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/sep10_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:23:58,051 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:23:58,053 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:23:58,065 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:23:58,066 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:23:58,067 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:23:58,068 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:23:58,070 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:23:58,072 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:23:58,073 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:23:58,073 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:23:58,074 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:23:58,075 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:23:58,076 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:23:58,079 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:23:58,080 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:23:58,081 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:23:58,083 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:23:58,084 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:23:58,086 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:23:58,087 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:23:58,088 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:23:58,090 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:23:58,091 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:23:58,091 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:23:58,092 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:23:58,092 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:23:58,093 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:23:58,093 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:23:58,094 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:23:58,095 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:23:58,096 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:23:58,097 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:23:58,097 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:23:58,098 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:23:58,098 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:23:58,098 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:23:58,099 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:23:58,100 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:23:58,100 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:23:58,115 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:23:58,115 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:23:58,117 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:23:58,117 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:23:58,117 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:23:58,117 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:23:58,117 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:23:58,118 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:23:58,118 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:23:58,118 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:23:58,118 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:23:58,118 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:23:58,119 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:23:58,119 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:23:58,119 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:23:58,119 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:23:58,120 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:23:58,120 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:23:58,120 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:23:58,120 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:23:58,120 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:23:58,121 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:23:58,123 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:23:58,123 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:23:58,123 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:23:58,124 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:23:58,124 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:23:58,124 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:23:58,124 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 11:23:58,177 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:23:58,193 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:23:58,199 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:23:58,201 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:23:58,201 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:23:58,202 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/sep10_true-unreach-call.i [2019-05-23 11:23:58,287 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a6e100c/0a79a6a29e304464a290ff0f88c09c6e/FLAGfddb37c4d [2019-05-23 11:23:58,734 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:23:58,735 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/sep10_true-unreach-call.i [2019-05-23 11:23:58,742 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a6e100c/0a79a6a29e304464a290ff0f88c09c6e/FLAGfddb37c4d [2019-05-23 11:23:59,115 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29a6e100c/0a79a6a29e304464a290ff0f88c09c6e [2019-05-23 11:23:59,126 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:23:59,128 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:23:59,129 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:59,129 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:23:59,132 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:23:59,134 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,137 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20333ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59, skipping insertion in model container [2019-05-23 11:23:59,137 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,146 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:23:59,167 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:23:59,375 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:59,388 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:23:59,420 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:59,446 INFO L146 ILogger]: Completed translation [2019-05-23 11:23:59,447 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59 WrapperNode [2019-05-23 11:23:59,447 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:59,448 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:59,448 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:23:59,448 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:23:59,460 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,469 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,513 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:59,515 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:23:59,515 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:23:59,515 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:23:59,529 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,529 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,541 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,541 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,556 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,682 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,684 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (1/1) ... [2019-05-23 11:23:59,687 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:23:59,687 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:23:59,688 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:23:59,688 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:23:59,689 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (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 11:23:59,751 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:23:59,751 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:23:59,752 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:23:59,752 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:23:59,752 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:23:59,752 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:24:00,574 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:24:00,574 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:24:00,576 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:00 BoogieIcfgContainer [2019-05-23 11:24:00,576 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:24:00,577 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:24:00,578 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:24:00,583 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:24:00,583 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:23:59" (1/3) ... [2019-05-23 11:24:00,584 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296abf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:00, skipping insertion in model container [2019-05-23 11:24:00,584 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:59" (2/3) ... [2019-05-23 11:24:00,585 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296abf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:24:00, skipping insertion in model container [2019-05-23 11:24:00,585 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:24:00" (3/3) ... [2019-05-23 11:24:00,588 INFO L146 ILogger]: Analyzing ICFG sep10_true-unreach-call.i [2019-05-23 11:24:00,600 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:24:00,611 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:24:00,630 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:24:00,665 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:24:00,666 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:24:00,666 INFO L146 ILogger]: Hoare is true [2019-05-23 11:24:00,666 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:24:00,666 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:24:00,667 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:24:00,667 INFO L146 ILogger]: Difference is false [2019-05-23 11:24:00,667 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:24:00,667 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:24:00,686 INFO L146 ILogger]: Start isEmpty. Operand 120 states. [2019-05-23 11:24:00,695 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 63 [2019-05-23 11:24:00,695 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:00,696 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] [2019-05-23 11:24:00,699 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:00,704 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:00,705 INFO L146 ILogger]: Analyzing trace with hash -1539618111, now seen corresponding path program 1 times [2019-05-23 11:24:00,707 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:00,707 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:00,756 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:00,756 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:00,756 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:00,803 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:00,904 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 11:24:00,907 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:24:00,907 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:24:00,912 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:24:00,926 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:24:00,927 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:24:00,929 INFO L146 ILogger]: Start difference. First operand 120 states. Second operand 3 states. [2019-05-23 11:24:01,013 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:01,013 INFO L146 ILogger]: Finished difference Result 229 states and 255 transitions. [2019-05-23 11:24:01,014 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:24:01,015 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 62 [2019-05-23 11:24:01,016 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:01,028 INFO L146 ILogger]: With dead ends: 229 [2019-05-23 11:24:01,028 INFO L146 ILogger]: Without dead ends: 120 [2019-05-23 11:24:01,033 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 11:24:01,049 INFO L146 ILogger]: Start minimizeSevpa. Operand 120 states. [2019-05-23 11:24:01,071 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 120 to 115. [2019-05-23 11:24:01,072 INFO L146 ILogger]: Start removeUnreachable. Operand 115 states. [2019-05-23 11:24:01,075 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2019-05-23 11:24:01,076 INFO L146 ILogger]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 62 [2019-05-23 11:24:01,077 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:01,077 INFO L146 ILogger]: Abstraction has 115 states and 122 transitions. [2019-05-23 11:24:01,077 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:24:01,077 INFO L146 ILogger]: Start isEmpty. Operand 115 states and 122 transitions. [2019-05-23 11:24:01,080 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 70 [2019-05-23 11:24:01,081 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:01,081 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] [2019-05-23 11:24:01,081 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:01,082 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:01,082 INFO L146 ILogger]: Analyzing trace with hash -866477706, now seen corresponding path program 1 times [2019-05-23 11:24:01,082 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:01,082 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:01,083 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:01,084 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:01,084 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:01,108 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:01,210 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 11:24:01,210 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:01,211 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 11:24:01,228 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:01,267 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:01,269 INFO L146 ILogger]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:01,278 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:01,326 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 11:24:01,355 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:01,355 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:01,356 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:01,357 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:01,357 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:01,358 INFO L146 ILogger]: Start difference. First operand 115 states and 122 transitions. Second operand 6 states. [2019-05-23 11:24:01,800 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:01,800 INFO L146 ILogger]: Finished difference Result 263 states and 283 transitions. [2019-05-23 11:24:01,801 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:01,801 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 69 [2019-05-23 11:24:01,802 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:01,804 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:24:01,804 INFO L146 ILogger]: Without dead ends: 166 [2019-05-23 11:24:01,807 INFO L146 ILogger]: 0 DeclaredPredicates, 75 GetRequests, 69 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 11:24:01,807 INFO L146 ILogger]: Start minimizeSevpa. Operand 166 states. [2019-05-23 11:24:01,828 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 166 to 125. [2019-05-23 11:24:01,830 INFO L146 ILogger]: Start removeUnreachable. Operand 125 states. [2019-05-23 11:24:01,832 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 125 states to 125 states and 132 transitions. [2019-05-23 11:24:01,832 INFO L146 ILogger]: Start accepts. Automaton has 125 states and 132 transitions. Word has length 69 [2019-05-23 11:24:01,832 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:01,833 INFO L146 ILogger]: Abstraction has 125 states and 132 transitions. [2019-05-23 11:24:01,833 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:01,833 INFO L146 ILogger]: Start isEmpty. Operand 125 states and 132 transitions. [2019-05-23 11:24:01,835 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 107 [2019-05-23 11:24:01,835 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:01,835 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] [2019-05-23 11:24:01,835 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:01,836 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:01,836 INFO L146 ILogger]: Analyzing trace with hash -1426784878, now seen corresponding path program 1 times [2019-05-23 11:24:01,836 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:01,836 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:01,838 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:01,838 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:01,838 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:01,865 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:01,962 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 11:24:01,962 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:01,962 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 11:24:01,973 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:02,027 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:02,028 INFO L146 ILogger]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:24:02,033 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:02,097 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 11:24:02,118 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:24:02,119 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:24:02,119 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:24:02,120 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:24:02,120 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:24:02,120 INFO L146 ILogger]: Start difference. First operand 125 states and 132 transitions. Second operand 6 states. [2019-05-23 11:24:02,617 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:02,617 INFO L146 ILogger]: Finished difference Result 288 states and 309 transitions. [2019-05-23 11:24:02,619 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:24:02,619 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 106 [2019-05-23 11:24:02,620 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:02,622 INFO L146 ILogger]: With dead ends: 288 [2019-05-23 11:24:02,622 INFO L146 ILogger]: Without dead ends: 209 [2019-05-23 11:24:02,623 INFO L146 ILogger]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-05-23 11:24:02,624 INFO L146 ILogger]: Start minimizeSevpa. Operand 209 states. [2019-05-23 11:24:02,634 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 209 to 168. [2019-05-23 11:24:02,634 INFO L146 ILogger]: Start removeUnreachable. Operand 168 states. [2019-05-23 11:24:02,635 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 168 states to 168 states and 178 transitions. [2019-05-23 11:24:02,635 INFO L146 ILogger]: Start accepts. Automaton has 168 states and 178 transitions. Word has length 106 [2019-05-23 11:24:02,636 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:02,636 INFO L146 ILogger]: Abstraction has 168 states and 178 transitions. [2019-05-23 11:24:02,636 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:24:02,636 INFO L146 ILogger]: Start isEmpty. Operand 168 states and 178 transitions. [2019-05-23 11:24:02,639 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 144 [2019-05-23 11:24:02,639 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:02,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:02,639 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:02,640 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:02,640 INFO L146 ILogger]: Analyzing trace with hash 303794939, now seen corresponding path program 1 times [2019-05-23 11:24:02,640 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:02,640 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:02,641 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:02,641 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:02,642 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:02,684 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:02,830 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:24:02,830 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:02,830 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 11:24:02,848 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:02,906 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:02,907 INFO L146 ILogger]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:02,913 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:03,148 INFO L146 ILogger]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-05-23 11:24:03,169 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:03,170 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:24:03,170 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:24:03,170 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:24:03,171 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:24:03,171 INFO L146 ILogger]: Start difference. First operand 168 states and 178 transitions. Second operand 10 states. [2019-05-23 11:24:03,643 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:03,643 INFO L146 ILogger]: Finished difference Result 335 states and 356 transitions. [2019-05-23 11:24:03,644 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:24:03,644 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 143 [2019-05-23 11:24:03,644 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:03,645 INFO L146 ILogger]: With dead ends: 335 [2019-05-23 11:24:03,646 INFO L146 ILogger]: Without dead ends: 192 [2019-05-23 11:24:03,647 INFO L146 ILogger]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:03,647 INFO L146 ILogger]: Start minimizeSevpa. Operand 192 states. [2019-05-23 11:24:03,666 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 192 to 182. [2019-05-23 11:24:03,666 INFO L146 ILogger]: Start removeUnreachable. Operand 182 states. [2019-05-23 11:24:03,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2019-05-23 11:24:03,671 INFO L146 ILogger]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 143 [2019-05-23 11:24:03,672 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:03,672 INFO L146 ILogger]: Abstraction has 182 states and 192 transitions. [2019-05-23 11:24:03,672 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:24:03,672 INFO L146 ILogger]: Start isEmpty. Operand 182 states and 192 transitions. [2019-05-23 11:24:03,678 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 158 [2019-05-23 11:24:03,678 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:03,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:03,679 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:03,679 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:03,679 INFO L146 ILogger]: Analyzing trace with hash 1916510114, now seen corresponding path program 2 times [2019-05-23 11:24:03,679 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:03,679 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:03,682 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:03,682 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:03,682 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:03,744 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:04,009 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-05-23 11:24:04,010 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:04,010 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 11:24:04,020 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:04,085 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:04,085 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:04,087 INFO L146 ILogger]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:04,101 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:04,335 INFO L146 ILogger]: Checked inductivity of 69 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-05-23 11:24:04,354 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:04,355 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2019-05-23 11:24:04,355 INFO L146 ILogger]: Interpolant automaton has 14 states [2019-05-23 11:24:04,356 INFO L146 ILogger]: Constructing interpolant automaton starting with 14 interpolants. [2019-05-23 11:24:04,356 INFO L146 ILogger]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2019-05-23 11:24:04,356 INFO L146 ILogger]: Start difference. First operand 182 states and 192 transitions. Second operand 14 states. [2019-05-23 11:24:04,842 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:04,843 INFO L146 ILogger]: Finished difference Result 422 states and 451 transitions. [2019-05-23 11:24:04,843 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-05-23 11:24:04,844 INFO L146 ILogger]: Start accepts. Automaton has 14 states. Word has length 157 [2019-05-23 11:24:04,844 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:04,846 INFO L146 ILogger]: With dead ends: 422 [2019-05-23 11:24:04,846 INFO L146 ILogger]: Without dead ends: 272 [2019-05-23 11:24:04,848 INFO L146 ILogger]: 0 DeclaredPredicates, 179 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:24:04,848 INFO L146 ILogger]: Start minimizeSevpa. Operand 272 states. [2019-05-23 11:24:04,857 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 272 to 231. [2019-05-23 11:24:04,857 INFO L146 ILogger]: Start removeUnreachable. Operand 231 states. [2019-05-23 11:24:04,858 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 231 states to 231 states and 244 transitions. [2019-05-23 11:24:04,858 INFO L146 ILogger]: Start accepts. Automaton has 231 states and 244 transitions. Word has length 157 [2019-05-23 11:24:04,858 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:04,859 INFO L146 ILogger]: Abstraction has 231 states and 244 transitions. [2019-05-23 11:24:04,859 INFO L146 ILogger]: Interpolant automaton has 14 states. [2019-05-23 11:24:04,859 INFO L146 ILogger]: Start isEmpty. Operand 231 states and 244 transitions. [2019-05-23 11:24:04,861 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 195 [2019-05-23 11:24:04,862 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:04,862 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2019-05-23 11:24:04,862 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:04,863 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:04,863 INFO L146 ILogger]: Analyzing trace with hash -27182914, now seen corresponding path program 3 times [2019-05-23 11:24:04,863 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:04,863 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:04,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:04,864 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:04,864 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:04,911 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:05,076 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-05-23 11:24:05,076 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:05,076 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 11:24:05,085 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:05,141 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:24:05,141 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:05,142 INFO L146 ILogger]: Trace formula consists of 247 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:24:05,147 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:05,271 INFO L146 ILogger]: Checked inductivity of 154 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-05-23 11:24:05,290 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:05,290 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:24:05,291 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:24:05,291 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:24:05,291 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:24:05,292 INFO L146 ILogger]: Start difference. First operand 231 states and 244 transitions. Second operand 16 states. [2019-05-23 11:24:05,741 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:05,742 INFO L146 ILogger]: Finished difference Result 447 states and 474 transitions. [2019-05-23 11:24:05,749 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:24:05,749 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 194 [2019-05-23 11:24:05,749 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:05,751 INFO L146 ILogger]: With dead ends: 447 [2019-05-23 11:24:05,751 INFO L146 ILogger]: Without dead ends: 255 [2019-05-23 11:24:05,752 INFO L146 ILogger]: 0 DeclaredPredicates, 216 GetRequests, 190 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 11:24:05,752 INFO L146 ILogger]: Start minimizeSevpa. Operand 255 states. [2019-05-23 11:24:05,758 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 255 to 245. [2019-05-23 11:24:05,758 INFO L146 ILogger]: Start removeUnreachable. Operand 245 states. [2019-05-23 11:24:05,759 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 258 transitions. [2019-05-23 11:24:05,760 INFO L146 ILogger]: Start accepts. Automaton has 245 states and 258 transitions. Word has length 194 [2019-05-23 11:24:05,760 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:05,760 INFO L146 ILogger]: Abstraction has 245 states and 258 transitions. [2019-05-23 11:24:05,760 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:24:05,760 INFO L146 ILogger]: Start isEmpty. Operand 245 states and 258 transitions. [2019-05-23 11:24:05,763 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 209 [2019-05-23 11:24:05,763 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:05,763 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, 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] [2019-05-23 11:24:05,764 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:05,764 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:05,764 INFO L146 ILogger]: Analyzing trace with hash -181774217, now seen corresponding path program 4 times [2019-05-23 11:24:05,764 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:05,764 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:05,765 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:05,765 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:05,765 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:05,799 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:06,095 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:06,096 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:06,096 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 11:24:06,106 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:06,163 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:06,163 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:06,164 INFO L146 ILogger]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:06,168 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:06,256 INFO L146 ILogger]: Checked inductivity of 198 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:06,275 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:06,276 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:06,276 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:06,277 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:06,277 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:06,277 INFO L146 ILogger]: Start difference. First operand 245 states and 258 transitions. Second operand 15 states. [2019-05-23 11:24:06,484 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:06,484 INFO L146 ILogger]: Finished difference Result 456 states and 482 transitions. [2019-05-23 11:24:06,491 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:06,491 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 208 [2019-05-23 11:24:06,491 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:06,493 INFO L146 ILogger]: With dead ends: 456 [2019-05-23 11:24:06,493 INFO L146 ILogger]: Without dead ends: 257 [2019-05-23 11:24:06,494 INFO L146 ILogger]: 0 DeclaredPredicates, 230 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:06,494 INFO L146 ILogger]: Start minimizeSevpa. Operand 257 states. [2019-05-23 11:24:06,499 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 257 to 252. [2019-05-23 11:24:06,499 INFO L146 ILogger]: Start removeUnreachable. Operand 252 states. [2019-05-23 11:24:06,500 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 252 states to 252 states and 265 transitions. [2019-05-23 11:24:06,500 INFO L146 ILogger]: Start accepts. Automaton has 252 states and 265 transitions. Word has length 208 [2019-05-23 11:24:06,501 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:06,501 INFO L146 ILogger]: Abstraction has 252 states and 265 transitions. [2019-05-23 11:24:06,501 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:06,501 INFO L146 ILogger]: Start isEmpty. Operand 252 states and 265 transitions. [2019-05-23 11:24:06,503 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:24:06,504 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:06,504 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, 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] [2019-05-23 11:24:06,504 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:06,504 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:06,505 INFO L146 ILogger]: Analyzing trace with hash 2119176513, now seen corresponding path program 5 times [2019-05-23 11:24:06,505 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:06,505 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:06,506 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:06,506 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:06,506 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:06,536 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:06,964 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-05-23 11:24:06,964 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:06,964 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 11:24:06,974 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:07,087 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:24:07,088 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:07,089 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:07,091 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:07,234 INFO L146 ILogger]: Checked inductivity of 234 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2019-05-23 11:24:07,268 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:07,268 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:24:07,269 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:07,269 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:07,270 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:07,270 INFO L146 ILogger]: Start difference. First operand 252 states and 265 transitions. Second operand 22 states. [2019-05-23 11:24:08,152 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:08,152 INFO L146 ILogger]: Finished difference Result 541 states and 576 transitions. [2019-05-23 11:24:08,153 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:24:08,153 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:24:08,153 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:08,155 INFO L146 ILogger]: With dead ends: 541 [2019-05-23 11:24:08,155 INFO L146 ILogger]: Without dead ends: 342 [2019-05-23 11:24:08,156 INFO L146 ILogger]: 0 DeclaredPredicates, 253 GetRequests, 215 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 11:24:08,157 INFO L146 ILogger]: Start minimizeSevpa. Operand 342 states. [2019-05-23 11:24:08,162 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 342 to 301. [2019-05-23 11:24:08,162 INFO L146 ILogger]: Start removeUnreachable. Operand 301 states. [2019-05-23 11:24:08,163 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 301 states to 301 states and 317 transitions. [2019-05-23 11:24:08,164 INFO L146 ILogger]: Start accepts. Automaton has 301 states and 317 transitions. Word has length 215 [2019-05-23 11:24:08,164 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:08,164 INFO L146 ILogger]: Abstraction has 301 states and 317 transitions. [2019-05-23 11:24:08,164 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:08,165 INFO L146 ILogger]: Start isEmpty. Operand 301 states and 317 transitions. [2019-05-23 11:24:08,167 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 253 [2019-05-23 11:24:08,168 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:08,168 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, 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] [2019-05-23 11:24:08,168 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:08,168 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:08,169 INFO L146 ILogger]: Analyzing trace with hash 1502036637, now seen corresponding path program 6 times [2019-05-23 11:24:08,169 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:08,169 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:08,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,170 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:08,170 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:08,202 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,460 INFO L146 ILogger]: Checked inductivity of 370 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2019-05-23 11:24:08,461 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:08,461 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 11:24:08,470 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:08,659 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-05-23 11:24:08,659 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:08,661 INFO L146 ILogger]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:24:08,664 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:08,792 INFO L146 ILogger]: Checked inductivity of 370 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2019-05-23 11:24:08,812 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:08,813 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-05-23 11:24:08,813 INFO L146 ILogger]: Interpolant automaton has 24 states [2019-05-23 11:24:08,814 INFO L146 ILogger]: Constructing interpolant automaton starting with 24 interpolants. [2019-05-23 11:24:08,814 INFO L146 ILogger]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2019-05-23 11:24:08,814 INFO L146 ILogger]: Start difference. First operand 301 states and 317 transitions. Second operand 24 states. [2019-05-23 11:24:10,746 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:10,746 INFO L146 ILogger]: Finished difference Result 566 states and 599 transitions. [2019-05-23 11:24:10,747 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-05-23 11:24:10,747 INFO L146 ILogger]: Start accepts. Automaton has 24 states. Word has length 252 [2019-05-23 11:24:10,747 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:10,749 INFO L146 ILogger]: With dead ends: 566 [2019-05-23 11:24:10,749 INFO L146 ILogger]: Without dead ends: 325 [2019-05-23 11:24:10,750 INFO L146 ILogger]: 0 DeclaredPredicates, 288 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=395, Invalid=1497, Unknown=0, NotChecked=0, Total=1892 [2019-05-23 11:24:10,751 INFO L146 ILogger]: Start minimizeSevpa. Operand 325 states. [2019-05-23 11:24:10,756 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 325 to 315. [2019-05-23 11:24:10,756 INFO L146 ILogger]: Start removeUnreachable. Operand 315 states. [2019-05-23 11:24:10,757 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 315 states to 315 states and 331 transitions. [2019-05-23 11:24:10,757 INFO L146 ILogger]: Start accepts. Automaton has 315 states and 331 transitions. Word has length 252 [2019-05-23 11:24:10,757 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:10,757 INFO L146 ILogger]: Abstraction has 315 states and 331 transitions. [2019-05-23 11:24:10,758 INFO L146 ILogger]: Interpolant automaton has 24 states. [2019-05-23 11:24:10,758 INFO L146 ILogger]: Start isEmpty. Operand 315 states and 331 transitions. [2019-05-23 11:24:10,760 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 267 [2019-05-23 11:24:10,761 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:10,761 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, 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] [2019-05-23 11:24:10,761 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:10,761 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:10,762 INFO L146 ILogger]: Analyzing trace with hash 745701892, now seen corresponding path program 7 times [2019-05-23 11:24:10,762 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:10,762 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:10,763 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,763 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:10,763 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:10,796 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:11,138 INFO L146 ILogger]: Checked inductivity of 442 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:11,138 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:11,138 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 11:24:11,147 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:11,212 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:11,214 INFO L146 ILogger]: Trace formula consists of 417 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:11,218 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:11,322 INFO L146 ILogger]: Checked inductivity of 442 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:11,342 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:11,342 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:11,343 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:11,343 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:11,344 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:11,344 INFO L146 ILogger]: Start difference. First operand 315 states and 331 transitions. Second operand 21 states. [2019-05-23 11:24:11,670 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:11,670 INFO L146 ILogger]: Finished difference Result 575 states and 607 transitions. [2019-05-23 11:24:11,670 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:11,670 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 266 [2019-05-23 11:24:11,671 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:11,672 INFO L146 ILogger]: With dead ends: 575 [2019-05-23 11:24:11,672 INFO L146 ILogger]: Without dead ends: 327 [2019-05-23 11:24:11,673 INFO L146 ILogger]: 0 DeclaredPredicates, 300 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:24:11,674 INFO L146 ILogger]: Start minimizeSevpa. Operand 327 states. [2019-05-23 11:24:11,679 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 327 to 322. [2019-05-23 11:24:11,679 INFO L146 ILogger]: Start removeUnreachable. Operand 322 states. [2019-05-23 11:24:11,680 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 322 states to 322 states and 338 transitions. [2019-05-23 11:24:11,681 INFO L146 ILogger]: Start accepts. Automaton has 322 states and 338 transitions. Word has length 266 [2019-05-23 11:24:11,681 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:11,681 INFO L146 ILogger]: Abstraction has 322 states and 338 transitions. [2019-05-23 11:24:11,681 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:11,681 INFO L146 ILogger]: Start isEmpty. Operand 322 states and 338 transitions. [2019-05-23 11:24:11,683 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 274 [2019-05-23 11:24:11,683 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:11,683 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, 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] [2019-05-23 11:24:11,683 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:11,684 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:11,684 INFO L146 ILogger]: Analyzing trace with hash -403322290, now seen corresponding path program 8 times [2019-05-23 11:24:11,684 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:11,684 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:11,685 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,685 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:11,685 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:11,718 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,228 INFO L146 ILogger]: Checked inductivity of 499 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:12,228 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:12,228 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 11:24:12,240 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:12,313 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:12,313 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:12,315 INFO L146 ILogger]: Trace formula consists of 427 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:12,319 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:12,456 INFO L146 ILogger]: Checked inductivity of 499 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2019-05-23 11:24:12,476 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:12,476 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:12,477 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:12,477 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:12,477 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:12,477 INFO L146 ILogger]: Start difference. First operand 322 states and 338 transitions. Second operand 23 states. [2019-05-23 11:24:12,790 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:12,790 INFO L146 ILogger]: Finished difference Result 577 states and 609 transitions. [2019-05-23 11:24:12,792 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:12,793 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 273 [2019-05-23 11:24:12,793 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:12,794 INFO L146 ILogger]: With dead ends: 577 [2019-05-23 11:24:12,794 INFO L146 ILogger]: Without dead ends: 329 [2019-05-23 11:24:12,796 INFO L146 ILogger]: 0 DeclaredPredicates, 311 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:12,796 INFO L146 ILogger]: Start minimizeSevpa. Operand 329 states. [2019-05-23 11:24:12,801 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 329 to 329. [2019-05-23 11:24:12,801 INFO L146 ILogger]: Start removeUnreachable. Operand 329 states. [2019-05-23 11:24:12,802 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 329 states to 329 states and 345 transitions. [2019-05-23 11:24:12,803 INFO L146 ILogger]: Start accepts. Automaton has 329 states and 345 transitions. Word has length 273 [2019-05-23 11:24:12,803 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:12,803 INFO L146 ILogger]: Abstraction has 329 states and 345 transitions. [2019-05-23 11:24:12,803 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:12,803 INFO L146 ILogger]: Start isEmpty. Operand 329 states and 345 transitions. [2019-05-23 11:24:12,805 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 281 [2019-05-23 11:24:12,805 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:12,805 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, 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] [2019-05-23 11:24:12,805 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:12,805 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:12,806 INFO L146 ILogger]: Analyzing trace with hash 516455108, now seen corresponding path program 9 times [2019-05-23 11:24:12,806 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:12,806 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:12,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:12,807 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:12,807 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:12,852 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:13,055 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2019-05-23 11:24:13,055 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:13,055 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 11:24:13,065 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:13,209 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-05-23 11:24:13,209 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:13,211 INFO L146 ILogger]: Trace formula consists of 377 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:24:13,214 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:13,367 INFO L146 ILogger]: Checked inductivity of 563 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2019-05-23 11:24:13,387 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:13,387 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2019-05-23 11:24:13,388 INFO L146 ILogger]: Interpolant automaton has 20 states [2019-05-23 11:24:13,388 INFO L146 ILogger]: Constructing interpolant automaton starting with 20 interpolants. [2019-05-23 11:24:13,388 INFO L146 ILogger]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2019-05-23 11:24:13,388 INFO L146 ILogger]: Start difference. First operand 329 states and 345 transitions. Second operand 20 states. [2019-05-23 11:24:13,877 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:13,877 INFO L146 ILogger]: Finished difference Result 604 states and 640 transitions. [2019-05-23 11:24:13,877 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:24:13,877 INFO L146 ILogger]: Start accepts. Automaton has 20 states. Word has length 280 [2019-05-23 11:24:13,878 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:13,880 INFO L146 ILogger]: With dead ends: 604 [2019-05-23 11:24:13,880 INFO L146 ILogger]: Without dead ends: 419 [2019-05-23 11:24:13,882 INFO L146 ILogger]: 0 DeclaredPredicates, 314 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2019-05-23 11:24:13,883 INFO L146 ILogger]: Start minimizeSevpa. Operand 419 states. [2019-05-23 11:24:13,888 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 419 to 378. [2019-05-23 11:24:13,889 INFO L146 ILogger]: Start removeUnreachable. Operand 378 states. [2019-05-23 11:24:13,889 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 378 states to 378 states and 397 transitions. [2019-05-23 11:24:13,890 INFO L146 ILogger]: Start accepts. Automaton has 378 states and 397 transitions. Word has length 280 [2019-05-23 11:24:13,890 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:13,890 INFO L146 ILogger]: Abstraction has 378 states and 397 transitions. [2019-05-23 11:24:13,890 INFO L146 ILogger]: Interpolant automaton has 20 states. [2019-05-23 11:24:13,890 INFO L146 ILogger]: Start isEmpty. Operand 378 states and 397 transitions. [2019-05-23 11:24:13,892 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 318 [2019-05-23 11:24:13,892 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:13,892 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, 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] [2019-05-23 11:24:13,893 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:13,893 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:13,893 INFO L146 ILogger]: Analyzing trace with hash 2102484589, now seen corresponding path program 10 times [2019-05-23 11:24:13,893 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:13,893 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:13,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:13,894 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:13,894 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:13,933 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:14,763 INFO L146 ILogger]: Checked inductivity of 715 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2019-05-23 11:24:14,764 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:14,764 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 11:24:14,772 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:14,843 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:14,843 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:14,845 INFO L146 ILogger]: Trace formula consists of 451 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:14,850 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:14,994 INFO L146 ILogger]: Checked inductivity of 715 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2019-05-23 11:24:15,012 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:15,013 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:24:15,013 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:24:15,014 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:24:15,014 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:24:15,014 INFO L146 ILogger]: Start difference. First operand 378 states and 397 transitions. Second operand 15 states. [2019-05-23 11:24:15,351 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:15,352 INFO L146 ILogger]: Finished difference Result 676 states and 716 transitions. [2019-05-23 11:24:15,352 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:24:15,352 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 317 [2019-05-23 11:24:15,353 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:15,356 INFO L146 ILogger]: With dead ends: 676 [2019-05-23 11:24:15,356 INFO L146 ILogger]: Without dead ends: 456 [2019-05-23 11:24:15,357 INFO L146 ILogger]: 0 DeclaredPredicates, 339 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:24:15,357 INFO L146 ILogger]: Start minimizeSevpa. Operand 456 states. [2019-05-23 11:24:15,363 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 456 to 420. [2019-05-23 11:24:15,364 INFO L146 ILogger]: Start removeUnreachable. Operand 420 states. [2019-05-23 11:24:15,364 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 420 states to 420 states and 442 transitions. [2019-05-23 11:24:15,364 INFO L146 ILogger]: Start accepts. Automaton has 420 states and 442 transitions. Word has length 317 [2019-05-23 11:24:15,365 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:15,365 INFO L146 ILogger]: Abstraction has 420 states and 442 transitions. [2019-05-23 11:24:15,365 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:24:15,365 INFO L146 ILogger]: Start isEmpty. Operand 420 states and 442 transitions. [2019-05-23 11:24:15,367 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 348 [2019-05-23 11:24:15,367 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:15,368 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, 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] [2019-05-23 11:24:15,368 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:15,368 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:15,368 INFO L146 ILogger]: Analyzing trace with hash -211788461, now seen corresponding path program 11 times [2019-05-23 11:24:15,369 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:15,369 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:15,369 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:15,370 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:15,370 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:15,412 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:16,367 INFO L146 ILogger]: Checked inductivity of 868 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked. [2019-05-23 11:24:16,367 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:16,367 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 11:24:16,378 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:16,771 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:24:16,771 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:16,773 INFO L146 ILogger]: Trace formula consists of 537 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:24:16,779 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:17,030 INFO L146 ILogger]: Checked inductivity of 868 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2019-05-23 11:24:17,048 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:17,049 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2019-05-23 11:24:17,049 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:24:17,050 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:24:17,050 INFO L146 ILogger]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:24:17,050 INFO L146 ILogger]: Start difference. First operand 420 states and 442 transitions. Second operand 26 states. [2019-05-23 11:24:17,830 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:17,830 INFO L146 ILogger]: Finished difference Result 758 states and 804 transitions. [2019-05-23 11:24:17,831 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:24:17,831 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 347 [2019-05-23 11:24:17,831 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:17,834 INFO L146 ILogger]: With dead ends: 758 [2019-05-23 11:24:17,834 INFO L146 ILogger]: Without dead ends: 510 [2019-05-23 11:24:17,835 INFO L146 ILogger]: 0 DeclaredPredicates, 395 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=420, Invalid=1836, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:24:17,836 INFO L146 ILogger]: Start minimizeSevpa. Operand 510 states. [2019-05-23 11:24:17,843 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 510 to 469. [2019-05-23 11:24:17,843 INFO L146 ILogger]: Start removeUnreachable. Operand 469 states. [2019-05-23 11:24:17,844 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 469 states to 469 states and 494 transitions. [2019-05-23 11:24:17,844 INFO L146 ILogger]: Start accepts. Automaton has 469 states and 494 transitions. Word has length 347 [2019-05-23 11:24:17,844 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:17,844 INFO L146 ILogger]: Abstraction has 469 states and 494 transitions. [2019-05-23 11:24:17,844 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:24:17,845 INFO L146 ILogger]: Start isEmpty. Operand 469 states and 494 transitions. [2019-05-23 11:24:17,847 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 385 [2019-05-23 11:24:17,847 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:17,847 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, 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] [2019-05-23 11:24:17,847 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:17,848 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:17,848 INFO L146 ILogger]: Analyzing trace with hash -190740010, now seen corresponding path program 12 times [2019-05-23 11:24:17,848 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:17,848 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:17,849 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:17,849 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:17,849 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:17,889 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:19,087 INFO L146 ILogger]: Checked inductivity of 1087 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2019-05-23 11:24:19,087 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:19,087 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 11:24:19,096 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:19,716 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:24:19,717 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:19,720 INFO L146 ILogger]: Trace formula consists of 592 conjuncts, 26 conjunts are in the unsatisfiable core [2019-05-23 11:24:19,724 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:19,857 INFO L146 ILogger]: Checked inductivity of 1087 backedges. 64 proven. 217 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2019-05-23 11:24:19,877 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:19,877 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 22 [2019-05-23 11:24:19,878 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:24:19,878 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:24:19,878 INFO L146 ILogger]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:24:19,879 INFO L146 ILogger]: Start difference. First operand 469 states and 494 transitions. Second operand 22 states. [2019-05-23 11:24:20,577 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:20,577 INFO L146 ILogger]: Finished difference Result 830 states and 880 transitions. [2019-05-23 11:24:20,577 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-05-23 11:24:20,577 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 384 [2019-05-23 11:24:20,578 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:20,581 INFO L146 ILogger]: With dead ends: 830 [2019-05-23 11:24:20,581 INFO L146 ILogger]: Without dead ends: 547 [2019-05-23 11:24:20,583 INFO L146 ILogger]: 0 DeclaredPredicates, 446 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=523, Invalid=1547, Unknown=0, NotChecked=0, Total=2070 [2019-05-23 11:24:20,583 INFO L146 ILogger]: Start minimizeSevpa. Operand 547 states. [2019-05-23 11:24:20,590 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 547 to 511. [2019-05-23 11:24:20,590 INFO L146 ILogger]: Start removeUnreachable. Operand 511 states. [2019-05-23 11:24:20,591 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 511 states to 511 states and 539 transitions. [2019-05-23 11:24:20,591 INFO L146 ILogger]: Start accepts. Automaton has 511 states and 539 transitions. Word has length 384 [2019-05-23 11:24:20,592 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:20,592 INFO L146 ILogger]: Abstraction has 511 states and 539 transitions. [2019-05-23 11:24:20,592 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:24:20,592 INFO L146 ILogger]: Start isEmpty. Operand 511 states and 539 transitions. [2019-05-23 11:24:20,595 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 415 [2019-05-23 11:24:20,595 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:20,595 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, 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] [2019-05-23 11:24:20,595 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:20,596 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:20,596 INFO L146 ILogger]: Analyzing trace with hash -469407492, now seen corresponding path program 13 times [2019-05-23 11:24:20,596 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:20,596 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:20,597 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:20,597 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:20,597 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:20,637 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:21,996 INFO L146 ILogger]: Checked inductivity of 1300 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-05-23 11:24:21,996 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:21,996 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 11:24:22,006 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:22,106 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:22,108 INFO L146 ILogger]: Trace formula consists of 637 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:22,113 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:22,669 INFO L146 ILogger]: Checked inductivity of 1300 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2019-05-23 11:24:22,724 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:22,725 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:22,726 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:22,726 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:22,727 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:22,727 INFO L146 ILogger]: Start difference. First operand 511 states and 539 transitions. Second operand 21 states. [2019-05-23 11:24:23,656 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:23,656 INFO L146 ILogger]: Finished difference Result 900 states and 955 transitions. [2019-05-23 11:24:23,656 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:23,657 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 414 [2019-05-23 11:24:23,657 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:23,661 INFO L146 ILogger]: With dead ends: 900 [2019-05-23 11:24:23,661 INFO L146 ILogger]: Without dead ends: 589 [2019-05-23 11:24:23,662 INFO L146 ILogger]: 0 DeclaredPredicates, 448 GetRequests, 413 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 11:24:23,663 INFO L146 ILogger]: Start minimizeSevpa. Operand 589 states. [2019-05-23 11:24:23,670 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 589 to 553. [2019-05-23 11:24:23,670 INFO L146 ILogger]: Start removeUnreachable. Operand 553 states. [2019-05-23 11:24:23,671 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 553 states to 553 states and 584 transitions. [2019-05-23 11:24:23,672 INFO L146 ILogger]: Start accepts. Automaton has 553 states and 584 transitions. Word has length 414 [2019-05-23 11:24:23,672 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:23,672 INFO L146 ILogger]: Abstraction has 553 states and 584 transitions. [2019-05-23 11:24:23,672 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:23,672 INFO L146 ILogger]: Start isEmpty. Operand 553 states and 584 transitions. [2019-05-23 11:24:23,675 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 445 [2019-05-23 11:24:23,675 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:23,676 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, 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] [2019-05-23 11:24:23,676 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:23,676 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:23,676 INFO L146 ILogger]: Analyzing trace with hash -183042142, now seen corresponding path program 14 times [2019-05-23 11:24:23,677 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:23,677 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:23,677 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:23,678 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:24:23,678 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:23,719 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:24,981 INFO L146 ILogger]: Checked inductivity of 1543 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2019-05-23 11:24:24,981 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:24,981 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 11:24:24,989 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:24:25,103 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:24:25,103 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:25,106 INFO L146 ILogger]: Trace formula consists of 682 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:24:25,111 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:25,312 INFO L146 ILogger]: Checked inductivity of 1543 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 1174 trivial. 0 not checked. [2019-05-23 11:24:25,331 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:25,332 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:24:25,332 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:24:25,332 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:24:25,333 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:24:25,333 INFO L146 ILogger]: Start difference. First operand 553 states and 584 transitions. Second operand 23 states. [2019-05-23 11:24:25,810 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:25,810 INFO L146 ILogger]: Finished difference Result 934 states and 991 transitions. [2019-05-23 11:24:25,810 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:24:25,810 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 444 [2019-05-23 11:24:25,811 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:25,814 INFO L146 ILogger]: With dead ends: 934 [2019-05-23 11:24:25,814 INFO L146 ILogger]: Without dead ends: 595 [2019-05-23 11:24:25,816 INFO L146 ILogger]: 0 DeclaredPredicates, 482 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:24:25,816 INFO L146 ILogger]: Start minimizeSevpa. Operand 595 states. [2019-05-23 11:24:25,824 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 595 to 595. [2019-05-23 11:24:25,824 INFO L146 ILogger]: Start removeUnreachable. Operand 595 states. [2019-05-23 11:24:25,825 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 595 states to 595 states and 629 transitions. [2019-05-23 11:24:25,825 INFO L146 ILogger]: Start accepts. Automaton has 595 states and 629 transitions. Word has length 444 [2019-05-23 11:24:25,826 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:25,826 INFO L146 ILogger]: Abstraction has 595 states and 629 transitions. [2019-05-23 11:24:25,826 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:24:25,826 INFO L146 ILogger]: Start isEmpty. Operand 595 states and 629 transitions. [2019-05-23 11:24:25,829 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 475 [2019-05-23 11:24:25,830 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:25,830 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, 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] [2019-05-23 11:24:25,830 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:25,830 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:25,831 INFO L146 ILogger]: Analyzing trace with hash 1624583624, now seen corresponding path program 15 times [2019-05-23 11:24:25,831 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:25,831 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:25,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:25,832 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:25,832 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:25,898 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,669 INFO L146 ILogger]: Checked inductivity of 1816 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2019-05-23 11:24:26,670 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:26,670 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 11:24:26,678 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:24:26,931 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-05-23 11:24:26,932 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:26,934 INFO L146 ILogger]: Trace formula consists of 507 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:24:26,939 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:27,249 INFO L146 ILogger]: Checked inductivity of 1816 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2019-05-23 11:24:27,268 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:27,268 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:24:27,269 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:24:27,269 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:24:27,269 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:24:27,269 INFO L146 ILogger]: Start difference. First operand 595 states and 629 transitions. Second operand 17 states. [2019-05-23 11:24:27,573 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:27,574 INFO L146 ILogger]: Finished difference Result 763 states and 808 transitions. [2019-05-23 11:24:27,574 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:24:27,574 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 474 [2019-05-23 11:24:27,575 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:27,578 INFO L146 ILogger]: With dead ends: 763 [2019-05-23 11:24:27,578 INFO L146 ILogger]: Without dead ends: 607 [2019-05-23 11:24:27,579 INFO L146 ILogger]: 0 DeclaredPredicates, 500 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:24:27,580 INFO L146 ILogger]: Start minimizeSevpa. Operand 607 states. [2019-05-23 11:24:27,589 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 607 to 602. [2019-05-23 11:24:27,590 INFO L146 ILogger]: Start removeUnreachable. Operand 602 states. [2019-05-23 11:24:27,591 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 602 states to 602 states and 636 transitions. [2019-05-23 11:24:27,591 INFO L146 ILogger]: Start accepts. Automaton has 602 states and 636 transitions. Word has length 474 [2019-05-23 11:24:27,592 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:27,592 INFO L146 ILogger]: Abstraction has 602 states and 636 transitions. [2019-05-23 11:24:27,593 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:24:27,593 INFO L146 ILogger]: Start isEmpty. Operand 602 states and 636 transitions. [2019-05-23 11:24:27,605 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 482 [2019-05-23 11:24:27,605 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:27,606 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, 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] [2019-05-23 11:24:27,606 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:27,606 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:27,607 INFO L146 ILogger]: Analyzing trace with hash -1396796085, now seen corresponding path program 16 times [2019-05-23 11:24:27,607 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:27,607 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:27,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:27,608 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:27,608 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:27,677 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:28,816 INFO L146 ILogger]: Checked inductivity of 1859 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2019-05-23 11:24:28,816 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:28,816 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 11:24:28,825 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:24:28,925 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:24:28,926 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:28,927 INFO L146 ILogger]: Trace formula consists of 696 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:24:28,931 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:29,120 INFO L146 ILogger]: Checked inductivity of 1859 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2019-05-23 11:24:29,140 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:29,140 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:24:29,141 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:24:29,141 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:24:29,141 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:24:29,141 INFO L146 ILogger]: Start difference. First operand 602 states and 636 transitions. Second operand 19 states. [2019-05-23 11:24:29,402 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:29,403 INFO L146 ILogger]: Finished difference Result 770 states and 815 transitions. [2019-05-23 11:24:29,403 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:24:29,403 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 481 [2019-05-23 11:24:29,404 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:29,407 INFO L146 ILogger]: With dead ends: 770 [2019-05-23 11:24:29,407 INFO L146 ILogger]: Without dead ends: 614 [2019-05-23 11:24:29,408 INFO L146 ILogger]: 0 DeclaredPredicates, 511 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:24:29,409 INFO L146 ILogger]: Start minimizeSevpa. Operand 614 states. [2019-05-23 11:24:29,416 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 614 to 609. [2019-05-23 11:24:29,416 INFO L146 ILogger]: Start removeUnreachable. Operand 609 states. [2019-05-23 11:24:29,417 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 609 states to 609 states and 643 transitions. [2019-05-23 11:24:29,417 INFO L146 ILogger]: Start accepts. Automaton has 609 states and 643 transitions. Word has length 481 [2019-05-23 11:24:29,418 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:29,418 INFO L146 ILogger]: Abstraction has 609 states and 643 transitions. [2019-05-23 11:24:29,418 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:24:29,418 INFO L146 ILogger]: Start isEmpty. Operand 609 states and 643 transitions. [2019-05-23 11:24:29,421 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 489 [2019-05-23 11:24:29,421 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:29,422 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, 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] [2019-05-23 11:24:29,422 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:29,422 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:29,422 INFO L146 ILogger]: Analyzing trace with hash -1711455128, now seen corresponding path program 17 times [2019-05-23 11:24:29,423 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:29,423 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:29,423 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,423 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:29,424 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:29,492 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:29,900 INFO L146 ILogger]: Checked inductivity of 1909 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2019-05-23 11:24:29,900 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:29,900 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 11:24:29,910 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:24:31,587 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:24:31,587 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:31,592 INFO L146 ILogger]: Trace formula consists of 747 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:24:31,596 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:31,874 INFO L146 ILogger]: Checked inductivity of 1909 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2019-05-23 11:24:31,908 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:31,908 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:24:31,909 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:24:31,909 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:24:31,910 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:24:31,910 INFO L146 ILogger]: Start difference. First operand 609 states and 643 transitions. Second operand 21 states. [2019-05-23 11:24:32,323 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:32,323 INFO L146 ILogger]: Finished difference Result 772 states and 817 transitions. [2019-05-23 11:24:32,323 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:24:32,324 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 488 [2019-05-23 11:24:32,324 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:32,326 INFO L146 ILogger]: With dead ends: 772 [2019-05-23 11:24:32,326 INFO L146 ILogger]: Without dead ends: 616 [2019-05-23 11:24:32,327 INFO L146 ILogger]: 0 DeclaredPredicates, 522 GetRequests, 487 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 11:24:32,328 INFO L146 ILogger]: Start minimizeSevpa. Operand 616 states. [2019-05-23 11:24:32,335 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 616 to 616. [2019-05-23 11:24:32,335 INFO L146 ILogger]: Start removeUnreachable. Operand 616 states. [2019-05-23 11:24:32,337 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 616 states to 616 states and 650 transitions. [2019-05-23 11:24:32,337 INFO L146 ILogger]: Start accepts. Automaton has 616 states and 650 transitions. Word has length 488 [2019-05-23 11:24:32,337 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:32,337 INFO L146 ILogger]: Abstraction has 616 states and 650 transitions. [2019-05-23 11:24:32,338 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:24:32,338 INFO L146 ILogger]: Start isEmpty. Operand 616 states and 650 transitions. [2019-05-23 11:24:32,341 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 496 [2019-05-23 11:24:32,341 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:32,341 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, 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] [2019-05-23 11:24:32,342 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:32,342 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:32,342 INFO L146 ILogger]: Analyzing trace with hash -1657943381, now seen corresponding path program 18 times [2019-05-23 11:24:32,342 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:32,342 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:32,343 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,343 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:32,343 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:32,796 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:38,314 WARN L146 ILogger]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 14 [2019-05-23 11:24:40,970 INFO L146 ILogger]: Checked inductivity of 1966 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2019-05-23 11:24:40,970 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:24:40,970 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 11:24:40,980 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:24:42,229 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:24:42,230 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:24:42,241 INFO L146 ILogger]: Trace formula consists of 757 conjuncts, 145 conjunts are in the unsatisfiable core [2019-05-23 11:24:42,248 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:24:46,339 INFO L146 ILogger]: Checked inductivity of 1966 backedges. 0 proven. 1380 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2019-05-23 11:24:46,359 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:24:46,360 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 74] total 83 [2019-05-23 11:24:46,360 INFO L146 ILogger]: Interpolant automaton has 83 states [2019-05-23 11:24:46,360 INFO L146 ILogger]: Constructing interpolant automaton starting with 83 interpolants. [2019-05-23 11:24:46,362 INFO L146 ILogger]: CoverageRelationStatistics Valid=315, Invalid=6491, Unknown=0, NotChecked=0, Total=6806 [2019-05-23 11:24:46,362 INFO L146 ILogger]: Start difference. First operand 616 states and 650 transitions. Second operand 83 states. [2019-05-23 11:24:54,579 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:24:54,579 INFO L146 ILogger]: Finished difference Result 2108 states and 2239 transitions. [2019-05-23 11:24:54,580 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2019-05-23 11:24:54,580 INFO L146 ILogger]: Start accepts. Automaton has 83 states. Word has length 495 [2019-05-23 11:24:54,581 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:24:54,590 INFO L146 ILogger]: With dead ends: 2108 [2019-05-23 11:24:54,590 INFO L146 ILogger]: Without dead ends: 2100 [2019-05-23 11:24:54,597 INFO L146 ILogger]: 0 DeclaredPredicates, 641 GetRequests, 455 SyntacticMatches, 35 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8715 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=945, Invalid=22311, Unknown=0, NotChecked=0, Total=23256 [2019-05-23 11:24:54,598 INFO L146 ILogger]: Start minimizeSevpa. Operand 2100 states. [2019-05-23 11:24:54,621 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 2100 to 1002. [2019-05-23 11:24:54,622 INFO L146 ILogger]: Start removeUnreachable. Operand 1002 states. [2019-05-23 11:24:54,624 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1068 transitions. [2019-05-23 11:24:54,624 INFO L146 ILogger]: Start accepts. Automaton has 1002 states and 1068 transitions. Word has length 495 [2019-05-23 11:24:54,625 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:24:54,625 INFO L146 ILogger]: Abstraction has 1002 states and 1068 transitions. [2019-05-23 11:24:54,625 INFO L146 ILogger]: Interpolant automaton has 83 states. [2019-05-23 11:24:54,625 INFO L146 ILogger]: Start isEmpty. Operand 1002 states and 1068 transitions. [2019-05-23 11:24:54,628 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 496 [2019-05-23 11:24:54,629 INFO L146 ILogger]: Found error trace [2019-05-23 11:24:54,629 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, 9, 9, 9, 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] [2019-05-23 11:24:54,629 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:24:54,629 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:24:54,630 INFO L146 ILogger]: Analyzing trace with hash 674191601, now seen corresponding path program 1 times [2019-05-23 11:24:54,630 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:24:54,630 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:24:54,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:24:54,631 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:24:54,631 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY