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/avg10_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-7aa59a0 [2019-05-23 11:22:59,014 INFO L146 ILogger]: Resetting all preferences to default values... [2019-05-23 11:22:59,016 INFO L146 ILogger]: Resetting UltimateCore preferences to default values [2019-05-23 11:22:59,036 INFO L146 ILogger]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-05-23 11:22:59,036 INFO L146 ILogger]: Resetting Boogie Preprocessor preferences to default values [2019-05-23 11:22:59,037 INFO L146 ILogger]: Resetting Boogie Procedure Inliner preferences to default values [2019-05-23 11:22:59,040 INFO L146 ILogger]: Resetting Abstract Interpretation preferences to default values [2019-05-23 11:22:59,042 INFO L146 ILogger]: Resetting LassoRanker preferences to default values [2019-05-23 11:22:59,045 INFO L146 ILogger]: Resetting Reaching Definitions preferences to default values [2019-05-23 11:22:59,046 INFO L146 ILogger]: Resetting SyntaxChecker preferences to default values [2019-05-23 11:22:59,048 INFO L146 ILogger]: Büchi Program Product provides no preferences, ignoring... [2019-05-23 11:22:59,048 INFO L146 ILogger]: Resetting LTL2Aut preferences to default values [2019-05-23 11:22:59,050 INFO L146 ILogger]: Resetting PEA to Boogie preferences to default values [2019-05-23 11:22:59,051 INFO L146 ILogger]: Resetting BlockEncodingV2 preferences to default values [2019-05-23 11:22:59,054 INFO L146 ILogger]: Resetting ChcToBoogie preferences to default values [2019-05-23 11:22:59,055 INFO L146 ILogger]: Resetting AutomataScriptInterpreter preferences to default values [2019-05-23 11:22:59,057 INFO L146 ILogger]: Resetting BuchiAutomizer preferences to default values [2019-05-23 11:22:59,061 INFO L146 ILogger]: Resetting CACSL2BoogieTranslator preferences to default values [2019-05-23 11:22:59,064 INFO L146 ILogger]: Resetting CodeCheck preferences to default values [2019-05-23 11:22:59,065 INFO L146 ILogger]: Resetting InvariantSynthesis preferences to default values [2019-05-23 11:22:59,068 INFO L146 ILogger]: Resetting RCFGBuilder preferences to default values [2019-05-23 11:22:59,069 INFO L146 ILogger]: Resetting TraceAbstraction preferences to default values [2019-05-23 11:22:59,076 INFO L146 ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-05-23 11:22:59,076 INFO L146 ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-05-23 11:22:59,076 INFO L146 ILogger]: Resetting TreeAutomizer preferences to default values [2019-05-23 11:22:59,077 INFO L146 ILogger]: Resetting IcfgToChc preferences to default values [2019-05-23 11:22:59,077 INFO L146 ILogger]: Resetting IcfgTransformer preferences to default values [2019-05-23 11:22:59,078 INFO L146 ILogger]: ReqToTest provides no preferences, ignoring... [2019-05-23 11:22:59,079 INFO L146 ILogger]: Resetting Boogie Printer preferences to default values [2019-05-23 11:22:59,079 INFO L146 ILogger]: Resetting ChcSmtPrinter preferences to default values [2019-05-23 11:22:59,080 INFO L146 ILogger]: Resetting ReqPrinter preferences to default values [2019-05-23 11:22:59,081 INFO L146 ILogger]: Resetting Witness Printer preferences to default values [2019-05-23 11:22:59,082 INFO L146 ILogger]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-05-23 11:22:59,082 INFO L146 ILogger]: Resetting CDTParser preferences to default values [2019-05-23 11:22:59,082 INFO L146 ILogger]: AutomataScriptParser provides no preferences, ignoring... [2019-05-23 11:22:59,083 INFO L146 ILogger]: ReqParser provides no preferences, ignoring... [2019-05-23 11:22:59,083 INFO L146 ILogger]: Resetting SmtParser preferences to default values [2019-05-23 11:22:59,084 INFO L146 ILogger]: Resetting Witness Parser preferences to default values [2019-05-23 11:22:59,085 INFO L146 ILogger]: Finished resetting all preferences to default values... [2019-05-23 11:22:59,085 INFO L146 ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-05-23 11:22:59,099 INFO L146 ILogger]: Loading preferences was successful [2019-05-23 11:22:59,099 INFO L146 ILogger]: Preferences different from defaults after loading the file: [2019-05-23 11:22:59,100 INFO L146 ILogger]: Preferences of BlockEncodingV2 differ from their defaults: [2019-05-23 11:22:59,100 INFO L146 ILogger]: * Create parallel compositions if possible=false [2019-05-23 11:22:59,100 INFO L146 ILogger]: * Use SBE=true [2019-05-23 11:22:59,101 INFO L146 ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-05-23 11:22:59,101 INFO L146 ILogger]: * sizeof long=4 [2019-05-23 11:22:59,101 INFO L146 ILogger]: * Overapproximate operations on floating types=true [2019-05-23 11:22:59,101 INFO L146 ILogger]: * sizeof POINTER=4 [2019-05-23 11:22:59,102 INFO L146 ILogger]: * Check division by zero=IGNORE [2019-05-23 11:22:59,102 INFO L146 ILogger]: * Pointer to allocated memory at dereference=IGNORE [2019-05-23 11:22:59,102 INFO L146 ILogger]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-05-23 11:22:59,102 INFO L146 ILogger]: * Check array bounds for arrays that are off heap=IGNORE [2019-05-23 11:22:59,102 INFO L146 ILogger]: * sizeof long double=12 [2019-05-23 11:22:59,102 INFO L146 ILogger]: * Check if freed pointer was valid=false [2019-05-23 11:22:59,103 INFO L146 ILogger]: * Use constant arrays=true [2019-05-23 11:22:59,103 INFO L146 ILogger]: * Pointer base address is valid at dereference=IGNORE [2019-05-23 11:22:59,103 INFO L146 ILogger]: Preferences of RCFGBuilder differ from their defaults: [2019-05-23 11:22:59,103 INFO L146 ILogger]: * Size of a code block=SequenceOfStatements [2019-05-23 11:22:59,103 INFO L146 ILogger]: * To the following directory=./dump/ [2019-05-23 11:22:59,104 INFO L146 ILogger]: * SMT solver=External_DefaultMode [2019-05-23 11:22:59,104 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-05-23 11:22:59,104 INFO L146 ILogger]: Preferences of TraceAbstraction differ from their defaults: [2019-05-23 11:22:59,104 INFO L146 ILogger]: * Compute Interpolants along a Counterexample=FPandBP [2019-05-23 11:22:59,104 INFO L146 ILogger]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-05-23 11:22:59,105 INFO L146 ILogger]: * Trace refinement strategy=CAMEL [2019-05-23 11:22:59,105 INFO L146 ILogger]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-05-23 11:22:59,105 INFO L146 ILogger]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-05-23 11:22:59,105 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 11:22:59,138 INFO L146 ILogger]: Repository-Root is: /tmp [2019-05-23 11:22:59,149 INFO L146 ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-05-23 11:22:59,152 INFO L146 ILogger]: [Toolchain 1]: Toolchain selected. [2019-05-23 11:22:59,153 INFO L146 ILogger]: Initializing CDTParser... [2019-05-23 11:22:59,153 INFO L146 ILogger]: CDTParser initialized [2019-05-23 11:22:59,154 INFO L146 ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/reducercommutativity/avg10_true-unreach-call_true-termination.i [2019-05-23 11:22:59,213 INFO L146 ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae777787f/6b00405209d64e3a916dd4ad823c2e14/FLAGd669ce136 [2019-05-23 11:22:59,674 INFO L146 ILogger]: Found 1 translation units. [2019-05-23 11:22:59,675 INFO L146 ILogger]: Scanning /storage/repos/svcomp/c/reducercommutativity/avg10_true-unreach-call_true-termination.i [2019-05-23 11:22:59,683 INFO L146 ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae777787f/6b00405209d64e3a916dd4ad823c2e14/FLAGd669ce136 [2019-05-23 11:23:00,038 INFO L146 ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae777787f/6b00405209d64e3a916dd4ad823c2e14 [2019-05-23 11:23:00,047 INFO L146 ILogger]: ####################### [Toolchain 1] ####################### [2019-05-23 11:23:00,049 INFO L146 ILogger]: Walking toolchain with 5 elements. [2019-05-23 11:23:00,050 INFO L146 ILogger]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:00,050 INFO L146 ILogger]: Initializing CACSL2BoogieTranslator... [2019-05-23 11:23:00,054 INFO L146 ILogger]: CACSL2BoogieTranslator initialized [2019-05-23 11:23:00,056 INFO L146 ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,059 INFO L146 ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7e4faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00, skipping insertion in model container [2019-05-23 11:23:00,059 INFO L146 ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,067 INFO L146 ILogger]: Starting translation in SV-COMP mode [2019-05-23 11:23:00,089 INFO L146 ILogger]: Built tables and reachable declarations [2019-05-23 11:23:00,288 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:00,298 INFO L146 ILogger]: Completed pre-run [2019-05-23 11:23:00,323 INFO L146 ILogger]: Analyzing one entry point: main [2019-05-23 11:23:00,338 INFO L146 ILogger]: Completed translation [2019-05-23 11:23:00,339 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00 WrapperNode [2019-05-23 11:23:00,339 INFO L146 ILogger]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-05-23 11:23:00,340 INFO L146 ILogger]: ------------------------Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:00,340 INFO L146 ILogger]: Initializing Boogie Procedure Inliner... [2019-05-23 11:23:00,340 INFO L146 ILogger]: Boogie Procedure Inliner initialized [2019-05-23 11:23:00,349 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,359 INFO L146 ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,388 INFO L146 ILogger]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-05-23 11:23:00,389 INFO L146 ILogger]: ------------------------Boogie Preprocessor---------------------------- [2019-05-23 11:23:00,389 INFO L146 ILogger]: Initializing Boogie Preprocessor... [2019-05-23 11:23:00,389 INFO L146 ILogger]: Boogie Preprocessor initialized [2019-05-23 11:23:00,399 INFO L146 ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,399 INFO L146 ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,402 INFO L146 ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,403 INFO L146 ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,410 INFO L146 ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,517 INFO L146 ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,519 INFO L146 ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (1/1) ... [2019-05-23 11:23:00,522 INFO L146 ILogger]: ------------------------ END Boogie Preprocessor---------------------------- [2019-05-23 11:23:00,523 INFO L146 ILogger]: ------------------------RCFGBuilder---------------------------- [2019-05-23 11:23:00,523 INFO L146 ILogger]: Initializing RCFGBuilder... [2019-05-23 11:23:00,523 INFO L146 ILogger]: RCFGBuilder initialized [2019-05-23 11:23:00,524 INFO L146 ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (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 11:23:00,591 INFO L146 ILogger]: Found specification of procedure write~int [2019-05-23 11:23:00,591 INFO L146 ILogger]: Found specification of procedure ULTIMATE.start [2019-05-23 11:23:00,591 INFO L146 ILogger]: Found implementation of procedure ULTIMATE.start [2019-05-23 11:23:00,591 INFO L146 ILogger]: Found specification of procedure read~int [2019-05-23 11:23:00,592 INFO L146 ILogger]: Found specification of procedure #Ultimate.allocOnStack [2019-05-23 11:23:00,592 INFO L146 ILogger]: Found specification of procedure ULTIMATE.dealloc [2019-05-23 11:23:01,304 INFO L146 ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-05-23 11:23:01,305 INFO L146 ILogger]: Removed 15 assume(true) statements. [2019-05-23 11:23:01,306 INFO L146 ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:01 BoogieIcfgContainer [2019-05-23 11:23:01,306 INFO L146 ILogger]: ------------------------ END RCFGBuilder---------------------------- [2019-05-23 11:23:01,307 INFO L146 ILogger]: ------------------------TraceAbstraction---------------------------- [2019-05-23 11:23:01,307 INFO L146 ILogger]: Initializing TraceAbstraction... [2019-05-23 11:23:01,310 INFO L146 ILogger]: TraceAbstraction initialized [2019-05-23 11:23:01,310 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:23:00" (1/3) ... [2019-05-23 11:23:01,311 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332c5933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:01, skipping insertion in model container [2019-05-23 11:23:01,311 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:23:00" (2/3) ... [2019-05-23 11:23:01,312 INFO L146 ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332c5933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:23:01, skipping insertion in model container [2019-05-23 11:23:01,312 INFO L146 ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:23:01" (3/3) ... [2019-05-23 11:23:01,314 INFO L146 ILogger]: Analyzing ICFG avg10_true-unreach-call_true-termination.i [2019-05-23 11:23:01,324 INFO L146 ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-05-23 11:23:01,331 INFO L146 ILogger]: Appying trace abstraction to program that has 1 error locations. [2019-05-23 11:23:01,347 INFO L146 ILogger]: Starting to check reachability of 1 error locations. [2019-05-23 11:23:01,374 INFO L146 ILogger]: Using default assertion order modulation [2019-05-23 11:23:01,375 INFO L146 ILogger]: Interprodecural is true [2019-05-23 11:23:01,375 INFO L146 ILogger]: Hoare is true [2019-05-23 11:23:01,375 INFO L146 ILogger]: Compute interpolants for FPandBP [2019-05-23 11:23:01,375 INFO L146 ILogger]: Backedges is STRAIGHT_LINE [2019-05-23 11:23:01,375 INFO L146 ILogger]: Determinization is PREDICATE_ABSTRACTION [2019-05-23 11:23:01,376 INFO L146 ILogger]: Difference is false [2019-05-23 11:23:01,376 INFO L146 ILogger]: Minimize is MINIMIZE_SEVPA [2019-05-23 11:23:01,376 INFO L146 ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-05-23 11:23:01,395 INFO L146 ILogger]: Start isEmpty. Operand 105 states. [2019-05-23 11:23:01,403 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 69 [2019-05-23 11:23:01,403 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:01,404 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:01,406 INFO L146 ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:01,410 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:01,411 INFO L146 ILogger]: Analyzing trace with hash -503519154, now seen corresponding path program 1 times [2019-05-23 11:23:01,412 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:01,412 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:01,452 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:01,452 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:01,452 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:01,495 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:01,609 INFO L146 ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:01,611 INFO L146 ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-05-23 11:23:01,612 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-05-23 11:23:01,616 INFO L146 ILogger]: Interpolant automaton has 3 states [2019-05-23 11:23:01,629 INFO L146 ILogger]: Constructing interpolant automaton starting with 3 interpolants. [2019-05-23 11:23:01,630 INFO L146 ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:23:01,632 INFO L146 ILogger]: Start difference. First operand 105 states. Second operand 3 states. [2019-05-23 11:23:01,743 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:01,744 INFO L146 ILogger]: Finished difference Result 199 states and 219 transitions. [2019-05-23 11:23:01,747 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-05-23 11:23:01,749 INFO L146 ILogger]: Start accepts. Automaton has 3 states. Word has length 68 [2019-05-23 11:23:01,749 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:01,763 INFO L146 ILogger]: With dead ends: 199 [2019-05-23 11:23:01,764 INFO L146 ILogger]: Without dead ends: 105 [2019-05-23 11:23:01,768 INFO L146 ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-05-23 11:23:01,792 INFO L146 ILogger]: Start minimizeSevpa. Operand 105 states. [2019-05-23 11:23:01,824 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 105 to 100. [2019-05-23 11:23:01,826 INFO L146 ILogger]: Start removeUnreachable. Operand 100 states. [2019-05-23 11:23:01,831 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2019-05-23 11:23:01,834 INFO L146 ILogger]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 68 [2019-05-23 11:23:01,835 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:01,835 INFO L146 ILogger]: Abstraction has 100 states and 104 transitions. [2019-05-23 11:23:01,835 INFO L146 ILogger]: Interpolant automaton has 3 states. [2019-05-23 11:23:01,836 INFO L146 ILogger]: Start isEmpty. Operand 100 states and 104 transitions. [2019-05-23 11:23:01,839 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 76 [2019-05-23 11:23:01,839 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:01,840 INFO L146 ILogger]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:01,841 INFO L146 ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:01,842 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:01,842 INFO L146 ILogger]: Analyzing trace with hash -1483383517, now seen corresponding path program 1 times [2019-05-23 11:23:01,842 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:01,842 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:01,843 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:01,844 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:01,844 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:01,889 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:02,092 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-05-23 11:23:02,092 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:02,092 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:02,112 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:02,178 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:02,180 INFO L146 ILogger]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:02,188 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:02,254 INFO L146 ILogger]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-05-23 11:23:02,283 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:02,283 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:02,285 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:02,285 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:02,285 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:02,285 INFO L146 ILogger]: Start difference. First operand 100 states and 104 transitions. Second operand 6 states. [2019-05-23 11:23:02,662 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:02,663 INFO L146 ILogger]: Finished difference Result 212 states and 223 transitions. [2019-05-23 11:23:02,664 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:02,665 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 75 [2019-05-23 11:23:02,665 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:02,666 INFO L146 ILogger]: With dead ends: 212 [2019-05-23 11:23:02,668 INFO L146 ILogger]: Without dead ends: 130 [2019-05-23 11:23:02,670 INFO L146 ILogger]: 0 DeclaredPredicates, 81 GetRequests, 75 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 11:23:02,672 INFO L146 ILogger]: Start minimizeSevpa. Operand 130 states. [2019-05-23 11:23:02,680 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 130 to 110. [2019-05-23 11:23:02,680 INFO L146 ILogger]: Start removeUnreachable. Operand 110 states. [2019-05-23 11:23:02,682 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2019-05-23 11:23:02,682 INFO L146 ILogger]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 75 [2019-05-23 11:23:02,683 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:02,683 INFO L146 ILogger]: Abstraction has 110 states and 114 transitions. [2019-05-23 11:23:02,683 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:02,683 INFO L146 ILogger]: Start isEmpty. Operand 110 states and 114 transitions. [2019-05-23 11:23:02,686 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 104 [2019-05-23 11:23:02,686 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:02,686 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] [2019-05-23 11:23:02,686 INFO L146 ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:02,687 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:02,687 INFO L146 ILogger]: Analyzing trace with hash -483601032, now seen corresponding path program 1 times [2019-05-23 11:23:02,687 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:02,687 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:02,688 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:02,689 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:02,689 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:02,713 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:02,851 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-05-23 11:23:02,851 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:02,852 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:02,867 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:02,920 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:02,921 INFO L146 ILogger]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-05-23 11:23:02,925 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:02,984 INFO L146 ILogger]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-05-23 11:23:03,005 INFO L146 ILogger]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-05-23 11:23:03,005 INFO L146 ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2019-05-23 11:23:03,006 INFO L146 ILogger]: Interpolant automaton has 6 states [2019-05-23 11:23:03,006 INFO L146 ILogger]: Constructing interpolant automaton starting with 6 interpolants. [2019-05-23 11:23:03,007 INFO L146 ILogger]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-05-23 11:23:03,007 INFO L146 ILogger]: Start difference. First operand 110 states and 114 transitions. Second operand 6 states. [2019-05-23 11:23:03,535 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:03,535 INFO L146 ILogger]: Finished difference Result 221 states and 231 transitions. [2019-05-23 11:23:03,537 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-05-23 11:23:03,537 INFO L146 ILogger]: Start accepts. Automaton has 6 states. Word has length 103 [2019-05-23 11:23:03,538 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:03,539 INFO L146 ILogger]: With dead ends: 221 [2019-05-23 11:23:03,539 INFO L146 ILogger]: Without dead ends: 152 [2019-05-23 11:23:03,540 INFO L146 ILogger]: 0 DeclaredPredicates, 111 GetRequests, 105 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 11:23:03,541 INFO L146 ILogger]: Start minimizeSevpa. Operand 152 states. [2019-05-23 11:23:03,550 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 152 to 132. [2019-05-23 11:23:03,550 INFO L146 ILogger]: Start removeUnreachable. Operand 132 states. [2019-05-23 11:23:03,551 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2019-05-23 11:23:03,551 INFO L146 ILogger]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 103 [2019-05-23 11:23:03,552 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:03,552 INFO L146 ILogger]: Abstraction has 132 states and 136 transitions. [2019-05-23 11:23:03,552 INFO L146 ILogger]: Interpolant automaton has 6 states. [2019-05-23 11:23:03,552 INFO L146 ILogger]: Start isEmpty. Operand 132 states and 136 transitions. [2019-05-23 11:23:03,554 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 132 [2019-05-23 11:23:03,554 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:03,555 INFO L146 ILogger]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:03,555 INFO L146 ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:03,555 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:03,555 INFO L146 ILogger]: Analyzing trace with hash 46998236, now seen corresponding path program 1 times [2019-05-23 11:23:03,555 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:03,556 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:03,556 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:03,557 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:03,557 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:03,592 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:03,771 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:03,771 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:03,772 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:03,783 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:03,836 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:03,838 INFO L146 ILogger]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:03,843 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:04,011 INFO L146 ILogger]: Checked inductivity of 37 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-05-23 11:23:04,031 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:04,031 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-05-23 11:23:04,032 INFO L146 ILogger]: Interpolant automaton has 10 states [2019-05-23 11:23:04,032 INFO L146 ILogger]: Constructing interpolant automaton starting with 10 interpolants. [2019-05-23 11:23:04,032 INFO L146 ILogger]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-05-23 11:23:04,032 INFO L146 ILogger]: Start difference. First operand 132 states and 136 transitions. Second operand 10 states. [2019-05-23 11:23:04,559 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:04,559 INFO L146 ILogger]: Finished difference Result 263 states and 272 transitions. [2019-05-23 11:23:04,560 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-05-23 11:23:04,560 INFO L146 ILogger]: Start accepts. Automaton has 10 states. Word has length 131 [2019-05-23 11:23:04,561 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:04,562 INFO L146 ILogger]: With dead ends: 263 [2019-05-23 11:23:04,562 INFO L146 ILogger]: Without dead ends: 156 [2019-05-23 11:23:04,563 INFO L146 ILogger]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:04,564 INFO L146 ILogger]: Start minimizeSevpa. Operand 156 states. [2019-05-23 11:23:04,572 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 156 to 146. [2019-05-23 11:23:04,572 INFO L146 ILogger]: Start removeUnreachable. Operand 146 states. [2019-05-23 11:23:04,573 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 146 states to 146 states and 150 transitions. [2019-05-23 11:23:04,573 INFO L146 ILogger]: Start accepts. Automaton has 146 states and 150 transitions. Word has length 131 [2019-05-23 11:23:04,574 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:04,574 INFO L146 ILogger]: Abstraction has 146 states and 150 transitions. [2019-05-23 11:23:04,574 INFO L146 ILogger]: Interpolant automaton has 10 states. [2019-05-23 11:23:04,574 INFO L146 ILogger]: Start isEmpty. Operand 146 states and 150 transitions. [2019-05-23 11:23:04,576 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 146 [2019-05-23 11:23:04,577 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:04,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:04,577 INFO L146 ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:04,577 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:04,578 INFO L146 ILogger]: Analyzing trace with hash -1200733213, now seen corresponding path program 2 times [2019-05-23 11:23:04,578 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:04,578 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:04,579 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,579 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:04,579 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:04,615 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:04,872 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:04,872 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:04,872 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:04,880 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:04,943 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:04,943 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:04,944 INFO L146 ILogger]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:04,954 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:05,028 INFO L146 ILogger]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:05,047 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:05,047 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2019-05-23 11:23:05,048 INFO L146 ILogger]: Interpolant automaton has 11 states [2019-05-23 11:23:05,048 INFO L146 ILogger]: Constructing interpolant automaton starting with 11 interpolants. [2019-05-23 11:23:05,048 INFO L146 ILogger]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-05-23 11:23:05,048 INFO L146 ILogger]: Start difference. First operand 146 states and 150 transitions. Second operand 11 states. [2019-05-23 11:23:05,261 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:05,261 INFO L146 ILogger]: Finished difference Result 272 states and 280 transitions. [2019-05-23 11:23:05,261 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-05-23 11:23:05,262 INFO L146 ILogger]: Start accepts. Automaton has 11 states. Word has length 145 [2019-05-23 11:23:05,262 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:05,263 INFO L146 ILogger]: With dead ends: 272 [2019-05-23 11:23:05,263 INFO L146 ILogger]: Without dead ends: 158 [2019-05-23 11:23:05,264 INFO L146 ILogger]: 0 DeclaredPredicates, 159 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:05,265 INFO L146 ILogger]: Start minimizeSevpa. Operand 158 states. [2019-05-23 11:23:05,272 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 158 to 153. [2019-05-23 11:23:05,272 INFO L146 ILogger]: Start removeUnreachable. Operand 153 states. [2019-05-23 11:23:05,273 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2019-05-23 11:23:05,273 INFO L146 ILogger]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 145 [2019-05-23 11:23:05,274 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:05,274 INFO L146 ILogger]: Abstraction has 153 states and 157 transitions. [2019-05-23 11:23:05,274 INFO L146 ILogger]: Interpolant automaton has 11 states. [2019-05-23 11:23:05,274 INFO L146 ILogger]: Start isEmpty. Operand 153 states and 157 transitions. [2019-05-23 11:23:05,276 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 153 [2019-05-23 11:23:05,276 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:05,277 INFO L146 ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:05,277 INFO L146 ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:05,277 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:05,277 INFO L146 ILogger]: Analyzing trace with hash 104748121, now seen corresponding path program 3 times [2019-05-23 11:23:05,277 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:05,278 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:05,278 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:05,278 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:05,279 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:05,309 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,679 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-05-23 11:23:05,679 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:05,679 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:05,689 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:05,736 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-05-23 11:23:05,737 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:05,738 INFO L146 ILogger]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:05,743 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:05,842 INFO L146 ILogger]: Checked inductivity of 82 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-05-23 11:23:05,860 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:05,860 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2019-05-23 11:23:05,862 INFO L146 ILogger]: Interpolant automaton has 16 states [2019-05-23 11:23:05,862 INFO L146 ILogger]: Constructing interpolant automaton starting with 16 interpolants. [2019-05-23 11:23:05,863 INFO L146 ILogger]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2019-05-23 11:23:05,863 INFO L146 ILogger]: Start difference. First operand 153 states and 157 transitions. Second operand 16 states. [2019-05-23 11:23:06,456 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:06,457 INFO L146 ILogger]: Finished difference Result 315 states and 326 transitions. [2019-05-23 11:23:06,457 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-05-23 11:23:06,457 INFO L146 ILogger]: Start accepts. Automaton has 16 states. Word has length 152 [2019-05-23 11:23:06,458 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:06,460 INFO L146 ILogger]: With dead ends: 315 [2019-05-23 11:23:06,460 INFO L146 ILogger]: Without dead ends: 201 [2019-05-23 11:23:06,461 INFO L146 ILogger]: 0 DeclaredPredicates, 178 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2019-05-23 11:23:06,462 INFO L146 ILogger]: Start minimizeSevpa. Operand 201 states. [2019-05-23 11:23:06,469 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 201 to 181. [2019-05-23 11:23:06,469 INFO L146 ILogger]: Start removeUnreachable. Operand 181 states. [2019-05-23 11:23:06,470 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 181 states to 181 states and 185 transitions. [2019-05-23 11:23:06,470 INFO L146 ILogger]: Start accepts. Automaton has 181 states and 185 transitions. Word has length 152 [2019-05-23 11:23:06,470 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:06,471 INFO L146 ILogger]: Abstraction has 181 states and 185 transitions. [2019-05-23 11:23:06,471 INFO L146 ILogger]: Interpolant automaton has 16 states. [2019-05-23 11:23:06,471 INFO L146 ILogger]: Start isEmpty. Operand 181 states and 185 transitions. [2019-05-23 11:23:06,474 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 181 [2019-05-23 11:23:06,474 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:06,474 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:06,475 INFO L146 ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:06,475 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:06,475 INFO L146 ILogger]: Analyzing trace with hash -9292050, now seen corresponding path program 4 times [2019-05-23 11:23:06,475 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:06,476 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:06,476 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:06,476 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:06,477 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:06,522 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:06,677 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:06,677 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:06,678 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:06,686 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:06,724 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:06,724 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:06,725 INFO L146 ILogger]: Trace formula consists of 261 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:06,728 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:06,845 INFO L146 ILogger]: Checked inductivity of 156 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:06,864 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:06,864 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:06,864 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:06,865 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:06,865 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:06,865 INFO L146 ILogger]: Start difference. First operand 181 states and 185 transitions. Second operand 15 states. [2019-05-23 11:23:07,114 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:07,114 INFO L146 ILogger]: Finished difference Result 328 states and 336 transitions. [2019-05-23 11:23:07,115 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:07,115 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 180 [2019-05-23 11:23:07,115 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:07,116 INFO L146 ILogger]: With dead ends: 328 [2019-05-23 11:23:07,116 INFO L146 ILogger]: Without dead ends: 193 [2019-05-23 11:23:07,117 INFO L146 ILogger]: 0 DeclaredPredicates, 202 GetRequests, 179 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 11:23:07,117 INFO L146 ILogger]: Start minimizeSevpa. Operand 193 states. [2019-05-23 11:23:07,127 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 193 to 188. [2019-05-23 11:23:07,128 INFO L146 ILogger]: Start removeUnreachable. Operand 188 states. [2019-05-23 11:23:07,129 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 188 states to 188 states and 192 transitions. [2019-05-23 11:23:07,129 INFO L146 ILogger]: Start accepts. Automaton has 188 states and 192 transitions. Word has length 180 [2019-05-23 11:23:07,131 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:07,131 INFO L146 ILogger]: Abstraction has 188 states and 192 transitions. [2019-05-23 11:23:07,131 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:07,131 INFO L146 ILogger]: Start isEmpty. Operand 188 states and 192 transitions. [2019-05-23 11:23:07,135 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 188 [2019-05-23 11:23:07,135 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:07,135 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:07,136 INFO L146 ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:07,136 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:07,136 INFO L146 ILogger]: Analyzing trace with hash -397663560, now seen corresponding path program 5 times [2019-05-23 11:23:07,136 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:07,137 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:07,137 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:07,137 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:07,138 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:07,189 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:07,417 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-05-23 11:23:07,417 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:07,417 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:07,426 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:07,484 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-05-23 11:23:07,484 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:07,485 INFO L146 ILogger]: Trace formula consists of 302 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:07,488 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:07,721 INFO L146 ILogger]: Checked inductivity of 192 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-05-23 11:23:07,739 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:07,740 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-05-23 11:23:07,740 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:07,740 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:07,741 INFO L146 ILogger]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:07,741 INFO L146 ILogger]: Start difference. First operand 188 states and 192 transitions. Second operand 22 states. [2019-05-23 11:23:08,580 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:08,580 INFO L146 ILogger]: Finished difference Result 371 states and 382 transitions. [2019-05-23 11:23:08,581 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:08,581 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 187 [2019-05-23 11:23:08,581 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:08,582 INFO L146 ILogger]: With dead ends: 371 [2019-05-23 11:23:08,583 INFO L146 ILogger]: Without dead ends: 236 [2019-05-23 11:23:08,584 INFO L146 ILogger]: 0 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=1240, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:08,585 INFO L146 ILogger]: Start minimizeSevpa. Operand 236 states. [2019-05-23 11:23:08,593 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 236 to 216. [2019-05-23 11:23:08,593 INFO L146 ILogger]: Start removeUnreachable. Operand 216 states. [2019-05-23 11:23:08,594 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 216 states to 216 states and 220 transitions. [2019-05-23 11:23:08,594 INFO L146 ILogger]: Start accepts. Automaton has 216 states and 220 transitions. Word has length 187 [2019-05-23 11:23:08,595 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:08,595 INFO L146 ILogger]: Abstraction has 216 states and 220 transitions. [2019-05-23 11:23:08,595 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:08,595 INFO L146 ILogger]: Start isEmpty. Operand 216 states and 220 transitions. [2019-05-23 11:23:08,597 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 216 [2019-05-23 11:23:08,597 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:08,598 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:08,598 INFO L146 ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:08,598 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:08,598 INFO L146 ILogger]: Analyzing trace with hash 1152254147, now seen corresponding path program 6 times [2019-05-23 11:23:08,598 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:08,599 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:08,599 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:08,600 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:08,600 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:08,623 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:08,830 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2019-05-23 11:23:08,830 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:08,830 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:08,840 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:08,926 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-05-23 11:23:08,927 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:08,928 INFO L146 ILogger]: Trace formula consists of 249 conjuncts, 6 conjunts are in the unsatisfiable core [2019-05-23 11:23:08,931 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:09,137 INFO L146 ILogger]: Checked inductivity of 301 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2019-05-23 11:23:09,155 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:09,156 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-05-23 11:23:09,157 INFO L146 ILogger]: Interpolant automaton has 22 states [2019-05-23 11:23:09,158 INFO L146 ILogger]: Constructing interpolant automaton starting with 22 interpolants. [2019-05-23 11:23:09,158 INFO L146 ILogger]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2019-05-23 11:23:09,158 INFO L146 ILogger]: Start difference. First operand 216 states and 220 transitions. Second operand 22 states. [2019-05-23 11:23:09,903 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:09,903 INFO L146 ILogger]: Finished difference Result 396 states and 405 transitions. [2019-05-23 11:23:09,905 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-05-23 11:23:09,905 INFO L146 ILogger]: Start accepts. Automaton has 22 states. Word has length 215 [2019-05-23 11:23:09,905 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:09,907 INFO L146 ILogger]: With dead ends: 396 [2019-05-23 11:23:09,907 INFO L146 ILogger]: Without dead ends: 240 [2019-05-23 11:23:09,909 INFO L146 ILogger]: 0 DeclaredPredicates, 249 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=360, Invalid=1200, Unknown=0, NotChecked=0, Total=1560 [2019-05-23 11:23:09,909 INFO L146 ILogger]: Start minimizeSevpa. Operand 240 states. [2019-05-23 11:23:09,913 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 240 to 230. [2019-05-23 11:23:09,914 INFO L146 ILogger]: Start removeUnreachable. Operand 230 states. [2019-05-23 11:23:09,914 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 230 states to 230 states and 234 transitions. [2019-05-23 11:23:09,915 INFO L146 ILogger]: Start accepts. Automaton has 230 states and 234 transitions. Word has length 215 [2019-05-23 11:23:09,916 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:09,916 INFO L146 ILogger]: Abstraction has 230 states and 234 transitions. [2019-05-23 11:23:09,916 INFO L146 ILogger]: Interpolant automaton has 22 states. [2019-05-23 11:23:09,916 INFO L146 ILogger]: Start isEmpty. Operand 230 states and 234 transitions. [2019-05-23 11:23:09,917 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 230 [2019-05-23 11:23:09,917 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:09,917 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, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:09,918 INFO L146 ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:09,918 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:09,918 INFO L146 ILogger]: Analyzing trace with hash 1030812380, now seen corresponding path program 7 times [2019-05-23 11:23:09,918 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:09,918 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:09,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,919 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:09,919 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:09,956 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:10,238 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:10,238 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:10,238 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:10,247 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:10,301 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:10,303 INFO L146 ILogger]: Trace formula consists of 365 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:10,306 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:10,390 INFO L146 ILogger]: Checked inductivity of 366 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:10,422 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:10,422 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:10,423 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:10,423 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:10,424 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:10,425 INFO L146 ILogger]: Start difference. First operand 230 states and 234 transitions. Second operand 21 states. [2019-05-23 11:23:11,087 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:11,087 INFO L146 ILogger]: Finished difference Result 405 states and 413 transitions. [2019-05-23 11:23:11,095 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:11,095 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 229 [2019-05-23 11:23:11,095 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:11,096 INFO L146 ILogger]: With dead ends: 405 [2019-05-23 11:23:11,096 INFO L146 ILogger]: Without dead ends: 242 [2019-05-23 11:23:11,097 INFO L146 ILogger]: 0 DeclaredPredicates, 263 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:11,098 INFO L146 ILogger]: Start minimizeSevpa. Operand 242 states. [2019-05-23 11:23:11,102 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 242 to 237. [2019-05-23 11:23:11,102 INFO L146 ILogger]: Start removeUnreachable. Operand 237 states. [2019-05-23 11:23:11,103 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 237 states to 237 states and 241 transitions. [2019-05-23 11:23:11,103 INFO L146 ILogger]: Start accepts. Automaton has 237 states and 241 transitions. Word has length 229 [2019-05-23 11:23:11,103 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:11,103 INFO L146 ILogger]: Abstraction has 237 states and 241 transitions. [2019-05-23 11:23:11,103 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:11,103 INFO L146 ILogger]: Start isEmpty. Operand 237 states and 241 transitions. [2019-05-23 11:23:11,105 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 237 [2019-05-23 11:23:11,105 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:11,105 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, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:11,105 INFO L146 ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:11,106 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:11,106 INFO L146 ILogger]: Analyzing trace with hash -1860993966, now seen corresponding path program 8 times [2019-05-23 11:23:11,106 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:11,106 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:11,107 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:11,107 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:11,107 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:11,131 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:11,663 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:11,664 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:11,664 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:11,672 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:11,748 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:11,748 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:11,750 INFO L146 ILogger]: Trace formula consists of 375 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:11,754 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:11,856 INFO L146 ILogger]: Checked inductivity of 423 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2019-05-23 11:23:11,883 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:11,883 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:11,884 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:11,884 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:11,885 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:11,887 INFO L146 ILogger]: Start difference. First operand 237 states and 241 transitions. Second operand 23 states. [2019-05-23 11:23:12,227 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:12,227 INFO L146 ILogger]: Finished difference Result 407 states and 415 transitions. [2019-05-23 11:23:12,231 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:12,231 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 236 [2019-05-23 11:23:12,232 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:12,233 INFO L146 ILogger]: With dead ends: 407 [2019-05-23 11:23:12,233 INFO L146 ILogger]: Without dead ends: 244 [2019-05-23 11:23:12,234 INFO L146 ILogger]: 0 DeclaredPredicates, 274 GetRequests, 235 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 11:23:12,235 INFO L146 ILogger]: Start minimizeSevpa. Operand 244 states. [2019-05-23 11:23:12,238 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 244 to 244. [2019-05-23 11:23:12,239 INFO L146 ILogger]: Start removeUnreachable. Operand 244 states. [2019-05-23 11:23:12,239 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 244 states to 244 states and 248 transitions. [2019-05-23 11:23:12,240 INFO L146 ILogger]: Start accepts. Automaton has 244 states and 248 transitions. Word has length 236 [2019-05-23 11:23:12,240 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:12,240 INFO L146 ILogger]: Abstraction has 244 states and 248 transitions. [2019-05-23 11:23:12,240 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:12,240 INFO L146 ILogger]: Start isEmpty. Operand 244 states and 248 transitions. [2019-05-23 11:23:12,241 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 244 [2019-05-23 11:23:12,242 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:12,242 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, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:12,242 INFO L146 ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:12,242 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:12,242 INFO L146 ILogger]: Analyzing trace with hash -1509981668, now seen corresponding path program 9 times [2019-05-23 11:23:12,243 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:12,243 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:12,243 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:12,244 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:12,244 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:12,275 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:12,998 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2019-05-23 11:23:12,998 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:12,998 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:13,009 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:13,115 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-05-23 11:23:13,116 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:13,117 INFO L146 ILogger]: Trace formula consists of 282 conjuncts, 8 conjunts are in the unsatisfiable core [2019-05-23 11:23:13,119 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:13,252 INFO L146 ILogger]: Checked inductivity of 487 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-05-23 11:23:13,271 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:13,271 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2019-05-23 11:23:13,272 INFO L146 ILogger]: Interpolant automaton has 18 states [2019-05-23 11:23:13,272 INFO L146 ILogger]: Constructing interpolant automaton starting with 18 interpolants. [2019-05-23 11:23:13,272 INFO L146 ILogger]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-05-23 11:23:13,272 INFO L146 ILogger]: Start difference. First operand 244 states and 248 transitions. Second operand 18 states. [2019-05-23 11:23:15,883 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:15,883 INFO L146 ILogger]: Finished difference Result 418 states and 428 transitions. [2019-05-23 11:23:15,883 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-05-23 11:23:15,884 INFO L146 ILogger]: Start accepts. Automaton has 18 states. Word has length 243 [2019-05-23 11:23:15,884 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:15,886 INFO L146 ILogger]: With dead ends: 418 [2019-05-23 11:23:15,886 INFO L146 ILogger]: Without dead ends: 292 [2019-05-23 11:23:15,887 INFO L146 ILogger]: 0 DeclaredPredicates, 275 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2019-05-23 11:23:15,888 INFO L146 ILogger]: Start minimizeSevpa. Operand 292 states. [2019-05-23 11:23:15,895 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 292 to 272. [2019-05-23 11:23:15,896 INFO L146 ILogger]: Start removeUnreachable. Operand 272 states. [2019-05-23 11:23:15,897 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 272 states to 272 states and 276 transitions. [2019-05-23 11:23:15,897 INFO L146 ILogger]: Start accepts. Automaton has 272 states and 276 transitions. Word has length 243 [2019-05-23 11:23:15,897 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:15,897 INFO L146 ILogger]: Abstraction has 272 states and 276 transitions. [2019-05-23 11:23:15,897 INFO L146 ILogger]: Interpolant automaton has 18 states. [2019-05-23 11:23:15,897 INFO L146 ILogger]: Start isEmpty. Operand 272 states and 276 transitions. [2019-05-23 11:23:15,899 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 272 [2019-05-23 11:23:15,899 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:15,899 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, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:15,900 INFO L146 ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:15,900 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:15,900 INFO L146 ILogger]: Analyzing trace with hash -1657040904, now seen corresponding path program 10 times [2019-05-23 11:23:15,900 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:15,900 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:15,901 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:15,901 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:15,901 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:15,938 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:16,905 INFO L146 ILogger]: Checked inductivity of 596 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2019-05-23 11:23:16,906 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:16,906 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:16,915 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:16,969 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:16,969 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:16,970 INFO L146 ILogger]: Trace formula consists of 387 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:16,973 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:17,049 INFO L146 ILogger]: Checked inductivity of 596 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [2019-05-23 11:23:17,067 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:17,067 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:17,068 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:17,068 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:17,068 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:17,068 INFO L146 ILogger]: Start difference. First operand 272 states and 276 transitions. Second operand 15 states. [2019-05-23 11:23:17,375 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:17,375 INFO L146 ILogger]: Finished difference Result 455 states and 464 transitions. [2019-05-23 11:23:17,375 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:17,376 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 271 [2019-05-23 11:23:17,376 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:17,378 INFO L146 ILogger]: With dead ends: 455 [2019-05-23 11:23:17,378 INFO L146 ILogger]: Without dead ends: 308 [2019-05-23 11:23:17,379 INFO L146 ILogger]: 0 DeclaredPredicates, 293 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:17,380 INFO L146 ILogger]: Start minimizeSevpa. Operand 308 states. [2019-05-23 11:23:17,384 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 308 to 293. [2019-05-23 11:23:17,384 INFO L146 ILogger]: Start removeUnreachable. Operand 293 states. [2019-05-23 11:23:17,385 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 293 states to 293 states and 297 transitions. [2019-05-23 11:23:17,385 INFO L146 ILogger]: Start accepts. Automaton has 293 states and 297 transitions. Word has length 271 [2019-05-23 11:23:17,386 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:17,386 INFO L146 ILogger]: Abstraction has 293 states and 297 transitions. [2019-05-23 11:23:17,386 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:17,386 INFO L146 ILogger]: Start isEmpty. Operand 293 states and 297 transitions. [2019-05-23 11:23:17,387 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 293 [2019-05-23 11:23:17,387 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:17,388 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, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:17,388 INFO L146 ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:17,388 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:17,388 INFO L146 ILogger]: Analyzing trace with hash -50434311, now seen corresponding path program 11 times [2019-05-23 11:23:17,388 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:17,389 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:17,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:17,389 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:17,389 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:17,415 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:17,984 INFO L146 ILogger]: Checked inductivity of 704 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2019-05-23 11:23:17,984 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:17,984 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:17,993 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:18,301 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:23:18,301 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:18,304 INFO L146 ILogger]: Trace formula consists of 461 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:23:18,308 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:18,459 INFO L146 ILogger]: Checked inductivity of 704 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2019-05-23 11:23:18,477 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:18,477 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:23:18,478 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:23:18,478 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:23:18,478 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:18,479 INFO L146 ILogger]: Start difference. First operand 293 states and 297 transitions. Second operand 17 states. [2019-05-23 11:23:18,849 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:18,849 INFO L146 ILogger]: Finished difference Result 490 states and 499 transitions. [2019-05-23 11:23:18,850 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:23:18,850 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 292 [2019-05-23 11:23:18,850 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:18,853 INFO L146 ILogger]: With dead ends: 490 [2019-05-23 11:23:18,853 INFO L146 ILogger]: Without dead ends: 329 [2019-05-23 11:23:18,854 INFO L146 ILogger]: 0 DeclaredPredicates, 330 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:23:18,854 INFO L146 ILogger]: Start minimizeSevpa. Operand 329 states. [2019-05-23 11:23:18,859 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 329 to 314. [2019-05-23 11:23:18,859 INFO L146 ILogger]: Start removeUnreachable. Operand 314 states. [2019-05-23 11:23:18,860 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2019-05-23 11:23:18,860 INFO L146 ILogger]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 292 [2019-05-23 11:23:18,860 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:18,860 INFO L146 ILogger]: Abstraction has 314 states and 318 transitions. [2019-05-23 11:23:18,860 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:23:18,860 INFO L146 ILogger]: Start isEmpty. Operand 314 states and 318 transitions. [2019-05-23 11:23:18,861 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 314 [2019-05-23 11:23:18,861 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:18,862 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, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:18,862 INFO L146 ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:18,862 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:18,862 INFO L146 ILogger]: Analyzing trace with hash 229895832, now seen corresponding path program 12 times [2019-05-23 11:23:18,862 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:18,862 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:18,863 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:18,863 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:18,863 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:18,887 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:19,931 INFO L146 ILogger]: Checked inductivity of 833 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2019-05-23 11:23:19,931 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:19,931 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:19,940 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:20,236 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2019-05-23 11:23:20,237 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:20,239 INFO L146 ILogger]: Trace formula consists of 408 conjuncts, 10 conjunts are in the unsatisfiable core [2019-05-23 11:23:20,243 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:20,462 INFO L146 ILogger]: Checked inductivity of 833 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2019-05-23 11:23:20,481 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:20,481 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2019-05-23 11:23:20,482 INFO L146 ILogger]: Interpolant automaton has 26 states [2019-05-23 11:23:20,482 INFO L146 ILogger]: Constructing interpolant automaton starting with 26 interpolants. [2019-05-23 11:23:20,483 INFO L146 ILogger]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2019-05-23 11:23:20,483 INFO L146 ILogger]: Start difference. First operand 314 states and 318 transitions. Second operand 26 states. [2019-05-23 11:23:21,389 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:21,390 INFO L146 ILogger]: Finished difference Result 537 states and 547 transitions. [2019-05-23 11:23:21,390 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-05-23 11:23:21,390 INFO L146 ILogger]: Start accepts. Automaton has 26 states. Word has length 313 [2019-05-23 11:23:21,391 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:21,393 INFO L146 ILogger]: With dead ends: 537 [2019-05-23 11:23:21,393 INFO L146 ILogger]: Without dead ends: 362 [2019-05-23 11:23:21,395 INFO L146 ILogger]: 0 DeclaredPredicates, 365 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=440, Invalid=1816, Unknown=0, NotChecked=0, Total=2256 [2019-05-23 11:23:21,395 INFO L146 ILogger]: Start minimizeSevpa. Operand 362 states. [2019-05-23 11:23:21,400 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 362 to 342. [2019-05-23 11:23:21,400 INFO L146 ILogger]: Start removeUnreachable. Operand 342 states. [2019-05-23 11:23:21,401 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 342 states to 342 states and 346 transitions. [2019-05-23 11:23:21,401 INFO L146 ILogger]: Start accepts. Automaton has 342 states and 346 transitions. Word has length 313 [2019-05-23 11:23:21,402 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:21,402 INFO L146 ILogger]: Abstraction has 342 states and 346 transitions. [2019-05-23 11:23:21,402 INFO L146 ILogger]: Interpolant automaton has 26 states. [2019-05-23 11:23:21,402 INFO L146 ILogger]: Start isEmpty. Operand 342 states and 346 transitions. [2019-05-23 11:23:21,404 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 342 [2019-05-23 11:23:21,404 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:21,404 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, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:21,405 INFO L146 ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:21,405 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:21,405 INFO L146 ILogger]: Analyzing trace with hash -1319856836, now seen corresponding path program 13 times [2019-05-23 11:23:21,405 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:21,405 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:21,406 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:21,406 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:21,406 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:21,432 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:21,731 INFO L146 ILogger]: Checked inductivity of 1012 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2019-05-23 11:23:21,732 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:21,732 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:21,740 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:21,815 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:21,816 INFO L146 ILogger]: Trace formula consists of 537 conjuncts, 18 conjunts are in the unsatisfiable core [2019-05-23 11:23:21,820 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:22,305 INFO L146 ILogger]: Checked inductivity of 1012 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2019-05-23 11:23:22,358 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:22,358 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:22,359 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:22,359 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:22,360 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:22,360 INFO L146 ILogger]: Start difference. First operand 342 states and 346 transitions. Second operand 21 states. [2019-05-23 11:23:23,264 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:23,264 INFO L146 ILogger]: Finished difference Result 574 states and 583 transitions. [2019-05-23 11:23:23,264 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:23,265 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 341 [2019-05-23 11:23:23,265 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:23,268 INFO L146 ILogger]: With dead ends: 574 [2019-05-23 11:23:23,268 INFO L146 ILogger]: Without dead ends: 378 [2019-05-23 11:23:23,269 INFO L146 ILogger]: 0 DeclaredPredicates, 375 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:23,270 INFO L146 ILogger]: Start minimizeSevpa. Operand 378 states. [2019-05-23 11:23:23,276 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 378 to 363. [2019-05-23 11:23:23,276 INFO L146 ILogger]: Start removeUnreachable. Operand 363 states. [2019-05-23 11:23:23,277 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 363 states to 363 states and 367 transitions. [2019-05-23 11:23:23,277 INFO L146 ILogger]: Start accepts. Automaton has 363 states and 367 transitions. Word has length 341 [2019-05-23 11:23:23,277 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:23,277 INFO L146 ILogger]: Abstraction has 363 states and 367 transitions. [2019-05-23 11:23:23,277 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:23,278 INFO L146 ILogger]: Start isEmpty. Operand 363 states and 367 transitions. [2019-05-23 11:23:23,279 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 363 [2019-05-23 11:23:23,279 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:23,280 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, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:23,280 INFO L146 ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:23,280 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:23,281 INFO L146 ILogger]: Analyzing trace with hash 1775657871, now seen corresponding path program 14 times [2019-05-23 11:23:23,281 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:23,281 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:23,282 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:23,282 INFO L146 ILogger]: Keeping assertion order NOT_INCREMENTALLY [2019-05-23 11:23:23,282 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:23,311 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:23,917 INFO L146 ILogger]: Checked inductivity of 1183 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2019-05-23 11:23:23,918 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:23,918 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:23,927 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-05-23 11:23:24,009 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-05-23 11:23:24,009 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:24,010 INFO L146 ILogger]: Trace formula consists of 570 conjuncts, 20 conjunts are in the unsatisfiable core [2019-05-23 11:23:24,014 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:24,191 INFO L146 ILogger]: Checked inductivity of 1183 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2019-05-23 11:23:24,210 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:24,210 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2019-05-23 11:23:24,210 INFO L146 ILogger]: Interpolant automaton has 23 states [2019-05-23 11:23:24,211 INFO L146 ILogger]: Constructing interpolant automaton starting with 23 interpolants. [2019-05-23 11:23:24,211 INFO L146 ILogger]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2019-05-23 11:23:24,211 INFO L146 ILogger]: Start difference. First operand 363 states and 367 transitions. Second operand 23 states. [2019-05-23 11:23:25,045 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:25,046 INFO L146 ILogger]: Finished difference Result 594 states and 603 transitions. [2019-05-23 11:23:25,046 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-05-23 11:23:25,046 INFO L146 ILogger]: Start accepts. Automaton has 23 states. Word has length 362 [2019-05-23 11:23:25,047 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:25,049 INFO L146 ILogger]: With dead ends: 594 [2019-05-23 11:23:25,049 INFO L146 ILogger]: Without dead ends: 384 [2019-05-23 11:23:25,051 INFO L146 ILogger]: 0 DeclaredPredicates, 400 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2019-05-23 11:23:25,051 INFO L146 ILogger]: Start minimizeSevpa. Operand 384 states. [2019-05-23 11:23:25,056 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 384 to 384. [2019-05-23 11:23:25,056 INFO L146 ILogger]: Start removeUnreachable. Operand 384 states. [2019-05-23 11:23:25,057 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 384 states to 384 states and 388 transitions. [2019-05-23 11:23:25,057 INFO L146 ILogger]: Start accepts. Automaton has 384 states and 388 transitions. Word has length 362 [2019-05-23 11:23:25,057 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:25,058 INFO L146 ILogger]: Abstraction has 384 states and 388 transitions. [2019-05-23 11:23:25,058 INFO L146 ILogger]: Interpolant automaton has 23 states. [2019-05-23 11:23:25,058 INFO L146 ILogger]: Start isEmpty. Operand 384 states and 388 transitions. [2019-05-23 11:23:25,060 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 384 [2019-05-23 11:23:25,060 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:25,060 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, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:25,060 INFO L146 ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:25,061 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:25,061 INFO L146 ILogger]: Analyzing trace with hash -1245508068, now seen corresponding path program 15 times [2019-05-23 11:23:25,061 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:25,061 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:25,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,062 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:25,062 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,094 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:25,336 INFO L146 ILogger]: Checked inductivity of 1375 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:25,336 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:25,337 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:25,344 INFO L146 ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-05-23 11:23:25,469 INFO L146 ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-05-23 11:23:25,469 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:25,470 INFO L146 ILogger]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2019-05-23 11:23:25,473 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:25,573 INFO L146 ILogger]: Checked inductivity of 1375 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:25,592 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:25,593 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2019-05-23 11:23:25,593 INFO L146 ILogger]: Interpolant automaton has 15 states [2019-05-23 11:23:25,593 INFO L146 ILogger]: Constructing interpolant automaton starting with 15 interpolants. [2019-05-23 11:23:25,594 INFO L146 ILogger]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-05-23 11:23:25,594 INFO L146 ILogger]: Start difference. First operand 384 states and 388 transitions. Second operand 15 states. [2019-05-23 11:23:25,761 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:25,761 INFO L146 ILogger]: Finished difference Result 484 states and 489 transitions. [2019-05-23 11:23:25,763 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-05-23 11:23:25,763 INFO L146 ILogger]: Start accepts. Automaton has 15 states. Word has length 383 [2019-05-23 11:23:25,764 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:25,766 INFO L146 ILogger]: With dead ends: 484 [2019-05-23 11:23:25,767 INFO L146 ILogger]: Without dead ends: 396 [2019-05-23 11:23:25,767 INFO L146 ILogger]: 0 DeclaredPredicates, 405 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2019-05-23 11:23:25,768 INFO L146 ILogger]: Start minimizeSevpa. Operand 396 states. [2019-05-23 11:23:25,773 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 396 to 391. [2019-05-23 11:23:25,774 INFO L146 ILogger]: Start removeUnreachable. Operand 391 states. [2019-05-23 11:23:25,774 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 391 states to 391 states and 395 transitions. [2019-05-23 11:23:25,775 INFO L146 ILogger]: Start accepts. Automaton has 391 states and 395 transitions. Word has length 383 [2019-05-23 11:23:25,775 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:25,775 INFO L146 ILogger]: Abstraction has 391 states and 395 transitions. [2019-05-23 11:23:25,775 INFO L146 ILogger]: Interpolant automaton has 15 states. [2019-05-23 11:23:25,775 INFO L146 ILogger]: Start isEmpty. Operand 391 states and 395 transitions. [2019-05-23 11:23:25,777 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 391 [2019-05-23 11:23:25,777 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:25,778 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, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:25,778 INFO L146 ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:25,778 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:25,779 INFO L146 ILogger]: Analyzing trace with hash 172754777, now seen corresponding path program 16 times [2019-05-23 11:23:25,779 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:25,779 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:25,779 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,780 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:25,782 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:25,816 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,115 INFO L146 ILogger]: Checked inductivity of 1411 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:26,116 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:26,116 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:26,124 INFO L146 ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2019-05-23 11:23:26,203 INFO L146 ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-05-23 11:23:26,203 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:26,205 INFO L146 ILogger]: Trace formula consists of 572 conjuncts, 14 conjunts are in the unsatisfiable core [2019-05-23 11:23:26,208 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:26,285 INFO L146 ILogger]: Checked inductivity of 1411 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:26,311 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:26,312 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2019-05-23 11:23:26,312 INFO L146 ILogger]: Interpolant automaton has 17 states [2019-05-23 11:23:26,312 INFO L146 ILogger]: Constructing interpolant automaton starting with 17 interpolants. [2019-05-23 11:23:26,313 INFO L146 ILogger]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2019-05-23 11:23:26,313 INFO L146 ILogger]: Start difference. First operand 391 states and 395 transitions. Second operand 17 states. [2019-05-23 11:23:26,516 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:26,517 INFO L146 ILogger]: Finished difference Result 491 states and 496 transitions. [2019-05-23 11:23:26,517 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-05-23 11:23:26,517 INFO L146 ILogger]: Start accepts. Automaton has 17 states. Word has length 390 [2019-05-23 11:23:26,518 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:26,520 INFO L146 ILogger]: With dead ends: 491 [2019-05-23 11:23:26,520 INFO L146 ILogger]: Without dead ends: 403 [2019-05-23 11:23:26,521 INFO L146 ILogger]: 0 DeclaredPredicates, 416 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2019-05-23 11:23:26,521 INFO L146 ILogger]: Start minimizeSevpa. Operand 403 states. [2019-05-23 11:23:26,526 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 403 to 398. [2019-05-23 11:23:26,526 INFO L146 ILogger]: Start removeUnreachable. Operand 398 states. [2019-05-23 11:23:26,527 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 398 states to 398 states and 402 transitions. [2019-05-23 11:23:26,527 INFO L146 ILogger]: Start accepts. Automaton has 398 states and 402 transitions. Word has length 390 [2019-05-23 11:23:26,528 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:26,528 INFO L146 ILogger]: Abstraction has 398 states and 402 transitions. [2019-05-23 11:23:26,528 INFO L146 ILogger]: Interpolant automaton has 17 states. [2019-05-23 11:23:26,528 INFO L146 ILogger]: Start isEmpty. Operand 398 states and 402 transitions. [2019-05-23 11:23:26,530 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 398 [2019-05-23 11:23:26,530 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:26,531 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, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:26,531 INFO L146 ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:26,531 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:26,531 INFO L146 ILogger]: Analyzing trace with hash -770662532, now seen corresponding path program 17 times [2019-05-23 11:23:26,531 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:26,532 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:26,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:26,532 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:26,532 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:26,566 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:27,619 INFO L146 ILogger]: Checked inductivity of 1454 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:27,619 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:27,619 INFO L146 ILogger]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-05-23 11:23:27,629 INFO L146 ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-05-23 11:23:28,437 INFO L146 ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2019-05-23 11:23:28,438 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:28,441 INFO L146 ILogger]: Trace formula consists of 623 conjuncts, 16 conjunts are in the unsatisfiable core [2019-05-23 11:23:28,444 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:28,587 INFO L146 ILogger]: Checked inductivity of 1454 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:28,606 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:28,606 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2019-05-23 11:23:28,607 INFO L146 ILogger]: Interpolant automaton has 19 states [2019-05-23 11:23:28,607 INFO L146 ILogger]: Constructing interpolant automaton starting with 19 interpolants. [2019-05-23 11:23:28,607 INFO L146 ILogger]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2019-05-23 11:23:28,607 INFO L146 ILogger]: Start difference. First operand 398 states and 402 transitions. Second operand 19 states. [2019-05-23 11:23:29,027 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:29,028 INFO L146 ILogger]: Finished difference Result 498 states and 503 transitions. [2019-05-23 11:23:29,030 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-05-23 11:23:29,030 INFO L146 ILogger]: Start accepts. Automaton has 19 states. Word has length 397 [2019-05-23 11:23:29,031 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:29,032 INFO L146 ILogger]: With dead ends: 498 [2019-05-23 11:23:29,032 INFO L146 ILogger]: Without dead ends: 410 [2019-05-23 11:23:29,033 INFO L146 ILogger]: 0 DeclaredPredicates, 427 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2019-05-23 11:23:29,034 INFO L146 ILogger]: Start minimizeSevpa. Operand 410 states. [2019-05-23 11:23:29,039 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 410 to 405. [2019-05-23 11:23:29,039 INFO L146 ILogger]: Start removeUnreachable. Operand 405 states. [2019-05-23 11:23:29,040 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 405 states to 405 states and 409 transitions. [2019-05-23 11:23:29,040 INFO L146 ILogger]: Start accepts. Automaton has 405 states and 409 transitions. Word has length 397 [2019-05-23 11:23:29,040 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:29,040 INFO L146 ILogger]: Abstraction has 405 states and 409 transitions. [2019-05-23 11:23:29,040 INFO L146 ILogger]: Interpolant automaton has 19 states. [2019-05-23 11:23:29,041 INFO L146 ILogger]: Start isEmpty. Operand 405 states and 409 transitions. [2019-05-23 11:23:29,043 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 405 [2019-05-23 11:23:29,043 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:29,043 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, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:29,043 INFO L146 ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:29,044 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:29,044 INFO L146 ILogger]: Analyzing trace with hash 1815751161, now seen corresponding path program 18 times [2019-05-23 11:23:29,044 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:29,044 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:29,045 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:29,045 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:29,045 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:29,087 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:29,376 INFO L146 ILogger]: Checked inductivity of 1504 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:29,377 INFO L146 ILogger]: The current sequences of interpolants are not accepted, trying to find more. [2019-05-23 11:23:29,377 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 11:23:29,387 INFO L146 ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE [2019-05-23 11:23:30,823 INFO L146 ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-05-23 11:23:30,824 INFO L146 ILogger]: Conjunction of SSA is unsat [2019-05-23 11:23:30,828 INFO L146 ILogger]: Trace formula consists of 633 conjuncts, 30 conjunts are in the unsatisfiable core [2019-05-23 11:23:30,831 INFO L146 ILogger]: Computing forward predicates... [2019-05-23 11:23:30,954 INFO L146 ILogger]: Checked inductivity of 1504 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2019-05-23 11:23:30,973 INFO L146 ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-05-23 11:23:30,974 INFO L146 ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2019-05-23 11:23:30,974 INFO L146 ILogger]: Interpolant automaton has 21 states [2019-05-23 11:23:30,974 INFO L146 ILogger]: Constructing interpolant automaton starting with 21 interpolants. [2019-05-23 11:23:30,974 INFO L146 ILogger]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2019-05-23 11:23:30,975 INFO L146 ILogger]: Start difference. First operand 405 states and 409 transitions. Second operand 21 states. [2019-05-23 11:23:31,261 INFO L146 ILogger]: Subtrahend was deterministic. Have not used determinization. [2019-05-23 11:23:31,261 INFO L146 ILogger]: Finished difference Result 500 states and 505 transitions. [2019-05-23 11:23:31,261 INFO L146 ILogger]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-05-23 11:23:31,262 INFO L146 ILogger]: Start accepts. Automaton has 21 states. Word has length 404 [2019-05-23 11:23:31,262 INFO L146 ILogger]: Finished accepts. some prefix is accepted. [2019-05-23 11:23:31,264 INFO L146 ILogger]: With dead ends: 500 [2019-05-23 11:23:31,264 INFO L146 ILogger]: Without dead ends: 412 [2019-05-23 11:23:31,265 INFO L146 ILogger]: 0 DeclaredPredicates, 438 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2019-05-23 11:23:31,266 INFO L146 ILogger]: Start minimizeSevpa. Operand 412 states. [2019-05-23 11:23:31,270 INFO L146 ILogger]: Finished minimizeSevpa. Reduced states from 412 to 412. [2019-05-23 11:23:31,271 INFO L146 ILogger]: Start removeUnreachable. Operand 412 states. [2019-05-23 11:23:31,271 INFO L146 ILogger]: Finished removeUnreachable. Reduced from 412 states to 412 states and 416 transitions. [2019-05-23 11:23:31,272 INFO L146 ILogger]: Start accepts. Automaton has 412 states and 416 transitions. Word has length 404 [2019-05-23 11:23:31,272 INFO L146 ILogger]: Finished accepts. word is rejected. [2019-05-23 11:23:31,272 INFO L146 ILogger]: Abstraction has 412 states and 416 transitions. [2019-05-23 11:23:31,272 INFO L146 ILogger]: Interpolant automaton has 21 states. [2019-05-23 11:23:31,272 INFO L146 ILogger]: Start isEmpty. Operand 412 states and 416 transitions. [2019-05-23 11:23:31,274 INFO L146 ILogger]: Finished isEmpty. Found accepting run of length 412 [2019-05-23 11:23:31,274 INFO L146 ILogger]: Found error trace [2019-05-23 11:23:31,275 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, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-05-23 11:23:31,275 INFO L146 ILogger]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-05-23 11:23:31,275 INFO L146 ILogger]: Initialized classic predicate unifier [2019-05-23 11:23:31,275 INFO L146 ILogger]: Analyzing trace with hash -585873188, now seen corresponding path program 19 times [2019-05-23 11:23:31,276 INFO L146 ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-05-23 11:23:31,276 INFO L146 ILogger]: Using refinement strategy CamelRefinementStrategy [2019-05-23 11:23:31,276 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:31,276 INFO L146 ILogger]: Changing assertion order to NOT_INCREMENTALLY [2019-05-23 11:23:31,277 INFO L146 ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-05-23 11:23:32,846 INFO L146 ILogger]: Conjunction of SSA is unsat