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_PUPT.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b2fde6a [2018-09-28 10:24:06,300 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-28 10:24:06,302 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-28 10:24:06,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-28 10:24:06,320 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-28 10:24:06,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-28 10:24:06,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-28 10:24:06,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-28 10:24:06,328 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-28 10:24:06,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-28 10:24:06,336 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-28 10:24:06,336 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-28 10:24:06,337 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-28 10:24:06,338 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-28 10:24:06,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-28 10:24:06,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-28 10:24:06,343 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-28 10:24:06,348 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-28 10:24:06,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-28 10:24:06,356 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-28 10:24:06,357 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-28 10:24:06,359 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-28 10:24:06,361 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-28 10:24:06,369 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-28 10:24:06,391 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-28 10:24:06,391 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-28 10:24:06,392 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-28 10:24:06,392 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-28 10:24:06,393 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-28 10:24:06,393 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-28 10:24:06,394 INFO L133 SettingsManager]: * Use SBE=true [2018-09-28 10:24:06,394 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-28 10:24:06,394 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-28 10:24:06,394 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-28 10:24:06,395 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-28 10:24:06,395 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-28 10:24:06,395 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-28 10:24:06,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-28 10:24:06,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-28 10:24:06,396 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-28 10:24:06,397 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-28 10:24:06,397 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-28 10:24:06,397 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-28 10:24:06,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-28 10:24:06,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-28 10:24:06,398 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-28 10:24:06,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-28 10:24:06,398 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-28 10:24:06,398 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-28 10:24:06,398 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-28 10:24:06,400 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-28 10:24:06,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-28 10:24:06,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-28 10:24:06,400 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-28 10:24:06,400 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-28 10:24:06,452 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-28 10:24:06,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-28 10:24:06,475 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-28 10:24:06,476 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-28 10:24:06,477 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-28 10:24:06,478 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl [2018-09-28 10:24:06,478 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl' [2018-09-28 10:24:06,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-28 10:24:06,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-28 10:24:06,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-28 10:24:06,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-28 10:24:06,538 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-28 10:24:06,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,577 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-28 10:24:06,578 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-28 10:24:06,578 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-28 10:24:06,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-28 10:24:06,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-28 10:24:06,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-28 10:24:06,581 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-28 10:24:06,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/1) ... [2018-09-28 10:24:06,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-28 10:24:06,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-28 10:24:06,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-28 10:24:06,603 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-28 10:24:06,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (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 [2018-09-28 10:24:06,682 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-09-28 10:24:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-09-28 10:24:06,683 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-09-28 10:24:07,178 INFO L350 CfgBuilder]: Using library mode [2018-09-28 10:24:07,179 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:24:07 BoogieIcfgContainer [2018-09-28 10:24:07,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-28 10:24:07,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-28 10:24:07,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-28 10:24:07,184 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-28 10:24:07,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 28.09 10:24:06" (1/2) ... [2018-09-28 10:24:07,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247182b1 and model type threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.09 10:24:07, skipping insertion in model container [2018-09-28 10:24:07,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.09 10:24:07" (2/2) ... [2018-09-28 10:24:07,187 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product.bpl [2018-09-28 10:24:07,197 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-28 10:24:07,206 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-09-28 10:24:07,254 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-28 10:24:07,254 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-28 10:24:07,255 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-28 10:24:07,255 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-28 10:24:07,255 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-28 10:24:07,255 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-28 10:24:07,255 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-28 10:24:07,255 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-28 10:24:07,255 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-28 10:24:07,268 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-28 10:24:07,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-28 10:24:07,275 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:07,276 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-28 10:24:07,277 INFO L423 AbstractCegarLoop]: === Iteration 1 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:07,283 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:07,284 INFO L82 PathProgramCache]: Analyzing trace with hash 28755683, now seen corresponding path program 1 times [2018-09-28 10:24:07,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:07,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:07,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:07,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:07,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:07,475 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:24:07,475 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-28 10:24:07,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-28 10:24:07,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-28 10:24:07,497 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:07,499 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2018-09-28 10:24:09,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:09,262 INFO L93 Difference]: Finished difference Result 49 states and 85 transitions. [2018-09-28 10:24:09,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-28 10:24:09,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-09-28 10:24:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:09,281 INFO L225 Difference]: With dead ends: 49 [2018-09-28 10:24:09,282 INFO L226 Difference]: Without dead ends: 47 [2018-09-28 10:24:09,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-28 10:24:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2018-09-28 10:24:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-28 10:24:09,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2018-09-28 10:24:09,328 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 5 [2018-09-28 10:24:09,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:09,328 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2018-09-28 10:24:09,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-28 10:24:09,329 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2018-09-28 10:24:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-28 10:24:09,329 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:09,330 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-28 10:24:09,330 INFO L423 AbstractCegarLoop]: === Iteration 2 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:09,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:09,331 INFO L82 PathProgramCache]: Analyzing trace with hash 28971747, now seen corresponding path program 1 times [2018-09-28 10:24:09,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:09,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:09,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:09,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:09,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:09,401 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:24:09,401 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-28 10:24:09,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-28 10:24:09,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-28 10:24:09,404 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:09,404 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 5 states. [2018-09-28 10:24:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:10,148 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2018-09-28 10:24:10,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-28 10:24:10,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-09-28 10:24:10,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:10,150 INFO L225 Difference]: With dead ends: 57 [2018-09-28 10:24:10,151 INFO L226 Difference]: Without dead ends: 55 [2018-09-28 10:24:10,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-28 10:24:10,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2018-09-28 10:24:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-28 10:24:10,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 63 transitions. [2018-09-28 10:24:10,161 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 63 transitions. Word has length 5 [2018-09-28 10:24:10,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:10,161 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 63 transitions. [2018-09-28 10:24:10,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-28 10:24:10,162 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 63 transitions. [2018-09-28 10:24:10,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-28 10:24:10,163 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:10,163 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:10,163 INFO L423 AbstractCegarLoop]: === Iteration 3 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:10,164 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:10,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1864688358, now seen corresponding path program 1 times [2018-09-28 10:24:10,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:10,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:10,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:10,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:10,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:10,302 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:24:10,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-28 10:24:10,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-28 10:24:10,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-28 10:24:10,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:10,303 INFO L87 Difference]: Start difference. First operand 38 states and 63 transitions. Second operand 7 states. [2018-09-28 10:24:11,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:11,881 INFO L93 Difference]: Finished difference Result 84 states and 147 transitions. [2018-09-28 10:24:11,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-28 10:24:11,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-28 10:24:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:11,884 INFO L225 Difference]: With dead ends: 84 [2018-09-28 10:24:11,884 INFO L226 Difference]: Without dead ends: 82 [2018-09-28 10:24:11,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-09-28 10:24:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 51. [2018-09-28 10:24:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-28 10:24:11,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 86 transitions. [2018-09-28 10:24:11,898 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 86 transitions. Word has length 7 [2018-09-28 10:24:11,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:11,898 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 86 transitions. [2018-09-28 10:24:11,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-28 10:24:11,899 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 86 transitions. [2018-09-28 10:24:11,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-28 10:24:11,900 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:11,900 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-09-28 10:24:11,900 INFO L423 AbstractCegarLoop]: === Iteration 4 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:11,901 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:11,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1865765160, now seen corresponding path program 1 times [2018-09-28 10:24:11,901 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:11,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:11,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:11,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:11,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:12,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:12,031 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 [2018-09-28 10:24:12,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:12,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:12,427 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:24:12,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 8 [2018-09-28 10:24:12,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-28 10:24:12,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-28 10:24:12,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:12,429 INFO L87 Difference]: Start difference. First operand 51 states and 86 transitions. Second operand 9 states. [2018-09-28 10:24:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:15,156 INFO L93 Difference]: Finished difference Result 142 states and 245 transitions. [2018-09-28 10:24:15,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:24:15,157 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 7 [2018-09-28 10:24:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:15,159 INFO L225 Difference]: With dead ends: 142 [2018-09-28 10:24:15,159 INFO L226 Difference]: Without dead ends: 108 [2018-09-28 10:24:15,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:15,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-09-28 10:24:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 73. [2018-09-28 10:24:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-09-28 10:24:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 120 transitions. [2018-09-28 10:24:15,176 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 120 transitions. Word has length 7 [2018-09-28 10:24:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:15,176 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 120 transitions. [2018-09-28 10:24:15,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-28 10:24:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 120 transitions. [2018-09-28 10:24:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-09-28 10:24:15,177 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:15,177 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:15,178 INFO L423 AbstractCegarLoop]: === Iteration 5 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:15,178 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:15,178 INFO L82 PathProgramCache]: Analyzing trace with hash 964893579, now seen corresponding path program 1 times [2018-09-28 10:24:15,178 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:15,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:15,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:15,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:15,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:15,323 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:15,323 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 [2018-09-28 10:24:15,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:15,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:15,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:15,440 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:24:15,440 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 10 [2018-09-28 10:24:15,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-28 10:24:15,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-28 10:24:15,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:15,441 INFO L87 Difference]: Start difference. First operand 73 states and 120 transitions. Second operand 11 states. [2018-09-28 10:24:18,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:18,142 INFO L93 Difference]: Finished difference Result 148 states and 240 transitions. [2018-09-28 10:24:18,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:24:18,142 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2018-09-28 10:24:18,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:18,144 INFO L225 Difference]: With dead ends: 148 [2018-09-28 10:24:18,145 INFO L226 Difference]: Without dead ends: 97 [2018-09-28 10:24:18,145 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:18,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-28 10:24:18,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 78. [2018-09-28 10:24:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-09-28 10:24:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 119 transitions. [2018-09-28 10:24:18,161 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 119 transitions. Word has length 9 [2018-09-28 10:24:18,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:18,162 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-09-28 10:24:18,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-28 10:24:18,162 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 119 transitions. [2018-09-28 10:24:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:18,163 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:18,163 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:18,163 INFO L423 AbstractCegarLoop]: === Iteration 6 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:18,164 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash 101966393, now seen corresponding path program 1 times [2018-09-28 10:24:18,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:18,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:18,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:18,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:18,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:18,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:18,264 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:18,264 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:18,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:18,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:18,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:18,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-28 10:24:18,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:24:18,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:24:18,401 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:18,401 INFO L87 Difference]: Start difference. First operand 78 states and 119 transitions. Second operand 14 states. [2018-09-28 10:24:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:20,925 INFO L93 Difference]: Finished difference Result 124 states and 193 transitions. [2018-09-28 10:24:20,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:24:20,926 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 10 [2018-09-28 10:24:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:20,927 INFO L225 Difference]: With dead ends: 124 [2018-09-28 10:24:20,928 INFO L226 Difference]: Without dead ends: 123 [2018-09-28 10:24:20,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:20,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-28 10:24:20,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 107. [2018-09-28 10:24:20,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-28 10:24:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 173 transitions. [2018-09-28 10:24:20,951 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 173 transitions. Word has length 10 [2018-09-28 10:24:20,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:20,951 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 173 transitions. [2018-09-28 10:24:20,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:24:20,952 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 173 transitions. [2018-09-28 10:24:20,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:20,953 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:20,953 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:20,953 INFO L423 AbstractCegarLoop]: === Iteration 7 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:20,953 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:20,954 INFO L82 PathProgramCache]: Analyzing trace with hash 103259259, now seen corresponding path program 1 times [2018-09-28 10:24:20,954 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:20,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:20,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:20,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:20,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:21,042 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:24:21,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-28 10:24:21,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:24:21,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:24:21,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:21,044 INFO L87 Difference]: Start difference. First operand 107 states and 173 transitions. Second operand 8 states. [2018-09-28 10:24:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:22,403 INFO L93 Difference]: Finished difference Result 132 states and 203 transitions. [2018-09-28 10:24:22,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:24:22,412 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2018-09-28 10:24:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:22,414 INFO L225 Difference]: With dead ends: 132 [2018-09-28 10:24:22,414 INFO L226 Difference]: Without dead ends: 130 [2018-09-28 10:24:22,414 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-09-28 10:24:22,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2018-09-28 10:24:22,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-09-28 10:24:22,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 196 transitions. [2018-09-28 10:24:22,436 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 196 transitions. Word has length 10 [2018-09-28 10:24:22,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:22,436 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 196 transitions. [2018-09-28 10:24:22,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:24:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 196 transitions. [2018-09-28 10:24:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:22,438 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:22,438 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:22,438 INFO L423 AbstractCegarLoop]: === Iteration 8 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:22,438 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:22,439 INFO L82 PathProgramCache]: Analyzing trace with hash -176034144, now seen corresponding path program 1 times [2018-09-28 10:24:22,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:22,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:22,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:22,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:22,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:22,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:22,535 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 [2018-09-28 10:24:22,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:22,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:23,020 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:23,021 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2018-09-28 10:24:23,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:24:23,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:24:23,022 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:23,022 INFO L87 Difference]: Start difference. First operand 121 states and 196 transitions. Second operand 14 states. [2018-09-28 10:24:26,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:26,547 INFO L93 Difference]: Finished difference Result 162 states and 262 transitions. [2018-09-28 10:24:26,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-28 10:24:26,547 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 10 [2018-09-28 10:24:26,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:26,549 INFO L225 Difference]: With dead ends: 162 [2018-09-28 10:24:26,549 INFO L226 Difference]: Without dead ends: 160 [2018-09-28 10:24:26,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:26,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-09-28 10:24:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 129. [2018-09-28 10:24:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-09-28 10:24:26,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 209 transitions. [2018-09-28 10:24:26,575 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 209 transitions. Word has length 10 [2018-09-28 10:24:26,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:26,575 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 209 transitions. [2018-09-28 10:24:26,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:24:26,576 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 209 transitions. [2018-09-28 10:24:26,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:26,577 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:26,577 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:26,577 INFO L423 AbstractCegarLoop]: === Iteration 9 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:26,578 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:26,578 INFO L82 PathProgramCache]: Analyzing trace with hash -176034432, now seen corresponding path program 1 times [2018-09-28 10:24:26,578 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:26,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:26,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:26,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:26,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:26,903 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:26,903 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 [2018-09-28 10:24:26,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:26,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:27,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:27,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2018-09-28 10:24:27,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:24:27,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:24:27,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:27,061 INFO L87 Difference]: Start difference. First operand 129 states and 209 transitions. Second operand 13 states. [2018-09-28 10:24:30,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:30,816 INFO L93 Difference]: Finished difference Result 223 states and 343 transitions. [2018-09-28 10:24:30,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:24:30,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 10 [2018-09-28 10:24:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:30,819 INFO L225 Difference]: With dead ends: 223 [2018-09-28 10:24:30,819 INFO L226 Difference]: Without dead ends: 221 [2018-09-28 10:24:30,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-09-28 10:24:30,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 167. [2018-09-28 10:24:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-28 10:24:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 274 transitions. [2018-09-28 10:24:30,845 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 274 transitions. Word has length 10 [2018-09-28 10:24:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:30,845 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 274 transitions. [2018-09-28 10:24:30,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:24:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 274 transitions. [2018-09-28 10:24:30,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:30,847 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:30,847 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:30,847 INFO L423 AbstractCegarLoop]: === Iteration 10 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:30,847 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:30,848 INFO L82 PathProgramCache]: Analyzing trace with hash -184622601, now seen corresponding path program 1 times [2018-09-28 10:24:30,848 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:30,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:30,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:30,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:30,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:30,943 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:30,943 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:24:30,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:30,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:31,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:31,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-28 10:24:31,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:24:31,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:24:31,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:31,069 INFO L87 Difference]: Start difference. First operand 167 states and 274 transitions. Second operand 14 states. [2018-09-28 10:24:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:33,429 INFO L93 Difference]: Finished difference Result 222 states and 351 transitions. [2018-09-28 10:24:33,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-28 10:24:33,430 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 10 [2018-09-28 10:24:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:33,431 INFO L225 Difference]: With dead ends: 222 [2018-09-28 10:24:33,432 INFO L226 Difference]: Without dead ends: 221 [2018-09-28 10:24:33,432 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:33,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-09-28 10:24:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 181. [2018-09-28 10:24:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-09-28 10:24:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 297 transitions. [2018-09-28 10:24:33,457 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 297 transitions. Word has length 10 [2018-09-28 10:24:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:33,457 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 297 transitions. [2018-09-28 10:24:33,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:24:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 297 transitions. [2018-09-28 10:24:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:33,461 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:33,461 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:33,462 INFO L423 AbstractCegarLoop]: === Iteration 11 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:33,462 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash -184621319, now seen corresponding path program 1 times [2018-09-28 10:24:33,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:33,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:33,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:33,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:33,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:33,552 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:24:33,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-28 10:24:33,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:24:33,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:24:33,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:33,554 INFO L87 Difference]: Start difference. First operand 181 states and 297 transitions. Second operand 8 states. [2018-09-28 10:24:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:34,586 INFO L93 Difference]: Finished difference Result 203 states and 320 transitions. [2018-09-28 10:24:34,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-28 10:24:34,588 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2018-09-28 10:24:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:34,589 INFO L225 Difference]: With dead ends: 203 [2018-09-28 10:24:34,589 INFO L226 Difference]: Without dead ends: 201 [2018-09-28 10:24:34,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-09-28 10:24:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 183. [2018-09-28 10:24:34,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-28 10:24:34,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 301 transitions. [2018-09-28 10:24:34,617 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 301 transitions. Word has length 10 [2018-09-28 10:24:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:34,617 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 301 transitions. [2018-09-28 10:24:34,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:24:34,617 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 301 transitions. [2018-09-28 10:24:34,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:34,618 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:34,618 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:34,618 INFO L423 AbstractCegarLoop]: === Iteration 12 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:34,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:34,618 INFO L82 PathProgramCache]: Analyzing trace with hash -973282432, now seen corresponding path program 1 times [2018-09-28 10:24:34,619 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:34,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:34,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:34,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:34,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:34,836 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:34,836 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 [2018-09-28 10:24:34,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:34,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:34,934 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:34,934 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-28 10:24:34,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:24:34,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:24:34,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:34,935 INFO L87 Difference]: Start difference. First operand 183 states and 301 transitions. Second operand 14 states. [2018-09-28 10:24:37,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:37,198 INFO L93 Difference]: Finished difference Result 241 states and 385 transitions. [2018-09-28 10:24:37,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-28 10:24:37,198 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 10 [2018-09-28 10:24:37,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:37,200 INFO L225 Difference]: With dead ends: 241 [2018-09-28 10:24:37,200 INFO L226 Difference]: Without dead ends: 240 [2018-09-28 10:24:37,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-09-28 10:24:37,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 202. [2018-09-28 10:24:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2018-09-28 10:24:37,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 336 transitions. [2018-09-28 10:24:37,229 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 336 transitions. Word has length 10 [2018-09-28 10:24:37,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:37,229 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 336 transitions. [2018-09-28 10:24:37,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:24:37,229 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 336 transitions. [2018-09-28 10:24:37,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:37,230 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:37,230 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:37,230 INFO L423 AbstractCegarLoop]: === Iteration 13 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:37,230 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:37,231 INFO L82 PathProgramCache]: Analyzing trace with hash -973281662, now seen corresponding path program 1 times [2018-09-28 10:24:37,231 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:37,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:37,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:37,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:37,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:37,325 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:24:37,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-28 10:24:37,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:24:37,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:24:37,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:37,326 INFO L87 Difference]: Start difference. First operand 202 states and 336 transitions. Second operand 8 states. [2018-09-28 10:24:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:38,370 INFO L93 Difference]: Finished difference Result 220 states and 353 transitions. [2018-09-28 10:24:38,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-28 10:24:38,370 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2018-09-28 10:24:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:38,372 INFO L225 Difference]: With dead ends: 220 [2018-09-28 10:24:38,372 INFO L226 Difference]: Without dead ends: 218 [2018-09-28 10:24:38,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-09-28 10:24:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 210. [2018-09-28 10:24:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-09-28 10:24:38,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 348 transitions. [2018-09-28 10:24:38,396 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 348 transitions. Word has length 10 [2018-09-28 10:24:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:38,396 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 348 transitions. [2018-09-28 10:24:38,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:24:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 348 transitions. [2018-09-28 10:24:38,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:38,397 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:38,397 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:38,398 INFO L423 AbstractCegarLoop]: === Iteration 14 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:38,398 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:38,398 INFO L82 PathProgramCache]: Analyzing trace with hash -981870601, now seen corresponding path program 1 times [2018-09-28 10:24:38,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:38,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:38,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:38,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:38,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:38,459 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:38,459 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 [2018-09-28 10:24:38,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:38,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:38,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:38,619 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:38,619 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2018-09-28 10:24:38,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:24:38,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:24:38,620 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:38,620 INFO L87 Difference]: Start difference. First operand 210 states and 348 transitions. Second operand 13 states. [2018-09-28 10:24:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:42,943 INFO L93 Difference]: Finished difference Result 320 states and 507 transitions. [2018-09-28 10:24:42,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:24:42,944 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 10 [2018-09-28 10:24:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:42,958 INFO L225 Difference]: With dead ends: 320 [2018-09-28 10:24:42,958 INFO L226 Difference]: Without dead ends: 318 [2018-09-28 10:24:42,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:42,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2018-09-28 10:24:42,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 259. [2018-09-28 10:24:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-28 10:24:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 430 transitions. [2018-09-28 10:24:42,997 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 430 transitions. Word has length 10 [2018-09-28 10:24:42,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:42,997 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 430 transitions. [2018-09-28 10:24:42,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:24:42,997 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 430 transitions. [2018-09-28 10:24:42,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:42,998 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:42,998 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:42,998 INFO L423 AbstractCegarLoop]: === Iteration 15 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:42,998 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:42,999 INFO L82 PathProgramCache]: Analyzing trace with hash -981870889, now seen corresponding path program 1 times [2018-09-28 10:24:42,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:42,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:42,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:43,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:43,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:43,076 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:43,076 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 [2018-09-28 10:24:43,089 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:43,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:43,217 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:43,217 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2018-09-28 10:24:43,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:24:43,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:24:43,218 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:43,218 INFO L87 Difference]: Start difference. First operand 259 states and 430 transitions. Second operand 14 states. [2018-09-28 10:24:44,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:44,999 INFO L93 Difference]: Finished difference Result 304 states and 503 transitions. [2018-09-28 10:24:44,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-28 10:24:44,999 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 10 [2018-09-28 10:24:44,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:45,001 INFO L225 Difference]: With dead ends: 304 [2018-09-28 10:24:45,001 INFO L226 Difference]: Without dead ends: 302 [2018-09-28 10:24:45,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:45,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2018-09-28 10:24:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 270. [2018-09-28 10:24:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-09-28 10:24:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 448 transitions. [2018-09-28 10:24:45,045 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 448 transitions. Word has length 10 [2018-09-28 10:24:45,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:45,046 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 448 transitions. [2018-09-28 10:24:45,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:24:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 448 transitions. [2018-09-28 10:24:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:45,046 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:45,047 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:45,047 INFO L423 AbstractCegarLoop]: === Iteration 16 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:45,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1101306322, now seen corresponding path program 1 times [2018-09-28 10:24:45,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:45,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:45,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:45,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:45,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:45,212 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:45,212 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 [2018-09-28 10:24:45,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:45,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:45,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:45,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-28 10:24:45,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:24:45,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:24:45,375 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:45,375 INFO L87 Difference]: Start difference. First operand 270 states and 448 transitions. Second operand 14 states. [2018-09-28 10:24:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:47,307 INFO L93 Difference]: Finished difference Result 281 states and 455 transitions. [2018-09-28 10:24:47,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:24:47,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 10 [2018-09-28 10:24:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:47,309 INFO L225 Difference]: With dead ends: 281 [2018-09-28 10:24:47,310 INFO L226 Difference]: Without dead ends: 280 [2018-09-28 10:24:47,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2018-09-28 10:24:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 270. [2018-09-28 10:24:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-09-28 10:24:47,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 447 transitions. [2018-09-28 10:24:47,354 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 447 transitions. Word has length 10 [2018-09-28 10:24:47,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:47,355 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 447 transitions. [2018-09-28 10:24:47,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:24:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 447 transitions. [2018-09-28 10:24:47,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-28 10:24:47,355 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:47,356 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:47,356 INFO L423 AbstractCegarLoop]: === Iteration 17 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:47,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:47,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1102106644, now seen corresponding path program 1 times [2018-09-28 10:24:47,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:47,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:47,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:47,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:47,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:47,813 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-28 10:24:47,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-28 10:24:47,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-28 10:24:47,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-28 10:24:47,814 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:47,814 INFO L87 Difference]: Start difference. First operand 270 states and 447 transitions. Second operand 8 states. [2018-09-28 10:24:49,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:49,207 INFO L93 Difference]: Finished difference Result 286 states and 460 transitions. [2018-09-28 10:24:49,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-28 10:24:49,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2018-09-28 10:24:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:49,213 INFO L225 Difference]: With dead ends: 286 [2018-09-28 10:24:49,213 INFO L226 Difference]: Without dead ends: 284 [2018-09-28 10:24:49,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2018-09-28 10:24:49,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 268. [2018-09-28 10:24:49,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2018-09-28 10:24:49,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 443 transitions. [2018-09-28 10:24:49,259 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 443 transitions. Word has length 10 [2018-09-28 10:24:49,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:49,259 INFO L480 AbstractCegarLoop]: Abstraction has 268 states and 443 transitions. [2018-09-28 10:24:49,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-28 10:24:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 443 transitions. [2018-09-28 10:24:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-28 10:24:49,260 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:49,260 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:49,261 INFO L423 AbstractCegarLoop]: === Iteration 18 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:49,261 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:49,261 INFO L82 PathProgramCache]: Analyzing trace with hash 240543358, now seen corresponding path program 1 times [2018-09-28 10:24:49,261 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:49,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:49,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:49,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:49,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:50,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:50,099 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:50,099 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 [2018-09-28 10:24:50,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:50,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:50,559 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:50,559 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2018-09-28 10:24:50,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:24:50,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:24:50,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:50,560 INFO L87 Difference]: Start difference. First operand 268 states and 443 transitions. Second operand 16 states. [2018-09-28 10:24:55,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:55,045 INFO L93 Difference]: Finished difference Result 515 states and 842 transitions. [2018-09-28 10:24:55,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:24:55,046 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2018-09-28 10:24:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:55,048 INFO L225 Difference]: With dead ends: 515 [2018-09-28 10:24:55,048 INFO L226 Difference]: Without dead ends: 513 [2018-09-28 10:24:55,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2018-09-28 10:24:55,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 338. [2018-09-28 10:24:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2018-09-28 10:24:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 568 transitions. [2018-09-28 10:24:55,103 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 568 transitions. Word has length 12 [2018-09-28 10:24:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:55,103 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 568 transitions. [2018-09-28 10:24:55,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:24:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 568 transitions. [2018-09-28 10:24:55,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-28 10:24:55,104 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:55,104 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:55,104 INFO L423 AbstractCegarLoop]: === Iteration 19 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:55,105 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:55,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1525011273, now seen corresponding path program 1 times [2018-09-28 10:24:55,105 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:55,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:55,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:55,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:55,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:55,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:55,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-28 10:24:55,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:55,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:24:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:55,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:24:55,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2018-09-28 10:24:55,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:24:55,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:24:55,363 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:24:55,363 INFO L87 Difference]: Start difference. First operand 338 states and 568 transitions. Second operand 16 states. [2018-09-28 10:24:59,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:24:59,735 INFO L93 Difference]: Finished difference Result 631 states and 1050 transitions. [2018-09-28 10:24:59,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-28 10:24:59,735 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2018-09-28 10:24:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:24:59,738 INFO L225 Difference]: With dead ends: 631 [2018-09-28 10:24:59,738 INFO L226 Difference]: Without dead ends: 629 [2018-09-28 10:24:59,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:24:59,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2018-09-28 10:24:59,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 403. [2018-09-28 10:24:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-09-28 10:24:59,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 685 transitions. [2018-09-28 10:24:59,826 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 685 transitions. Word has length 12 [2018-09-28 10:24:59,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:24:59,826 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 685 transitions. [2018-09-28 10:24:59,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:24:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 685 transitions. [2018-09-28 10:24:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:24:59,827 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:24:59,827 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:24:59,827 INFO L423 AbstractCegarLoop]: === Iteration 20 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:24:59,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:24:59,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1000080215, now seen corresponding path program 1 times [2018-09-28 10:24:59,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:24:59,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:24:59,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:59,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:59,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:24:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:24:59,926 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:24:59,927 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 [2018-09-28 10:24:59,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:24:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:24:59,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:00,049 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:25:00,049 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2018-09-28 10:25:00,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:25:00,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:25:00,050 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:00,050 INFO L87 Difference]: Start difference. First operand 403 states and 685 transitions. Second operand 14 states. [2018-09-28 10:25:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:06,128 INFO L93 Difference]: Finished difference Result 1330 states and 2225 transitions. [2018-09-28 10:25:06,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-28 10:25:06,128 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-09-28 10:25:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:06,132 INFO L225 Difference]: With dead ends: 1330 [2018-09-28 10:25:06,132 INFO L226 Difference]: Without dead ends: 929 [2018-09-28 10:25:06,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:06,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2018-09-28 10:25:06,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 694. [2018-09-28 10:25:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2018-09-28 10:25:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1171 transitions. [2018-09-28 10:25:06,271 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1171 transitions. Word has length 13 [2018-09-28 10:25:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:06,272 INFO L480 AbstractCegarLoop]: Abstraction has 694 states and 1171 transitions. [2018-09-28 10:25:06,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:25:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1171 transitions. [2018-09-28 10:25:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:06,273 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:06,273 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:06,273 INFO L423 AbstractCegarLoop]: === Iteration 21 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:06,273 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:06,273 INFO L82 PathProgramCache]: Analyzing trace with hash -86603521, now seen corresponding path program 1 times [2018-09-28 10:25:06,273 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:06,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:06,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:06,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:06,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:06,365 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:06,365 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 [2018-09-28 10:25:06,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:06,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:06,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:06,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-09-28 10:25:06,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:25:06,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:25:06,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:06,848 INFO L87 Difference]: Start difference. First operand 694 states and 1171 transitions. Second operand 14 states. [2018-09-28 10:25:11,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:11,593 INFO L93 Difference]: Finished difference Result 1557 states and 2604 transitions. [2018-09-28 10:25:11,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:25:11,593 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-09-28 10:25:11,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:11,596 INFO L225 Difference]: With dead ends: 1557 [2018-09-28 10:25:11,596 INFO L226 Difference]: Without dead ends: 864 [2018-09-28 10:25:11,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2018-09-28 10:25:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 741. [2018-09-28 10:25:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-09-28 10:25:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1247 transitions. [2018-09-28 10:25:11,760 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1247 transitions. Word has length 13 [2018-09-28 10:25:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:11,760 INFO L480 AbstractCegarLoop]: Abstraction has 741 states and 1247 transitions. [2018-09-28 10:25:11,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:25:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1247 transitions. [2018-09-28 10:25:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:11,761 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:11,761 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:11,762 INFO L423 AbstractCegarLoop]: === Iteration 22 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:11,762 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:11,762 INFO L82 PathProgramCache]: Analyzing trace with hash -63701769, now seen corresponding path program 1 times [2018-09-28 10:25:11,762 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:11,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:11,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:11,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:11,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:11,868 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:11,868 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 [2018-09-28 10:25:11,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:11,882 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:11,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:12,000 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:12,001 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2018-09-28 10:25:12,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:25:12,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:25:12,001 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:12,001 INFO L87 Difference]: Start difference. First operand 741 states and 1247 transitions. Second operand 13 states. [2018-09-28 10:25:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:15,168 INFO L93 Difference]: Finished difference Result 1655 states and 2757 transitions. [2018-09-28 10:25:15,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:25:15,170 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-09-28 10:25:15,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:15,173 INFO L225 Difference]: With dead ends: 1655 [2018-09-28 10:25:15,173 INFO L226 Difference]: Without dead ends: 915 [2018-09-28 10:25:15,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:15,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2018-09-28 10:25:15,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 809. [2018-09-28 10:25:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 809 states. [2018-09-28 10:25:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1353 transitions. [2018-09-28 10:25:15,318 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1353 transitions. Word has length 13 [2018-09-28 10:25:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:15,318 INFO L480 AbstractCegarLoop]: Abstraction has 809 states and 1353 transitions. [2018-09-28 10:25:15,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:25:15,319 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1353 transitions. [2018-09-28 10:25:15,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:15,319 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:15,320 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:15,320 INFO L423 AbstractCegarLoop]: === Iteration 23 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:15,320 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:15,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1761298639, now seen corresponding path program 1 times [2018-09-28 10:25:15,320 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:15,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:15,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:15,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:15,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:15,408 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:15,408 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 [2018-09-28 10:25:15,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:15,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:15,480 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:15,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-09-28 10:25:15,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-28 10:25:15,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-28 10:25:15,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:15,481 INFO L87 Difference]: Start difference. First operand 809 states and 1353 transitions. Second operand 10 states. [2018-09-28 10:25:17,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:17,615 INFO L93 Difference]: Finished difference Result 939 states and 1541 transitions. [2018-09-28 10:25:17,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-28 10:25:17,615 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-09-28 10:25:17,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:17,619 INFO L225 Difference]: With dead ends: 939 [2018-09-28 10:25:17,619 INFO L226 Difference]: Without dead ends: 937 [2018-09-28 10:25:17,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2018-09-28 10:25:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 820. [2018-09-28 10:25:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2018-09-28 10:25:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1367 transitions. [2018-09-28 10:25:17,764 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1367 transitions. Word has length 13 [2018-09-28 10:25:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:17,765 INFO L480 AbstractCegarLoop]: Abstraction has 820 states and 1367 transitions. [2018-09-28 10:25:17,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-28 10:25:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1367 transitions. [2018-09-28 10:25:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:17,766 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:17,766 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:17,766 INFO L423 AbstractCegarLoop]: === Iteration 24 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:17,766 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:17,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1799471129, now seen corresponding path program 1 times [2018-09-28 10:25:17,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:17,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:17,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:17,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:17,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:18,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:18,051 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 [2018-09-28 10:25:18,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:18,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:18,432 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:25:18,432 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2018-09-28 10:25:18,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:25:18,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:25:18,433 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:18,433 INFO L87 Difference]: Start difference. First operand 820 states and 1367 transitions. Second operand 14 states. [2018-09-28 10:25:23,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:23,598 INFO L93 Difference]: Finished difference Result 2058 states and 3403 transitions. [2018-09-28 10:25:23,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-28 10:25:23,609 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-09-28 10:25:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:23,614 INFO L225 Difference]: With dead ends: 2058 [2018-09-28 10:25:23,614 INFO L226 Difference]: Without dead ends: 1239 [2018-09-28 10:25:23,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2018-09-28 10:25:23,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 899. [2018-09-28 10:25:23,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 899 states. [2018-09-28 10:25:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1500 transitions. [2018-09-28 10:25:23,856 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1500 transitions. Word has length 13 [2018-09-28 10:25:23,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:23,856 INFO L480 AbstractCegarLoop]: Abstraction has 899 states and 1500 transitions. [2018-09-28 10:25:23,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:25:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1500 transitions. [2018-09-28 10:25:23,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:23,857 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:23,857 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:23,857 INFO L423 AbstractCegarLoop]: === Iteration 25 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:23,858 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:23,858 INFO L82 PathProgramCache]: Analyzing trace with hash 267374077, now seen corresponding path program 1 times [2018-09-28 10:25:23,858 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:23,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:23,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:23,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:23,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:24,398 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:24,398 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 [2018-09-28 10:25:24,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:24,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:25,139 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:25,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-09-28 10:25:25,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-28 10:25:25,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-28 10:25:25,140 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:25,142 INFO L87 Difference]: Start difference. First operand 899 states and 1500 transitions. Second operand 10 states. [2018-09-28 10:25:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:27,742 INFO L93 Difference]: Finished difference Result 1038 states and 1712 transitions. [2018-09-28 10:25:27,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-28 10:25:27,743 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2018-09-28 10:25:27,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:27,747 INFO L225 Difference]: With dead ends: 1038 [2018-09-28 10:25:27,747 INFO L226 Difference]: Without dead ends: 1036 [2018-09-28 10:25:27,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2018-09-28 10:25:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 897. [2018-09-28 10:25:27,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2018-09-28 10:25:27,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1498 transitions. [2018-09-28 10:25:27,940 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1498 transitions. Word has length 13 [2018-09-28 10:25:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:27,940 INFO L480 AbstractCegarLoop]: Abstraction has 897 states and 1498 transitions. [2018-09-28 10:25:27,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-28 10:25:27,940 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1498 transitions. [2018-09-28 10:25:27,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:27,941 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:27,941 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:27,941 INFO L423 AbstractCegarLoop]: === Iteration 26 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:27,942 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:27,942 INFO L82 PathProgramCache]: Analyzing trace with hash 290277111, now seen corresponding path program 1 times [2018-09-28 10:25:27,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:27,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:27,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:27,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:27,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:28,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:28,028 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 [2018-09-28 10:25:28,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:28,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:28,140 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:25:28,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2018-09-28 10:25:28,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:25:28,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:25:28,141 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:28,141 INFO L87 Difference]: Start difference. First operand 897 states and 1498 transitions. Second operand 14 states. [2018-09-28 10:25:32,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:32,982 INFO L93 Difference]: Finished difference Result 2193 states and 3616 transitions. [2018-09-28 10:25:32,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-28 10:25:32,982 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-09-28 10:25:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:32,987 INFO L225 Difference]: With dead ends: 2193 [2018-09-28 10:25:32,987 INFO L226 Difference]: Without dead ends: 1286 [2018-09-28 10:25:32,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:32,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2018-09-28 10:25:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 995. [2018-09-28 10:25:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2018-09-28 10:25:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1646 transitions. [2018-09-28 10:25:33,187 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1646 transitions. Word has length 13 [2018-09-28 10:25:33,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:33,187 INFO L480 AbstractCegarLoop]: Abstraction has 995 states and 1646 transitions. [2018-09-28 10:25:33,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:25:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1646 transitions. [2018-09-28 10:25:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:33,187 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:33,187 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:33,188 INFO L423 AbstractCegarLoop]: === Iteration 27 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:33,188 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:33,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2115278289, now seen corresponding path program 1 times [2018-09-28 10:25:33,188 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:33,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:33,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:33,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:33,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:33,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:33,276 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 [2018-09-28 10:25:33,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:33,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:33,424 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:33,424 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-09-28 10:25:33,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:25:33,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:25:33,425 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:33,425 INFO L87 Difference]: Start difference. First operand 995 states and 1646 transitions. Second operand 14 states. [2018-09-28 10:25:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:37,569 INFO L93 Difference]: Finished difference Result 2165 states and 3551 transitions. [2018-09-28 10:25:37,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:25:37,575 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-09-28 10:25:37,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:37,579 INFO L225 Difference]: With dead ends: 2165 [2018-09-28 10:25:37,579 INFO L226 Difference]: Without dead ends: 1153 [2018-09-28 10:25:37,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2018-09-28 10:25:37,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1001. [2018-09-28 10:25:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1001 states. [2018-09-28 10:25:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1642 transitions. [2018-09-28 10:25:37,780 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1642 transitions. Word has length 13 [2018-09-28 10:25:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:37,780 INFO L480 AbstractCegarLoop]: Abstraction has 1001 states and 1642 transitions. [2018-09-28 10:25:37,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:25:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1642 transitions. [2018-09-28 10:25:37,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:37,781 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:37,781 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:37,781 INFO L423 AbstractCegarLoop]: === Iteration 28 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:37,781 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:37,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2141517287, now seen corresponding path program 1 times [2018-09-28 10:25:37,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:37,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:37,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:37,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:37,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:37,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:37,886 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 [2018-09-28 10:25:37,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:37,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:38,017 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:38,017 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2018-09-28 10:25:38,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:25:38,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:25:38,018 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:38,018 INFO L87 Difference]: Start difference. First operand 1001 states and 1642 transitions. Second operand 13 states. [2018-09-28 10:25:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:41,279 INFO L93 Difference]: Finished difference Result 1397 states and 2244 transitions. [2018-09-28 10:25:41,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:25:41,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-09-28 10:25:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:41,283 INFO L225 Difference]: With dead ends: 1397 [2018-09-28 10:25:41,283 INFO L226 Difference]: Without dead ends: 1125 [2018-09-28 10:25:41,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2018-09-28 10:25:41,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 995. [2018-09-28 10:25:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2018-09-28 10:25:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1627 transitions. [2018-09-28 10:25:41,478 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1627 transitions. Word has length 13 [2018-09-28 10:25:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:41,478 INFO L480 AbstractCegarLoop]: Abstraction has 995 states and 1627 transitions. [2018-09-28 10:25:41,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:25:41,479 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1627 transitions. [2018-09-28 10:25:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-28 10:25:41,479 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:41,479 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:41,479 INFO L423 AbstractCegarLoop]: === Iteration 29 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:41,480 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:41,480 INFO L82 PathProgramCache]: Analyzing trace with hash 2129075237, now seen corresponding path program 1 times [2018-09-28 10:25:41,480 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:41,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:41,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:41,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:41,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:41,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:41,578 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:41,579 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 [2018-09-28 10:25:41,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:41,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:41,689 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:41,710 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:25:41,710 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2018-09-28 10:25:41,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:25:41,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:25:41,711 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:41,711 INFO L87 Difference]: Start difference. First operand 995 states and 1627 transitions. Second operand 14 states. [2018-09-28 10:25:47,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:47,460 INFO L93 Difference]: Finished difference Result 2724 states and 4397 transitions. [2018-09-28 10:25:47,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-28 10:25:47,461 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-09-28 10:25:47,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:47,468 INFO L225 Difference]: With dead ends: 2724 [2018-09-28 10:25:47,468 INFO L226 Difference]: Without dead ends: 1719 [2018-09-28 10:25:47,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2018-09-28 10:25:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1241. [2018-09-28 10:25:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2018-09-28 10:25:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 2017 transitions. [2018-09-28 10:25:47,724 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 2017 transitions. Word has length 13 [2018-09-28 10:25:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:47,724 INFO L480 AbstractCegarLoop]: Abstraction has 1241 states and 2017 transitions. [2018-09-28 10:25:47,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:25:47,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 2017 transitions. [2018-09-28 10:25:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-28 10:25:47,725 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:47,725 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:47,725 INFO L423 AbstractCegarLoop]: === Iteration 30 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:47,725 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:47,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1374164806, now seen corresponding path program 1 times [2018-09-28 10:25:47,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:47,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:47,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:47,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:47,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:47,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:47,833 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:47,833 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 [2018-09-28 10:25:47,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:47,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:48,026 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:48,027 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 16 [2018-09-28 10:25:48,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-28 10:25:48,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-28 10:25:48,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:48,027 INFO L87 Difference]: Start difference. First operand 1241 states and 2017 transitions. Second operand 17 states. [2018-09-28 10:25:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:52,787 INFO L93 Difference]: Finished difference Result 1442 states and 2324 transitions. [2018-09-28 10:25:52,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-28 10:25:52,788 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 15 [2018-09-28 10:25:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:52,792 INFO L225 Difference]: With dead ends: 1442 [2018-09-28 10:25:52,792 INFO L226 Difference]: Without dead ends: 1440 [2018-09-28 10:25:52,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:52,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2018-09-28 10:25:53,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1225. [2018-09-28 10:25:53,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2018-09-28 10:25:53,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1983 transitions. [2018-09-28 10:25:53,056 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1983 transitions. Word has length 15 [2018-09-28 10:25:53,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:53,056 INFO L480 AbstractCegarLoop]: Abstraction has 1225 states and 1983 transitions. [2018-09-28 10:25:53,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-28 10:25:53,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1983 transitions. [2018-09-28 10:25:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-28 10:25:53,057 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:53,057 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:53,057 INFO L423 AbstractCegarLoop]: === Iteration 31 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:53,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:53,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1511389740, now seen corresponding path program 1 times [2018-09-28 10:25:53,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:53,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:53,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:53,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:53,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:53,722 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:53,722 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 [2018-09-28 10:25:53,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:53,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:53,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:53,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2018-09-28 10:25:53,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:25:53,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:25:53,905 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:53,906 INFO L87 Difference]: Start difference. First operand 1225 states and 1983 transitions. Second operand 16 states. [2018-09-28 10:25:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:25:57,528 INFO L93 Difference]: Finished difference Result 1389 states and 2225 transitions. [2018-09-28 10:25:57,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:25:57,528 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-09-28 10:25:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:25:57,533 INFO L225 Difference]: With dead ends: 1389 [2018-09-28 10:25:57,533 INFO L226 Difference]: Without dead ends: 1387 [2018-09-28 10:25:57,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:25:57,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2018-09-28 10:25:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1211. [2018-09-28 10:25:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2018-09-28 10:25:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1953 transitions. [2018-09-28 10:25:57,801 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1953 transitions. Word has length 15 [2018-09-28 10:25:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:25:57,802 INFO L480 AbstractCegarLoop]: Abstraction has 1211 states and 1953 transitions. [2018-09-28 10:25:57,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:25:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1953 transitions. [2018-09-28 10:25:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:25:57,803 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:25:57,803 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:25:57,803 INFO L423 AbstractCegarLoop]: === Iteration 32 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:25:57,803 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:25:57,803 INFO L82 PathProgramCache]: Analyzing trace with hash -593242831, now seen corresponding path program 1 times [2018-09-28 10:25:57,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:25:57,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:25:57,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:57,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:57,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:25:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:58,041 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:25:58,041 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 [2018-09-28 10:25:58,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:25:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:25:58,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:25:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:25:58,224 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:25:58,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2018-09-28 10:25:58,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:25:58,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:25:58,225 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:25:58,225 INFO L87 Difference]: Start difference. First operand 1211 states and 1953 transitions. Second operand 14 states. [2018-09-28 10:26:04,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:04,640 INFO L93 Difference]: Finished difference Result 1445 states and 2303 transitions. [2018-09-28 10:26:04,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:26:04,641 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2018-09-28 10:26:04,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:04,645 INFO L225 Difference]: With dead ends: 1445 [2018-09-28 10:26:04,645 INFO L226 Difference]: Without dead ends: 1443 [2018-09-28 10:26:04,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2018-09-28 10:26:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1205. [2018-09-28 10:26:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2018-09-28 10:26:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1938 transitions. [2018-09-28 10:26:04,915 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1938 transitions. Word has length 16 [2018-09-28 10:26:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:04,915 INFO L480 AbstractCegarLoop]: Abstraction has 1205 states and 1938 transitions. [2018-09-28 10:26:04,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:26:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1938 transitions. [2018-09-28 10:26:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:26:04,916 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:04,917 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:04,917 INFO L423 AbstractCegarLoop]: === Iteration 33 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:04,917 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:04,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1223170690, now seen corresponding path program 1 times [2018-09-28 10:26:04,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:04,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:04,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:04,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:04,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:05,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:05,036 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:05,036 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 [2018-09-28 10:26:05,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:05,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:05,228 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:05,228 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-09-28 10:26:05,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-28 10:26:05,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-28 10:26:05,229 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:05,229 INFO L87 Difference]: Start difference. First operand 1205 states and 1938 transitions. Second operand 15 states. [2018-09-28 10:26:10,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:10,731 INFO L93 Difference]: Finished difference Result 1420 states and 2265 transitions. [2018-09-28 10:26:10,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:26:10,731 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2018-09-28 10:26:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:10,736 INFO L225 Difference]: With dead ends: 1420 [2018-09-28 10:26:10,736 INFO L226 Difference]: Without dead ends: 1418 [2018-09-28 10:26:10,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2018-09-28 10:26:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1213. [2018-09-28 10:26:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2018-09-28 10:26:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1951 transitions. [2018-09-28 10:26:11,009 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1951 transitions. Word has length 16 [2018-09-28 10:26:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:11,009 INFO L480 AbstractCegarLoop]: Abstraction has 1213 states and 1951 transitions. [2018-09-28 10:26:11,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-28 10:26:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1951 transitions. [2018-09-28 10:26:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:26:11,010 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:11,010 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:11,010 INFO L423 AbstractCegarLoop]: === Iteration 34 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:11,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:11,010 INFO L82 PathProgramCache]: Analyzing trace with hash -767609008, now seen corresponding path program 2 times [2018-09-28 10:26:11,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:11,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:11,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:11,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:11,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:11,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:11,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:26:11,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:26:11,109 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:26:11,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:26:11,110 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:11,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:11,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-09-28 10:26:11,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-28 10:26:11,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-28 10:26:11,189 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:11,189 INFO L87 Difference]: Start difference. First operand 1213 states and 1951 transitions. Second operand 11 states. [2018-09-28 10:26:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:14,036 INFO L93 Difference]: Finished difference Result 1334 states and 2129 transitions. [2018-09-28 10:26:14,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:26:14,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2018-09-28 10:26:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:14,041 INFO L225 Difference]: With dead ends: 1334 [2018-09-28 10:26:14,042 INFO L226 Difference]: Without dead ends: 1332 [2018-09-28 10:26:14,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2018-09-28 10:26:14,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1205. [2018-09-28 10:26:14,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2018-09-28 10:26:14,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1938 transitions. [2018-09-28 10:26:14,315 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1938 transitions. Word has length 16 [2018-09-28 10:26:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:14,315 INFO L480 AbstractCegarLoop]: Abstraction has 1205 states and 1938 transitions. [2018-09-28 10:26:14,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-28 10:26:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1938 transitions. [2018-09-28 10:26:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:26:14,316 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:14,316 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:14,316 INFO L423 AbstractCegarLoop]: === Iteration 35 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:14,316 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1823106549, now seen corresponding path program 1 times [2018-09-28 10:26:14,317 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:14,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:14,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:14,317 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:26:14,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:14,507 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:14,507 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 [2018-09-28 10:26:14,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:14,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:14,576 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:14,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-09-28 10:26:14,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-28 10:26:14,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-28 10:26:14,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:14,577 INFO L87 Difference]: Start difference. First operand 1205 states and 1938 transitions. Second operand 11 states. [2018-09-28 10:26:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:17,297 INFO L93 Difference]: Finished difference Result 1330 states and 2118 transitions. [2018-09-28 10:26:17,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-28 10:26:17,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2018-09-28 10:26:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:17,302 INFO L225 Difference]: With dead ends: 1330 [2018-09-28 10:26:17,302 INFO L226 Difference]: Without dead ends: 1328 [2018-09-28 10:26:17,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:17,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2018-09-28 10:26:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1211. [2018-09-28 10:26:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2018-09-28 10:26:17,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1948 transitions. [2018-09-28 10:26:17,560 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1948 transitions. Word has length 16 [2018-09-28 10:26:17,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:17,561 INFO L480 AbstractCegarLoop]: Abstraction has 1211 states and 1948 transitions. [2018-09-28 10:26:17,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-28 10:26:17,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1948 transitions. [2018-09-28 10:26:17,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:26:17,562 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:17,562 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:17,562 INFO L423 AbstractCegarLoop]: === Iteration 36 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:17,562 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:17,563 INFO L82 PathProgramCache]: Analyzing trace with hash 481081049, now seen corresponding path program 2 times [2018-09-28 10:26:17,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:17,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:17,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:17,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:17,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:17,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:17,669 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 [2018-09-28 10:26:17,678 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:26:17,686 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:26:17,686 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:26:17,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:17,822 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:17,822 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2018-09-28 10:26:17,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-28 10:26:17,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-28 10:26:17,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:17,823 INFO L87 Difference]: Start difference. First operand 1211 states and 1948 transitions. Second operand 14 states. [2018-09-28 10:26:22,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:22,539 INFO L93 Difference]: Finished difference Result 1430 states and 2273 transitions. [2018-09-28 10:26:22,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-28 10:26:22,540 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 16 [2018-09-28 10:26:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:22,545 INFO L225 Difference]: With dead ends: 1430 [2018-09-28 10:26:22,545 INFO L226 Difference]: Without dead ends: 1428 [2018-09-28 10:26:22,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2018-09-28 10:26:22,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1205. [2018-09-28 10:26:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1205 states. [2018-09-28 10:26:22,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1938 transitions. [2018-09-28 10:26:22,815 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1938 transitions. Word has length 16 [2018-09-28 10:26:22,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:22,815 INFO L480 AbstractCegarLoop]: Abstraction has 1205 states and 1938 transitions. [2018-09-28 10:26:22,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-28 10:26:22,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1938 transitions. [2018-09-28 10:26:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-28 10:26:22,816 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:22,816 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:22,816 INFO L423 AbstractCegarLoop]: === Iteration 37 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:22,817 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:22,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1936399254, now seen corresponding path program 1 times [2018-09-28 10:26:22,817 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:22,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:22,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:22,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-28 10:26:22,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:23,255 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:23,255 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 [2018-09-28 10:26:23,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:23,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:23,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:23,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2018-09-28 10:26:23,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-28 10:26:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-28 10:26:23,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:23,487 INFO L87 Difference]: Start difference. First operand 1205 states and 1938 transitions. Second operand 13 states. [2018-09-28 10:26:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:28,715 INFO L93 Difference]: Finished difference Result 1432 states and 2278 transitions. [2018-09-28 10:26:28,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-28 10:26:28,716 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2018-09-28 10:26:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:28,719 INFO L225 Difference]: With dead ends: 1432 [2018-09-28 10:26:28,719 INFO L226 Difference]: Without dead ends: 1430 [2018-09-28 10:26:28,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:28,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2018-09-28 10:26:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1199. [2018-09-28 10:26:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1199 states. [2018-09-28 10:26:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1923 transitions. [2018-09-28 10:26:28,997 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1923 transitions. Word has length 16 [2018-09-28 10:26:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:28,997 INFO L480 AbstractCegarLoop]: Abstraction has 1199 states and 1923 transitions. [2018-09-28 10:26:28,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-28 10:26:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1923 transitions. [2018-09-28 10:26:28,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:26:28,998 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:28,998 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:28,999 INFO L423 AbstractCegarLoop]: === Iteration 38 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:28,999 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:28,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1085218294, now seen corresponding path program 1 times [2018-09-28 10:26:28,999 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:28,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:29,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:29,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:29,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:29,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:29,141 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:29,141 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 [2018-09-28 10:26:29,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:29,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:29,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:29,261 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-28 10:26:29,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2018-09-28 10:26:29,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-28 10:26:29,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-28 10:26:29,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:29,263 INFO L87 Difference]: Start difference. First operand 1199 states and 1923 transitions. Second operand 17 states. [2018-09-28 10:26:38,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:38,138 INFO L93 Difference]: Finished difference Result 1695 states and 2653 transitions. [2018-09-28 10:26:38,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-28 10:26:38,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2018-09-28 10:26:38,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:38,141 INFO L225 Difference]: With dead ends: 1695 [2018-09-28 10:26:38,141 INFO L226 Difference]: Without dead ends: 1376 [2018-09-28 10:26:38,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2018-09-28 10:26:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1028. [2018-09-28 10:26:38,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2018-09-28 10:26:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1643 transitions. [2018-09-28 10:26:38,391 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1643 transitions. Word has length 18 [2018-09-28 10:26:38,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:38,391 INFO L480 AbstractCegarLoop]: Abstraction has 1028 states and 1643 transitions. [2018-09-28 10:26:38,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-28 10:26:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1643 transitions. [2018-09-28 10:26:38,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:26:38,392 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:38,392 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:38,392 INFO L423 AbstractCegarLoop]: === Iteration 39 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:38,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:38,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1597439053, now seen corresponding path program 1 times [2018-09-28 10:26:38,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:38,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:38,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:38,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:38,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:38,571 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:38,572 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 [2018-09-28 10:26:38,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:38,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:38,743 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:38,743 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2018-09-28 10:26:38,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:26:38,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:26:38,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:38,744 INFO L87 Difference]: Start difference. First operand 1028 states and 1643 transitions. Second operand 16 states. [2018-09-28 10:26:43,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:43,611 INFO L93 Difference]: Finished difference Result 1514 states and 2354 transitions. [2018-09-28 10:26:43,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-28 10:26:43,614 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-28 10:26:43,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:43,616 INFO L225 Difference]: With dead ends: 1514 [2018-09-28 10:26:43,616 INFO L226 Difference]: Without dead ends: 1219 [2018-09-28 10:26:43,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:43,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2018-09-28 10:26:43,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1024. [2018-09-28 10:26:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2018-09-28 10:26:43,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1632 transitions. [2018-09-28 10:26:43,865 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1632 transitions. Word has length 18 [2018-09-28 10:26:43,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:43,865 INFO L480 AbstractCegarLoop]: Abstraction has 1024 states and 1632 transitions. [2018-09-28 10:26:43,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:26:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1632 transitions. [2018-09-28 10:26:43,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:26:43,867 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:43,867 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:43,867 INFO L423 AbstractCegarLoop]: === Iteration 40 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:43,867 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:43,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1672170852, now seen corresponding path program 1 times [2018-09-28 10:26:43,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:43,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:43,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:43,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:43,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-28 10:26:44,022 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:44,023 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 [2018-09-28 10:26:44,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:44,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:44,178 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:44,178 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2018-09-28 10:26:44,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:26:44,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:26:44,178 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:44,178 INFO L87 Difference]: Start difference. First operand 1024 states and 1632 transitions. Second operand 16 states. [2018-09-28 10:26:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:49,628 INFO L93 Difference]: Finished difference Result 2556 states and 4045 transitions. [2018-09-28 10:26:49,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-28 10:26:49,629 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 18 [2018-09-28 10:26:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:49,631 INFO L225 Difference]: With dead ends: 2556 [2018-09-28 10:26:49,631 INFO L226 Difference]: Without dead ends: 1529 [2018-09-28 10:26:49,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-09-28 10:26:49,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1073. [2018-09-28 10:26:49,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-09-28 10:26:49,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1703 transitions. [2018-09-28 10:26:49,914 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1703 transitions. Word has length 18 [2018-09-28 10:26:49,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:49,914 INFO L480 AbstractCegarLoop]: Abstraction has 1073 states and 1703 transitions. [2018-09-28 10:26:49,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-28 10:26:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1703 transitions. [2018-09-28 10:26:49,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:26:49,915 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:49,915 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:49,915 INFO L423 AbstractCegarLoop]: === Iteration 41 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:49,915 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:49,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1136854538, now seen corresponding path program 1 times [2018-09-28 10:26:49,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:49,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:49,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:49,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:49,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:50,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:50,004 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 [2018-09-28 10:26:50,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:50,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:50,142 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:50,142 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-09-28 10:26:50,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-28 10:26:50,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-28 10:26:50,143 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:50,143 INFO L87 Difference]: Start difference. First operand 1073 states and 1703 transitions. Second operand 15 states. [2018-09-28 10:26:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:55,252 INFO L93 Difference]: Finished difference Result 1546 states and 2389 transitions. [2018-09-28 10:26:55,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-28 10:26:55,253 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2018-09-28 10:26:55,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:55,255 INFO L225 Difference]: With dead ends: 1546 [2018-09-28 10:26:55,255 INFO L226 Difference]: Without dead ends: 1291 [2018-09-28 10:26:55,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2018-09-28 10:26:55,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1056. [2018-09-28 10:26:55,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2018-09-28 10:26:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1674 transitions. [2018-09-28 10:26:55,600 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1674 transitions. Word has length 18 [2018-09-28 10:26:55,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:55,601 INFO L480 AbstractCegarLoop]: Abstraction has 1056 states and 1674 transitions. [2018-09-28 10:26:55,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-28 10:26:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1674 transitions. [2018-09-28 10:26:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-28 10:26:55,602 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:55,602 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:26:55,602 INFO L423 AbstractCegarLoop]: === Iteration 42 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:55,602 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash 975863549, now seen corresponding path program 1 times [2018-09-28 10:26:55,602 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:55,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:55,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:55,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:55,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:55,661 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:55,661 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 [2018-09-28 10:26:55,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:55,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:55,729 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:55,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-28 10:26:55,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-28 10:26:55,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-28 10:26:55,729 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:55,730 INFO L87 Difference]: Start difference. First operand 1056 states and 1674 transitions. Second operand 7 states. [2018-09-28 10:26:56,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:26:56,964 INFO L93 Difference]: Finished difference Result 1635 states and 2515 transitions. [2018-09-28 10:26:56,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-28 10:26:56,964 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2018-09-28 10:26:56,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:26:56,968 INFO L225 Difference]: With dead ends: 1635 [2018-09-28 10:26:56,968 INFO L226 Difference]: Without dead ends: 1494 [2018-09-28 10:26:56,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:26:56,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2018-09-28 10:26:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1094. [2018-09-28 10:26:57,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1094 states. [2018-09-28 10:26:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1728 transitions. [2018-09-28 10:26:57,376 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1728 transitions. Word has length 18 [2018-09-28 10:26:57,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:26:57,377 INFO L480 AbstractCegarLoop]: Abstraction has 1094 states and 1728 transitions. [2018-09-28 10:26:57,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-28 10:26:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1728 transitions. [2018-09-28 10:26:57,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-28 10:26:57,377 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:26:57,378 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:26:57,378 INFO L423 AbstractCegarLoop]: === Iteration 43 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:26:57,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:26:57,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1152261854, now seen corresponding path program 1 times [2018-09-28 10:26:57,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:26:57,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:26:57,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:57,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:57,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:26:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:57,499 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:26:57,499 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 [2018-09-28 10:26:57,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:26:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:26:57,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:26:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:26:57,688 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:26:57,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 19 [2018-09-28 10:26:57,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-28 10:26:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-28 10:26:57,689 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:26:57,689 INFO L87 Difference]: Start difference. First operand 1094 states and 1728 transitions. Second operand 20 states. [2018-09-28 10:27:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:09,073 INFO L93 Difference]: Finished difference Result 2230 states and 3534 transitions. [2018-09-28 10:27:09,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-28 10:27:09,073 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20 [2018-09-28 10:27:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:09,075 INFO L225 Difference]: With dead ends: 2230 [2018-09-28 10:27:09,075 INFO L226 Difference]: Without dead ends: 2180 [2018-09-28 10:27:09,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:09,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2018-09-28 10:27:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1150. [2018-09-28 10:27:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1150 states. [2018-09-28 10:27:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1853 transitions. [2018-09-28 10:27:09,462 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1853 transitions. Word has length 20 [2018-09-28 10:27:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:09,462 INFO L480 AbstractCegarLoop]: Abstraction has 1150 states and 1853 transitions. [2018-09-28 10:27:09,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-28 10:27:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1853 transitions. [2018-09-28 10:27:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-28 10:27:09,463 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:09,463 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-09-28 10:27:09,464 INFO L423 AbstractCegarLoop]: === Iteration 44 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:09,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash -79326665, now seen corresponding path program 1 times [2018-09-28 10:27:09,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:09,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:09,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:09,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:09,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-28 10:27:09,545 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:09,545 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-28 10:27:09,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:09,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-28 10:27:09,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:09,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-28 10:27:09,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-28 10:27:09,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-28 10:27:09,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:09,611 INFO L87 Difference]: Start difference. First operand 1150 states and 1853 transitions. Second operand 7 states. [2018-09-28 10:27:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:10,430 INFO L93 Difference]: Finished difference Result 1760 states and 2751 transitions. [2018-09-28 10:27:10,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-28 10:27:10,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-09-28 10:27:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:10,432 INFO L225 Difference]: With dead ends: 1760 [2018-09-28 10:27:10,432 INFO L226 Difference]: Without dead ends: 1507 [2018-09-28 10:27:10,433 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:10,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2018-09-28 10:27:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1026. [2018-09-28 10:27:10,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2018-09-28 10:27:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1655 transitions. [2018-09-28 10:27:10,720 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1655 transitions. Word has length 20 [2018-09-28 10:27:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:10,720 INFO L480 AbstractCegarLoop]: Abstraction has 1026 states and 1655 transitions. [2018-09-28 10:27:10,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-28 10:27:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1655 transitions. [2018-09-28 10:27:10,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-28 10:27:10,721 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:10,721 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2018-09-28 10:27:10,722 INFO L423 AbstractCegarLoop]: === Iteration 45 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:10,722 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:10,722 INFO L82 PathProgramCache]: Analyzing trace with hash -79325383, now seen corresponding path program 1 times [2018-09-28 10:27:10,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:10,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:10,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:10,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:10,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:11,284 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:11,284 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 [2018-09-28 10:27:11,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:11,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:11,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:11,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:11,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 15 [2018-09-28 10:27:11,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-28 10:27:11,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-28 10:27:11,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:11,441 INFO L87 Difference]: Start difference. First operand 1026 states and 1655 transitions. Second operand 17 states. [2018-09-28 10:27:18,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:18,301 INFO L93 Difference]: Finished difference Result 1878 states and 3019 transitions. [2018-09-28 10:27:18,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-28 10:27:18,301 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2018-09-28 10:27:18,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:18,303 INFO L225 Difference]: With dead ends: 1878 [2018-09-28 10:27:18,303 INFO L226 Difference]: Without dead ends: 1729 [2018-09-28 10:27:18,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:18,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2018-09-28 10:27:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1013. [2018-09-28 10:27:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2018-09-28 10:27:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1646 transitions. [2018-09-28 10:27:18,614 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1646 transitions. Word has length 20 [2018-09-28 10:27:18,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:18,615 INFO L480 AbstractCegarLoop]: Abstraction has 1013 states and 1646 transitions. [2018-09-28 10:27:18,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-28 10:27:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1646 transitions. [2018-09-28 10:27:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-28 10:27:18,615 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:18,615 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-28 10:27:18,616 INFO L423 AbstractCegarLoop]: === Iteration 46 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:18,616 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:18,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1614386347, now seen corresponding path program 1 times [2018-09-28 10:27:18,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:18,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:18,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:18,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:18,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-28 10:27:18,769 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:18,769 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 [2018-09-28 10:27:18,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:18,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:18,978 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:18,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2018-09-28 10:27:18,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-28 10:27:18,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-28 10:27:18,979 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:18,979 INFO L87 Difference]: Start difference. First operand 1013 states and 1646 transitions. Second operand 20 states. [2018-09-28 10:27:29,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:29,038 INFO L93 Difference]: Finished difference Result 2738 states and 4441 transitions. [2018-09-28 10:27:29,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-28 10:27:29,038 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 21 [2018-09-28 10:27:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:29,040 INFO L225 Difference]: With dead ends: 2738 [2018-09-28 10:27:29,040 INFO L226 Difference]: Without dead ends: 1726 [2018-09-28 10:27:29,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2018-09-28 10:27:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1481. [2018-09-28 10:27:29,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1481 states. [2018-09-28 10:27:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2418 transitions. [2018-09-28 10:27:29,429 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2418 transitions. Word has length 21 [2018-09-28 10:27:29,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:29,429 INFO L480 AbstractCegarLoop]: Abstraction has 1481 states and 2418 transitions. [2018-09-28 10:27:29,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-28 10:27:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2418 transitions. [2018-09-28 10:27:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-28 10:27:29,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:29,430 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:27:29,431 INFO L423 AbstractCegarLoop]: === Iteration 47 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:29,431 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:29,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1615679213, now seen corresponding path program 1 times [2018-09-28 10:27:29,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:29,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:29,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:29,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:29,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:29,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:29,539 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 [2018-09-28 10:27:29,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:29,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:30,943 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:30,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-28 10:27:30,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-28 10:27:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-28 10:27:30,944 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:30,944 INFO L87 Difference]: Start difference. First operand 1481 states and 2418 transitions. Second operand 20 states. [2018-09-28 10:27:44,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:44,010 INFO L93 Difference]: Finished difference Result 2759 states and 4491 transitions. [2018-09-28 10:27:44,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-28 10:27:44,011 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 21 [2018-09-28 10:27:44,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:44,013 INFO L225 Difference]: With dead ends: 2759 [2018-09-28 10:27:44,013 INFO L226 Difference]: Without dead ends: 2757 [2018-09-28 10:27:44,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2018-09-28 10:27:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 1886. [2018-09-28 10:27:44,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1886 states. [2018-09-28 10:27:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 3096 transitions. [2018-09-28 10:27:44,524 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 3096 transitions. Word has length 21 [2018-09-28 10:27:44,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:44,524 INFO L480 AbstractCegarLoop]: Abstraction has 1886 states and 3096 transitions. [2018-09-28 10:27:44,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-28 10:27:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 3096 transitions. [2018-09-28 10:27:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-28 10:27:44,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:44,525 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:27:44,526 INFO L423 AbstractCegarLoop]: === Iteration 48 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:44,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:44,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1336385522, now seen corresponding path program 1 times [2018-09-28 10:27:44,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:44,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:44,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:44,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:44,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:44,627 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:44,627 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 [2018-09-28 10:27:44,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:44,644 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:44,833 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:44,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-09-28 10:27:44,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-28 10:27:44,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-28 10:27:44,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:44,834 INFO L87 Difference]: Start difference. First operand 1886 states and 3096 transitions. Second operand 18 states. [2018-09-28 10:27:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:27:54,656 INFO L93 Difference]: Finished difference Result 2657 states and 4320 transitions. [2018-09-28 10:27:54,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-28 10:27:54,656 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 21 [2018-09-28 10:27:54,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:27:54,658 INFO L225 Difference]: With dead ends: 2657 [2018-09-28 10:27:54,658 INFO L226 Difference]: Without dead ends: 2655 [2018-09-28 10:27:54,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:27:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2018-09-28 10:27:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 1726. [2018-09-28 10:27:55,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-09-28 10:27:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2827 transitions. [2018-09-28 10:27:55,124 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2827 transitions. Word has length 21 [2018-09-28 10:27:55,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:27:55,124 INFO L480 AbstractCegarLoop]: Abstraction has 1726 states and 2827 transitions. [2018-09-28 10:27:55,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-28 10:27:55,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2827 transitions. [2018-09-28 10:27:55,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-28 10:27:55,125 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:27:55,125 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:27:55,125 INFO L423 AbstractCegarLoop]: === Iteration 49 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:27:55,125 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:27:55,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1327798635, now seen corresponding path program 1 times [2018-09-28 10:27:55,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:27:55,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:27:55,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:55,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:55,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:27:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:55,232 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:27:55,232 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 [2018-09-28 10:27:55,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:27:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:27:55,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:27:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:27:55,543 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:27:55,543 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-09-28 10:27:55,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-28 10:27:55,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-28 10:27:55,544 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:27:55,544 INFO L87 Difference]: Start difference. First operand 1726 states and 2827 transitions. Second operand 19 states. [2018-09-28 10:28:07,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-28 10:28:07,464 INFO L93 Difference]: Finished difference Result 2434 states and 3937 transitions. [2018-09-28 10:28:07,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-28 10:28:07,465 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 21 [2018-09-28 10:28:07,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-28 10:28:07,467 INFO L225 Difference]: With dead ends: 2434 [2018-09-28 10:28:07,467 INFO L226 Difference]: Without dead ends: 2432 [2018-09-28 10:28:07,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-28 10:28:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2018-09-28 10:28:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1872. [2018-09-28 10:28:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2018-09-28 10:28:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3060 transitions. [2018-09-28 10:28:08,028 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3060 transitions. Word has length 21 [2018-09-28 10:28:08,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-28 10:28:08,028 INFO L480 AbstractCegarLoop]: Abstraction has 1872 states and 3060 transitions. [2018-09-28 10:28:08,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-28 10:28:08,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3060 transitions. [2018-09-28 10:28:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-28 10:28:08,029 INFO L367 BasicCegarLoop]: Found error trace [2018-09-28 10:28:08,029 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-09-28 10:28:08,030 INFO L423 AbstractCegarLoop]: === Iteration 50 === [productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT]=== [2018-09-28 10:28:08,030 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-28 10:28:08,030 INFO L82 PathProgramCache]: Analyzing trace with hash 133649308, now seen corresponding path program 2 times [2018-09-28 10:28:08,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-28 10:28:08,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-28 10:28:08,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-28 10:28:08,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-28 10:28:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-28 10:28:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-28 10:28:08,126 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-28 10:28:08,126 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 [2018-09-28 10:28:08,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-28 10:28:08,144 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-28 10:28:08,144 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-28 10:28:08,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-28 10:28:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-28 10:28:08,257 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-28 10:28:08,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2018-09-28 10:28:08,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-28 10:28:08,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-28 10:28:08,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-28 10:28:08,258 INFO L87 Difference]: Start difference. First operand 1872 states and 3060 transitions. Second operand 16 states. Received shutdown request... [2018-09-28 10:28:12,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-28 10:28:12,997 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-28 10:28:13,003 WARN L206 ceAbstractionStarter]: Timeout [2018-09-28 10:28:13,004 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.09 10:28:13 BoogieIcfgContainer [2018-09-28 10:28:13,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-28 10:28:13,005 INFO L168 Benchmark]: Toolchain (without parser) took 246472.70 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -138.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 373.5 MB). Peak memory consumption was 235.1 MB. Max. memory is 7.1 GB. [2018-09-28 10:28:13,007 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:28:13,007 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:28:13,008 INFO L168 Benchmark]: Boogie Preprocessor took 21.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-28 10:28:13,008 INFO L168 Benchmark]: RCFGBuilder took 576.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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. [2018-09-28 10:28:13,010 INFO L168 Benchmark]: TraceAbstraction took 245823.86 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -138.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 352.4 MB). Peak memory consumption was 214.0 MB. Max. memory is 7.1 GB. [2018-09-28 10:28:13,017 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 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.09 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 576.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 245823.86 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -138.4 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 352.4 MB). Peak memory consumption was 214.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 74). Cancelled while BasicCegarLoop was constructing difference of abstraction (1872states) and FLOYD_HOARE automaton (currently 41 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (246 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 94). Cancelled while BasicCegarLoop was constructing difference of abstraction (1872states) and FLOYD_HOARE automaton (currently 41 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (246 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (1872states) and FLOYD_HOARE automaton (currently 41 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (246 states constructedinput type IntersectNwa). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 85). Cancelled while BasicCegarLoop was constructing difference of abstraction (1872states) and FLOYD_HOARE automaton (currently 41 states, 16 states before enhancement), while ReachableStatesComputation was computing reachable states (246 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 4 error locations. TIMEOUT Result, 245.7s OverallTime, 50 OverallIterations, 3 TraceHistogramMax, 217.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1948 SDtfs, 8618 SDslu, 6070 SDs, 0 SdLazy, 38167 SolverSat, 4340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2142 GetRequests, 409 SyntacticMatches, 1 SemanticMatches, 1732 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1886occurred in iteration=47, 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: 9.0s AutomataMinimizationTime, 49 MinimizatonAttempts, 10960 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 16.4s InterpolantComputationTime, 1319 NumberOfCodeBlocks, 1319 NumberOfCodeBlocksAsserted, 96 NumberOfCheckSat, 1226 ConstructedInterpolants, 137 QuantifiedInterpolants, 126562 SizeOfPredicates, 201 NumberOfNonLiveVariables, 1841 ConjunctsInSsa, 397 ConjunctsInUnsatCore, 93 InterpolantComputations, 14 PerfectInterpolantSequences, 122/484 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.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-28_10-28-13-040.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-28_10-28-13-040.csv Completed graceful shutdown