO L146 ILogger]: 0 DeclaredPredicates, 103 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2019-05-23 11:24:10,485 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:24:10,503 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 156. [2019-05-23 11:24:10,503 INFO L146 ILogger]: Start removeUnreachable. Operand 156 states. [2019-05-23 11:24:10,507 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 156 states to 156 states and 165 transitions. [2019-05-23 11:24:10,507 INFO L146 ILogger]: Start accepts. Automaton has 156 states and 165 transitions. Word has length 95 [2019-05-23 11:24:10,508 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:10,508 INFO L146 ILogger]: Abstraction has 156 states and 165 transitions. [2019-05-23 11:24:10,508 INFO L146 ILogger]: Interpolant automaton has 9 states. [2019-05-23 11:24:10,508 INFO L146 ILogger]: Start isEmpty. Operand 156 states and 165 transitions. [2019-05-23 11:24:10,512 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 126 [2019-05-23 11:24:10,512 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:10,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:10,514 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:10,514 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:10,514 INFO L146 ILogger]: Analyzing trace with hash 1953639993, now seen corresponding path program 2 times [2019-05-23 11:24:10,514 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:10,515 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:10,515 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,516 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:10,516 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,584 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:10,828 INFO L146 ILogger]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:24:10,829 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:10,829 INFO L146 ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-05-23 11:24:10,830 INFO L146 ILogger]: Interpolant automaton has 4 states [2019-05-23 11:24:10,830 INFO L146 ILogger]: Constructing interpolant automaton starting with 4 interpolants. [2019-05-23 11:24:10,830 INFO L146 ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:24:10,830 INFO L146 ILogger]: Start difference. First operand 156 states and 165 transitions. Second operand 4 states. [2019-05-23 11:24:11,141 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:11,141 INFO L146 ILogger]: Finished difference Result 206 states and 218 transitions. [2019-05-23 11:24:11,142 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-05-23 11:24:11,143 INFO L146 ILogger]: Start accepts. Automaton has 4 states. Word has length 125 [2019-05-23 11:24:11,143 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:11,146 INFO L146 ILogger]: With dead ends: 206 [2019-05-23 11:24:11,147 INFO L146 ILogger]: Without dead ends: 162 [2019-05-23 11:24:11,149 INFO L146 ILogger]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-05-23 11:24:11,152 INFO L146 ILogger]: Start minimizeSevpa. Operand 162 states. [2019-05-23 11:24:11,164 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 162 to 157. [2019-05-23 11:24:11,165 INFO L146 ILogger]: Start removeUnreachable. Operand 157 states. [2019-05-23 11:24:11,166 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 157 states to 157 states and 166 transitions. [2019-05-23 11:24:11,166 INFO L146 ILogger]: Start accepts. Automaton has 157 states and 166 transitions. Word has length 125 [2019-05-23 11:24:11,166 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:11,167 INFO L146 ILogger]: Abstraction has 157 states and 166 transitions. [2019-05-23 11:24:11,167 INFO L146 ILogger]: Interpolant automaton has 4 states. [2019-05-23 11:24:11,167 INFO L146 ILogger]: Start isEmpty. Operand 157 states and 166 transitions. [2019-05-23 11:24:11,169 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:24:11,169 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:11,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:11,170 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:11,170 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:11,170 INFO L146 ILogger]: Analyzing trace with hash -1746631322, now seen corresponding path program 1 times [2019-05-23 11:24:11,171 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:11,171 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:11,172 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,172 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:11,172 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,294 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:11,908 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 5 [2019-05-23 11:24:12,924 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:12,924 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:12,924 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 11:24:12,938 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:12,987 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,989 INFO L146 ILogger]: Trace formula consists of 228 conjuncts, 49 conjunts are in the unsatisfiable core [2019-05-23 11:24:12,995 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:13,703 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:13,724 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:13,724 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 31 [2019-05-23 11:24:13,725 INFO L146 ILogger]: Interpolant automaton has 31 states [2019-05-23 11:24:13,725 INFO L146 ILogger]: Constructing interpolant automaton starting with 31 interpolants. [2019-05-23 11:24:13,726 INFO L146 ILogger]: CoverageRelationStatistics Valid=108, Invalid=822, Unknown=0, NotChecked=0, Total=930 [2019-05-23 11:24:13,726 INFO L146 ILogger]: Start difference. First operand 157 states and 166 transitions. Second operand 31 states. [2019-05-23 11:24:15,744 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:15,745 INFO L146 ILogger]: Finished difference Result 521 states and 555 transitions. [2019-05-23 11:24:15,746 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-05-23 11:24:15,746 INFO L146 ILogger]: Start accepts. Automaton has 31 states. Word has length 132 [2019-05-23 11:24:15,747 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:15,750 INFO L146 ILogger]: With dead ends: 521 [2019-05-23 11:24:15,750 INFO L146 ILogger]: Without dead ends: 513 [2019-05-23 11:24:15,751 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 122 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=340, Invalid=2416, Unknown=0, NotChecked=0, Total=2756 [2019-05-23 11:24:15,752 INFO L146 ILogger]: Start minimizeSevpa. Operand 513 states. [2019-05-23 11:24:15,770 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 513 to 247. [2019-05-23 11:24:15,771 INFO L146 ILogger]: Start removeUnreachable. Operand 247 states. [2019-05-23 11:24:15,772 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 247 states to 247 states and 264 transitions. [2019-05-23 11:24:15,772 INFO L146 ILogger]: Start accepts. Automaton has 247 states and 264 transitions. Word has length 132 [2019-05-23 11:24:15,772 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:15,772 INFO L146 ILogger]: Abstraction has 247 states and 264 transitions. [2019-05-23 11:24:15,773 INFO L146 ILogger]: Interpolant automaton has 31 states. [2019-05-23 11:24:15,773 INFO L146 ILogger]: Start isEmpty. Operand 247 states and 264 transitions. [2019-05-23 11:24:15,775 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:24:15,775 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:15,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:15,776 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:15,776 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:15,776 INFO L146 ILogger]: Analyzing trace with hash 216200992, now seen corresponding path program 1 times [2019-05-23 11:24:15,776 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:15,776 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:15,777 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:15,777 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:15,778 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:15,844 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,685 INFO L146 ILogger]: Checked inductivity of 33 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:24:17,685 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:17,685 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 11:24:17,694 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:17,755 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:17,757 INFO L146 ILogger]: Trace formula consists of 227 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:24:17,763 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:18,307 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 11:24:18,307 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:18,318 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:18,318 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 11:24:18,319 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:10 [2019-05-23 11:24:18,573 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 17 treesize of output 9 [2019-05-23 11:24:18,574 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:18,581 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:18,582 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:18,583 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:15 [2019-05-23 11:24:18,708 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 16 treesize of output 12 [2019-05-23 11:24:18,708 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:18,719 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:18,720 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:24:18,721 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:24 [2019-05-23 11:24:19,191 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:24:19,193 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:19,194 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2019-05-23 11:24:19,195 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:19,199 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:19,200 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:19,201 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:5 [2019-05-23 11:24:19,285 INFO L146 ILogger]: Checked inductivity of 33 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-05-23 11:24:19,303 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:19,303 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24] total 51 [2019-05-23 11:24:19,304 INFO L146 ILogger]: Interpolant automaton has 51 states [2019-05-23 11:24:19,304 INFO L146 ILogger]: Constructing interpolant automaton starting with 51 interpolants. [2019-05-23 11:24:19,306 INFO L146 ILogger]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2019-05-23 11:24:19,306 INFO L146 ILogger]: Start difference. First operand 247 states and 264 transitions. Second operand 51 states. [2019-05-23 11:24:22,193 WARN L146 ILogger]: Spent 105.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2019-05-23 11:24:25,272 WARN L146 ILogger]: Spent 108.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2019-05-23 11:24:26,236 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 47 [2019-05-23 11:24:26,621 WARN L146 ILogger]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 51 [2019-05-23 11:24:27,120 WARN L146 ILogger]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2019-05-23 11:24:27,454 WARN L146 ILogger]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2019-05-23 11:24:27,947 WARN L146 ILogger]: Spent 247.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2019-05-23 11:24:28,362 WARN L146 ILogger]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2019-05-23 11:24:28,688 WARN L146 ILogger]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-05-23 11:24:29,120 WARN L146 ILogger]: Spent 101.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 50 [2019-05-23 11:24:29,320 WARN L146 ILogger]: Spent 136.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2019-05-23 11:24:29,680 WARN L146 ILogger]: Spent 126.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2019-05-23 11:24:30,068 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:30,068 INFO L146 ILogger]: Finished difference Result 649 states and 691 transitions. [2019-05-23 11:24:30,068 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2019-05-23 11:24:30,068 INFO L146 ILogger]: Start accepts. Automaton has 51 states. Word has length 132 [2019-05-23 11:24:30,069 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:30,073 INFO L146 ILogger]: With dead ends: 649 [2019-05-23 11:24:30,073 INFO L146 ILogger]: Without dead ends: 627 [2019-05-23 11:24:30,078 INFO L146 ILogger]: 0 DeclaredPredicates, 241 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4825 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3333, Invalid=13697, Unknown=0, NotChecked=0, Total=17030 [2019-05-23 11:24:30,079 INFO L146 ILogger]: Start minimizeSevpa. Operand 627 states. [2019-05-23 11:24:30,101 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 627 to 345. [2019-05-23 11:24:30,101 INFO L146 ILogger]: Start removeUnreachable. Operand 345 states. [2019-05-23 11:24:30,102 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 345 states to 345 states and 368 transitions. [2019-05-23 11:24:30,103 INFO L146 ILogger]: Start accepts. Automaton has 345 states and 368 transitions. Word has length 132 [2019-05-23 11:24:30,103 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:30,103 INFO L146 ILogger]: Abstraction has 345 states and 368 transitions. [2019-05-23 11:24:30,103 INFO L146 ILogger]: Interpolant automaton has 51 states. [2019-05-23 11:24:30,103 INFO L146 ILogger]: Start isEmpty. Operand 345 states and 368 transitions. [2019-05-23 11:24:30,106 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:24:30,106 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:30,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:30,107 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:30,107 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:30,107 INFO L146 ILogger]: Analyzing trace with hash -2005690720, now seen corresponding path program 2 times [2019-05-23 11:24:30,107 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:30,107 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:30,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:30,108 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:30,108 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:30,192 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,699 INFO L146 ILogger]: Checked inductivity of 33 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-05-23 11:24:31,699 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:31,699 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 11:24:31,709 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:31,756 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:31,756 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,759 INFO L146 ILogger]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2019-05-23 11:24:31,765 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:32,007 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 17 treesize of output 9 [2019-05-23 11:24:32,008 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:32,012 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:32,012 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:32,012 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:12 [2019-05-23 11:24:32,259 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 11:24:32,260 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:32,369 WARN L146 ILogger]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-05-23 11:24:32,370 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:32,370 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 11:24:32,370 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2019-05-23 11:24:32,802 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:32,803 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 29 treesize of output 22 [2019-05-23 11:24:32,803 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:32,811 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:32,811 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:32,812 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2019-05-23 11:24:32,905 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:32,906 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:32,917 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:32,918 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 69 [2019-05-23 11:24:32,919 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:32,950 INFO L146 ILogger]: treesize reduction 21, result has 71.2 percent of original size [2019-05-23 11:24:32,951 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:32,952 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:47, output treesize:13 [2019-05-23 11:24:33,020 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 23 treesize of output 11 [2019-05-23 11:24:33,021 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:33,026 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:33,027 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 11:24:33,027 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:7 [2019-05-23 11:24:33,111 INFO L146 ILogger]: Checked inductivity of 33 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:24:33,130 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:33,130 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26] total 43 [2019-05-23 11:24:33,131 INFO L146 ILogger]: Interpolant automaton has 43 states [2019-05-23 11:24:33,131 INFO L146 ILogger]: Constructing interpolant automaton starting with 43 interpolants. [2019-05-23 11:24:33,132 INFO L146 ILogger]: CoverageRelationStatistics Valid=224, Invalid=1582, Unknown=0, NotChecked=0, Total=1806 [2019-05-23 11:24:33,132 INFO L146 ILogger]: Start difference. First operand 345 states and 368 transitions. Second operand 43 states. [2019-05-23 11:24:35,063 WARN L146 ILogger]: Spent 282.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2019-05-23 11:24:37,270 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:37,270 INFO L146 ILogger]: Finished difference Result 826 states and 884 transitions. [2019-05-23 11:24:37,277 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-05-23 11:24:37,278 INFO L146 ILogger]: Start accepts. Automaton has 43 states. Word has length 132 [2019-05-23 11:24:37,278 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:37,281 INFO L146 ILogger]: With dead ends: 826 [2019-05-23 11:24:37,281 INFO L146 ILogger]: Without dead ends: 696 [2019-05-23 11:24:37,284 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 110 SyntacticMatches, 7 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1951 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1287, Invalid=6195, Unknown=0, NotChecked=0, Total=7482 [2019-05-23 11:24:37,285 INFO L146 ILogger]: Start minimizeSevpa. Operand 696 states. [2019-05-23 11:24:37,302 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 696 to 529. [2019-05-23 11:24:37,302 INFO L146 ILogger]: Start removeUnreachable. Operand 529 states. [2019-05-23 11:24:37,304 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 529 states to 529 states and 563 transitions. [2019-05-23 11:24:37,304 INFO L146 ILogger]: Start accepts. Automaton has 529 states and 563 transitions. Word has length 132 [2019-05-23 11:24:37,304 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:37,304 INFO L146 ILogger]: Abstraction has 529 states and 563 transitions. [2019-05-23 11:24:37,304 INFO L146 ILogger]: Interpolant automaton has 43 states. [2019-05-23 11:24:37,305 INFO L146 ILogger]: Start isEmpty. Operand 529 states and 563 transitions. [2019-05-23 11:24:37,306 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:24:37,306 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:37,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:37,307 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:37,307 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:37,307 INFO L146 ILogger]: Analyzing trace with hash -1187829140, now seen corresponding path program 1 times [2019-05-23 11:24:37,307 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:37,307 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:37,308 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:37,308 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:37,308 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:37,341 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:37,776 WARN L146 ILogger]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-05-23 11:24:38,334 INFO L146 ILogger]: Checked inductivity of 33 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-05-23 11:24:38,334 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:38,334 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 11:24:38,343 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:38,381 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,382 INFO L146 ILogger]: Trace formula consists of 227 conjuncts, 46 conjunts are in the unsatisfiable core [2019-05-23 11:24:38,387 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:39,139 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 11:24:39,139 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:39,146 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:39,147 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 11:24:39,148 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:10 [2019-05-23 11:24:39,324 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 18 treesize of output 10 [2019-05-23 11:24:39,324 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:39,330 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:39,330 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:39,331 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:16 [2019-05-23 11:24:39,403 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 16 treesize of output 12 [2019-05-23 11:24:39,404 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:39,412 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:39,413 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-05-23 11:24:39,414 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2019-05-23 11:24:39,665 INFO L146 ILogger]: detected equality via solver [2019-05-23 11:24:39,666 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:39,666 INFO L146 ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 13 [2019-05-23 11:24:39,667 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:39,671 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:39,671 INFO L146 ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:39,671 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:6 [2019-05-23 11:24:39,796 INFO L146 ILogger]: Checked inductivity of 33 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-05-23 11:24:39,825 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:39,826 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24] total 38 [2019-05-23 11:24:39,826 INFO L146 ILogger]: Interpolant automaton has 38 states [2019-05-23 11:24:39,827 INFO L146 ILogger]: Constructing interpolant automaton starting with 38 interpolants. [2019-05-23 11:24:39,828 INFO L146 ILogger]: CoverageRelationStatistics Valid=161, Invalid=1245, Unknown=0, NotChecked=0, Total=1406 [2019-05-23 11:24:39,828 INFO L146 ILogger]: Start difference. First operand 529 states and 563 transitions. Second operand 38 states. [2019-05-23 11:24:45,880 WARN L146 ILogger]: Spent 165.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2019-05-23 11:24:52,496 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:52,496 INFO L146 ILogger]: Finished difference Result 1655 states and 1761 transitions. [2019-05-23 11:24:52,497 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2019-05-23 11:24:52,497 INFO L146 ILogger]: Start accepts. Automaton has 38 states. Word has length 132 [2019-05-23 11:24:52,497 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:52,505 INFO L146 ILogger]: With dead ends: 1655 [2019-05-23 11:24:52,505 INFO L146 ILogger]: Without dead ends: 1521 [2019-05-23 11:24:52,513 INFO L146 ILogger]: 0 DeclaredPredicates, 285 GetRequests, 111 SyntacticMatches, 4 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9644 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=3911, Invalid=25501, Unknown=0, NotChecked=0, Total=29412 [2019-05-23 11:24:52,514 INFO L146 ILogger]: Start minimizeSevpa. Operand 1521 states. [2019-05-23 11:24:52,551 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 1521 to 738. [2019-05-23 11:24:52,551 INFO L146 ILogger]: Start removeUnreachable. Operand 738 states. [2019-05-23 11:24:52,553 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 738 states to 738 states and 783 transitions. [2019-05-23 11:24:52,553 INFO L146 ILogger]: Start accepts. Automaton has 738 states and 783 transitions. Word has length 132 [2019-05-23 11:24:52,553 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:52,554 INFO L146 ILogger]: Abstraction has 738 states and 783 transitions. [2019-05-23 11:24:52,554 INFO L146 ILogger]: Interpolant automaton has 38 states. [2019-05-23 11:24:52,554 INFO L146 ILogger]: Start isEmpty. Operand 738 states and 783 transitions. [2019-05-23 11:24:52,556 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 133 [2019-05-23 11:24:52,556 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:52,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:52,557 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:52,557 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:52,557 INFO L146 ILogger]: Analyzing trace with hash -1342175712, now seen corresponding path program 1 times [2019-05-23 11:24:52,558 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:52,558 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:52,558 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:52,559 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:52,559 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:52,588 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:53,210 WARN L146 ILogger]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:24:53,462 WARN L146 ILogger]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2019-05-23 11:24:53,754 WARN L146 ILogger]: Spent 164.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 14 [2019-05-23 11:24:54,093 INFO L146 ILogger]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:24:54,094 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:54,094 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 11:24:54,103 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:54,142 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:54,144 INFO L146 ILogger]: Trace formula consists of 227 conjuncts, 62 conjunts are in the unsatisfiable core [2019-05-23 11:24:54,147 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:54,705 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:54,706 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 30 treesize of output 23 [2019-05-23 11:24:54,706 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:54,715 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:54,716 INFO L146 ILogger]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-05-23 11:24:54,716 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:35 [2019-05-23 11:24:54,767 INFO L146 ILogger]: detected not equals via solver [2019-05-23 11:24:54,768 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:54,769 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 39 treesize of output 26 [2019-05-23 11:24:54,769 INFO L146 ILogger]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-05-23 11:24:54,913 WARN L146 ILogger]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-05-23 11:24:54,913 INFO L146 ILogger]: treesize reduction 0, result has 100.0 percent of original size [2019-05-23 11:24:54,914 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 11:24:54,914 INFO L146 ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:20 [2019-05-23 11:24:55,366 INFO L146 ILogger]: Checked inductivity of 33 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-05-23 11:24:55,385 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:55,385 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 35 [2019-05-23 11:24:55,386 INFO L146 ILogger]: Interpolant automaton has 35 states [2019-05-23 11:24:55,386 INFO L146 ILogger]: Constructing interpolant automaton starting with 35 interpolants. [2019-05-23 11:24:55,386 INFO L146 ILogger]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2019-05-23 11:24:55,386 INFO L146 ILogger]: Start difference. First operand 738 states and 783 transitions. Second operand 35 states.