java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:06:38,086 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:06:38,088 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:06:38,106 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 20:06:38,106 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 20:06:38,109 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 20:06:38,111 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 20:06:38,114 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 20:06:38,116 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 20:06:38,117 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 20:06:38,118 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-30 20:06:38,118 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-30 20:06:38,119 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-30 20:06:38,122 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-30 20:06:38,123 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-30 20:06:38,124 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-30 20:06:38,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-30 20:06:38,133 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-30 20:06:38,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-30 20:06:38,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-30 20:06:38,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-30 20:06:38,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-30 20:06:38,150 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-30 20:06:38,151 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-30 20:06:38,151 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-30 20:06:38,152 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-30 20:06:38,153 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-30 20:06:38,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-30 20:06:38,157 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-30 20:06:38,158 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-30 20:06:38,160 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-30 20:06:38,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-30 20:06:38,162 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-30 20:06:38,162 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-30 20:06:38,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-30 20:06:38,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-30 20:06:38,164 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-30 20:06:38,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:06:38,195 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:06:38,196 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:06:38,196 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:06:38,200 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:06:38,200 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:06:38,200 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:06:38,200 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:06:38,201 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:06:38,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:06:38,201 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:06:38,201 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:06:38,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:06:38,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:06:38,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:06:38,203 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:06:38,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:06:38,204 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:06:38,205 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:06:38,205 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:06:38,205 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:06:38,205 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:06:38,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:06:38,206 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:06:38,206 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:06:38,206 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:06:38,206 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:06:38,207 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:06:38,207 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:06:38,207 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:06:38,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:06:38,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:06:38,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:06:38,277 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:06:38,278 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:06:38,278 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl [2018-09-30 20:06:38,279 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl' [2018-09-30 20:06:38,331 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:06:38,334 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:06:38,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:06:38,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:06:38,335 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:06:38,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,372 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 20:06:38,373 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 20:06:38,373 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 20:06:38,375 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:06:38,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:06:38,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:06:38,376 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:06:38,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/1) ... [2018-09-30 20:06:38,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:06:38,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:06:38,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:06:38,399 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:06:38,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (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:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:06:38,470 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-09-30 20:06:38,471 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-09-30 20:06:38,471 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-09-30 20:06:38,841 INFO L345 CfgBuilder]: Using library mode [2018-09-30 20:06:38,842 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:06:38 BoogieIcfgContainer [2018-09-30 20:06:38,842 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:06:38,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:06:38,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:06:38,848 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:06:38,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:06:38" (1/2) ... [2018-09-30 20:06:38,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1baa6d0b and model type threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:06:38, skipping insertion in model container [2018-09-30 20:06:38,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:06:38" (2/2) ... [2018-09-30 20:06:38,852 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithoutIf.bpl [2018-09-30 20:06:38,863 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:06:38,873 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-09-30 20:06:38,923 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:06:38,924 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:06:38,924 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:06:38,924 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:06:38,924 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:06:38,924 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:06:38,925 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:06:38,925 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:06:38,925 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:06:38,941 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-09-30 20:06:38,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 20:06:38,948 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:38,949 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 20:06:38,950 INFO L423 AbstractCegarLoop]: === Iteration 1 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:38,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:38,955 INFO L82 PathProgramCache]: Analyzing trace with hash 927686, now seen corresponding path program 1 times [2018-09-30 20:06:38,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:38,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:39,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:39,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:39,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:39,161 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:06:39,161 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-30 20:06:39,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 20:06:39,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 20:06:39,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-30 20:06:39,179 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-09-30 20:06:39,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:39,683 INFO L93 Difference]: Finished difference Result 32 states and 51 transitions. [2018-09-30 20:06:39,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 20:06:39,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-09-30 20:06:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:39,698 INFO L225 Difference]: With dead ends: 32 [2018-09-30 20:06:39,698 INFO L226 Difference]: Without dead ends: 30 [2018-09-30 20:06:39,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-30 20:06:39,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-09-30 20:06:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-09-30 20:06:39,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-09-30 20:06:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2018-09-30 20:06:39,745 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 37 transitions. Word has length 4 [2018-09-30 20:06:39,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:39,745 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 37 transitions. [2018-09-30 20:06:39,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 20:06:39,746 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2018-09-30 20:06:39,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 20:06:39,747 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:39,747 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 20:06:39,747 INFO L423 AbstractCegarLoop]: === Iteration 2 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:39,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:39,748 INFO L82 PathProgramCache]: Analyzing trace with hash 930088, now seen corresponding path program 1 times [2018-09-30 20:06:39,749 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:39,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:39,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:39,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:39,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:39,817 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:06:39,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-30 20:06:39,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 20:06:39,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 20:06:39,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-30 20:06:39,820 INFO L87 Difference]: Start difference. First operand 24 states and 37 transitions. Second operand 5 states. [2018-09-30 20:06:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:40,159 INFO L93 Difference]: Finished difference Result 38 states and 61 transitions. [2018-09-30 20:06:40,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 20:06:40,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-09-30 20:06:40,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:40,160 INFO L225 Difference]: With dead ends: 38 [2018-09-30 20:06:40,161 INFO L226 Difference]: Without dead ends: 36 [2018-09-30 20:06:40,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-30 20:06:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-09-30 20:06:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2018-09-30 20:06:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-30 20:06:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2018-09-30 20:06:40,170 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 4 [2018-09-30 20:06:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:40,171 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 47 transitions. [2018-09-30 20:06:40,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 20:06:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2018-09-30 20:06:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 20:06:40,172 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:40,172 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-30 20:06:40,172 INFO L423 AbstractCegarLoop]: === Iteration 3 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:40,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:40,173 INFO L82 PathProgramCache]: Analyzing trace with hash 28768015, now seen corresponding path program 1 times [2018-09-30 20:06:40,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:40,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:40,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:40,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:40,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:40,272 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:06:40,272 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 20:06:40,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 20:06:40,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 20:06:40,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-30 20:06:40,274 INFO L87 Difference]: Start difference. First operand 30 states and 47 transitions. Second operand 6 states. [2018-09-30 20:06:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:40,975 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2018-09-30 20:06:40,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:06:40,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-30 20:06:40,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:40,977 INFO L225 Difference]: With dead ends: 43 [2018-09-30 20:06:40,977 INFO L226 Difference]: Without dead ends: 41 [2018-09-30 20:06:40,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-09-30 20:06:40,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-09-30 20:06:40,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-09-30 20:06:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-09-30 20:06:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2018-09-30 20:06:40,996 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 5 [2018-09-30 20:06:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:40,997 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2018-09-30 20:06:40,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 20:06:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2018-09-30 20:06:40,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-30 20:06:40,998 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:40,998 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-30 20:06:40,999 INFO L423 AbstractCegarLoop]: === Iteration 4 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:40,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:41,000 INFO L82 PathProgramCache]: Analyzing trace with hash 28831153, now seen corresponding path program 1 times [2018-09-30 20:06:41,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:41,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:41,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:41,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:41,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:41,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:41,081 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:06:41,081 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 20:06:41,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 20:06:41,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 20:06:41,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-30 20:06:41,082 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand 6 states. [2018-09-30 20:06:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:41,381 INFO L93 Difference]: Finished difference Result 54 states and 89 transitions. [2018-09-30 20:06:41,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:06:41,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-30 20:06:41,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:41,386 INFO L225 Difference]: With dead ends: 54 [2018-09-30 20:06:41,386 INFO L226 Difference]: Without dead ends: 52 [2018-09-30 20:06:41,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:06:41,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-30 20:06:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2018-09-30 20:06:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 20:06:41,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 70 transitions. [2018-09-30 20:06:41,399 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 70 transitions. Word has length 5 [2018-09-30 20:06:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:41,399 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 70 transitions. [2018-09-30 20:06:41,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 20:06:41,400 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 70 transitions. [2018-09-30 20:06:41,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:41,400 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:41,401 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:41,401 INFO L423 AbstractCegarLoop]: === Iteration 5 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:41,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:41,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1974033510, now seen corresponding path program 1 times [2018-09-30 20:06:41,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:41,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:41,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:41,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:41,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:41,570 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:41,570 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:41,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:41,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:41,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:41,835 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:41,835 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-30 20:06:41,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:06:41,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:06:41,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2018-09-30 20:06:41,836 INFO L87 Difference]: Start difference. First operand 43 states and 70 transitions. Second operand 14 states. [2018-09-30 20:06:43,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:43,320 INFO L93 Difference]: Finished difference Result 107 states and 168 transitions. [2018-09-30 20:06:43,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 20:06:43,321 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 8 [2018-09-30 20:06:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:43,323 INFO L225 Difference]: With dead ends: 107 [2018-09-30 20:06:43,323 INFO L226 Difference]: Without dead ends: 106 [2018-09-30 20:06:43,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2018-09-30 20:06:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-09-30 20:06:43,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 64. [2018-09-30 20:06:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-30 20:06:43,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 109 transitions. [2018-09-30 20:06:43,340 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 109 transitions. Word has length 8 [2018-09-30 20:06:43,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:43,341 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 109 transitions. [2018-09-30 20:06:43,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:06:43,341 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 109 transitions. [2018-09-30 20:06:43,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:43,342 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:43,342 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:43,343 INFO L423 AbstractCegarLoop]: === Iteration 6 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:43,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:43,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1974032228, now seen corresponding path program 1 times [2018-09-30 20:06:43,343 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:43,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:43,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:43,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:43,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:43,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:43,465 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:06:43,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-30 20:06:43,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:06:43,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:06:43,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-09-30 20:06:43,467 INFO L87 Difference]: Start difference. First operand 64 states and 109 transitions. Second operand 8 states. [2018-09-30 20:06:43,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:43,834 INFO L93 Difference]: Finished difference Result 95 states and 152 transitions. [2018-09-30 20:06:43,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:06:43,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-09-30 20:06:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:43,837 INFO L225 Difference]: With dead ends: 95 [2018-09-30 20:06:43,838 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 20:06:43,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:06:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 20:06:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-09-30 20:06:43,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 20:06:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 134 transitions. [2018-09-30 20:06:43,860 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 134 transitions. Word has length 8 [2018-09-30 20:06:43,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:43,861 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 134 transitions. [2018-09-30 20:06:43,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:06:43,861 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 134 transitions. [2018-09-30 20:06:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:43,862 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:43,862 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:43,863 INFO L423 AbstractCegarLoop]: === Iteration 7 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:43,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:43,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1965445341, now seen corresponding path program 1 times [2018-09-30 20:06:43,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:43,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:43,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:43,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:43,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:43,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:43,937 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:43,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:43,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:44,158 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:44,158 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 12 [2018-09-30 20:06:44,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:06:44,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:06:44,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-09-30 20:06:44,159 INFO L87 Difference]: Start difference. First operand 77 states and 134 transitions. Second operand 13 states. [2018-09-30 20:06:45,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:45,889 INFO L93 Difference]: Finished difference Result 150 states and 246 transitions. [2018-09-30 20:06:45,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:06:45,890 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2018-09-30 20:06:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:45,893 INFO L225 Difference]: With dead ends: 150 [2018-09-30 20:06:45,893 INFO L226 Difference]: Without dead ends: 148 [2018-09-30 20:06:45,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2018-09-30 20:06:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-09-30 20:06:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 106. [2018-09-30 20:06:45,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-09-30 20:06:45,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 185 transitions. [2018-09-30 20:06:45,946 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 185 transitions. Word has length 8 [2018-09-30 20:06:45,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:45,946 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 185 transitions. [2018-09-30 20:06:45,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:06:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 185 transitions. [2018-09-30 20:06:45,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:45,952 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:45,952 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:45,953 INFO L423 AbstractCegarLoop]: === Iteration 8 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:45,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:45,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1965445053, now seen corresponding path program 1 times [2018-09-30 20:06:45,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:45,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:45,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:45,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:45,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:46,060 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:46,060 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:46,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:46,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:46,264 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:46,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2018-09-30 20:06:46,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:06:46,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:06:46,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-09-30 20:06:46,266 INFO L87 Difference]: Start difference. First operand 106 states and 185 transitions. Second operand 13 states. [2018-09-30 20:06:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:47,292 INFO L93 Difference]: Finished difference Result 137 states and 241 transitions. [2018-09-30 20:06:47,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:06:47,292 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2018-09-30 20:06:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:47,294 INFO L225 Difference]: With dead ends: 137 [2018-09-30 20:06:47,294 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 20:06:47,294 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2018-09-30 20:06:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 20:06:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2018-09-30 20:06:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 20:06:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 194 transitions. [2018-09-30 20:06:47,319 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 194 transitions. Word has length 8 [2018-09-30 20:06:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:47,320 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 194 transitions. [2018-09-30 20:06:47,320 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:06:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 194 transitions. [2018-09-30 20:06:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:47,321 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:47,321 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:47,321 INFO L423 AbstractCegarLoop]: === Iteration 9 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:47,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:47,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2040447037, now seen corresponding path program 1 times [2018-09-30 20:06:47,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:47,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:47,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:47,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:47,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:47,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:47,675 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:47,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:47,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:47,917 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:47,917 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2018-09-30 20:06:47,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:06:47,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:06:47,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-09-30 20:06:47,918 INFO L87 Difference]: Start difference. First operand 111 states and 194 transitions. Second operand 12 states. [2018-09-30 20:06:48,949 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-30 20:06:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:50,089 INFO L93 Difference]: Finished difference Result 211 states and 359 transitions. [2018-09-30 20:06:50,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:06:50,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 8 [2018-09-30 20:06:50,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:50,091 INFO L225 Difference]: With dead ends: 211 [2018-09-30 20:06:50,091 INFO L226 Difference]: Without dead ends: 209 [2018-09-30 20:06:50,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2018-09-30 20:06:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-09-30 20:06:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 173. [2018-09-30 20:06:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-30 20:06:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 304 transitions. [2018-09-30 20:06:50,124 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 304 transitions. Word has length 8 [2018-09-30 20:06:50,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:50,125 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 304 transitions. [2018-09-30 20:06:50,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:06:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 304 transitions. [2018-09-30 20:06:50,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:50,126 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:50,126 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:50,126 INFO L423 AbstractCegarLoop]: === Iteration 10 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:50,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash -84509544, now seen corresponding path program 1 times [2018-09-30 20:06:50,127 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:50,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:50,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:50,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:50,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:50,197 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:50,197 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:50,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:50,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:50,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:50,301 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:50,301 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-09-30 20:06:50,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:06:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:06:50,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-09-30 20:06:50,302 INFO L87 Difference]: Start difference. First operand 173 states and 304 transitions. Second operand 10 states. [2018-09-30 20:06:50,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:50,923 INFO L93 Difference]: Finished difference Result 246 states and 415 transitions. [2018-09-30 20:06:50,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:06:50,926 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2018-09-30 20:06:50,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:50,927 INFO L225 Difference]: With dead ends: 246 [2018-09-30 20:06:50,928 INFO L226 Difference]: Without dead ends: 245 [2018-09-30 20:06:50,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2018-09-30 20:06:50,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-09-30 20:06:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 201. [2018-09-30 20:06:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-09-30 20:06:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 358 transitions. [2018-09-30 20:06:50,963 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 358 transitions. Word has length 8 [2018-09-30 20:06:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:50,964 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 358 transitions. [2018-09-30 20:06:50,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:06:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 358 transitions. [2018-09-30 20:06:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:50,965 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:50,965 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:50,965 INFO L423 AbstractCegarLoop]: === Iteration 11 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:50,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:50,966 INFO L82 PathProgramCache]: Analyzing trace with hash -84508262, now seen corresponding path program 1 times [2018-09-30 20:06:50,966 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:50,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:50,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:50,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:50,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:51,294 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:51,294 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:51,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:51,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:51,334 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:51,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 20:06:51,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:06:51,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:06:51,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:06:51,336 INFO L87 Difference]: Start difference. First operand 201 states and 358 transitions. Second operand 7 states. [2018-09-30 20:06:51,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:51,719 INFO L93 Difference]: Finished difference Result 252 states and 436 transitions. [2018-09-30 20:06:51,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:06:51,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-09-30 20:06:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:51,725 INFO L225 Difference]: With dead ends: 252 [2018-09-30 20:06:51,726 INFO L226 Difference]: Without dead ends: 250 [2018-09-30 20:06:51,726 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-09-30 20:06:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-09-30 20:06:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 210. [2018-09-30 20:06:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-09-30 20:06:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 375 transitions. [2018-09-30 20:06:51,765 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 375 transitions. Word has length 8 [2018-09-30 20:06:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:51,765 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 375 transitions. [2018-09-30 20:06:51,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:06:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 375 transitions. [2018-09-30 20:06:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:51,767 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:51,767 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:51,767 INFO L423 AbstractCegarLoop]: === Iteration 12 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:51,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:51,767 INFO L82 PathProgramCache]: Analyzing trace with hash -75921375, now seen corresponding path program 1 times [2018-09-30 20:06:51,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:51,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:51,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:51,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:51,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:51,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:51,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:51,943 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:51,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:51,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:52,033 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:52,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-09-30 20:06:52,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:06:52,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:06:52,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-09-30 20:06:52,034 INFO L87 Difference]: Start difference. First operand 210 states and 375 transitions. Second operand 10 states. [2018-09-30 20:06:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:52,332 INFO L93 Difference]: Finished difference Result 260 states and 452 transitions. [2018-09-30 20:06:52,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:06:52,333 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2018-09-30 20:06:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:52,335 INFO L225 Difference]: With dead ends: 260 [2018-09-30 20:06:52,335 INFO L226 Difference]: Without dead ends: 259 [2018-09-30 20:06:52,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-30 20:06:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-30 20:06:52,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 229. [2018-09-30 20:06:52,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-09-30 20:06:52,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 409 transitions. [2018-09-30 20:06:52,371 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 409 transitions. Word has length 8 [2018-09-30 20:06:52,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:52,371 INFO L480 AbstractCegarLoop]: Abstraction has 229 states and 409 transitions. [2018-09-30 20:06:52,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:06:52,372 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 409 transitions. [2018-09-30 20:06:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:52,373 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:52,373 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:52,373 INFO L423 AbstractCegarLoop]: === Iteration 13 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:52,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:52,373 INFO L82 PathProgramCache]: Analyzing trace with hash -75920285, now seen corresponding path program 1 times [2018-09-30 20:06:52,374 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:52,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:52,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:52,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:52,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:52,471 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:06:52,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-30 20:06:52,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:06:52,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:06:52,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:06:52,472 INFO L87 Difference]: Start difference. First operand 229 states and 409 transitions. Second operand 7 states. [2018-09-30 20:06:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:53,113 INFO L93 Difference]: Finished difference Result 316 states and 557 transitions. [2018-09-30 20:06:53,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:06:53,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-09-30 20:06:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:53,115 INFO L225 Difference]: With dead ends: 316 [2018-09-30 20:06:53,116 INFO L226 Difference]: Without dead ends: 314 [2018-09-30 20:06:53,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:06:53,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2018-09-30 20:06:53,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 245. [2018-09-30 20:06:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-09-30 20:06:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 438 transitions. [2018-09-30 20:06:53,158 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 438 transitions. Word has length 8 [2018-09-30 20:06:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:53,159 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 438 transitions. [2018-09-30 20:06:53,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:06:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 438 transitions. [2018-09-30 20:06:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:06:53,160 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:53,160 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:53,160 INFO L423 AbstractCegarLoop]: === Iteration 14 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:53,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:53,161 INFO L82 PathProgramCache]: Analyzing trace with hash -35778354, now seen corresponding path program 1 times [2018-09-30 20:06:53,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:53,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:53,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:53,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:53,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:53,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:53,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:53,225 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:53,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:53,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:53,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:53,272 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:53,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 20:06:53,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:06:53,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:06:53,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:06:53,274 INFO L87 Difference]: Start difference. First operand 245 states and 438 transitions. Second operand 7 states. [2018-09-30 20:06:53,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:53,660 INFO L93 Difference]: Finished difference Result 428 states and 767 transitions. [2018-09-30 20:06:53,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:06:53,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-09-30 20:06:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:53,664 INFO L225 Difference]: With dead ends: 428 [2018-09-30 20:06:53,664 INFO L226 Difference]: Without dead ends: 426 [2018-09-30 20:06:53,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-09-30 20:06:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2018-09-30 20:06:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 345. [2018-09-30 20:06:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-09-30 20:06:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 622 transitions. [2018-09-30 20:06:53,727 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 622 transitions. Word has length 8 [2018-09-30 20:06:53,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:53,728 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 622 transitions. [2018-09-30 20:06:53,728 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:06:53,728 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 622 transitions. [2018-09-30 20:06:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:06:53,729 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:53,729 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:53,729 INFO L423 AbstractCegarLoop]: === Iteration 15 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:53,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1740000584, now seen corresponding path program 1 times [2018-09-30 20:06:53,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:53,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:53,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:53,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:53,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:53,952 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:53,952 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:53,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:53,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:54,035 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:54,035 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-09-30 20:06:54,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:06:54,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:06:54,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-09-30 20:06:54,036 INFO L87 Difference]: Start difference. First operand 345 states and 622 transitions. Second operand 10 states. [2018-09-30 20:06:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:55,209 INFO L93 Difference]: Finished difference Result 466 states and 826 transitions. [2018-09-30 20:06:55,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:06:55,210 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2018-09-30 20:06:55,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:55,213 INFO L225 Difference]: With dead ends: 466 [2018-09-30 20:06:55,213 INFO L226 Difference]: Without dead ends: 464 [2018-09-30 20:06:55,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2018-09-30 20:06:55,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2018-09-30 20:06:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 351. [2018-09-30 20:06:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-30 20:06:55,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 634 transitions. [2018-09-30 20:06:55,298 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 634 transitions. Word has length 11 [2018-09-30 20:06:55,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:55,298 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 634 transitions. [2018-09-30 20:06:55,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:06:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 634 transitions. [2018-09-30 20:06:55,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:06:55,300 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:55,300 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:55,300 INFO L423 AbstractCegarLoop]: === Iteration 16 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:55,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:55,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1701828094, now seen corresponding path program 1 times [2018-09-30 20:06:55,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:55,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:55,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:55,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:55,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:55,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:55,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:55,874 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:55,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:55,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:56,012 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-30 20:06:56,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2018-09-30 20:06:56,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:06:56,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:06:56,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2018-09-30 20:06:56,013 INFO L87 Difference]: Start difference. First operand 351 states and 634 transitions. Second operand 14 states. [2018-09-30 20:06:58,351 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2018-09-30 20:06:58,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:58,503 INFO L93 Difference]: Finished difference Result 859 states and 1521 transitions. [2018-09-30 20:06:58,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 20:06:58,503 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2018-09-30 20:06:58,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:58,506 INFO L225 Difference]: With dead ends: 859 [2018-09-30 20:06:58,506 INFO L226 Difference]: Without dead ends: 509 [2018-09-30 20:06:58,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=375, Invalid=1881, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 20:06:58,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2018-09-30 20:06:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 388. [2018-09-30 20:06:58,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 388 states. [2018-09-30 20:06:58,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 697 transitions. [2018-09-30 20:06:58,594 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 697 transitions. Word has length 11 [2018-09-30 20:06:58,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:58,594 INFO L480 AbstractCegarLoop]: Abstraction has 388 states and 697 transitions. [2018-09-30 20:06:58,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:06:58,595 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 697 transitions. [2018-09-30 20:06:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:06:58,595 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:58,595 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:58,596 INFO L423 AbstractCegarLoop]: === Iteration 17 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:58,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:58,596 INFO L82 PathProgramCache]: Analyzing trace with hash 707064552, now seen corresponding path program 1 times [2018-09-30 20:06:58,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:58,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:58,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:58,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:58,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:58,765 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:06:58,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-30 20:06:58,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:06:58,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:06:58,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-09-30 20:06:58,767 INFO L87 Difference]: Start difference. First operand 388 states and 697 transitions. Second operand 8 states. [2018-09-30 20:06:59,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:06:59,434 INFO L93 Difference]: Finished difference Result 481 states and 848 transitions. [2018-09-30 20:06:59,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:06:59,435 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-09-30 20:06:59,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:06:59,437 INFO L225 Difference]: With dead ends: 481 [2018-09-30 20:06:59,437 INFO L226 Difference]: Without dead ends: 479 [2018-09-30 20:06:59,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2018-09-30 20:06:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-09-30 20:06:59,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 394. [2018-09-30 20:06:59,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2018-09-30 20:06:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 703 transitions. [2018-09-30 20:06:59,524 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 703 transitions. Word has length 11 [2018-09-30 20:06:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:06:59,524 INFO L480 AbstractCegarLoop]: Abstraction has 394 states and 703 transitions. [2018-09-30 20:06:59,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:06:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 703 transitions. [2018-09-30 20:06:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:06:59,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:06:59,526 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:06:59,526 INFO L423 AbstractCegarLoop]: === Iteration 18 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:06:59,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:06:59,526 INFO L82 PathProgramCache]: Analyzing trace with hash 739509354, now seen corresponding path program 1 times [2018-09-30 20:06:59,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:06:59,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:06:59,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:59,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:59,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:06:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:59,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:59,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:06:59,684 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:06:59,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:06:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:06:59,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:06:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:06:59,820 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:06:59,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2018-09-30 20:06:59,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:06:59,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:06:59,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-09-30 20:06:59,821 INFO L87 Difference]: Start difference. First operand 394 states and 703 transitions. Second operand 13 states. [2018-09-30 20:07:00,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:00,862 INFO L93 Difference]: Finished difference Result 952 states and 1676 transitions. [2018-09-30 20:07:00,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:07:00,863 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2018-09-30 20:07:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:00,866 INFO L225 Difference]: With dead ends: 952 [2018-09-30 20:07:00,866 INFO L226 Difference]: Without dead ends: 559 [2018-09-30 20:07:00,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=915, Unknown=0, NotChecked=0, Total=1122 [2018-09-30 20:07:00,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-09-30 20:07:00,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 473. [2018-09-30 20:07:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2018-09-30 20:07:00,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 835 transitions. [2018-09-30 20:07:00,961 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 835 transitions. Word has length 11 [2018-09-30 20:07:00,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:00,962 INFO L480 AbstractCegarLoop]: Abstraction has 473 states and 835 transitions. [2018-09-30 20:07:00,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:07:00,962 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 835 transitions. [2018-09-30 20:07:00,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:00,963 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:00,963 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:00,963 INFO L423 AbstractCegarLoop]: === Iteration 19 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:00,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:00,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1106731073, now seen corresponding path program 1 times [2018-09-30 20:07:00,963 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:00,964 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:00,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:00,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:00,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:01,062 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:07:01,063 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-30 20:07:01,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:07:01,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:07:01,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-09-30 20:07:01,064 INFO L87 Difference]: Start difference. First operand 473 states and 835 transitions. Second operand 8 states. [2018-09-30 20:07:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:01,445 INFO L93 Difference]: Finished difference Result 524 states and 904 transitions. [2018-09-30 20:07:01,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:07:01,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2018-09-30 20:07:01,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:01,452 INFO L225 Difference]: With dead ends: 524 [2018-09-30 20:07:01,452 INFO L226 Difference]: Without dead ends: 522 [2018-09-30 20:07:01,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:07:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2018-09-30 20:07:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 485. [2018-09-30 20:07:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2018-09-30 20:07:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 855 transitions. [2018-09-30 20:07:01,565 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 855 transitions. Word has length 11 [2018-09-30 20:07:01,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:01,565 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 855 transitions. [2018-09-30 20:07:01,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:07:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 855 transitions. [2018-09-30 20:07:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:01,566 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:01,566 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:01,567 INFO L423 AbstractCegarLoop]: === Iteration 20 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:01,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:01,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1098144186, now seen corresponding path program 1 times [2018-09-30 20:07:01,567 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:01,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:01,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:01,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:01,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:02,038 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:02,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:02,038 INFO L227 ckRefinementStrategy]: 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) [2018-09-30 20:07:02,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:02,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:02,442 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:02,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-09-30 20:07:02,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 20:07:02,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 20:07:02,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-09-30 20:07:02,443 INFO L87 Difference]: Start difference. First operand 485 states and 855 transitions. Second operand 9 states. [2018-09-30 20:07:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:03,631 INFO L93 Difference]: Finished difference Result 556 states and 964 transitions. [2018-09-30 20:07:03,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 20:07:03,641 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2018-09-30 20:07:03,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:03,643 INFO L225 Difference]: With dead ends: 556 [2018-09-30 20:07:03,643 INFO L226 Difference]: Without dead ends: 554 [2018-09-30 20:07:03,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-09-30 20:07:03,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-09-30 20:07:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 489. [2018-09-30 20:07:03,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2018-09-30 20:07:03,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 861 transitions. [2018-09-30 20:07:03,737 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 861 transitions. Word has length 11 [2018-09-30 20:07:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:03,737 INFO L480 AbstractCegarLoop]: Abstraction has 489 states and 861 transitions. [2018-09-30 20:07:03,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 20:07:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 861 transitions. [2018-09-30 20:07:03,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:03,738 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:03,738 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:03,739 INFO L423 AbstractCegarLoop]: === Iteration 21 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:03,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:03,739 INFO L82 PathProgramCache]: Analyzing trace with hash -772910566, now seen corresponding path program 1 times [2018-09-30 20:07:03,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:03,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:03,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:03,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:03,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:03,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:03,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:03,803 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:03,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:03,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:03,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:03,957 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:03,957 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2018-09-30 20:07:03,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:07:03,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:07:03,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-09-30 20:07:03,958 INFO L87 Difference]: Start difference. First operand 489 states and 861 transitions. Second operand 13 states. [2018-09-30 20:07:04,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:04,914 INFO L93 Difference]: Finished difference Result 631 states and 1077 transitions. [2018-09-30 20:07:04,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:07:04,914 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2018-09-30 20:07:04,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:04,916 INFO L225 Difference]: With dead ends: 631 [2018-09-30 20:07:04,917 INFO L226 Difference]: Without dead ends: 629 [2018-09-30 20:07:04,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2018-09-30 20:07:04,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2018-09-30 20:07:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 513. [2018-09-30 20:07:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2018-09-30 20:07:05,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 904 transitions. [2018-09-30 20:07:05,026 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 904 transitions. Word has length 11 [2018-09-30 20:07:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:05,027 INFO L480 AbstractCegarLoop]: Abstraction has 513 states and 904 transitions. [2018-09-30 20:07:05,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:07:05,027 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 904 transitions. [2018-09-30 20:07:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:05,027 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:05,027 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:05,028 INFO L423 AbstractCegarLoop]: === Iteration 22 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:05,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:05,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1674153000, now seen corresponding path program 2 times [2018-09-30 20:07:05,028 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:05,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:05,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:05,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:05,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:05,247 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:05,247 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:05,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:07:05,266 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:07:05,266 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:07:05,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:05,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:05,291 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:07:05,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:07:05,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:07:05,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:07:05,292 INFO L87 Difference]: Start difference. First operand 513 states and 904 transitions. Second operand 7 states. [2018-09-30 20:07:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:05,767 INFO L93 Difference]: Finished difference Result 601 states and 1040 transitions. [2018-09-30 20:07:05,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:07:05,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-09-30 20:07:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:05,770 INFO L225 Difference]: With dead ends: 601 [2018-09-30 20:07:05,770 INFO L226 Difference]: Without dead ends: 599 [2018-09-30 20:07:05,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2018-09-30 20:07:05,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2018-09-30 20:07:05,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 509. [2018-09-30 20:07:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2018-09-30 20:07:05,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 898 transitions. [2018-09-30 20:07:05,892 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 898 transitions. Word has length 11 [2018-09-30 20:07:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:05,892 INFO L480 AbstractCegarLoop]: Abstraction has 509 states and 898 transitions. [2018-09-30 20:07:05,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:07:05,893 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 898 transitions. [2018-09-30 20:07:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:05,893 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:05,894 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:05,894 INFO L423 AbstractCegarLoop]: === Iteration 23 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:05,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:05,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1682742259, now seen corresponding path program 1 times [2018-09-30 20:07:05,894 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:05,895 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:05,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:05,895 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:07:05,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:06,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:06,084 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:06,084 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:06,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:06,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:06,135 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:06,135 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:07:06,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:07:06,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:07:06,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:07:06,136 INFO L87 Difference]: Start difference. First operand 509 states and 898 transitions. Second operand 7 states. [2018-09-30 20:07:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:06,648 INFO L93 Difference]: Finished difference Result 624 states and 1088 transitions. [2018-09-30 20:07:06,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 20:07:06,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-09-30 20:07:06,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:06,651 INFO L225 Difference]: With dead ends: 624 [2018-09-30 20:07:06,651 INFO L226 Difference]: Without dead ends: 622 [2018-09-30 20:07:06,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-09-30 20:07:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2018-09-30 20:07:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 538. [2018-09-30 20:07:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2018-09-30 20:07:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 949 transitions. [2018-09-30 20:07:06,745 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 949 transitions. Word has length 11 [2018-09-30 20:07:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:06,745 INFO L480 AbstractCegarLoop]: Abstraction has 538 states and 949 transitions. [2018-09-30 20:07:06,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:07:06,745 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 949 transitions. [2018-09-30 20:07:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:06,746 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:06,746 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:06,746 INFO L423 AbstractCegarLoop]: === Iteration 24 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:06,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:06,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1927251354, now seen corresponding path program 1 times [2018-09-30 20:07:06,747 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:06,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:06,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:06,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:06,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:06,805 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:06,805 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:06,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:06,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:06,848 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:06,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:07:06,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:07:06,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:07:06,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:07:06,850 INFO L87 Difference]: Start difference. First operand 538 states and 949 transitions. Second operand 7 states. [2018-09-30 20:07:07,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:07,278 INFO L93 Difference]: Finished difference Result 584 states and 1012 transitions. [2018-09-30 20:07:07,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:07:07,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-09-30 20:07:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:07,280 INFO L225 Difference]: With dead ends: 584 [2018-09-30 20:07:07,281 INFO L226 Difference]: Without dead ends: 582 [2018-09-30 20:07:07,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-30 20:07:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2018-09-30 20:07:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 543. [2018-09-30 20:07:07,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-09-30 20:07:07,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 956 transitions. [2018-09-30 20:07:07,368 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 956 transitions. Word has length 11 [2018-09-30 20:07:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:07,368 INFO L480 AbstractCegarLoop]: Abstraction has 543 states and 956 transitions. [2018-09-30 20:07:07,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:07:07,368 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 956 transitions. [2018-09-30 20:07:07,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:07,369 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:07,369 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:07,369 INFO L423 AbstractCegarLoop]: === Iteration 25 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:07,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:07,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1918662095, now seen corresponding path program 1 times [2018-09-30 20:07:07,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:07,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:07,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:07,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:07,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:07,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:07,456 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:07,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:07,471 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:07,495 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:07,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:07:07,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:07:07,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:07:07,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:07:07,496 INFO L87 Difference]: Start difference. First operand 543 states and 956 transitions. Second operand 7 states. [2018-09-30 20:07:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:07,949 INFO L93 Difference]: Finished difference Result 618 states and 1074 transitions. [2018-09-30 20:07:07,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:07:07,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-09-30 20:07:07,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:07,952 INFO L225 Difference]: With dead ends: 618 [2018-09-30 20:07:07,952 INFO L226 Difference]: Without dead ends: 616 [2018-09-30 20:07:07,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-09-30 20:07:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2018-09-30 20:07:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 529. [2018-09-30 20:07:08,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-09-30 20:07:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 929 transitions. [2018-09-30 20:07:08,049 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 929 transitions. Word has length 11 [2018-09-30 20:07:08,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:08,050 INFO L480 AbstractCegarLoop]: Abstraction has 529 states and 929 transitions. [2018-09-30 20:07:08,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:07:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 929 transitions. [2018-09-30 20:07:08,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-30 20:07:08,050 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:08,051 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:08,051 INFO L423 AbstractCegarLoop]: === Iteration 26 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:08,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:08,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1878520164, now seen corresponding path program 1 times [2018-09-30 20:07:08,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:08,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:08,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:08,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:08,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:08,117 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:08,117 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:08,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:08,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:08,152 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:08,153 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 20:07:08,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:07:08,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:07:08,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-30 20:07:08,153 INFO L87 Difference]: Start difference. First operand 529 states and 929 transitions. Second operand 7 states. [2018-09-30 20:07:08,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:08,638 INFO L93 Difference]: Finished difference Result 613 states and 1066 transitions. [2018-09-30 20:07:08,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:07:08,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2018-09-30 20:07:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:08,640 INFO L225 Difference]: With dead ends: 613 [2018-09-30 20:07:08,641 INFO L226 Difference]: Without dead ends: 611 [2018-09-30 20:07:08,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-30 20:07:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2018-09-30 20:07:08,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 523. [2018-09-30 20:07:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2018-09-30 20:07:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 914 transitions. [2018-09-30 20:07:08,737 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 914 transitions. Word has length 11 [2018-09-30 20:07:08,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:08,737 INFO L480 AbstractCegarLoop]: Abstraction has 523 states and 914 transitions. [2018-09-30 20:07:08,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:07:08,737 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 914 transitions. [2018-09-30 20:07:08,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-30 20:07:08,738 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:08,738 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:08,738 INFO L423 AbstractCegarLoop]: === Iteration 27 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:08,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:08,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1730497723, now seen corresponding path program 1 times [2018-09-30 20:07:08,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:08,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:08,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:08,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:08,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:08,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:08,997 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:08,997 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:09,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:09,016 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:09,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:09,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2018-09-30 20:07:09,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:07:09,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:07:09,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-09-30 20:07:09,088 INFO L87 Difference]: Start difference. First operand 523 states and 914 transitions. Second operand 12 states. [2018-09-30 20:07:10,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:10,041 INFO L93 Difference]: Finished difference Result 875 states and 1523 transitions. [2018-09-30 20:07:10,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 20:07:10,041 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-09-30 20:07:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:10,045 INFO L225 Difference]: With dead ends: 875 [2018-09-30 20:07:10,045 INFO L226 Difference]: Without dead ends: 873 [2018-09-30 20:07:10,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2018-09-30 20:07:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2018-09-30 20:07:10,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 651. [2018-09-30 20:07:10,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2018-09-30 20:07:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1146 transitions. [2018-09-30 20:07:10,151 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1146 transitions. Word has length 12 [2018-09-30 20:07:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:10,152 INFO L480 AbstractCegarLoop]: Abstraction has 651 states and 1146 transitions. [2018-09-30 20:07:10,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:07:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1146 transitions. [2018-09-30 20:07:10,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-30 20:07:10,152 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:10,152 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:10,152 INFO L423 AbstractCegarLoop]: === Iteration 28 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:10,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:10,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1895489947, now seen corresponding path program 1 times [2018-09-30 20:07:10,153 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:10,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:10,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:10,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:10,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:10,241 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:10,241 INFO L227 ckRefinementStrategy]: 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 [2018-09-30 20:07:10,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:10,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:10,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:10,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:10,345 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-09-30 20:07:10,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:07:10,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:07:10,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-09-30 20:07:10,346 INFO L87 Difference]: Start difference. First operand 651 states and 1146 transitions. Second operand 13 states. [2018-09-30 20:07:11,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:11,799 INFO L93 Difference]: Finished difference Result 1281 states and 2254 transitions. [2018-09-30 20:07:11,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 20:07:11,799 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-09-30 20:07:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:11,805 INFO L225 Difference]: With dead ends: 1281 [2018-09-30 20:07:11,805 INFO L226 Difference]: Without dead ends: 1279 [2018-09-30 20:07:11,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=260, Invalid=1000, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 20:07:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2018-09-30 20:07:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 923. [2018-09-30 20:07:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2018-09-30 20:07:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1627 transitions. [2018-09-30 20:07:11,985 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1627 transitions. Word has length 12 [2018-09-30 20:07:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:11,985 INFO L480 AbstractCegarLoop]: Abstraction has 923 states and 1627 transitions. [2018-09-30 20:07:11,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:07:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1627 transitions. [2018-09-30 20:07:11,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 20:07:11,986 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:11,986 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:11,986 INFO L423 AbstractCegarLoop]: === Iteration 29 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:11,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:11,987 INFO L82 PathProgramCache]: Analyzing trace with hash -397030605, now seen corresponding path program 1 times [2018-09-30 20:07:11,987 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:11,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:11,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:11,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:11,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:12,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:12,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:12,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:12,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:12,145 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:12,145 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-09-30 20:07:12,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 20:07:12,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 20:07:12,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-09-30 20:07:12,146 INFO L87 Difference]: Start difference. First operand 923 states and 1627 transitions. Second operand 11 states. [2018-09-30 20:07:12,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:12,859 INFO L93 Difference]: Finished difference Result 1054 states and 1838 transitions. [2018-09-30 20:07:12,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 20:07:12,860 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-09-30 20:07:12,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:12,863 INFO L225 Difference]: With dead ends: 1054 [2018-09-30 20:07:12,864 INFO L226 Difference]: Without dead ends: 1052 [2018-09-30 20:07:12,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2018-09-30 20:07:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1052 states. [2018-09-30 20:07:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1052 to 933. [2018-09-30 20:07:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2018-09-30 20:07:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1644 transitions. [2018-09-30 20:07:13,040 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1644 transitions. Word has length 14 [2018-09-30 20:07:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:13,040 INFO L480 AbstractCegarLoop]: Abstraction has 933 states and 1644 transitions. [2018-09-30 20:07:13,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 20:07:13,041 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1644 transitions. [2018-09-30 20:07:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 20:07:13,042 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:13,042 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:13,042 INFO L423 AbstractCegarLoop]: === Iteration 30 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:13,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:13,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1593749093, now seen corresponding path program 2 times [2018-09-30 20:07:13,043 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:13,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:13,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:13,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:13,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:13,124 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:13,124 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:13,133 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:07:13,140 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:07:13,140 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:07:13,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:13,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:13,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:13,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-09-30 20:07:13,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:07:13,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:07:13,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-09-30 20:07:13,240 INFO L87 Difference]: Start difference. First operand 933 states and 1644 transitions. Second operand 12 states. [2018-09-30 20:07:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:14,614 INFO L93 Difference]: Finished difference Result 1125 states and 1938 transitions. [2018-09-30 20:07:14,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 20:07:14,614 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2018-09-30 20:07:14,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:14,618 INFO L225 Difference]: With dead ends: 1125 [2018-09-30 20:07:14,618 INFO L226 Difference]: Without dead ends: 1123 [2018-09-30 20:07:14,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=827, Unknown=0, NotChecked=0, Total=1056 [2018-09-30 20:07:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2018-09-30 20:07:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 923. [2018-09-30 20:07:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2018-09-30 20:07:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1627 transitions. [2018-09-30 20:07:14,802 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1627 transitions. Word has length 14 [2018-09-30 20:07:14,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:14,802 INFO L480 AbstractCegarLoop]: Abstraction has 923 states and 1627 transitions. [2018-09-30 20:07:14,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:07:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1627 transitions. [2018-09-30 20:07:14,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 20:07:14,803 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:14,803 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:14,803 INFO L423 AbstractCegarLoop]: === Iteration 31 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:14,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash -213121378, now seen corresponding path program 1 times [2018-09-30 20:07:14,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:14,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:14,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:14,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:07:14,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:14,898 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:14,898 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:14,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:14,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:15,038 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:15,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2018-09-30 20:07:15,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:07:15,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:07:15,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-09-30 20:07:15,039 INFO L87 Difference]: Start difference. First operand 923 states and 1627 transitions. Second operand 14 states. [2018-09-30 20:07:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:16,496 INFO L93 Difference]: Finished difference Result 1125 states and 1949 transitions. [2018-09-30 20:07:16,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 20:07:16,497 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-09-30 20:07:16,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:16,500 INFO L225 Difference]: With dead ends: 1125 [2018-09-30 20:07:16,501 INFO L226 Difference]: Without dead ends: 1123 [2018-09-30 20:07:16,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=266, Invalid=1066, Unknown=0, NotChecked=0, Total=1332 [2018-09-30 20:07:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2018-09-30 20:07:16,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 919. [2018-09-30 20:07:16,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2018-09-30 20:07:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1620 transitions. [2018-09-30 20:07:16,689 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1620 transitions. Word has length 14 [2018-09-30 20:07:16,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:16,689 INFO L480 AbstractCegarLoop]: Abstraction has 919 states and 1620 transitions. [2018-09-30 20:07:16,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:07:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1620 transitions. [2018-09-30 20:07:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 20:07:16,690 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:16,690 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:16,691 INFO L423 AbstractCegarLoop]: === Iteration 32 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:16,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:16,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1838595071, now seen corresponding path program 1 times [2018-09-30 20:07:16,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:16,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:16,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:16,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:16,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:16,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:16,800 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:16,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:16,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:16,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:16,883 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:16,884 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2018-09-30 20:07:16,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:07:16,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:07:16,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-09-30 20:07:16,884 INFO L87 Difference]: Start difference. First operand 919 states and 1620 transitions. Second operand 12 states. [2018-09-30 20:07:17,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:17,762 INFO L93 Difference]: Finished difference Result 1117 states and 1948 transitions. [2018-09-30 20:07:17,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 20:07:17,762 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2018-09-30 20:07:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:17,766 INFO L225 Difference]: With dead ends: 1117 [2018-09-30 20:07:17,766 INFO L226 Difference]: Without dead ends: 1115 [2018-09-30 20:07:17,767 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2018-09-30 20:07:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2018-09-30 20:07:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 883. [2018-09-30 20:07:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2018-09-30 20:07:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1560 transitions. [2018-09-30 20:07:17,947 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1560 transitions. Word has length 14 [2018-09-30 20:07:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:17,947 INFO L480 AbstractCegarLoop]: Abstraction has 883 states and 1560 transitions. [2018-09-30 20:07:17,947 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:07:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1560 transitions. [2018-09-30 20:07:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 20:07:17,948 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:17,948 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:17,948 INFO L423 AbstractCegarLoop]: === Iteration 33 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:17,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash -47479579, now seen corresponding path program 1 times [2018-09-30 20:07:17,949 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:17,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:17,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:17,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:17,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:18,086 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:18,087 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:18,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:18,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:18,150 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:18,150 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-09-30 20:07:18,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 20:07:18,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 20:07:18,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-09-30 20:07:18,151 INFO L87 Difference]: Start difference. First operand 883 states and 1560 transitions. Second operand 11 states. [2018-09-30 20:07:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:19,096 INFO L93 Difference]: Finished difference Result 995 states and 1722 transitions. [2018-09-30 20:07:19,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 20:07:19,097 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2018-09-30 20:07:19,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:19,100 INFO L225 Difference]: With dead ends: 995 [2018-09-30 20:07:19,100 INFO L226 Difference]: Without dead ends: 993 [2018-09-30 20:07:19,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-09-30 20:07:19,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2018-09-30 20:07:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 877. [2018-09-30 20:07:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2018-09-30 20:07:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1548 transitions. [2018-09-30 20:07:19,286 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1548 transitions. Word has length 14 [2018-09-30 20:07:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:19,286 INFO L480 AbstractCegarLoop]: Abstraction has 877 states and 1548 transitions. [2018-09-30 20:07:19,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 20:07:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1548 transitions. [2018-09-30 20:07:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:07:19,287 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:19,287 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-09-30 20:07:19,288 INFO L423 AbstractCegarLoop]: === Iteration 34 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:19,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:19,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2027388784, now seen corresponding path program 1 times [2018-09-30 20:07:19,288 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:19,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:19,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:19,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:19,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:20,048 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-09-30 20:07:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:20,118 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:20,118 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:20,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:20,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:20,274 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:20,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2018-09-30 20:07:20,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:07:20,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:07:20,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:07:20,275 INFO L87 Difference]: Start difference. First operand 877 states and 1548 transitions. Second operand 17 states. [2018-09-30 20:07:22,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:22,692 INFO L93 Difference]: Finished difference Result 2105 states and 3670 transitions. [2018-09-30 20:07:22,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 20:07:22,693 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2018-09-30 20:07:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:22,697 INFO L225 Difference]: With dead ends: 2105 [2018-09-30 20:07:22,697 INFO L226 Difference]: Without dead ends: 1229 [2018-09-30 20:07:22,699 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=635, Invalid=2557, Unknown=0, NotChecked=0, Total=3192 [2018-09-30 20:07:22,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-09-30 20:07:22,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1014. [2018-09-30 20:07:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2018-09-30 20:07:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1752 transitions. [2018-09-30 20:07:22,917 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1752 transitions. Word has length 15 [2018-09-30 20:07:22,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:22,917 INFO L480 AbstractCegarLoop]: Abstraction has 1014 states and 1752 transitions. [2018-09-30 20:07:22,917 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:07:22,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1752 transitions. [2018-09-30 20:07:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:07:22,918 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:22,918 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:22,918 INFO L423 AbstractCegarLoop]: === Iteration 35 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:22,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:22,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1084233543, now seen corresponding path program 1 times [2018-09-30 20:07:22,919 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:22,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:22,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:22,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:22,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:23,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:23,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:23,033 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:23,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:23,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:23,163 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:23,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-09-30 20:07:23,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:07:23,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:07:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:07:23,164 INFO L87 Difference]: Start difference. First operand 1014 states and 1752 transitions. Second operand 15 states. [2018-09-30 20:07:23,943 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19 [2018-09-30 20:07:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:25,412 INFO L93 Difference]: Finished difference Result 2110 states and 3623 transitions. [2018-09-30 20:07:25,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 20:07:25,412 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-30 20:07:25,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:25,416 INFO L225 Difference]: With dead ends: 2110 [2018-09-30 20:07:25,416 INFO L226 Difference]: Without dead ends: 1097 [2018-09-30 20:07:25,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=426, Invalid=2024, Unknown=0, NotChecked=0, Total=2450 [2018-09-30 20:07:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-09-30 20:07:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 951. [2018-09-30 20:07:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2018-09-30 20:07:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1643 transitions. [2018-09-30 20:07:25,620 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1643 transitions. Word has length 15 [2018-09-30 20:07:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:25,620 INFO L480 AbstractCegarLoop]: Abstraction has 951 states and 1643 transitions. [2018-09-30 20:07:25,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:07:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1643 transitions. [2018-09-30 20:07:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:07:25,621 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:25,621 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:25,622 INFO L423 AbstractCegarLoop]: === Iteration 36 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:25,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:25,622 INFO L82 PathProgramCache]: Analyzing trace with hash -185533858, now seen corresponding path program 1 times [2018-09-30 20:07:25,622 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:25,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:25,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:25,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:25,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:25,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:25,736 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:25,736 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:25,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:25,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:25,852 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:25,853 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-09-30 20:07:25,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:07:25,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:07:25,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:07:25,853 INFO L87 Difference]: Start difference. First operand 951 states and 1643 transitions. Second operand 15 states. [2018-09-30 20:07:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:28,128 INFO L93 Difference]: Finished difference Result 2832 states and 4780 transitions. [2018-09-30 20:07:28,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 20:07:28,129 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-30 20:07:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:28,136 INFO L225 Difference]: With dead ends: 2832 [2018-09-30 20:07:28,136 INFO L226 Difference]: Without dead ends: 1867 [2018-09-30 20:07:28,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=702, Invalid=3330, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 20:07:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2018-09-30 20:07:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1571. [2018-09-30 20:07:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1571 states. [2018-09-30 20:07:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2660 transitions. [2018-09-30 20:07:28,483 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2660 transitions. Word has length 15 [2018-09-30 20:07:28,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:28,483 INFO L480 AbstractCegarLoop]: Abstraction has 1571 states and 2660 transitions. [2018-09-30 20:07:28,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:07:28,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2660 transitions. [2018-09-30 20:07:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:07:28,484 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:28,484 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:28,485 INFO L423 AbstractCegarLoop]: === Iteration 37 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:28,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:28,485 INFO L82 PathProgramCache]: Analyzing trace with hash -497943192, now seen corresponding path program 1 times [2018-09-30 20:07:28,485 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:28,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:28,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:28,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:28,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:28,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:28,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:28,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:28,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-30 20:07:28,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:28,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2018-09-30 20:07:28,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:07:28,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:07:28,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:07:28,697 INFO L87 Difference]: Start difference. First operand 1571 states and 2660 transitions. Second operand 15 states. [2018-09-30 20:07:32,361 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 20 [2018-09-30 20:07:33,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:33,301 INFO L93 Difference]: Finished difference Result 4461 states and 7467 transitions. [2018-09-30 20:07:33,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 20:07:33,302 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-30 20:07:33,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:33,332 INFO L225 Difference]: With dead ends: 4461 [2018-09-30 20:07:33,332 INFO L226 Difference]: Without dead ends: 2887 [2018-09-30 20:07:33,338 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2031 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1321, Invalid=5159, Unknown=0, NotChecked=0, Total=6480 [2018-09-30 20:07:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2018-09-30 20:07:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2284. [2018-09-30 20:07:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2018-09-30 20:07:34,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3759 transitions. [2018-09-30 20:07:34,275 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3759 transitions. Word has length 15 [2018-09-30 20:07:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:34,276 INFO L480 AbstractCegarLoop]: Abstraction has 2284 states and 3759 transitions. [2018-09-30 20:07:34,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:07:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3759 transitions. [2018-09-30 20:07:34,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:07:34,277 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:34,278 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-09-30 20:07:34,278 INFO L423 AbstractCegarLoop]: === Iteration 38 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:34,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:34,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1957708543, now seen corresponding path program 1 times [2018-09-30 20:07:34,281 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:34,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:34,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:34,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:34,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:35,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:35,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:35,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:35,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 20:07:35,674 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:35,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2018-09-30 20:07:35,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:07:35,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:07:35,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-09-30 20:07:35,675 INFO L87 Difference]: Start difference. First operand 2284 states and 3759 transitions. Second operand 16 states. [2018-09-30 20:07:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:39,554 INFO L93 Difference]: Finished difference Result 3903 states and 6372 transitions. [2018-09-30 20:07:39,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 20:07:39,554 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-09-30 20:07:39,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:39,561 INFO L225 Difference]: With dead ends: 3903 [2018-09-30 20:07:39,561 INFO L226 Difference]: Without dead ends: 3227 [2018-09-30 20:07:39,565 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2797 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1137, Invalid=6873, Unknown=0, NotChecked=0, Total=8010 [2018-09-30 20:07:39,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2018-09-30 20:07:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2428. [2018-09-30 20:07:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2018-09-30 20:07:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 4065 transitions. [2018-09-30 20:07:40,146 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 4065 transitions. Word has length 15 [2018-09-30 20:07:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:40,146 INFO L480 AbstractCegarLoop]: Abstraction has 2428 states and 4065 transitions. [2018-09-30 20:07:40,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:07:40,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 4065 transitions. [2018-09-30 20:07:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:07:40,148 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:40,148 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:40,148 INFO L423 AbstractCegarLoop]: === Iteration 39 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:40,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1386290021, now seen corresponding path program 1 times [2018-09-30 20:07:40,148 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:40,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:40,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:40,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:40,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:40,509 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:40,509 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:40,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:40,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:40,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:40,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2018-09-30 20:07:40,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:07:40,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:07:40,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:07:40,715 INFO L87 Difference]: Start difference. First operand 2428 states and 4065 transitions. Second operand 15 states. [2018-09-30 20:07:43,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:43,498 INFO L93 Difference]: Finished difference Result 5427 states and 9046 transitions. [2018-09-30 20:07:43,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 20:07:43,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-30 20:07:43,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:43,507 INFO L225 Difference]: With dead ends: 5427 [2018-09-30 20:07:43,507 INFO L226 Difference]: Without dead ends: 2851 [2018-09-30 20:07:43,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=632, Invalid=2790, Unknown=0, NotChecked=0, Total=3422 [2018-09-30 20:07:43,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2018-09-30 20:07:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2500. [2018-09-30 20:07:44,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2500 states. [2018-09-30 20:07:44,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2500 states to 2500 states and 4177 transitions. [2018-09-30 20:07:44,103 INFO L78 Accepts]: Start accepts. Automaton has 2500 states and 4177 transitions. Word has length 15 [2018-09-30 20:07:44,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:44,103 INFO L480 AbstractCegarLoop]: Abstraction has 2500 states and 4177 transitions. [2018-09-30 20:07:44,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:07:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2500 states and 4177 transitions. [2018-09-30 20:07:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-30 20:07:44,104 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:44,104 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-09-30 20:07:44,105 INFO L423 AbstractCegarLoop]: === Iteration 40 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:44,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:44,105 INFO L82 PathProgramCache]: Analyzing trace with hash -38293542, now seen corresponding path program 1 times [2018-09-30 20:07:44,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:44,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:44,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:44,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:44,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:44,264 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:44,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:44,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:44,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 20:07:44,466 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:44,466 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-09-30 20:07:44,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:07:44,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:07:44,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:07:44,467 INFO L87 Difference]: Start difference. First operand 2500 states and 4177 transitions. Second operand 15 states. [2018-09-30 20:07:46,989 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-09-30 20:07:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:47,579 INFO L93 Difference]: Finished difference Result 5837 states and 9708 transitions. [2018-09-30 20:07:47,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:07:47,580 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-09-30 20:07:47,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:47,587 INFO L225 Difference]: With dead ends: 5837 [2018-09-30 20:07:47,587 INFO L226 Difference]: Without dead ends: 3072 [2018-09-30 20:07:47,592 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=785, Invalid=3247, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 20:07:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2018-09-30 20:07:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2605. [2018-09-30 20:07:48,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2018-09-30 20:07:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4349 transitions. [2018-09-30 20:07:48,303 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4349 transitions. Word has length 15 [2018-09-30 20:07:48,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:48,304 INFO L480 AbstractCegarLoop]: Abstraction has 2605 states and 4349 transitions. [2018-09-30 20:07:48,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:07:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4349 transitions. [2018-09-30 20:07:48,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:07:48,305 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:48,305 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-09-30 20:07:48,306 INFO L423 AbstractCegarLoop]: === Iteration 41 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:48,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1793898800, now seen corresponding path program 1 times [2018-09-30 20:07:48,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:48,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:48,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:48,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:48,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 20:07:48,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:48,414 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:48,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:48,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:48,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:48,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2018-09-30 20:07:48,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:07:48,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:07:48,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-09-30 20:07:48,660 INFO L87 Difference]: Start difference. First operand 2605 states and 4349 transitions. Second operand 20 states. [2018-09-30 20:07:54,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:54,661 INFO L93 Difference]: Finished difference Result 5120 states and 8519 transitions. [2018-09-30 20:07:54,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 20:07:54,662 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 18 [2018-09-30 20:07:54,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:54,668 INFO L225 Difference]: With dead ends: 5120 [2018-09-30 20:07:54,669 INFO L226 Difference]: Without dead ends: 3342 [2018-09-30 20:07:54,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3994 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1800, Invalid=9972, Unknown=0, NotChecked=0, Total=11772 [2018-09-30 20:07:54,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2018-09-30 20:07:55,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2886. [2018-09-30 20:07:55,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2886 states. [2018-09-30 20:07:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 4822 transitions. [2018-09-30 20:07:55,513 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 4822 transitions. Word has length 18 [2018-09-30 20:07:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:55,513 INFO L480 AbstractCegarLoop]: Abstraction has 2886 states and 4822 transitions. [2018-09-30 20:07:55,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:07:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 4822 transitions. [2018-09-30 20:07:55,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:07:55,514 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:55,515 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:55,515 INFO L423 AbstractCegarLoop]: === Iteration 42 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:55,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:55,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1793897518, now seen corresponding path program 1 times [2018-09-30 20:07:55,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:55,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:55,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:55,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:55,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:55,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:55,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:55,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:55,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:55,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:07:55,881 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:07:55,881 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2018-09-30 20:07:55,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:07:55,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:07:55,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-09-30 20:07:55,882 INFO L87 Difference]: Start difference. First operand 2886 states and 4822 transitions. Second operand 16 states. [2018-09-30 20:07:58,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:07:58,901 INFO L93 Difference]: Finished difference Result 3487 states and 5852 transitions. [2018-09-30 20:07:58,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 20:07:58,901 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-30 20:07:58,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:07:58,908 INFO L225 Difference]: With dead ends: 3487 [2018-09-30 20:07:58,909 INFO L226 Difference]: Without dead ends: 3485 [2018-09-30 20:07:58,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1229 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=616, Invalid=3544, Unknown=0, NotChecked=0, Total=4160 [2018-09-30 20:07:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2018-09-30 20:07:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 2999. [2018-09-30 20:07:59,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2018-09-30 20:07:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 5026 transitions. [2018-09-30 20:07:59,703 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 5026 transitions. Word has length 18 [2018-09-30 20:07:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:07:59,703 INFO L480 AbstractCegarLoop]: Abstraction has 2999 states and 5026 transitions. [2018-09-30 20:07:59,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:07:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 5026 transitions. [2018-09-30 20:07:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:07:59,705 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:07:59,705 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:07:59,705 INFO L423 AbstractCegarLoop]: === Iteration 43 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:07:59,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:07:59,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1785310631, now seen corresponding path program 1 times [2018-09-30 20:07:59,705 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:07:59,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:07:59,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:59,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:59,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:07:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:07:59,898 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:07:59,898 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:07:59,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:07:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:07:59,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:07:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:08:00,017 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:00,018 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2018-09-30 20:08:00,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:08:00,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:08:00,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:08:00,018 INFO L87 Difference]: Start difference. First operand 2999 states and 5026 transitions. Second operand 15 states. [2018-09-30 20:08:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:03,154 INFO L93 Difference]: Finished difference Result 3557 states and 5973 transitions. [2018-09-30 20:08:03,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 20:08:03,154 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2018-09-30 20:08:03,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:03,160 INFO L225 Difference]: With dead ends: 3557 [2018-09-30 20:08:03,160 INFO L226 Difference]: Without dead ends: 3555 [2018-09-30 20:08:03,162 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=674, Invalid=3486, Unknown=0, NotChecked=0, Total=4160 [2018-09-30 20:08:03,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2018-09-30 20:08:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3102. [2018-09-30 20:08:03,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3102 states. [2018-09-30 20:08:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3102 states to 3102 states and 5194 transitions. [2018-09-30 20:08:03,920 INFO L78 Accepts]: Start accepts. Automaton has 3102 states and 5194 transitions. Word has length 18 [2018-09-30 20:08:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:03,920 INFO L480 AbstractCegarLoop]: Abstraction has 3102 states and 5194 transitions. [2018-09-30 20:08:03,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:08:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3102 states and 5194 transitions. [2018-09-30 20:08:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:03,922 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:03,922 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:03,922 INFO L423 AbstractCegarLoop]: === Iteration 44 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:03,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:03,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1256757274, now seen corresponding path program 2 times [2018-09-30 20:08:03,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:03,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:03,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:03,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:08:03,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:04,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:04,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:04,045 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:08:04,053 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:08:04,054 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:08:04,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:04,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:04,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2018-09-30 20:08:04,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:08:04,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:08:04,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2018-09-30 20:08:04,200 INFO L87 Difference]: Start difference. First operand 3102 states and 5194 transitions. Second operand 18 states. [2018-09-30 20:08:12,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:12,551 INFO L93 Difference]: Finished difference Result 5252 states and 8823 transitions. [2018-09-30 20:08:12,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-09-30 20:08:12,556 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-30 20:08:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:12,562 INFO L225 Difference]: With dead ends: 5252 [2018-09-30 20:08:12,563 INFO L226 Difference]: Without dead ends: 5250 [2018-09-30 20:08:12,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7869 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2825, Invalid=16915, Unknown=0, NotChecked=0, Total=19740 [2018-09-30 20:08:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2018-09-30 20:08:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 3515. [2018-09-30 20:08:13,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3515 states. [2018-09-30 20:08:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3515 states to 3515 states and 5926 transitions. [2018-09-30 20:08:13,389 INFO L78 Accepts]: Start accepts. Automaton has 3515 states and 5926 transitions. Word has length 18 [2018-09-30 20:08:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:13,389 INFO L480 AbstractCegarLoop]: Abstraction has 3515 states and 5926 transitions. [2018-09-30 20:08:13,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:08:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3515 states and 5926 transitions. [2018-09-30 20:08:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:13,390 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:13,390 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:13,390 INFO L423 AbstractCegarLoop]: === Iteration 45 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:13,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:13,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1248170387, now seen corresponding path program 2 times [2018-09-30 20:08:13,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:13,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:13,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:13,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:08:13,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:13,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:13,611 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:13,620 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:08:13,628 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:08:13,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:08:13,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:13,758 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:13,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-09-30 20:08:13,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:08:13,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:08:13,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2018-09-30 20:08:13,759 INFO L87 Difference]: Start difference. First operand 3515 states and 5926 transitions. Second operand 18 states. [2018-09-30 20:08:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:21,799 INFO L93 Difference]: Finished difference Result 4843 states and 8107 transitions. [2018-09-30 20:08:21,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 20:08:21,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-30 20:08:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:21,804 INFO L225 Difference]: With dead ends: 4843 [2018-09-30 20:08:21,804 INFO L226 Difference]: Without dead ends: 4841 [2018-09-30 20:08:21,806 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6131 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2645, Invalid=12855, Unknown=0, NotChecked=0, Total=15500 [2018-09-30 20:08:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2018-09-30 20:08:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 3405. [2018-09-30 20:08:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3405 states. [2018-09-30 20:08:22,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3405 states to 3405 states and 5721 transitions. [2018-09-30 20:08:22,650 INFO L78 Accepts]: Start accepts. Automaton has 3405 states and 5721 transitions. Word has length 18 [2018-09-30 20:08:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:22,650 INFO L480 AbstractCegarLoop]: Abstraction has 3405 states and 5721 transitions. [2018-09-30 20:08:22,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:08:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3405 states and 5721 transitions. [2018-09-30 20:08:22,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:22,652 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:22,652 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:22,652 INFO L423 AbstractCegarLoop]: === Iteration 46 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:22,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:22,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1231339551, now seen corresponding path program 2 times [2018-09-30 20:08:22,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:22,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:22,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:22,653 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:08:22,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:22,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:22,798 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:22,798 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:22,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:08:22,813 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:08:22,813 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:08:22,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-30 20:08:22,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:22,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2018-09-30 20:08:22,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:08:22,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:08:22,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-09-30 20:08:22,895 INFO L87 Difference]: Start difference. First operand 3405 states and 5721 transitions. Second operand 16 states. [2018-09-30 20:08:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:25,596 INFO L93 Difference]: Finished difference Result 5774 states and 9598 transitions. [2018-09-30 20:08:25,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 20:08:25,596 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-30 20:08:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:25,600 INFO L225 Difference]: With dead ends: 5774 [2018-09-30 20:08:25,600 INFO L226 Difference]: Without dead ends: 3100 [2018-09-30 20:08:25,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=695, Invalid=2385, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 20:08:25,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2018-09-30 20:08:26,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2583. [2018-09-30 20:08:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2583 states. [2018-09-30 20:08:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4270 transitions. [2018-09-30 20:08:26,235 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4270 transitions. Word has length 18 [2018-09-30 20:08:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:26,235 INFO L480 AbstractCegarLoop]: Abstraction has 2583 states and 4270 transitions. [2018-09-30 20:08:26,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:08:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4270 transitions. [2018-09-30 20:08:26,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:26,236 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:26,236 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:26,237 INFO L423 AbstractCegarLoop]: === Iteration 47 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:26,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:26,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1890837259, now seen corresponding path program 1 times [2018-09-30 20:08:26,237 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:26,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:26,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:26,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:08:26,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:26,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:26,333 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:26,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:08:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:26,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:08:26,454 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:26,454 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2018-09-30 20:08:26,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:08:26,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:08:26,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:08:26,455 INFO L87 Difference]: Start difference. First operand 2583 states and 4270 transitions. Second operand 15 states. [2018-09-30 20:08:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:28,981 INFO L93 Difference]: Finished difference Result 3114 states and 5123 transitions. [2018-09-30 20:08:28,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 20:08:28,982 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2018-09-30 20:08:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:28,985 INFO L225 Difference]: With dead ends: 3114 [2018-09-30 20:08:28,985 INFO L226 Difference]: Without dead ends: 3112 [2018-09-30 20:08:28,986 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=409, Invalid=1847, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 20:08:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2018-09-30 20:08:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 2773. [2018-09-30 20:08:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2773 states. [2018-09-30 20:08:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 4589 transitions. [2018-09-30 20:08:29,737 INFO L78 Accepts]: Start accepts. Automaton has 2773 states and 4589 transitions. Word has length 18 [2018-09-30 20:08:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:29,737 INFO L480 AbstractCegarLoop]: Abstraction has 2773 states and 4589 transitions. [2018-09-30 20:08:29,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:08:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2773 states and 4589 transitions. [2018-09-30 20:08:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:29,738 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:29,738 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:29,739 INFO L423 AbstractCegarLoop]: === Iteration 48 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:29,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:29,739 INFO L82 PathProgramCache]: Analyzing trace with hash 740718717, now seen corresponding path program 2 times [2018-09-30 20:08:29,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:29,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:29,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:29,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:08:29,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:29,829 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:29,829 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:29,838 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:08:29,845 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:08:29,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:08:29,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:30,001 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:30,001 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2018-09-30 20:08:30,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:08:30,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:08:30,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:08:30,002 INFO L87 Difference]: Start difference. First operand 2773 states and 4589 transitions. Second operand 17 states. [2018-09-30 20:08:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:35,528 INFO L93 Difference]: Finished difference Result 4415 states and 7404 transitions. [2018-09-30 20:08:35,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 20:08:35,528 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2018-09-30 20:08:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:35,533 INFO L225 Difference]: With dead ends: 4415 [2018-09-30 20:08:35,533 INFO L226 Difference]: Without dead ends: 4413 [2018-09-30 20:08:35,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3051 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1803, Invalid=6939, Unknown=0, NotChecked=0, Total=8742 [2018-09-30 20:08:35,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2018-09-30 20:08:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 3073. [2018-09-30 20:08:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3073 states. [2018-09-30 20:08:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 5108 transitions. [2018-09-30 20:08:36,429 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 5108 transitions. Word has length 18 [2018-09-30 20:08:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:36,430 INFO L480 AbstractCegarLoop]: Abstraction has 3073 states and 5108 transitions. [2018-09-30 20:08:36,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:08:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 5108 transitions. [2018-09-30 20:08:36,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:36,431 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:36,431 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:36,431 INFO L423 AbstractCegarLoop]: === Iteration 49 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:36,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:36,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1434281659, now seen corresponding path program 1 times [2018-09-30 20:08:36,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:36,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:36,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:36,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:08:36,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:36,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:36,545 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:36,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:08:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:36,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:36,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:36,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2018-09-30 20:08:36,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:08:36,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:08:36,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2018-09-30 20:08:36,682 INFO L87 Difference]: Start difference. First operand 3073 states and 5108 transitions. Second operand 16 states. [2018-09-30 20:08:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:40,809 INFO L93 Difference]: Finished difference Result 4429 states and 7411 transitions. [2018-09-30 20:08:40,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 20:08:40,809 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-30 20:08:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:40,814 INFO L225 Difference]: With dead ends: 4429 [2018-09-30 20:08:40,814 INFO L226 Difference]: Without dead ends: 4427 [2018-09-30 20:08:40,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1301 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2018-09-30 20:08:40,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2018-09-30 20:08:41,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 2723. [2018-09-30 20:08:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2723 states. [2018-09-30 20:08:41,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 4478 transitions. [2018-09-30 20:08:41,691 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 4478 transitions. Word has length 18 [2018-09-30 20:08:41,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:41,691 INFO L480 AbstractCegarLoop]: Abstraction has 2723 states and 4478 transitions. [2018-09-30 20:08:41,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:08:41,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 4478 transitions. [2018-09-30 20:08:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:41,692 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:41,692 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:41,692 INFO L423 AbstractCegarLoop]: === Iteration 50 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:41,692 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:41,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1483012849, now seen corresponding path program 1 times [2018-09-30 20:08:41,693 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:41,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:41,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:41,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:08:41,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:41,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:41,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:41,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:08:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:41,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:41,960 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:41,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2018-09-30 20:08:41,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:08:41,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:08:41,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2018-09-30 20:08:41,961 INFO L87 Difference]: Start difference. First operand 2723 states and 4478 transitions. Second operand 18 states. [2018-09-30 20:08:46,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:08:46,585 INFO L93 Difference]: Finished difference Result 4290 states and 7151 transitions. [2018-09-30 20:08:46,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 20:08:46,585 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-30 20:08:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:08:46,589 INFO L225 Difference]: With dead ends: 4290 [2018-09-30 20:08:46,589 INFO L226 Difference]: Without dead ends: 4288 [2018-09-30 20:08:46,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1718 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=986, Invalid=4416, Unknown=0, NotChecked=0, Total=5402 [2018-09-30 20:08:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2018-09-30 20:08:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 3364. [2018-09-30 20:08:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3364 states. [2018-09-30 20:08:47,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 5610 transitions. [2018-09-30 20:08:47,583 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 5610 transitions. Word has length 18 [2018-09-30 20:08:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:08:47,583 INFO L480 AbstractCegarLoop]: Abstraction has 3364 states and 5610 transitions. [2018-09-30 20:08:47,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:08:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 5610 transitions. [2018-09-30 20:08:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:08:47,584 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:08:47,584 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:08:47,584 INFO L423 AbstractCegarLoop]: === Iteration 51 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:08:47,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:08:47,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1851213523, now seen corresponding path program 3 times [2018-09-30 20:08:47,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:08:47,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:08:47,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:47,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:08:47,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:08:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:08:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:08:47,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:08:47,785 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:08:47,794 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:08:47,803 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-30 20:08:47,804 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:08:47,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:08:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:08:48,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:08:48,008 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2018-09-30 20:08:48,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:08:48,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:08:48,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2018-09-30 20:08:48,009 INFO L87 Difference]: Start difference. First operand 3364 states and 5610 transitions. Second operand 18 states. [2018-09-30 20:08:53,508 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-09-30 20:08:56,431 WARN L178 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2018-09-30 20:08:59,280 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-09-30 20:08:59,726 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-09-30 20:09:00,319 WARN L178 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-09-30 20:09:00,757 WARN L178 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-09-30 20:09:02,312 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2018-09-30 20:09:03,029 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2018-09-30 20:09:03,753 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2018-09-30 20:09:04,472 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2018-09-30 20:09:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:09:11,137 INFO L93 Difference]: Finished difference Result 9624 states and 16323 transitions. [2018-09-30 20:09:11,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-09-30 20:09:11,137 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-09-30 20:09:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:09:11,146 INFO L225 Difference]: With dead ends: 9624 [2018-09-30 20:09:11,146 INFO L226 Difference]: Without dead ends: 9622 [2018-09-30 20:09:11,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16036 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=6166, Invalid=32839, Unknown=1, NotChecked=0, Total=39006 [2018-09-30 20:09:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9622 states. [2018-09-30 20:09:12,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9622 to 3326. [2018-09-30 20:09:12,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3326 states. [2018-09-30 20:09:12,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 5536 transitions. [2018-09-30 20:09:12,205 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 5536 transitions. Word has length 18 [2018-09-30 20:09:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:09:12,205 INFO L480 AbstractCegarLoop]: Abstraction has 3326 states and 5536 transitions. [2018-09-30 20:09:12,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:09:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 5536 transitions. [2018-09-30 20:09:12,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:09:12,207 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:09:12,207 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:09:12,207 INFO L423 AbstractCegarLoop]: === Iteration 52 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:09:12,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:09:12,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1899944713, now seen corresponding path program 1 times [2018-09-30 20:09:12,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:09:12,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:09:12,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:12,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:09:12,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:09:12,300 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:09:12,300 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:09:12,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:12,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:09:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:09:12,432 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:09:12,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-09-30 20:09:12,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:09:12,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:09:12,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:09:12,433 INFO L87 Difference]: Start difference. First operand 3326 states and 5536 transitions. Second operand 17 states. [2018-09-30 20:09:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:09:18,238 INFO L93 Difference]: Finished difference Result 5572 states and 9460 transitions. [2018-09-30 20:09:18,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 20:09:18,239 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2018-09-30 20:09:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:09:18,245 INFO L225 Difference]: With dead ends: 5572 [2018-09-30 20:09:18,245 INFO L226 Difference]: Without dead ends: 5570 [2018-09-30 20:09:18,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2783 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1511, Invalid=7045, Unknown=0, NotChecked=0, Total=8556 [2018-09-30 20:09:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2018-09-30 20:09:19,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 3526. [2018-09-30 20:09:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3526 states. [2018-09-30 20:09:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3526 states to 3526 states and 5899 transitions. [2018-09-30 20:09:19,495 INFO L78 Accepts]: Start accepts. Automaton has 3526 states and 5899 transitions. Word has length 18 [2018-09-30 20:09:19,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:09:19,495 INFO L480 AbstractCegarLoop]: Abstraction has 3526 states and 5899 transitions. [2018-09-30 20:09:19,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:09:19,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3526 states and 5899 transitions. [2018-09-30 20:09:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 20:09:19,497 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:09:19,497 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:09:19,497 INFO L423 AbstractCegarLoop]: === Iteration 53 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:09:19,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:09:19,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1150743797, now seen corresponding path program 2 times [2018-09-30 20:09:19,497 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:09:19,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:09:19,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:19,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:19,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:09:19,784 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:09:19,784 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:09:19,792 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:09:19,800 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:09:19,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:09:19,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:09:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:09:19,914 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:09:19,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2018-09-30 20:09:19,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:09:19,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:09:19,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:09:19,915 INFO L87 Difference]: Start difference. First operand 3526 states and 5899 transitions. Second operand 17 states. [2018-09-30 20:09:24,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:09:24,373 INFO L93 Difference]: Finished difference Result 4458 states and 7480 transitions. [2018-09-30 20:09:24,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 20:09:24,373 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2018-09-30 20:09:24,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:09:24,378 INFO L225 Difference]: With dead ends: 4458 [2018-09-30 20:09:24,378 INFO L226 Difference]: Without dead ends: 4456 [2018-09-30 20:09:24,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=904, Invalid=5258, Unknown=0, NotChecked=0, Total=6162 [2018-09-30 20:09:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4456 states. [2018-09-30 20:09:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4456 to 3633. [2018-09-30 20:09:25,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3633 states. [2018-09-30 20:09:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 6081 transitions. [2018-09-30 20:09:25,711 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 6081 transitions. Word has length 18 [2018-09-30 20:09:25,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:09:25,711 INFO L480 AbstractCegarLoop]: Abstraction has 3633 states and 6081 transitions. [2018-09-30 20:09:25,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:09:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 6081 transitions. [2018-09-30 20:09:25,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-30 20:09:25,712 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:09:25,712 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:09:25,713 INFO L423 AbstractCegarLoop]: === Iteration 54 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:09:25,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:09:25,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1665373557, now seen corresponding path program 1 times [2018-09-30 20:09:25,713 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:09:25,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:09:25,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:25,714 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:09:25,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:09:25,857 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:09:25,857 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:09:25,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:25,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:09:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:09:26,744 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:09:26,744 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2018-09-30 20:09:26,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 20:09:26,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 20:09:26,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2018-09-30 20:09:26,745 INFO L87 Difference]: Start difference. First operand 3633 states and 6081 transitions. Second operand 21 states. [2018-09-30 20:09:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:09:30,916 INFO L93 Difference]: Finished difference Result 4389 states and 7355 transitions. [2018-09-30 20:09:30,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 20:09:30,916 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2018-09-30 20:09:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:09:30,921 INFO L225 Difference]: With dead ends: 4389 [2018-09-30 20:09:30,921 INFO L226 Difference]: Without dead ends: 4376 [2018-09-30 20:09:30,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=725, Invalid=3181, Unknown=0, NotChecked=0, Total=3906 [2018-09-30 20:09:30,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4376 states. [2018-09-30 20:09:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4376 to 4152. [2018-09-30 20:09:32,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4152 states. [2018-09-30 20:09:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4152 states to 4152 states and 6931 transitions. [2018-09-30 20:09:32,401 INFO L78 Accepts]: Start accepts. Automaton has 4152 states and 6931 transitions. Word has length 19 [2018-09-30 20:09:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:09:32,401 INFO L480 AbstractCegarLoop]: Abstraction has 4152 states and 6931 transitions. [2018-09-30 20:09:32,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 20:09:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4152 states and 6931 transitions. [2018-09-30 20:09:32,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-30 20:09:32,402 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:09:32,402 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:09:32,403 INFO L423 AbstractCegarLoop]: === Iteration 55 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:09:32,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:09:32,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1271169050, now seen corresponding path program 1 times [2018-09-30 20:09:32,403 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:09:32,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:09:32,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:32,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:32,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:09:32,513 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:09:32,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:09:32,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:32,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:09:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:09:32,675 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:09:32,675 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2018-09-30 20:09:32,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 20:09:32,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 20:09:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2018-09-30 20:09:32,676 INFO L87 Difference]: Start difference. First operand 4152 states and 6931 transitions. Second operand 19 states. [2018-09-30 20:09:40,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:09:40,355 INFO L93 Difference]: Finished difference Result 7602 states and 12857 transitions. [2018-09-30 20:09:40,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 20:09:40,356 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19 [2018-09-30 20:09:40,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:09:40,363 INFO L225 Difference]: With dead ends: 7602 [2018-09-30 20:09:40,363 INFO L226 Difference]: Without dead ends: 7553 [2018-09-30 20:09:40,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1106, Invalid=4006, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 20:09:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2018-09-30 20:09:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 5765. [2018-09-30 20:09:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5765 states. [2018-09-30 20:09:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5765 states to 5765 states and 9725 transitions. [2018-09-30 20:09:42,738 INFO L78 Accepts]: Start accepts. Automaton has 5765 states and 9725 transitions. Word has length 19 [2018-09-30 20:09:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:09:42,738 INFO L480 AbstractCegarLoop]: Abstraction has 5765 states and 9725 transitions. [2018-09-30 20:09:42,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 20:09:42,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5765 states and 9725 transitions. [2018-09-30 20:09:42,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-30 20:09:42,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:09:42,739 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:09:42,740 INFO L423 AbstractCegarLoop]: === Iteration 56 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:09:42,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:09:42,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1231183154, now seen corresponding path program 1 times [2018-09-30 20:09:42,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:09:42,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:09:42,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:42,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:42,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:42,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:09:42,885 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:09:42,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:09:42,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:42,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:09:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:09:43,022 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:09:43,022 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2018-09-30 20:09:43,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:09:43,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:09:43,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2018-09-30 20:09:43,023 INFO L87 Difference]: Start difference. First operand 5765 states and 9725 transitions. Second operand 18 states. [2018-09-30 20:09:54,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:09:54,366 INFO L93 Difference]: Finished difference Result 10730 states and 18220 transitions. [2018-09-30 20:09:54,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 20:09:54,366 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 19 [2018-09-30 20:09:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:09:54,377 INFO L225 Difference]: With dead ends: 10730 [2018-09-30 20:09:54,377 INFO L226 Difference]: Without dead ends: 10673 [2018-09-30 20:09:54,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2305 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1268, Invalid=5872, Unknown=0, NotChecked=0, Total=7140 [2018-09-30 20:09:54,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10673 states. [2018-09-30 20:09:56,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10673 to 5867. [2018-09-30 20:09:56,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5867 states. [2018-09-30 20:09:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 9873 transitions. [2018-09-30 20:09:56,957 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 9873 transitions. Word has length 19 [2018-09-30 20:09:56,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:09:56,957 INFO L480 AbstractCegarLoop]: Abstraction has 5867 states and 9873 transitions. [2018-09-30 20:09:56,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:09:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 9873 transitions. [2018-09-30 20:09:56,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 20:09:56,959 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:09:56,959 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-09-30 20:09:56,959 INFO L423 AbstractCegarLoop]: === Iteration 57 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:09:56,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:09:56,960 INFO L82 PathProgramCache]: Analyzing trace with hash -298147634, now seen corresponding path program 2 times [2018-09-30 20:09:56,960 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:09:56,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:09:56,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:56,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:09:56,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:09:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:09:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 20:09:57,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:09:57,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:09:57,176 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:09:57,184 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:09:57,185 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:09:57,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:09:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-30 20:09:57,428 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:09:57,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2018-09-30 20:09:57,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:09:57,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:09:57,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-09-30 20:09:57,429 INFO L87 Difference]: Start difference. First operand 5867 states and 9873 transitions. Second operand 20 states. [2018-09-30 20:10:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:10:02,731 INFO L93 Difference]: Finished difference Result 12951 states and 21640 transitions. [2018-09-30 20:10:02,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 20:10:02,732 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 21 [2018-09-30 20:10:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:10:02,737 INFO L225 Difference]: With dead ends: 12951 [2018-09-30 20:10:02,737 INFO L226 Difference]: Without dead ends: 7453 [2018-09-30 20:10:02,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=369, Invalid=1983, Unknown=0, NotChecked=0, Total=2352 [2018-09-30 20:10:02,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2018-09-30 20:10:05,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 6977. [2018-09-30 20:10:05,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6977 states. [2018-09-30 20:10:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 11514 transitions. [2018-09-30 20:10:05,785 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 11514 transitions. Word has length 21 [2018-09-30 20:10:05,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:10:05,785 INFO L480 AbstractCegarLoop]: Abstraction has 6977 states and 11514 transitions. [2018-09-30 20:10:05,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:10:05,785 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 11514 transitions. [2018-09-30 20:10:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 20:10:05,787 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:10:05,788 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:10:05,788 INFO L423 AbstractCegarLoop]: === Iteration 58 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:10:05,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:10:05,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1920603351, now seen corresponding path program 1 times [2018-09-30 20:10:05,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:10:05,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:10:05,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:05,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:10:05,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:10:05,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:10:05,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:10:05,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:10:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:05,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:10:06,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:10:06,034 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:10:06,034 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2018-09-30 20:10:06,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:10:06,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:10:06,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:10:06,035 INFO L87 Difference]: Start difference. First operand 6977 states and 11514 transitions. Second operand 17 states. [2018-09-30 20:10:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:10:11,599 INFO L93 Difference]: Finished difference Result 7309 states and 12055 transitions. [2018-09-30 20:10:11,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 20:10:11,600 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21 [2018-09-30 20:10:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:10:11,607 INFO L225 Difference]: With dead ends: 7309 [2018-09-30 20:10:11,607 INFO L226 Difference]: Without dead ends: 7307 [2018-09-30 20:10:11,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2018-09-30 20:10:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7307 states. [2018-09-30 20:10:14,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7307 to 6935. [2018-09-30 20:10:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6935 states. [2018-09-30 20:10:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 11445 transitions. [2018-09-30 20:10:14,646 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 11445 transitions. Word has length 21 [2018-09-30 20:10:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:10:14,646 INFO L480 AbstractCegarLoop]: Abstraction has 6935 states and 11445 transitions. [2018-09-30 20:10:14,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 20:10:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 11445 transitions. [2018-09-30 20:10:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 20:10:14,648 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:10:14,648 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:10:14,649 INFO L423 AbstractCegarLoop]: === Iteration 59 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:10:14,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:10:14,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1010297104, now seen corresponding path program 1 times [2018-09-30 20:10:14,649 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:10:14,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:10:14,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:14,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:10:14,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 20:10:14,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:10:14,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:10:14,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:10:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:14,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:10:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-30 20:10:15,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:10:15,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 21 [2018-09-30 20:10:15,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 20:10:15,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 20:10:15,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2018-09-30 20:10:15,420 INFO L87 Difference]: Start difference. First operand 6935 states and 11445 transitions. Second operand 21 states. [2018-09-30 20:10:21,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:10:21,949 INFO L93 Difference]: Finished difference Result 11330 states and 18599 transitions. [2018-09-30 20:10:21,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 20:10:21,949 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2018-09-30 20:10:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:10:21,956 INFO L225 Difference]: With dead ends: 11330 [2018-09-30 20:10:21,956 INFO L226 Difference]: Without dead ends: 7599 [2018-09-30 20:10:21,960 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 976 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=590, Invalid=3442, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 20:10:21,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2018-09-30 20:10:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 6837. [2018-09-30 20:10:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6837 states. [2018-09-30 20:10:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6837 states to 6837 states and 11276 transitions. [2018-09-30 20:10:25,070 INFO L78 Accepts]: Start accepts. Automaton has 6837 states and 11276 transitions. Word has length 21 [2018-09-30 20:10:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:10:25,070 INFO L480 AbstractCegarLoop]: Abstraction has 6837 states and 11276 transitions. [2018-09-30 20:10:25,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 20:10:25,071 INFO L276 IsEmpty]: Start isEmpty. Operand 6837 states and 11276 transitions. [2018-09-30 20:10:25,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 20:10:25,072 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:10:25,072 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:10:25,073 INFO L423 AbstractCegarLoop]: === Iteration 60 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:10:25,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:10:25,073 INFO L82 PathProgramCache]: Analyzing trace with hash -972124902, now seen corresponding path program 1 times [2018-09-30 20:10:25,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:10:25,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:10:25,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:25,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:10:25,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:10:25,185 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:10:25,185 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:10:25,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:10:25,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:25,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:10:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-09-30 20:10:25,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:10:25,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 14 [2018-09-30 20:10:25,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:10:25,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:10:25,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2018-09-30 20:10:25,301 INFO L87 Difference]: Start difference. First operand 6837 states and 11276 transitions. Second operand 15 states. [2018-09-30 20:10:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:10:29,928 INFO L93 Difference]: Finished difference Result 7136 states and 11762 transitions. [2018-09-30 20:10:29,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 20:10:29,929 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2018-09-30 20:10:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:10:29,936 INFO L225 Difference]: With dead ends: 7136 [2018-09-30 20:10:29,936 INFO L226 Difference]: Without dead ends: 7134 [2018-09-30 20:10:29,938 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2018-09-30 20:10:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2018-09-30 20:10:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 6814. [2018-09-30 20:10:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6814 states. [2018-09-30 20:10:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 11236 transitions. [2018-09-30 20:10:33,029 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 11236 transitions. Word has length 21 [2018-09-30 20:10:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:10:33,029 INFO L480 AbstractCegarLoop]: Abstraction has 6814 states and 11236 transitions. [2018-09-30 20:10:33,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:10:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 11236 transitions. [2018-09-30 20:10:33,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 20:10:33,031 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:10:33,031 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2018-09-30 20:10:33,031 INFO L423 AbstractCegarLoop]: === Iteration 61 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:10:33,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:10:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1513598179, now seen corresponding path program 4 times [2018-09-30 20:10:33,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:10:33,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:10:33,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:33,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:10:33,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:10:33,316 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:10:33,316 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:10:33,324 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:10:33,331 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:10:33,332 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:10:33,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:10:33,568 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 20:10:33,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:10:33,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2018-09-30 20:10:33,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:10:33,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:10:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2018-09-30 20:10:33,589 INFO L87 Difference]: Start difference. First operand 6814 states and 11236 transitions. Second operand 20 states. [2018-09-30 20:10:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:10:46,296 INFO L93 Difference]: Finished difference Result 19394 states and 31307 transitions. [2018-09-30 20:10:46,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-09-30 20:10:46,297 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 21 [2018-09-30 20:10:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:10:46,309 INFO L225 Difference]: With dead ends: 19394 [2018-09-30 20:10:46,309 INFO L226 Difference]: Without dead ends: 12053 [2018-09-30 20:10:46,316 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2115, Invalid=16245, Unknown=0, NotChecked=0, Total=18360 [2018-09-30 20:10:46,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12053 states. [2018-09-30 20:10:50,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12053 to 9291. [2018-09-30 20:10:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9291 states. [2018-09-30 20:10:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 15178 transitions. [2018-09-30 20:10:50,743 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 15178 transitions. Word has length 21 [2018-09-30 20:10:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:10:50,743 INFO L480 AbstractCegarLoop]: Abstraction has 9291 states and 15178 transitions. [2018-09-30 20:10:50,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:10:50,743 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 15178 transitions. [2018-09-30 20:10:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-30 20:10:50,745 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:10:50,745 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 20:10:50,746 INFO L423 AbstractCegarLoop]: === Iteration 62 === [productErr1ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:10:50,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 20:10:50,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1688920231, now seen corresponding path program 1 times [2018-09-30 20:10:50,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:10:50,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:10:50,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:50,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:10:50,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:10:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:10:50,847 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:10:50,847 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:10:50,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:10:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:10:50,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:10:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:10:50,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:10:50,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2018-09-30 20:10:50,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 20:10:50,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 20:10:50,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-09-30 20:10:50,972 INFO L87 Difference]: Start difference. First operand 9291 states and 15178 transitions. Second operand 17 states. Received shutdown request... [2018-09-30 20:10:53,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 20:10:53,049 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 20:10:53,054 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 20:10:53,054 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 08:10:53 BoogieIcfgContainer [2018-09-30 20:10:53,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 20:10:53,055 INFO L168 Benchmark]: Toolchain (without parser) took 254724.10 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: -998.4 MB). Peak memory consumption was 995.0 MB. Max. memory is 7.1 GB. [2018-09-30 20:10:53,056 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:10:53,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:10:53,057 INFO L168 Benchmark]: Boogie Preprocessor took 21.84 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:10:53,057 INFO L168 Benchmark]: RCFGBuilder took 443.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:10:53,058 INFO L168 Benchmark]: TraceAbstraction took 254211.15 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 973.8 MB. Max. memory is 7.1 GB. [2018-09-30 20:10:53,060 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.08 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.84 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 443.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254211.15 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.0 GB). Peak memory consumption was 973.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 58). Cancelled while BasicCegarLoop was constructing difference of abstraction (9291states) and FLOYD_HOARE automaton (currently 40 states, 17 states before enhancement), while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 51 known predicates. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 69). Cancelled while BasicCegarLoop was constructing difference of abstraction (9291states) and FLOYD_HOARE automaton (currently 40 states, 17 states before enhancement), while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 51 known predicates. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (9291states) and FLOYD_HOARE automaton (currently 40 states, 17 states before enhancement), while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 51 known predicates. - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while BasicCegarLoop was constructing difference of abstraction (9291states) and FLOYD_HOARE automaton (currently 40 states, 17 states before enhancement), while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 51 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. TIMEOUT Result, 254.1s OverallTime, 62 OverallIterations, 4 TraceHistogramMax, 192.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2169 SDtfs, 10967 SDslu, 7176 SDs, 0 SdLazy, 57782 SolverSat, 7479 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 56.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3401 GetRequests, 527 SyntacticMatches, 21 SemanticMatches, 2852 ConstructedPredicates, 0 IntricatePredicates, 8 DeprecatedPredicates, 76335 ImplicationChecksByTransitivity, 79.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9291occurred in iteration=61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 41.3s AutomataMinimizationTime, 61 MinimizatonAttempts, 35849 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 1636 NumberOfCodeBlocks, 1636 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 1520 ConstructedInterpolants, 92 QuantifiedInterpolants, 150568 SizeOfPredicates, 241 NumberOfNonLiveVariables, 2472 ConjunctsInSsa, 520 ConjunctsInUnsatCore, 116 InterpolantComputations, 9 PerfectInterpolantSequences, 203/944 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithoutIf.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-10-53-070.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithoutIf.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_20-10-53-070.csv Completed graceful shutdown