java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:32:45,444 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:32:45,447 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:32:45,465 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:32:45,466 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:32:45,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:32:45,469 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:32:45,471 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:32:45,474 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:32:45,482 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:32:45,483 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:32:45,517 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-30 10:32:45,535 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:32:45,535 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:32:45,536 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:32:45,536 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:32:45,537 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:32:45,537 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:32:45,537 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:32:45,537 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:32:45,538 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:32:45,538 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:32:45,538 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:32:45,538 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:32:45,538 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:32:45,538 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:32:45,539 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:32:45,539 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:32:45,539 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:32:45,539 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:32:45,539 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:32:45,540 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:32:45,540 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:32:45,540 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:32:45,540 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:32:45,540 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:32:45,541 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:32:45,541 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:32:45,541 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:32:45,541 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:32:45,541 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:32:45,541 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:32:45,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:32:45,608 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:32:45,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:32:45,617 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:32:45,618 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:32:45,619 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-09-30 10:32:45,620 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-09-30 10:32:45,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:32:45,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:32:45,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:32:45,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:32:45,685 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:32:45,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,726 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 10:32:45,726 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 10:32:45,727 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 10:32:45,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:32:45,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:32:45,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:32:45,730 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:32:45,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... [2018-09-30 10:32:45,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:32:45,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:32:45,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:32:45,757 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:32:45,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:32:45,838 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-30 10:32:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-30 10:32:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-30 10:32:46,169 INFO L345 CfgBuilder]: Using library mode [2018-09-30 10:32:46,170 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:32:46 BoogieIcfgContainer [2018-09-30 10:32:46,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:32:46,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:32:46,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:32:46,174 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:32:46,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:32:45" (1/2) ... [2018-09-30 10:32:46,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61410a00 and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:32:46, skipping insertion in model container [2018-09-30 10:32:46,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:32:46" (2/2) ... [2018-09-30 10:32:46,179 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-09-30 10:32:46,189 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:32:46,201 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:32:46,251 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:32:46,252 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:32:46,252 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:32:46,252 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:32:46,253 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:32:46,253 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:32:46,253 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:32:46,253 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:32:46,254 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:32:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-09-30 10:32:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:32:46,284 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:46,285 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 10:32:46,286 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:46,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:46,292 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-09-30 10:32:46,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:46,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:46,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:46,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:46,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:46,482 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:32:46,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:32:46,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:32:46,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:32:46,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:32:46,512 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-09-30 10:32:46,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:46,601 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-09-30 10:32:46,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:32:46,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 10:32:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:46,624 INFO L225 Difference]: With dead ends: 22 [2018-09-30 10:32:46,624 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 10:32:46,630 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:32:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 10:32:46,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 10:32:46,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 10:32:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-30 10:32:46,665 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-09-30 10:32:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:46,665 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-30 10:32:46,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:32:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-30 10:32:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:32:46,666 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:46,666 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 10:32:46,667 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:46,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:46,667 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-09-30 10:32:46,667 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:46,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:46,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:46,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:46,696 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:32:46,696 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:32:46,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:32:46,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:32:46,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:32:46,698 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-09-30 10:32:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:46,719 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 10:32:46,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:32:46,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 10:32:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:46,720 INFO L225 Difference]: With dead ends: 13 [2018-09-30 10:32:46,720 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 10:32:46,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-30 10:32:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 10:32:46,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 10:32:46,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 10:32:46,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 10:32:46,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-09-30 10:32:46,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:46,725 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 10:32:46,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:32:46,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 10:32:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 10:32:46,726 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:46,726 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:46,726 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:46,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:46,727 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-09-30 10:32:46,727 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:46,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:46,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:46,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:46,802 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:46,802 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:46,811 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:46,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:46,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:46,882 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:46,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:32:46,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:32:46,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:32:46,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-30 10:32:46,884 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-09-30 10:32:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:46,924 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-30 10:32:46,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:32:46,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-09-30 10:32:46,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:46,926 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:32:46,926 INFO L226 Difference]: Without dead ends: 15 [2018-09-30 10:32:46,927 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-30 10:32:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-30 10:32:46,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-30 10:32:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 10:32:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-30 10:32:46,930 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-09-30 10:32:46,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:46,931 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-30 10:32:46,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:32:46,931 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-30 10:32:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:32:46,932 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:46,932 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:46,932 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:46,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:46,933 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-09-30 10:32:46,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:46,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:46,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:46,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:47,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:47,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:47,022 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:32:47,052 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:32:47,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:47,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:47,090 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:47,090 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 10:32:47,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:32:47,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:32:47,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-30 10:32:47,091 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-09-30 10:32:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:47,107 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-30 10:32:47,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:32:47,108 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-30 10:32:47,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:47,109 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:32:47,109 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 10:32:47,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-09-30 10:32:47,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 10:32:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 10:32:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:32:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-30 10:32:47,117 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-09-30 10:32:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:47,117 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-30 10:32:47,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:32:47,118 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-30 10:32:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:32:47,118 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:47,119 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:47,119 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:47,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:47,119 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-09-30 10:32:47,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:47,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:47,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:47,121 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:47,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:47,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:47,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:47,269 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:32:47,282 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 10:32:47,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:47,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:47,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:47,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 10:32:47,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:32:47,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:32:47,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-30 10:32:47,316 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-09-30 10:32:47,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:47,378 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-30 10:32:47,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:32:47,381 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-09-30 10:32:47,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:47,382 INFO L225 Difference]: With dead ends: 25 [2018-09-30 10:32:47,382 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:32:47,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-30 10:32:47,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:32:47,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 10:32:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 10:32:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-30 10:32:47,386 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-09-30 10:32:47,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:47,387 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-30 10:32:47,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:32:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-30 10:32:47,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:32:47,388 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:47,388 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:47,388 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:47,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:47,389 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-09-30 10:32:47,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:47,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:47,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:47,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:47,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:47,669 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:47,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:47,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:47,687 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:32:47,715 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:32:47,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:47,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:47,761 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:47,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 10:32:47,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 10:32:47,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 10:32:47,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-30 10:32:47,763 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-09-30 10:32:47,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:47,794 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-30 10:32:47,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:32:47,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-09-30 10:32:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:47,797 INFO L225 Difference]: With dead ends: 29 [2018-09-30 10:32:47,798 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 10:32:47,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-30 10:32:47,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 10:32:47,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 10:32:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 10:32:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-30 10:32:47,804 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-09-30 10:32:47,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:47,805 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-30 10:32:47,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 10:32:47,805 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-30 10:32:47,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 10:32:47,806 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:47,806 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:47,807 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:47,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:47,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-09-30 10:32:47,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:47,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:47,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:47,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:47,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:47,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:47,951 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:47,951 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:47,961 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:32:47,975 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 10:32:47,975 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:47,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:48,023 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:48,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 10:32:48,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:32:48,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:32:48,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-30 10:32:48,025 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-09-30 10:32:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:48,137 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-30 10:32:48,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 10:32:48,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-30 10:32:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:48,139 INFO L225 Difference]: With dead ends: 33 [2018-09-30 10:32:48,139 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 10:32:48,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-30 10:32:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 10:32:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 10:32:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 10:32:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-30 10:32:48,144 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-09-30 10:32:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:48,145 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-30 10:32:48,145 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:32:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-30 10:32:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 10:32:48,146 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:48,146 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:48,146 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:48,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:48,147 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-09-30 10:32:48,147 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:48,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:48,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:48,148 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:48,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:48,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:48,310 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:48,318 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:32:48,330 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 10:32:48,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:48,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:48,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:48,369 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 10:32:48,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:32:48,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:32:48,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-30 10:32:48,370 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-09-30 10:32:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:48,409 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-30 10:32:48,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:32:48,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-30 10:32:48,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:48,411 INFO L225 Difference]: With dead ends: 37 [2018-09-30 10:32:48,411 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 10:32:48,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-09-30 10:32:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 10:32:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 10:32:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 10:32:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-30 10:32:48,416 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-09-30 10:32:48,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:48,417 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-30 10:32:48,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:32:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-30 10:32:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 10:32:48,418 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:48,418 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:48,419 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:48,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:48,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-09-30 10:32:48,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:48,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:48,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:48,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:48,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:48,934 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:48,935 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:48,935 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:48,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:48,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:48,980 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:49,004 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:49,004 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 10:32:49,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:32:49,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:32:49,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-09-30 10:32:49,005 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-09-30 10:32:49,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:49,057 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-30 10:32:49,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 10:32:49,058 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-09-30 10:32:49,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:49,059 INFO L225 Difference]: With dead ends: 41 [2018-09-30 10:32:49,059 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 10:32:49,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-09-30 10:32:49,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 10:32:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 10:32:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 10:32:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-30 10:32:49,064 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-09-30 10:32:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:49,065 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-30 10:32:49,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:32:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-30 10:32:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:32:49,066 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:49,067 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:49,067 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:49,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:49,067 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-09-30 10:32:49,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:49,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:49,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:49,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:49,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:49,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:49,348 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:49,358 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:32:49,375 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:32:49,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:49,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:49,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:49,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 10:32:49,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:32:49,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:32:49,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-30 10:32:49,420 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-09-30 10:32:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:49,479 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-30 10:32:49,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:32:49,481 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-09-30 10:32:49,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:49,482 INFO L225 Difference]: With dead ends: 45 [2018-09-30 10:32:49,482 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 10:32:49,482 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-09-30 10:32:49,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 10:32:49,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 10:32:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 10:32:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-30 10:32:49,487 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-09-30 10:32:49,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:49,488 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-30 10:32:49,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:32:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-30 10:32:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 10:32:49,489 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:49,489 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:49,490 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:49,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:49,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-09-30 10:32:49,490 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:49,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:49,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:49,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:49,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:49,659 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:49,659 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:49,669 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:32:49,695 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 10:32:49,696 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:49,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:49,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:49,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 10:32:49,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:32:49,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:32:49,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-09-30 10:32:49,737 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-09-30 10:32:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:49,998 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-30 10:32:49,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 10:32:49,998 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-09-30 10:32:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:49,999 INFO L225 Difference]: With dead ends: 49 [2018-09-30 10:32:49,999 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 10:32:50,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-09-30 10:32:50,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 10:32:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 10:32:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 10:32:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-30 10:32:50,008 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-09-30 10:32:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:50,009 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-30 10:32:50,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:32:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-30 10:32:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 10:32:50,010 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:50,010 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:50,011 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:50,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:50,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-09-30 10:32:50,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:50,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:50,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:50,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:50,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:50,277 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:50,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:50,285 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:32:50,324 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:32:50,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:50,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:50,362 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:50,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 10:32:50,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:32:50,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:32:50,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-09-30 10:32:50,364 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-09-30 10:32:50,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:50,433 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-30 10:32:50,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:32:50,437 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-09-30 10:32:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:50,438 INFO L225 Difference]: With dead ends: 53 [2018-09-30 10:32:50,438 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 10:32:50,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-09-30 10:32:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 10:32:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 10:32:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 10:32:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-30 10:32:50,447 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-09-30 10:32:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:50,447 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-30 10:32:50,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:32:50,447 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-30 10:32:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 10:32:50,448 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:50,450 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:50,451 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:50,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-09-30 10:32:50,451 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:50,451 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:50,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:50,452 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:50,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:50,695 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:50,695 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:50,704 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:32:50,723 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 10:32:50,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:50,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:50,764 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:50,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 10:32:50,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:32:50,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:32:50,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-09-30 10:32:50,765 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-09-30 10:32:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:50,810 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-30 10:32:50,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 10:32:50,811 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-09-30 10:32:50,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:50,812 INFO L225 Difference]: With dead ends: 57 [2018-09-30 10:32:50,812 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 10:32:50,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-09-30 10:32:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 10:32:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 10:32:50,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 10:32:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-30 10:32:50,819 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-09-30 10:32:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:50,820 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-30 10:32:50,820 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:32:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-30 10:32:50,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 10:32:50,821 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:50,821 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:50,821 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:50,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:50,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-09-30 10:32:50,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:50,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:50,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:50,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:50,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:51,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:51,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-30 10:32:51,042 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:32:51,200 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 10:32:51,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:51,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:51,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:51,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 10:32:51,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:32:51,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:32:51,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-30 10:32:51,255 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-09-30 10:32:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:51,360 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-30 10:32:51,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:32:51,361 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-09-30 10:32:51,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:51,361 INFO L225 Difference]: With dead ends: 61 [2018-09-30 10:32:51,362 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 10:32:51,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-09-30 10:32:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 10:32:51,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 10:32:51,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 10:32:51,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-30 10:32:51,368 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-09-30 10:32:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:51,368 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-30 10:32:51,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:32:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-30 10:32:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 10:32:51,370 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:51,370 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:51,370 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:51,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:51,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-09-30 10:32:51,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:51,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:51,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:51,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:51,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:51,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:51,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:51,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:51,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:51,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:51,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 10:32:51,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:32:51,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:32:51,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-09-30 10:32:51,709 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-09-30 10:32:51,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:51,763 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-30 10:32:51,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:32:51,764 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-09-30 10:32:51,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:51,765 INFO L225 Difference]: With dead ends: 65 [2018-09-30 10:32:51,765 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 10:32:51,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-09-30 10:32:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 10:32:51,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 10:32:51,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 10:32:51,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-30 10:32:51,772 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-09-30 10:32:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:51,772 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-30 10:32:51,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:32:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-30 10:32:51,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 10:32:51,773 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:51,776 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:51,777 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:51,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:51,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-09-30 10:32:51,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:51,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:51,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:51,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:51,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:52,000 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:52,000 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:52,009 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:32:52,049 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:32:52,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:52,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:52,089 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:52,089 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 10:32:52,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:32:52,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:32:52,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-09-30 10:32:52,091 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-09-30 10:32:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:52,151 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-30 10:32:52,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:32:52,151 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-09-30 10:32:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:52,152 INFO L225 Difference]: With dead ends: 69 [2018-09-30 10:32:52,152 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 10:32:52,152 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-09-30 10:32:52,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 10:32:52,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 10:32:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 10:32:52,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-30 10:32:52,160 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-09-30 10:32:52,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:52,160 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-30 10:32:52,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:32:52,160 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-30 10:32:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 10:32:52,162 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:52,162 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:52,162 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:52,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:52,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-09-30 10:32:52,163 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:52,163 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:52,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:52,164 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:52,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:52,380 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:52,380 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:52,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:32:52,416 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 10:32:52,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:52,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:52,459 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:52,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 10:32:52,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 10:32:52,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 10:32:52,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-09-30 10:32:52,460 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-09-30 10:32:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:52,500 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-30 10:32:52,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 10:32:52,500 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-09-30 10:32:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:52,501 INFO L225 Difference]: With dead ends: 73 [2018-09-30 10:32:52,501 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 10:32:52,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-09-30 10:32:52,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 10:32:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 10:32:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 10:32:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-30 10:32:52,507 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-09-30 10:32:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:52,508 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-30 10:32:52,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 10:32:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-30 10:32:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 10:32:52,509 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:52,509 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:52,509 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:52,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:52,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-09-30 10:32:52,510 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:52,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:52,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:52,511 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:52,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:52,880 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:52,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:52,888 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:32:52,925 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:32:52,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:52,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:52,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:52,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 10:32:52,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 10:32:52,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 10:32:52,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-30 10:32:52,969 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-09-30 10:32:53,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:53,134 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-30 10:32:53,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 10:32:53,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-09-30 10:32:53,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:53,135 INFO L225 Difference]: With dead ends: 77 [2018-09-30 10:32:53,135 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 10:32:53,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-09-30 10:32:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 10:32:53,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 10:32:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 10:32:53,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-30 10:32:53,139 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-09-30 10:32:53,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:53,140 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-30 10:32:53,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 10:32:53,140 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-30 10:32:53,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 10:32:53,141 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:53,141 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:53,142 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:53,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:53,142 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-09-30 10:32:53,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:53,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:53,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:53,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:53,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:53,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:53,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:53,881 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:32:53,983 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 10:32:53,983 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:53,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:54,035 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:54,035 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 10:32:54,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:32:54,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:32:54,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-09-30 10:32:54,037 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-09-30 10:32:54,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:54,103 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-30 10:32:54,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 10:32:54,104 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-09-30 10:32:54,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:54,105 INFO L225 Difference]: With dead ends: 81 [2018-09-30 10:32:54,105 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 10:32:54,106 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-09-30 10:32:54,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 10:32:54,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 10:32:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 10:32:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-30 10:32:54,110 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-09-30 10:32:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:54,111 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-30 10:32:54,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:32:54,111 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-30 10:32:54,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 10:32:54,112 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:54,112 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:54,112 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:54,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:54,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-09-30 10:32:54,113 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:54,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:54,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:54,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:54,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:54,366 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:54,366 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:54,373 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:32:54,400 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 10:32:54,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:54,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:54,425 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:54,451 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:54,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 10:32:54,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 10:32:54,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 10:32:54,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-09-30 10:32:54,453 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-09-30 10:32:54,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:54,504 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-30 10:32:54,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:32:54,505 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-09-30 10:32:54,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:54,506 INFO L225 Difference]: With dead ends: 85 [2018-09-30 10:32:54,506 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 10:32:54,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-09-30 10:32:54,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 10:32:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 10:32:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 10:32:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-30 10:32:54,510 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-09-30 10:32:54,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:54,511 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-30 10:32:54,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 10:32:54,511 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-30 10:32:54,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 10:32:54,512 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:54,512 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:54,512 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:54,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:54,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-09-30 10:32:54,512 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:54,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:54,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:54,513 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:54,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:54,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:54,825 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:54,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:54,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:54,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:54,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 10:32:54,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 10:32:54,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 10:32:54,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-09-30 10:32:54,895 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-09-30 10:32:54,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:54,977 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-30 10:32:54,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 10:32:54,979 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-09-30 10:32:54,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:54,980 INFO L225 Difference]: With dead ends: 89 [2018-09-30 10:32:54,980 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 10:32:54,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-09-30 10:32:54,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 10:32:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 10:32:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 10:32:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-30 10:32:54,984 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-09-30 10:32:54,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:54,984 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-30 10:32:54,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 10:32:54,984 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-30 10:32:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 10:32:54,985 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:54,985 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:54,985 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:54,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:54,986 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-09-30 10:32:54,986 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:54,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:54,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:54,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:32:54,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:55,276 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:55,276 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 [2018-09-30 10:32:55,284 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:32:55,300 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:32:55,301 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:55,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:55,358 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:55,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 10:32:55,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 10:32:55,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 10:32:55,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-09-30 10:32:55,360 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-09-30 10:32:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:55,550 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-30 10:32:55,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:32:55,552 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-09-30 10:32:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:55,553 INFO L225 Difference]: With dead ends: 93 [2018-09-30 10:32:55,553 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 10:32:55,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2018-09-30 10:32:55,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 10:32:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 10:32:55,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 10:32:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-30 10:32:55,557 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-09-30 10:32:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:55,557 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-30 10:32:55,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 10:32:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-30 10:32:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 10:32:55,558 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:55,559 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:55,559 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:55,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:55,559 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-09-30 10:32:55,560 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:55,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:55,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:55,561 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:55,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:56,309 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:56,309 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:56,323 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:32:56,399 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 10:32:56,400 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:56,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:56,451 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:56,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 10:32:56,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 10:32:56,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 10:32:56,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-09-30 10:32:56,453 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-09-30 10:32:56,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:56,692 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-30 10:32:56,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 10:32:56,692 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-09-30 10:32:56,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:56,692 INFO L225 Difference]: With dead ends: 97 [2018-09-30 10:32:56,693 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 10:32:56,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2018-09-30 10:32:56,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 10:32:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 10:32:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 10:32:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-30 10:32:56,695 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-09-30 10:32:56,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:56,695 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-30 10:32:56,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 10:32:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-30 10:32:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 10:32:56,696 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:56,696 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:56,696 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:56,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-09-30 10:32:56,696 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:56,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:56,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:56,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:56,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:57,875 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:57,875 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:57,886 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:32:57,909 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:32:57,909 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:57,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:57,929 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:57,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:57,950 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 10:32:57,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 10:32:57,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 10:32:57,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-09-30 10:32:57,951 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-09-30 10:32:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:57,995 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-30 10:32:57,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:32:57,995 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-09-30 10:32:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:57,996 INFO L225 Difference]: With dead ends: 101 [2018-09-30 10:32:57,996 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 10:32:57,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2018-09-30 10:32:57,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 10:32:57,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 10:32:57,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 10:32:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-30 10:32:58,000 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-09-30 10:32:58,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:58,000 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-30 10:32:58,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 10:32:58,001 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-30 10:32:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:32:58,001 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:58,001 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:58,002 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:58,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-09-30 10:32:58,002 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:58,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:58,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:58,003 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:58,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:58,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:58,332 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:58,342 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:32:58,387 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 10:32:58,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:58,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:58,442 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:58,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 10:32:58,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 10:32:58,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 10:32:58,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-09-30 10:32:58,443 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-09-30 10:32:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:58,555 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-30 10:32:58,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 10:32:58,556 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-09-30 10:32:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:58,557 INFO L225 Difference]: With dead ends: 105 [2018-09-30 10:32:58,557 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 10:32:58,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2018-09-30 10:32:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 10:32:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 10:32:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 10:32:58,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-30 10:32:58,560 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-09-30 10:32:58,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:58,560 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-30 10:32:58,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 10:32:58,560 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-30 10:32:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 10:32:58,561 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:58,561 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:58,561 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:58,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:58,562 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-09-30 10:32:58,562 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:58,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:58,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:58,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:58,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:32:59,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:59,283 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:32:59,284 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:32:59,292 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:32:59,318 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 10:32:59,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:32:59,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:32:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:32:59,359 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:32:59,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 10:32:59,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 10:32:59,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 10:32:59,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-09-30 10:32:59,361 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-09-30 10:32:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:32:59,410 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-30 10:32:59,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:32:59,410 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-09-30 10:32:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:32:59,411 INFO L225 Difference]: With dead ends: 109 [2018-09-30 10:32:59,411 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 10:32:59,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2018-09-30 10:32:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 10:32:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 10:32:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 10:32:59,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-30 10:32:59,416 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-09-30 10:32:59,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:32:59,416 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-30 10:32:59,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 10:32:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-30 10:32:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 10:32:59,417 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:32:59,417 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-09-30 10:32:59,417 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:32:59,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:32:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-09-30 10:32:59,418 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:32:59,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:32:59,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:59,419 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:32:59,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:32:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:00,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:00,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:00,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:00,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:00,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:00,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 10:33:00,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 10:33:00,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 10:33:00,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-09-30 10:33:00,618 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-09-30 10:33:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:00,676 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-30 10:33:00,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 10:33:00,677 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-09-30 10:33:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:00,678 INFO L225 Difference]: With dead ends: 113 [2018-09-30 10:33:00,678 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 10:33:00,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2018-09-30 10:33:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 10:33:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 10:33:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 10:33:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-30 10:33:00,682 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-09-30 10:33:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:00,682 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-30 10:33:00,682 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 10:33:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-30 10:33:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 10:33:00,683 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:00,683 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:00,683 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:00,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-09-30 10:33:00,683 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:00,684 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:00,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:00,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:00,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:01,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:01,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:01,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:01,630 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:33:01,656 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:33:01,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:01,659 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:01,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:01,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 10:33:01,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 10:33:01,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 10:33:01,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-09-30 10:33:01,719 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-09-30 10:33:01,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:01,850 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-30 10:33:01,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:33:01,851 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-09-30 10:33:01,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:01,852 INFO L225 Difference]: With dead ends: 117 [2018-09-30 10:33:01,853 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 10:33:01,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2018-09-30 10:33:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 10:33:01,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 10:33:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 10:33:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-30 10:33:01,857 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-09-30 10:33:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:01,857 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-30 10:33:01,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 10:33:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-30 10:33:01,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 10:33:01,858 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:01,858 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:01,858 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:01,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:01,858 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-09-30 10:33:01,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:01,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:01,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:01,859 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:01,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:02,444 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:02,444 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:02,453 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:33:02,485 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 10:33:02,485 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:02,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:02,538 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:02,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 10:33:02,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 10:33:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 10:33:02,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-09-30 10:33:02,539 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-09-30 10:33:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:02,600 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-30 10:33:02,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 10:33:02,601 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-09-30 10:33:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:02,602 INFO L225 Difference]: With dead ends: 121 [2018-09-30 10:33:02,602 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 10:33:02,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2018-09-30 10:33:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 10:33:02,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 10:33:02,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:33:02,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-30 10:33:02,607 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-09-30 10:33:02,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:02,607 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-30 10:33:02,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 10:33:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-30 10:33:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 10:33:02,608 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:02,608 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:02,609 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:02,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:02,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-09-30 10:33:02,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:02,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:02,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:02,610 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:02,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:03,169 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:03,169 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:03,179 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:33:03,203 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:33:03,204 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:03,206 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:03,255 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:03,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 10:33:03,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 10:33:03,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 10:33:03,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-09-30 10:33:03,256 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-09-30 10:33:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:03,343 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-30 10:33:03,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 10:33:03,343 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-09-30 10:33:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:03,345 INFO L225 Difference]: With dead ends: 125 [2018-09-30 10:33:03,345 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 10:33:03,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2018-09-30 10:33:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 10:33:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 10:33:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 10:33:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-30 10:33:03,349 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-09-30 10:33:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:03,349 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-30 10:33:03,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 10:33:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-30 10:33:03,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 10:33:03,350 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:03,350 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:03,351 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:03,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:03,351 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-09-30 10:33:03,351 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:03,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:03,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:03,352 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:03,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:04,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:04,038 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:04,045 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:33:04,082 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 10:33:04,082 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:04,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:04,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:04,125 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:04,125 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 10:33:04,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:33:04,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:33:04,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-30 10:33:04,126 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-09-30 10:33:04,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:04,254 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-30 10:33:04,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:33:04,255 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-09-30 10:33:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:04,256 INFO L225 Difference]: With dead ends: 129 [2018-09-30 10:33:04,256 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 10:33:04,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2018-09-30 10:33:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 10:33:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 10:33:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 10:33:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-30 10:33:04,261 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-09-30 10:33:04,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:04,261 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-30 10:33:04,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:33:04,261 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-30 10:33:04,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 10:33:04,262 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:04,262 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:04,262 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:04,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:04,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-09-30 10:33:04,262 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:04,263 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:04,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:04,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:04,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:04,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:04,754 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:04,761 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:33:04,802 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 10:33:04,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:04,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:04,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:04,849 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 10:33:04,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 10:33:04,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 10:33:04,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-09-30 10:33:04,850 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-09-30 10:33:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:04,930 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-30 10:33:04,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 10:33:04,931 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-09-30 10:33:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:04,931 INFO L225 Difference]: With dead ends: 133 [2018-09-30 10:33:04,931 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 10:33:04,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2018-09-30 10:33:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 10:33:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 10:33:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 10:33:04,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-30 10:33:04,935 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-09-30 10:33:04,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:04,935 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-30 10:33:04,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 10:33:04,936 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-30 10:33:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 10:33:04,936 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:04,936 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:04,937 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:04,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-09-30 10:33:04,937 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:04,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:04,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:04,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:04,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:05,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:05,521 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:05,521 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:05,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:05,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:05,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:05,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 10:33:05,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 10:33:05,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 10:33:05,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-09-30 10:33:05,649 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-09-30 10:33:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:05,913 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-30 10:33:05,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:33:05,913 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-09-30 10:33:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:05,914 INFO L225 Difference]: With dead ends: 137 [2018-09-30 10:33:05,914 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 10:33:05,915 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2018-09-30 10:33:05,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 10:33:05,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 10:33:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 10:33:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-30 10:33:05,918 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-09-30 10:33:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:05,919 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-30 10:33:05,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 10:33:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-30 10:33:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 10:33:05,920 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:05,920 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:05,920 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:05,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:05,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-09-30 10:33:05,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:05,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:05,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:05,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:05,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:06,529 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:06,529 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:06,536 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:33:06,561 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:33:06,561 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:06,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:06,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:06,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 10:33:06,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 10:33:06,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 10:33:06,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-30 10:33:06,616 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-09-30 10:33:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:06,702 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-30 10:33:06,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:33:06,702 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-09-30 10:33:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:06,703 INFO L225 Difference]: With dead ends: 141 [2018-09-30 10:33:06,704 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 10:33:06,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2018-09-30 10:33:06,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 10:33:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 10:33:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 10:33:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-30 10:33:06,708 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-09-30 10:33:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:06,708 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-30 10:33:06,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 10:33:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-30 10:33:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 10:33:06,709 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:06,709 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:06,709 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:06,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:06,709 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-09-30 10:33:06,710 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:06,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:06,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:06,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:06,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:07,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:07,243 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:07,243 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:07,252 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:33:07,321 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 10:33:07,321 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:07,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:07,384 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:07,384 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 10:33:07,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 10:33:07,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 10:33:07,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 10:33:07,386 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-09-30 10:33:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:07,576 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-30 10:33:07,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 10:33:07,577 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-09-30 10:33:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:07,578 INFO L225 Difference]: With dead ends: 145 [2018-09-30 10:33:07,578 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 10:33:07,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2018-09-30 10:33:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 10:33:07,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 10:33:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 10:33:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-30 10:33:07,584 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-09-30 10:33:07,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:07,585 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-30 10:33:07,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 10:33:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-30 10:33:07,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 10:33:07,585 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:07,586 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:07,586 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:07,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-09-30 10:33:07,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:07,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:07,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:07,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:07,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:08,521 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:08,521 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:08,528 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:33:08,559 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:33:08,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:08,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:08,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:08,604 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:08,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 10:33:08,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 10:33:08,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 10:33:08,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-30 10:33:08,606 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-09-30 10:33:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:08,733 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-30 10:33:08,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 10:33:08,733 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-09-30 10:33:08,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:08,734 INFO L225 Difference]: With dead ends: 149 [2018-09-30 10:33:08,734 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 10:33:08,735 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2018-09-30 10:33:08,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 10:33:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 10:33:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 10:33:08,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-30 10:33:08,738 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-09-30 10:33:08,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:08,738 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-30 10:33:08,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 10:33:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-30 10:33:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 10:33:08,739 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:08,740 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:08,740 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:08,740 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:08,740 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-09-30 10:33:08,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:08,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:08,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:08,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:08,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:09,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:09,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:09,595 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:09,603 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:33:09,687 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 10:33:09,688 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:09,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:09,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:09,752 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:09,752 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 10:33:09,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 10:33:09,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 10:33:09,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-30 10:33:09,753 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-09-30 10:33:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:09,904 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-09-30 10:33:09,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 10:33:09,905 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-09-30 10:33:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:09,907 INFO L225 Difference]: With dead ends: 153 [2018-09-30 10:33:09,907 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 10:33:09,908 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2018-09-30 10:33:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 10:33:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 10:33:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 10:33:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-09-30 10:33:09,912 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-09-30 10:33:09,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:09,912 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-09-30 10:33:09,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 10:33:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-09-30 10:33:09,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-30 10:33:09,913 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:09,914 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:09,914 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:09,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:09,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-09-30 10:33:09,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:09,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:09,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:09,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:09,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:09,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:10,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:10,522 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:10,529 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:33:10,585 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 10:33:10,585 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:10,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:10,648 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:10,648 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 10:33:10,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 10:33:10,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 10:33:10,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-30 10:33:10,649 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-09-30 10:33:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:10,805 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-09-30 10:33:10,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 10:33:10,806 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-09-30 10:33:10,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:10,807 INFO L225 Difference]: With dead ends: 157 [2018-09-30 10:33:10,807 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 10:33:10,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2018-09-30 10:33:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 10:33:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 10:33:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 10:33:10,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-09-30 10:33:10,812 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-09-30 10:33:10,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:10,813 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-09-30 10:33:10,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 10:33:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-09-30 10:33:10,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-30 10:33:10,814 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:10,814 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:10,814 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:10,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:10,814 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-09-30 10:33:10,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:10,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:10,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:10,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:10,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:11,680 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:11,680 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:11,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:11,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:11,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:11,783 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:11,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 10:33:11,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 10:33:11,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 10:33:11,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 10:33:11,785 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-09-30 10:33:12,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:12,238 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-09-30 10:33:12,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 10:33:12,239 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-09-30 10:33:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:12,240 INFO L225 Difference]: With dead ends: 161 [2018-09-30 10:33:12,240 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 10:33:12,242 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2018-09-30 10:33:12,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 10:33:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-30 10:33:12,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 10:33:12,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-09-30 10:33:12,245 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-09-30 10:33:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:12,245 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-09-30 10:33:12,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 10:33:12,245 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-09-30 10:33:12,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 10:33:12,246 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:12,246 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:12,246 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:12,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:12,247 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-09-30 10:33:12,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:12,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:12,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:12,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:12,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:14,208 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:14,208 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:14,216 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:33:14,248 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:33:14,248 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:14,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:14,317 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:14,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 10:33:14,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 10:33:14,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 10:33:14,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-30 10:33:14,318 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-09-30 10:33:15,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:15,242 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-09-30 10:33:15,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:33:15,243 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-09-30 10:33:15,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:15,244 INFO L225 Difference]: With dead ends: 165 [2018-09-30 10:33:15,244 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 10:33:15,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2018-09-30 10:33:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 10:33:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 10:33:15,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 10:33:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-09-30 10:33:15,248 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-09-30 10:33:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:15,248 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-09-30 10:33:15,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 10:33:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-09-30 10:33:15,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-30 10:33:15,249 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:15,249 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:15,250 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:15,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:15,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-09-30 10:33:15,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:15,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:15,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:15,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:15,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:16,150 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:16,150 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:16,174 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:33:16,230 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 10:33:16,230 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:16,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:16,290 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:16,290 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 10:33:16,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 10:33:16,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 10:33:16,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-30 10:33:16,291 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-09-30 10:33:16,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:16,399 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-09-30 10:33:16,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 10:33:16,399 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-09-30 10:33:16,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:16,404 INFO L225 Difference]: With dead ends: 169 [2018-09-30 10:33:16,404 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 10:33:16,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2018-09-30 10:33:16,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 10:33:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 10:33:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 10:33:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-09-30 10:33:16,408 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-09-30 10:33:16,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:16,408 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-09-30 10:33:16,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 10:33:16,409 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-09-30 10:33:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-30 10:33:16,409 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:16,410 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:16,410 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:16,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:16,410 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-09-30 10:33:16,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:16,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:16,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:16,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:16,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:17,186 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:17,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:17,194 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:33:17,228 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:33:17,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:17,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:17,277 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:17,277 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 10:33:17,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 10:33:17,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 10:33:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-30 10:33:17,279 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-09-30 10:33:17,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:17,413 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-09-30 10:33:17,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 10:33:17,413 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-09-30 10:33:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:17,415 INFO L225 Difference]: With dead ends: 173 [2018-09-30 10:33:17,415 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 10:33:17,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2018-09-30 10:33:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 10:33:17,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-30 10:33:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-30 10:33:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-09-30 10:33:17,419 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-09-30 10:33:17,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:17,419 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-09-30 10:33:17,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 10:33:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-09-30 10:33:17,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 10:33:17,421 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:17,421 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:17,421 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:17,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:17,421 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-09-30 10:33:17,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:17,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:17,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:17,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:17,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:18,191 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:18,191 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:18,198 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:33:18,262 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 10:33:18,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:18,265 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:18,325 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:18,326 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 10:33:18,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:33:18,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:33:18,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 10:33:18,328 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-09-30 10:33:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:18,827 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-09-30 10:33:18,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 10:33:18,827 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-09-30 10:33:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:18,829 INFO L225 Difference]: With dead ends: 177 [2018-09-30 10:33:18,829 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 10:33:18,830 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2018-09-30 10:33:18,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 10:33:18,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 10:33:18,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 10:33:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-09-30 10:33:18,833 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-09-30 10:33:18,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:18,833 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-09-30 10:33:18,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:33:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-09-30 10:33:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-30 10:33:18,835 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:18,835 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:18,835 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:18,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:18,836 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-09-30 10:33:18,836 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:18,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:18,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:18,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:18,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:19,740 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:19,740 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:19,747 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:33:19,800 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 10:33:19,801 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:19,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:19,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:19,877 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:19,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 10:33:19,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 10:33:19,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 10:33:19,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-30 10:33:19,879 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-09-30 10:33:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:20,085 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-09-30 10:33:20,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 10:33:20,086 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-09-30 10:33:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:20,087 INFO L225 Difference]: With dead ends: 181 [2018-09-30 10:33:20,087 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 10:33:20,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2018-09-30 10:33:20,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 10:33:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-30 10:33:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 10:33:20,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-09-30 10:33:20,092 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-09-30 10:33:20,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:20,092 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-09-30 10:33:20,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 10:33:20,093 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-09-30 10:33:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 10:33:20,093 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:20,094 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:20,094 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:20,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:20,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-09-30 10:33:20,094 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:20,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:20,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:20,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:20,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:22,277 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:22,277 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:22,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:22,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:22,373 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:22,373 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 10:33:22,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 10:33:22,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 10:33:22,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-09-30 10:33:22,374 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-09-30 10:33:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:22,700 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-09-30 10:33:22,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 10:33:22,700 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-09-30 10:33:22,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:22,702 INFO L225 Difference]: With dead ends: 185 [2018-09-30 10:33:22,702 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 10:33:22,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2018-09-30 10:33:22,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 10:33:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-30 10:33:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-30 10:33:22,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-09-30 10:33:22,705 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-09-30 10:33:22,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:22,706 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-09-30 10:33:22,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 10:33:22,706 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-09-30 10:33:22,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 10:33:22,707 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:22,707 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:22,707 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:22,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:22,708 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-09-30 10:33:22,708 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:22,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:22,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:22,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:22,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:23,927 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:23,927 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:23,940 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:33:23,978 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:33:23,979 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:23,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:24,031 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:24,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 10:33:24,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 10:33:24,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 10:33:24,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-30 10:33:24,032 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-09-30 10:33:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:24,153 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-09-30 10:33:24,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:33:24,153 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-09-30 10:33:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:24,154 INFO L225 Difference]: With dead ends: 189 [2018-09-30 10:33:24,154 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 10:33:24,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2018-09-30 10:33:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 10:33:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 10:33:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 10:33:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-09-30 10:33:24,157 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-09-30 10:33:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:24,158 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-09-30 10:33:24,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 10:33:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-09-30 10:33:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-30 10:33:24,159 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:24,159 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:24,159 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:24,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:24,160 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-09-30 10:33:24,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:24,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:24,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:24,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:24,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:26,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:26,387 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:26,387 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:26,394 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:33:26,450 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 10:33:26,450 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:26,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:26,527 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:26,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 10:33:26,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:33:26,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:33:26,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 10:33:26,529 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-09-30 10:33:26,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:26,650 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-09-30 10:33:26,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:33:26,650 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-09-30 10:33:26,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:26,652 INFO L225 Difference]: With dead ends: 193 [2018-09-30 10:33:26,653 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 10:33:26,654 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2018-09-30 10:33:26,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 10:33:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 10:33:26,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 10:33:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-09-30 10:33:26,657 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-09-30 10:33:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:26,658 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-09-30 10:33:26,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:33:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-09-30 10:33:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-30 10:33:26,659 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:26,659 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:26,659 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:26,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:26,660 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-09-30 10:33:26,660 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:26,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:26,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:26,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:26,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:26,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:28,198 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:28,198 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:28,207 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:33:28,247 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:33:28,247 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:28,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:28,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:28,332 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 10:33:28,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 10:33:28,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 10:33:28,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-09-30 10:33:28,333 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-09-30 10:33:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:28,487 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-09-30 10:33:28,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:33:28,487 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-09-30 10:33:28,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:28,489 INFO L225 Difference]: With dead ends: 197 [2018-09-30 10:33:28,489 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 10:33:28,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2018-09-30 10:33:28,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 10:33:28,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-30 10:33:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-30 10:33:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-09-30 10:33:28,493 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-09-30 10:33:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:28,494 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-09-30 10:33:28,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 10:33:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-09-30 10:33:28,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 10:33:28,495 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:28,495 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:28,495 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:28,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:28,496 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-09-30 10:33:28,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:28,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:28,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:28,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:28,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:30,085 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:30,085 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:30,093 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:33:30,663 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 10:33:30,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:30,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:30,764 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:30,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 10:33:30,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 10:33:30,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 10:33:30,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-09-30 10:33:30,766 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-09-30 10:33:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:31,126 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-09-30 10:33:31,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 10:33:31,126 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-09-30 10:33:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:31,128 INFO L225 Difference]: With dead ends: 201 [2018-09-30 10:33:31,128 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 10:33:31,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2018-09-30 10:33:31,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 10:33:31,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 10:33:31,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 10:33:31,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-09-30 10:33:31,134 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-09-30 10:33:31,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:31,134 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-09-30 10:33:31,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 10:33:31,134 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-09-30 10:33:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 10:33:31,135 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:31,136 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:31,136 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:31,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:31,136 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-09-30 10:33:31,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:31,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:31,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:31,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:31,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:32,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:32,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:32,480 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:33:32,538 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 10:33:32,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:32,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:32,617 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:32,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 10:33:32,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 10:33:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 10:33:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-09-30 10:33:32,618 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-09-30 10:33:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:32,728 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-09-30 10:33:32,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 10:33:32,729 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-09-30 10:33:32,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:32,730 INFO L225 Difference]: With dead ends: 205 [2018-09-30 10:33:32,730 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 10:33:32,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2018-09-30 10:33:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 10:33:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 10:33:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 10:33:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-09-30 10:33:32,734 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-09-30 10:33:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:32,735 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-09-30 10:33:32,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 10:33:32,735 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-09-30 10:33:32,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-30 10:33:32,735 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:32,736 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:32,736 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:32,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:32,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-09-30 10:33:32,736 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:32,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:32,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:32,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:32,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:34,088 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:34,088 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:34,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:34,138 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:34,199 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:34,200 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 10:33:34,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 10:33:34,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 10:33:34,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 10:33:34,202 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-09-30 10:33:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:34,346 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-09-30 10:33:34,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 10:33:34,346 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-09-30 10:33:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:34,348 INFO L225 Difference]: With dead ends: 209 [2018-09-30 10:33:34,348 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 10:33:34,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2018-09-30 10:33:34,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 10:33:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-30 10:33:34,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-30 10:33:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-09-30 10:33:34,351 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-09-30 10:33:34,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:34,351 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-09-30 10:33:34,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 10:33:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-09-30 10:33:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 10:33:34,352 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:34,353 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:34,353 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:34,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:34,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-09-30 10:33:34,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:34,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:34,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:34,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:34,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:35,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:35,544 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:35,544 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:35,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:33:35,603 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:33:35,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:35,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:35,697 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:35,698 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 10:33:35,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 10:33:35,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 10:33:35,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-30 10:33:35,699 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-09-30 10:33:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:36,097 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-09-30 10:33:36,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:33:36,098 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-09-30 10:33:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:36,099 INFO L225 Difference]: With dead ends: 213 [2018-09-30 10:33:36,100 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 10:33:36,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2018-09-30 10:33:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 10:33:36,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 10:33:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 10:33:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-09-30 10:33:36,104 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-09-30 10:33:36,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:36,105 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-09-30 10:33:36,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 10:33:36,105 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-09-30 10:33:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-30 10:33:36,106 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:36,106 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:36,106 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:36,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-09-30 10:33:36,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:36,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:36,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:36,108 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:36,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:37,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:37,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:37,478 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:37,487 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:33:37,559 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 10:33:37,559 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:37,562 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:37,651 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:37,651 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 10:33:37,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 10:33:37,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 10:33:37,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-09-30 10:33:37,652 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-09-30 10:33:37,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:37,855 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-09-30 10:33:37,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 10:33:37,855 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-09-30 10:33:37,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:37,857 INFO L225 Difference]: With dead ends: 217 [2018-09-30 10:33:37,857 INFO L226 Difference]: Without dead ends: 215 [2018-09-30 10:33:37,857 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2018-09-30 10:33:37,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-30 10:33:37,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-30 10:33:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-30 10:33:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-09-30 10:33:37,860 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-09-30 10:33:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:37,860 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-09-30 10:33:37,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 10:33:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-09-30 10:33:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-30 10:33:37,862 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:37,862 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:37,862 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:37,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-09-30 10:33:37,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:37,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:37,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:37,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:37,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:39,565 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:39,565 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:39,572 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:33:39,612 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:33:39,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:39,615 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:39,699 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:39,699 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 10:33:39,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 10:33:39,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 10:33:39,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-09-30 10:33:39,700 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-09-30 10:33:39,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:39,896 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-09-30 10:33:39,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 10:33:39,896 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-09-30 10:33:39,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:39,898 INFO L225 Difference]: With dead ends: 221 [2018-09-30 10:33:39,898 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 10:33:39,898 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2018-09-30 10:33:39,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 10:33:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-30 10:33:39,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 10:33:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-09-30 10:33:39,902 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-09-30 10:33:39,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:39,902 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-09-30 10:33:39,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 10:33:39,903 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-09-30 10:33:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 10:33:39,904 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:39,904 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:39,904 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:39,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:39,904 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-09-30 10:33:39,905 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:39,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:39,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:39,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:39,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:41,246 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:41,246 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:41,255 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:33:41,324 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 10:33:41,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:41,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:41,410 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:41,411 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 10:33:41,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:33:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:33:41,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 10:33:41,412 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-09-30 10:33:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:41,500 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-09-30 10:33:41,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 10:33:41,501 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-09-30 10:33:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:41,501 INFO L225 Difference]: With dead ends: 225 [2018-09-30 10:33:41,502 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 10:33:41,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2018-09-30 10:33:41,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 10:33:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-30 10:33:41,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-30 10:33:41,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-09-30 10:33:41,504 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-09-30 10:33:41,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:41,505 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-09-30 10:33:41,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:33:41,505 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-09-30 10:33:41,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-30 10:33:41,506 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:41,506 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:41,506 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:41,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:41,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-09-30 10:33:41,507 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:41,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:41,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:41,507 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:41,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:42,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:42,687 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:42,694 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:33:42,781 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 10:33:42,781 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:42,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:42,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:42,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 10:33:42,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 10:33:42,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 10:33:42,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-09-30 10:33:42,877 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-09-30 10:33:43,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:43,181 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-09-30 10:33:43,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:33:43,181 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-09-30 10:33:43,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:43,183 INFO L225 Difference]: With dead ends: 229 [2018-09-30 10:33:43,183 INFO L226 Difference]: Without dead ends: 227 [2018-09-30 10:33:43,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2018-09-30 10:33:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-30 10:33:43,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-30 10:33:43,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-30 10:33:43,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-09-30 10:33:43,187 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-09-30 10:33:43,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:43,188 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-09-30 10:33:43,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 10:33:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-09-30 10:33:43,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-30 10:33:43,189 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:43,189 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:43,189 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:43,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:43,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-09-30 10:33:43,190 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:43,190 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:43,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:43,191 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:43,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:44,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:44,400 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:44,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:44,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:44,541 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:44,542 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 10:33:44,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 10:33:44,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 10:33:44,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-09-30 10:33:44,543 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-09-30 10:33:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:45,427 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-09-30 10:33:45,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 10:33:45,427 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-09-30 10:33:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:45,429 INFO L225 Difference]: With dead ends: 233 [2018-09-30 10:33:45,429 INFO L226 Difference]: Without dead ends: 231 [2018-09-30 10:33:45,429 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2018-09-30 10:33:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-30 10:33:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-30 10:33:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-30 10:33:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-09-30 10:33:45,433 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-09-30 10:33:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:45,433 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-09-30 10:33:45,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 10:33:45,433 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-09-30 10:33:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-30 10:33:45,435 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:45,435 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:45,435 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:45,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:45,435 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-09-30 10:33:45,435 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:45,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:45,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:45,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:45,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:46,813 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:46,813 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:46,821 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:33:46,875 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:33:46,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:46,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:46,944 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:46,944 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 10:33:46,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 10:33:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 10:33:46,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-09-30 10:33:46,945 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-09-30 10:33:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:47,083 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-09-30 10:33:47,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 10:33:47,083 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-09-30 10:33:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:47,085 INFO L225 Difference]: With dead ends: 237 [2018-09-30 10:33:47,085 INFO L226 Difference]: Without dead ends: 235 [2018-09-30 10:33:47,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2018-09-30 10:33:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-30 10:33:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-30 10:33:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-30 10:33:47,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-09-30 10:33:47,088 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-09-30 10:33:47,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:47,088 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-09-30 10:33:47,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 10:33:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-09-30 10:33:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-30 10:33:47,089 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:47,090 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:47,090 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:47,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:47,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-09-30 10:33:47,090 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:47,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:47,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:47,091 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:47,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:48,334 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:48,334 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:48,341 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:33:48,424 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-30 10:33:48,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:48,427 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:48,528 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:48,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 10:33:48,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 10:33:48,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 10:33:48,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 10:33:48,530 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-09-30 10:33:48,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:48,745 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-09-30 10:33:48,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 10:33:48,746 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-09-30 10:33:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:48,748 INFO L225 Difference]: With dead ends: 241 [2018-09-30 10:33:48,748 INFO L226 Difference]: Without dead ends: 239 [2018-09-30 10:33:48,748 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2018-09-30 10:33:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-30 10:33:48,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-30 10:33:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 10:33:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-09-30 10:33:48,751 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-09-30 10:33:48,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:48,751 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-09-30 10:33:48,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 10:33:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-09-30 10:33:48,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 10:33:48,752 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:48,753 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:48,753 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:48,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:48,753 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-09-30 10:33:48,753 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:48,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:48,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:48,754 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:48,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:50,496 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:50,496 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:50,506 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:33:50,565 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:33:50,565 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:50,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:50,662 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:50,663 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 10:33:50,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 10:33:50,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 10:33:50,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-09-30 10:33:50,664 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-09-30 10:33:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:50,872 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-09-30 10:33:50,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 10:33:50,872 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-09-30 10:33:50,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:50,874 INFO L225 Difference]: With dead ends: 245 [2018-09-30 10:33:50,874 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 10:33:50,874 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2018-09-30 10:33:50,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 10:33:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-30 10:33:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-30 10:33:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-09-30 10:33:50,878 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-09-30 10:33:50,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:50,878 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-09-30 10:33:50,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 10:33:50,878 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-09-30 10:33:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-30 10:33:50,879 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:50,880 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:50,880 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:50,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:50,880 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-09-30 10:33:50,880 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:50,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:50,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:50,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:50,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:52,310 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:52,310 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:52,318 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:33:52,395 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-30 10:33:52,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:52,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:52,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:52,464 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:52,465 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 10:33:52,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 10:33:52,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 10:33:52,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-09-30 10:33:52,466 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-09-30 10:33:52,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:52,629 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-09-30 10:33:52,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 10:33:52,630 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-09-30 10:33:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:52,632 INFO L225 Difference]: With dead ends: 249 [2018-09-30 10:33:52,632 INFO L226 Difference]: Without dead ends: 247 [2018-09-30 10:33:52,632 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2018-09-30 10:33:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-30 10:33:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-30 10:33:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-30 10:33:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-09-30 10:33:52,636 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-09-30 10:33:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:52,636 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-09-30 10:33:52,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 10:33:52,636 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-09-30 10:33:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-30 10:33:52,638 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:52,638 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:52,638 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:52,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:52,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-09-30 10:33:52,639 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:52,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:52,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:52,639 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:52,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:54,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:54,140 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:54,140 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:54,149 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:33:54,229 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 10:33:54,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:54,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:54,334 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:54,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 10:33:54,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 10:33:54,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 10:33:54,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-09-30 10:33:54,336 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-09-30 10:33:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:54,517 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-09-30 10:33:54,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 10:33:54,517 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-09-30 10:33:54,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:54,519 INFO L225 Difference]: With dead ends: 253 [2018-09-30 10:33:54,519 INFO L226 Difference]: Without dead ends: 251 [2018-09-30 10:33:54,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2018-09-30 10:33:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-30 10:33:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-30 10:33:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-30 10:33:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-09-30 10:33:54,522 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-09-30 10:33:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:54,523 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-09-30 10:33:54,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 10:33:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-09-30 10:33:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-30 10:33:54,524 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:54,524 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:54,524 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:54,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:54,524 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-09-30 10:33:54,524 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:54,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:54,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:54,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:54,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:56,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:56,244 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:56,244 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:56,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:56,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:56,396 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:56,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 10:33:56,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 10:33:56,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 10:33:56,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 10:33:56,398 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-09-30 10:33:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:56,560 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-09-30 10:33:56,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 10:33:56,560 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-09-30 10:33:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:56,562 INFO L225 Difference]: With dead ends: 257 [2018-09-30 10:33:56,562 INFO L226 Difference]: Without dead ends: 255 [2018-09-30 10:33:56,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2018-09-30 10:33:56,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-30 10:33:56,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-30 10:33:56,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-30 10:33:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-09-30 10:33:56,566 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-09-30 10:33:56,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:56,566 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-09-30 10:33:56,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 10:33:56,566 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-09-30 10:33:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-30 10:33:56,567 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:56,567 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:56,567 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:56,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:56,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-09-30 10:33:56,568 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:56,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:56,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:56,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:33:56,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:33:58,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:58,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:33:58,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:33:58,080 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:33:58,129 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:33:58,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:33:58,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:33:58,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:33:58,205 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:33:58,205 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 10:33:58,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 10:33:58,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 10:33:58,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-09-30 10:33:58,207 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-09-30 10:33:58,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:33:58,361 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-09-30 10:33:58,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 10:33:58,362 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-09-30 10:33:58,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:33:58,363 INFO L225 Difference]: With dead ends: 261 [2018-09-30 10:33:58,363 INFO L226 Difference]: Without dead ends: 259 [2018-09-30 10:33:58,364 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2018-09-30 10:33:58,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-30 10:33:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-30 10:33:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 10:33:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-09-30 10:33:58,368 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-09-30 10:33:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:33:58,368 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-09-30 10:33:58,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 10:33:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-09-30 10:33:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 10:33:58,370 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:33:58,370 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-09-30 10:33:58,370 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:33:58,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:33:58,371 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-09-30 10:33:58,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:33:58,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:33:58,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:58,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:33:58,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:33:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:00,303 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:00,303 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:00,311 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:34:00,398 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-30 10:34:00,399 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:00,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:00,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:00,473 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:00,474 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 10:34:00,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 10:34:00,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 10:34:00,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-09-30 10:34:00,475 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-09-30 10:34:00,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:00,662 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-09-30 10:34:00,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 10:34:00,663 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-09-30 10:34:00,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:00,664 INFO L225 Difference]: With dead ends: 265 [2018-09-30 10:34:00,665 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 10:34:00,665 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2018-09-30 10:34:00,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 10:34:00,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-30 10:34:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-30 10:34:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-09-30 10:34:00,669 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-09-30 10:34:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:00,669 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-09-30 10:34:00,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 10:34:00,670 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-09-30 10:34:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-30 10:34:00,671 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:00,671 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:00,671 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:00,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-09-30 10:34:00,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:00,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:00,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:00,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:00,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:02,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:02,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:02,396 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:34:02,443 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:34:02,443 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:02,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:02,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:02,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 10:34:02,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 10:34:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 10:34:02,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-09-30 10:34:02,521 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-09-30 10:34:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:02,736 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-09-30 10:34:02,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 10:34:02,736 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-09-30 10:34:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:02,738 INFO L225 Difference]: With dead ends: 269 [2018-09-30 10:34:02,738 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 10:34:02,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2018-09-30 10:34:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 10:34:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-30 10:34:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-30 10:34:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-09-30 10:34:02,742 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-09-30 10:34:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:02,743 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-09-30 10:34:02,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 10:34:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-09-30 10:34:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-30 10:34:02,744 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:02,744 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:02,745 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:02,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:02,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-09-30 10:34:02,745 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:02,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:02,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:02,746 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:02,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:04,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:04,436 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:04,448 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:34:04,546 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-30 10:34:04,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:04,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:04,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:04,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 10:34:04,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 10:34:04,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 10:34:04,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 10:34:04,637 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-09-30 10:34:04,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:04,814 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-09-30 10:34:04,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 10:34:04,814 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-09-30 10:34:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:04,816 INFO L225 Difference]: With dead ends: 273 [2018-09-30 10:34:04,816 INFO L226 Difference]: Without dead ends: 271 [2018-09-30 10:34:04,816 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2018-09-30 10:34:04,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-30 10:34:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-30 10:34:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-30 10:34:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-09-30 10:34:04,822 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-09-30 10:34:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:04,822 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-09-30 10:34:04,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 10:34:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-09-30 10:34:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-30 10:34:04,824 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:04,824 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:04,824 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:04,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-09-30 10:34:04,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:04,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:04,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:04,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:04,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:06,798 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:06,798 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:06,806 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:34:06,897 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 10:34:06,897 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:06,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:06,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:06,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 10:34:06,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 10:34:06,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 10:34:06,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-09-30 10:34:06,985 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-09-30 10:34:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:07,172 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-09-30 10:34:07,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 10:34:07,173 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-09-30 10:34:07,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:07,174 INFO L225 Difference]: With dead ends: 277 [2018-09-30 10:34:07,175 INFO L226 Difference]: Without dead ends: 275 [2018-09-30 10:34:07,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2018-09-30 10:34:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-09-30 10:34:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-09-30 10:34:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-09-30 10:34:07,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-09-30 10:34:07,178 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-09-30 10:34:07,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:07,178 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-09-30 10:34:07,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 10:34:07,179 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-09-30 10:34:07,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-30 10:34:07,179 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:07,180 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:07,180 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:07,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:07,180 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-09-30 10:34:07,180 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:07,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:07,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:07,181 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:07,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:08,918 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:08,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:08,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:34:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:08,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:09,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:09,057 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:09,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 10:34:09,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 10:34:09,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 10:34:09,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-09-30 10:34:09,059 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-09-30 10:34:09,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:09,292 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-09-30 10:34:09,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 10:34:09,293 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-09-30 10:34:09,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:09,294 INFO L225 Difference]: With dead ends: 281 [2018-09-30 10:34:09,295 INFO L226 Difference]: Without dead ends: 279 [2018-09-30 10:34:09,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2415, Invalid=2415, Unknown=0, NotChecked=0, Total=4830 [2018-09-30 10:34:09,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-30 10:34:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-09-30 10:34:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-30 10:34:09,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-09-30 10:34:09,299 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-09-30 10:34:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:09,299 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-09-30 10:34:09,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 10:34:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-09-30 10:34:09,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-30 10:34:09,300 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:09,301 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:09,301 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:09,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:09,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-09-30 10:34:09,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:09,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:09,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:09,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:34:09,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:11,475 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:11,475 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:11,483 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:34:11,533 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:34:11,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:11,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:11,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:11,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 10:34:11,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 10:34:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 10:34:11,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-09-30 10:34:11,616 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-09-30 10:34:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:11,845 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-09-30 10:34:11,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 10:34:11,845 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-09-30 10:34:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:11,847 INFO L225 Difference]: With dead ends: 285 [2018-09-30 10:34:11,847 INFO L226 Difference]: Without dead ends: 283 [2018-09-30 10:34:11,848 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2018-09-30 10:34:11,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-30 10:34:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-09-30 10:34:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-09-30 10:34:11,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-09-30 10:34:11,851 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-09-30 10:34:11,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:11,852 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-09-30 10:34:11,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 10:34:11,852 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-09-30 10:34:11,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-30 10:34:11,853 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:11,853 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:11,853 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:11,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:11,853 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-09-30 10:34:11,853 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:11,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:11,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:11,854 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:11,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:13,691 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:13,691 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:13,698 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:34:13,797 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 10:34:13,797 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:13,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:13,929 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:13,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 10:34:13,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 10:34:13,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 10:34:13,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 10:34:13,931 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-09-30 10:34:14,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:14,197 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-09-30 10:34:14,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 10:34:14,197 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-09-30 10:34:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:14,199 INFO L225 Difference]: With dead ends: 289 [2018-09-30 10:34:14,199 INFO L226 Difference]: Without dead ends: 287 [2018-09-30 10:34:14,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2556, Invalid=2556, Unknown=0, NotChecked=0, Total=5112 [2018-09-30 10:34:14,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-09-30 10:34:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-09-30 10:34:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-09-30 10:34:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-09-30 10:34:14,202 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-09-30 10:34:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:14,202 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-09-30 10:34:14,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 10:34:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-09-30 10:34:14,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-30 10:34:14,203 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:14,204 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:14,204 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:14,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:14,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-09-30 10:34:14,204 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:14,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:14,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:14,205 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:14,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:16,282 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:16,282 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:16,289 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:34:16,346 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:34:16,346 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:16,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:16,411 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:16,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:16,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 10:34:16,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 10:34:16,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 10:34:16,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-09-30 10:34:16,433 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-09-30 10:34:16,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:16,640 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-09-30 10:34:16,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 10:34:16,640 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-09-30 10:34:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:16,642 INFO L225 Difference]: With dead ends: 293 [2018-09-30 10:34:16,642 INFO L226 Difference]: Without dead ends: 291 [2018-09-30 10:34:16,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2018-09-30 10:34:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-09-30 10:34:16,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-09-30 10:34:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-09-30 10:34:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-09-30 10:34:16,645 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-09-30 10:34:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:16,646 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-09-30 10:34:16,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 10:34:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-09-30 10:34:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-30 10:34:16,647 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:16,647 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:16,648 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:16,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:16,648 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-09-30 10:34:16,648 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:16,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:16,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:16,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:16,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:18,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:18,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:18,687 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:18,695 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:34:18,803 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-30 10:34:18,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:18,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:18,907 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:18,907 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 10:34:18,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 10:34:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 10:34:18,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-09-30 10:34:18,909 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-09-30 10:34:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:19,155 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-09-30 10:34:19,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 10:34:19,155 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-09-30 10:34:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:19,157 INFO L225 Difference]: With dead ends: 297 [2018-09-30 10:34:19,157 INFO L226 Difference]: Without dead ends: 295 [2018-09-30 10:34:19,158 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2701, Invalid=2701, Unknown=0, NotChecked=0, Total=5402 [2018-09-30 10:34:19,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-09-30 10:34:19,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-09-30 10:34:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-09-30 10:34:19,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-09-30 10:34:19,162 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-09-30 10:34:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:19,162 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-09-30 10:34:19,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 10:34:19,162 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-09-30 10:34:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-30 10:34:19,164 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:19,164 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:19,164 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:19,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:19,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-09-30 10:34:19,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:19,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:19,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:19,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:19,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:21,526 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:21,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:21,533 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:34:21,632 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 10:34:21,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:21,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:21,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:21,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 10:34:21,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 10:34:21,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 10:34:21,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-09-30 10:34:21,722 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-09-30 10:34:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:22,021 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-09-30 10:34:22,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 10:34:22,022 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-09-30 10:34:22,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:22,023 INFO L225 Difference]: With dead ends: 301 [2018-09-30 10:34:22,024 INFO L226 Difference]: Without dead ends: 299 [2018-09-30 10:34:22,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2018-09-30 10:34:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-09-30 10:34:22,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-09-30 10:34:22,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-30 10:34:22,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-09-30 10:34:22,027 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-09-30 10:34:22,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:22,027 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-09-30 10:34:22,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 10:34:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-09-30 10:34:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-30 10:34:22,029 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:22,029 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:22,029 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:22,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:22,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-09-30 10:34:22,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:22,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:22,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:22,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:22,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:24,043 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:24,043 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:24,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:34:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:24,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:24,175 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:24,195 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:24,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 10:34:24,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 10:34:24,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 10:34:24,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 10:34:24,197 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-09-30 10:34:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:24,488 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-09-30 10:34:24,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 10:34:24,488 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-09-30 10:34:24,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:24,490 INFO L225 Difference]: With dead ends: 305 [2018-09-30 10:34:24,490 INFO L226 Difference]: Without dead ends: 303 [2018-09-30 10:34:24,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2850, Invalid=2850, Unknown=0, NotChecked=0, Total=5700 [2018-09-30 10:34:24,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-30 10:34:24,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-09-30 10:34:24,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-09-30 10:34:24,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-09-30 10:34:24,493 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-09-30 10:34:24,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:24,494 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-09-30 10:34:24,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 10:34:24,494 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-09-30 10:34:24,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-30 10:34:24,495 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:24,495 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:24,495 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:24,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:24,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-09-30 10:34:24,496 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:24,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:24,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:24,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:34:24,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:26,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:26,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:26,822 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:34:26,880 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:34:26,881 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:26,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:26,983 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:26,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 10:34:26,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 10:34:26,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 10:34:26,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-09-30 10:34:26,984 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-09-30 10:34:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:27,152 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-09-30 10:34:27,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 10:34:27,153 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-09-30 10:34:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:27,155 INFO L225 Difference]: With dead ends: 309 [2018-09-30 10:34:27,155 INFO L226 Difference]: Without dead ends: 307 [2018-09-30 10:34:27,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2018-09-30 10:34:27,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-09-30 10:34:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-09-30 10:34:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-09-30 10:34:27,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-09-30 10:34:27,158 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-09-30 10:34:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:27,158 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-09-30 10:34:27,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 10:34:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-09-30 10:34:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-30 10:34:27,159 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:27,160 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:27,160 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:27,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:27,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-09-30 10:34:27,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:27,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:27,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:27,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:27,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:29,312 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:29,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:29,320 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:34:29,443 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-30 10:34:29,444 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:29,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:29,538 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:29,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 10:34:29,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 10:34:29,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 10:34:29,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-09-30 10:34:29,539 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-09-30 10:34:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:29,988 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-09-30 10:34:29,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 10:34:29,989 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-09-30 10:34:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:29,990 INFO L225 Difference]: With dead ends: 313 [2018-09-30 10:34:29,991 INFO L226 Difference]: Without dead ends: 311 [2018-09-30 10:34:29,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3003, Invalid=3003, Unknown=0, NotChecked=0, Total=6006 [2018-09-30 10:34:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-09-30 10:34:29,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-09-30 10:34:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-09-30 10:34:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-09-30 10:34:29,995 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-09-30 10:34:29,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:29,995 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-09-30 10:34:29,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 10:34:29,995 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-09-30 10:34:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-30 10:34:29,997 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:29,997 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:29,997 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:29,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:29,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-09-30 10:34:29,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:29,998 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:29,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:29,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:29,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:32,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:32,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:32,658 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:34:32,721 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:34:32,722 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:32,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:32,817 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:32,817 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 10:34:32,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 10:34:32,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 10:34:32,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-09-30 10:34:32,819 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-09-30 10:34:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:33,063 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-09-30 10:34:33,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 10:34:33,063 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-09-30 10:34:33,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:33,065 INFO L225 Difference]: With dead ends: 317 [2018-09-30 10:34:33,065 INFO L226 Difference]: Without dead ends: 315 [2018-09-30 10:34:33,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2018-09-30 10:34:33,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-09-30 10:34:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-09-30 10:34:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-09-30 10:34:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-09-30 10:34:33,069 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-09-30 10:34:33,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:33,069 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-09-30 10:34:33,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 10:34:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-09-30 10:34:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-30 10:34:33,070 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:33,070 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:33,070 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:33,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:33,071 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-09-30 10:34:33,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:33,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:33,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:33,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:33,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:35,313 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:35,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:35,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:35,322 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:34:35,438 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-30 10:34:35,438 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:35,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:35,535 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:35,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 10:34:35,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 10:34:35,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 10:34:35,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 10:34:35,537 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-09-30 10:34:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:35,728 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-09-30 10:34:35,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 10:34:35,728 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-09-30 10:34:35,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:35,729 INFO L225 Difference]: With dead ends: 321 [2018-09-30 10:34:35,729 INFO L226 Difference]: Without dead ends: 319 [2018-09-30 10:34:35,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3160, Invalid=3160, Unknown=0, NotChecked=0, Total=6320 [2018-09-30 10:34:35,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-09-30 10:34:35,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-09-30 10:34:35,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-30 10:34:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-09-30 10:34:35,732 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-09-30 10:34:35,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:35,732 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-09-30 10:34:35,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 10:34:35,733 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-09-30 10:34:35,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-30 10:34:35,734 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:35,734 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:35,734 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:35,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:35,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-09-30 10:34:35,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:35,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:35,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:35,735 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:35,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:38,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:38,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:38,150 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:34:38,262 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-30 10:34:38,262 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:38,266 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:38,365 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:38,365 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 10:34:38,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 10:34:38,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 10:34:38,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-09-30 10:34:38,367 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-09-30 10:34:38,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:38,556 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-09-30 10:34:38,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 10:34:38,556 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-09-30 10:34:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:38,557 INFO L225 Difference]: With dead ends: 325 [2018-09-30 10:34:38,557 INFO L226 Difference]: Without dead ends: 323 [2018-09-30 10:34:38,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2018-09-30 10:34:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-30 10:34:38,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-09-30 10:34:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-09-30 10:34:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-09-30 10:34:38,561 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-09-30 10:34:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:38,561 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-09-30 10:34:38,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 10:34:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-09-30 10:34:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-30 10:34:38,562 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:38,563 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:38,563 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:38,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:38,563 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-09-30 10:34:38,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:38,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:38,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:38,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:38,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:41,079 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:41,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:41,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:34:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:41,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:41,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:41,245 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 10:34:41,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 10:34:41,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 10:34:41,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-09-30 10:34:41,246 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-09-30 10:34:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:41,414 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-09-30 10:34:41,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 10:34:41,414 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-09-30 10:34:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:41,416 INFO L225 Difference]: With dead ends: 329 [2018-09-30 10:34:41,416 INFO L226 Difference]: Without dead ends: 327 [2018-09-30 10:34:41,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3321, Invalid=3321, Unknown=0, NotChecked=0, Total=6642 [2018-09-30 10:34:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-30 10:34:41,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-09-30 10:34:41,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-09-30 10:34:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-09-30 10:34:41,419 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-09-30 10:34:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:41,419 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-09-30 10:34:41,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 10:34:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-09-30 10:34:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-30 10:34:41,420 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:41,421 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:41,421 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:41,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:41,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-09-30 10:34:41,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:41,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:41,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:41,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:34:41,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:43,907 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:43,907 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:43,915 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:34:43,974 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:34:43,974 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:43,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:44,074 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:44,074 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 10:34:44,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 10:34:44,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 10:34:44,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-09-30 10:34:44,076 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-09-30 10:34:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:44,424 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-09-30 10:34:44,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 10:34:44,424 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-09-30 10:34:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:44,425 INFO L225 Difference]: With dead ends: 333 [2018-09-30 10:34:44,425 INFO L226 Difference]: Without dead ends: 331 [2018-09-30 10:34:44,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2018-09-30 10:34:44,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-09-30 10:34:44,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-09-30 10:34:44,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-09-30 10:34:44,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-09-30 10:34:44,428 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-09-30 10:34:44,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:44,428 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-09-30 10:34:44,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 10:34:44,429 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-09-30 10:34:44,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-30 10:34:44,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:44,430 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:44,430 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:44,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:44,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-09-30 10:34:44,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:44,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:44,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:47,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:47,269 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:47,277 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:34:47,405 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-09-30 10:34:47,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:47,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:47,510 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:47,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 10:34:47,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 10:34:47,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 10:34:47,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 10:34:47,512 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-09-30 10:34:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:47,776 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-09-30 10:34:47,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 10:34:47,776 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-09-30 10:34:47,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:47,778 INFO L225 Difference]: With dead ends: 337 [2018-09-30 10:34:47,778 INFO L226 Difference]: Without dead ends: 335 [2018-09-30 10:34:47,779 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3486, Invalid=3486, Unknown=0, NotChecked=0, Total=6972 [2018-09-30 10:34:47,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-09-30 10:34:47,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-09-30 10:34:47,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-09-30 10:34:47,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-09-30 10:34:47,782 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-09-30 10:34:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:47,782 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-09-30 10:34:47,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 10:34:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-09-30 10:34:47,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-09-30 10:34:47,783 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:47,784 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:47,784 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:47,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:47,784 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-09-30 10:34:47,784 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:47,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:47,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:47,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:47,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:50,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:50,301 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:50,309 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:34:50,375 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:34:50,376 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:50,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:50,513 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:50,514 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 10:34:50,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 10:34:50,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 10:34:50,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-09-30 10:34:50,515 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-09-30 10:34:50,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:50,878 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-09-30 10:34:50,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 10:34:50,878 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-09-30 10:34:50,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:50,880 INFO L225 Difference]: With dead ends: 341 [2018-09-30 10:34:50,881 INFO L226 Difference]: Without dead ends: 339 [2018-09-30 10:34:50,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2018-09-30 10:34:50,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-09-30 10:34:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-09-30 10:34:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-30 10:34:50,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-09-30 10:34:50,884 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-09-30 10:34:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:50,885 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-09-30 10:34:50,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 10:34:50,885 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-09-30 10:34:50,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-30 10:34:50,886 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:50,886 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:50,886 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:50,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:50,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-09-30 10:34:50,887 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:50,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:50,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:50,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:50,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:53,873 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:53,873 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:53,880 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:34:54,022 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-09-30 10:34:54,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:54,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:54,130 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:54,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 10:34:54,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 10:34:54,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 10:34:54,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-09-30 10:34:54,132 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-09-30 10:34:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:54,418 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-09-30 10:34:54,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 10:34:54,423 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-09-30 10:34:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:54,424 INFO L225 Difference]: With dead ends: 345 [2018-09-30 10:34:54,424 INFO L226 Difference]: Without dead ends: 343 [2018-09-30 10:34:54,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3655, Invalid=3655, Unknown=0, NotChecked=0, Total=7310 [2018-09-30 10:34:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-30 10:34:54,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-09-30 10:34:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-09-30 10:34:54,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-09-30 10:34:54,428 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-09-30 10:34:54,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:54,429 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-09-30 10:34:54,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 10:34:54,429 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-09-30 10:34:54,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-30 10:34:54,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:54,430 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:54,430 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:54,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:54,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-09-30 10:34:54,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:54,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:54,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:54,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:54,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:34:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:57,395 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:34:57,395 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:34:57,403 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:34:57,535 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-09-30 10:34:57,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:34:57,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:34:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:34:57,645 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:34:57,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 10:34:57,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 10:34:57,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 10:34:57,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-09-30 10:34:57,647 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-09-30 10:34:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:34:57,995 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-09-30 10:34:57,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 10:34:57,996 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-09-30 10:34:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:34:57,997 INFO L225 Difference]: With dead ends: 349 [2018-09-30 10:34:57,997 INFO L226 Difference]: Without dead ends: 347 [2018-09-30 10:34:57,998 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2018-09-30 10:34:57,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-09-30 10:34:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-09-30 10:34:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-09-30 10:34:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-09-30 10:34:58,004 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-09-30 10:34:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:34:58,004 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-09-30 10:34:58,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 10:34:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-09-30 10:34:58,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-30 10:34:58,007 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:34:58,007 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-09-30 10:34:58,008 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:34:58,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:34:58,008 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-09-30 10:34:58,008 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:34:58,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:34:58,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:58,009 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:34:58,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:34:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:00,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:00,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:00,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:35:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:00,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:01,011 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:01,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 10:35:01,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 10:35:01,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 10:35:01,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 10:35:01,013 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-09-30 10:35:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:01,356 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-09-30 10:35:01,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 10:35:01,356 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-09-30 10:35:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:01,358 INFO L225 Difference]: With dead ends: 353 [2018-09-30 10:35:01,358 INFO L226 Difference]: Without dead ends: 351 [2018-09-30 10:35:01,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3828, Invalid=3828, Unknown=0, NotChecked=0, Total=7656 [2018-09-30 10:35:01,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-30 10:35:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-09-30 10:35:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-30 10:35:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-09-30 10:35:01,361 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-09-30 10:35:01,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:01,361 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-09-30 10:35:01,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 10:35:01,361 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-09-30 10:35:01,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-30 10:35:01,362 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:01,362 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:01,363 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:01,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:01,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-09-30 10:35:01,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:01,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:01,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:01,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:35:01,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:04,382 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:04,382 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:04,390 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:35:04,458 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:35:04,458 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:04,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:04,575 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:04,575 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 10:35:04,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 10:35:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 10:35:04,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-09-30 10:35:04,577 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-09-30 10:35:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:04,978 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-09-30 10:35:04,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 10:35:04,979 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-09-30 10:35:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:04,981 INFO L225 Difference]: With dead ends: 357 [2018-09-30 10:35:04,981 INFO L226 Difference]: Without dead ends: 355 [2018-09-30 10:35:04,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2018-09-30 10:35:04,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-09-30 10:35:04,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-09-30 10:35:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-09-30 10:35:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-09-30 10:35:04,985 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-09-30 10:35:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:04,985 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-09-30 10:35:04,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 10:35:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-09-30 10:35:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-30 10:35:04,986 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:04,986 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:04,987 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:04,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:04,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-09-30 10:35:04,987 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:04,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:04,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:04,988 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:04,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:08,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:08,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:08,060 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:35:08,218 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-09-30 10:35:08,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:08,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:08,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:08,334 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 10:35:08,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 10:35:08,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 10:35:08,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-09-30 10:35:08,335 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-09-30 10:35:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:08,537 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-09-30 10:35:08,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 10:35:08,538 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-09-30 10:35:08,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:08,540 INFO L225 Difference]: With dead ends: 361 [2018-09-30 10:35:08,540 INFO L226 Difference]: Without dead ends: 359 [2018-09-30 10:35:08,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4005, Invalid=4005, Unknown=0, NotChecked=0, Total=8010 [2018-09-30 10:35:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-09-30 10:35:08,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-09-30 10:35:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-30 10:35:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-09-30 10:35:08,544 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-09-30 10:35:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:08,545 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-09-30 10:35:08,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 10:35:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-09-30 10:35:08,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-30 10:35:08,546 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:08,546 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:08,546 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:08,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:08,547 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-09-30 10:35:08,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:08,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:08,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:08,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:08,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:11,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:11,450 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:11,457 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:35:11,533 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:35:11,534 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:11,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:11,686 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:11,686 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 10:35:11,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 10:35:11,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 10:35:11,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-09-30 10:35:11,688 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-09-30 10:35:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:12,105 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-09-30 10:35:12,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 10:35:12,106 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-09-30 10:35:12,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:12,108 INFO L225 Difference]: With dead ends: 365 [2018-09-30 10:35:12,108 INFO L226 Difference]: Without dead ends: 363 [2018-09-30 10:35:12,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4095, Invalid=4095, Unknown=0, NotChecked=0, Total=8190 [2018-09-30 10:35:12,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-30 10:35:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-09-30 10:35:12,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-09-30 10:35:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-09-30 10:35:12,111 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-09-30 10:35:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:12,112 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-09-30 10:35:12,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 10:35:12,112 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-09-30 10:35:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-30 10:35:12,113 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:12,113 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:12,113 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:12,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-09-30 10:35:12,114 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:12,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:12,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:12,114 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:12,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:15,031 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:15,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:15,037 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:35:15,189 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-09-30 10:35:15,190 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:15,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:15,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:15,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 10:35:15,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 10:35:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 10:35:15,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 10:35:15,310 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-09-30 10:35:15,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:15,792 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-09-30 10:35:15,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 10:35:15,793 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-09-30 10:35:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:15,795 INFO L225 Difference]: With dead ends: 369 [2018-09-30 10:35:15,795 INFO L226 Difference]: Without dead ends: 367 [2018-09-30 10:35:15,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4186, Invalid=4186, Unknown=0, NotChecked=0, Total=8372 [2018-09-30 10:35:15,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-09-30 10:35:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-09-30 10:35:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-09-30 10:35:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-09-30 10:35:15,799 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-09-30 10:35:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:15,799 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-09-30 10:35:15,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 10:35:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-09-30 10:35:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-09-30 10:35:15,801 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:15,801 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:15,801 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:15,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-09-30 10:35:15,801 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:15,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:15,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:15,802 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:15,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:19,085 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:19,085 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:19,094 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:35:19,276 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-09-30 10:35:19,276 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:19,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:19,397 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:19,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 10:35:19,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 10:35:19,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 10:35:19,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-09-30 10:35:19,399 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-09-30 10:35:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:19,807 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-09-30 10:35:19,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 10:35:19,807 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-09-30 10:35:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:19,810 INFO L225 Difference]: With dead ends: 373 [2018-09-30 10:35:19,810 INFO L226 Difference]: Without dead ends: 371 [2018-09-30 10:35:19,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4278, Invalid=4278, Unknown=0, NotChecked=0, Total=8556 [2018-09-30 10:35:19,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-09-30 10:35:19,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-09-30 10:35:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-09-30 10:35:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-09-30 10:35:19,814 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-09-30 10:35:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:19,814 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-09-30 10:35:19,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 10:35:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-09-30 10:35:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-30 10:35:19,815 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:19,815 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:19,816 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:19,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-09-30 10:35:19,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:19,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:19,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:19,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:19,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:23,275 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:23,276 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:23,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:35:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:23,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:23,485 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:23,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 10:35:23,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 10:35:23,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 10:35:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-09-30 10:35:23,487 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-09-30 10:35:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:23,960 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-09-30 10:35:23,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 10:35:23,960 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-09-30 10:35:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:23,963 INFO L225 Difference]: With dead ends: 377 [2018-09-30 10:35:23,963 INFO L226 Difference]: Without dead ends: 375 [2018-09-30 10:35:23,963 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4371, Invalid=4371, Unknown=0, NotChecked=0, Total=8742 [2018-09-30 10:35:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-09-30 10:35:23,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-09-30 10:35:23,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-09-30 10:35:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-09-30 10:35:23,967 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-09-30 10:35:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:23,967 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-09-30 10:35:23,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 10:35:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-09-30 10:35:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-30 10:35:23,968 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:23,968 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:23,969 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:23,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:23,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-09-30 10:35:23,969 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:23,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:23,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:23,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:35:23,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:28,040 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:28,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:28,047 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:35:28,119 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:35:28,119 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:28,123 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:28,257 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:28,257 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 10:35:28,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 10:35:28,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 10:35:28,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-09-30 10:35:28,259 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-09-30 10:35:28,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:28,722 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-09-30 10:35:28,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 10:35:28,722 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-09-30 10:35:28,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:28,724 INFO L225 Difference]: With dead ends: 381 [2018-09-30 10:35:28,725 INFO L226 Difference]: Without dead ends: 379 [2018-09-30 10:35:28,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4465, Invalid=4465, Unknown=0, NotChecked=0, Total=8930 [2018-09-30 10:35:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-09-30 10:35:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-09-30 10:35:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-30 10:35:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-09-30 10:35:28,729 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-09-30 10:35:28,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:28,729 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-09-30 10:35:28,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 10:35:28,729 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-09-30 10:35:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-30 10:35:28,731 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:28,731 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:28,731 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:28,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:28,731 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-09-30 10:35:28,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:28,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:28,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:28,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:28,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:31,934 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:31,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:31,942 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:35:32,122 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-09-30 10:35:32,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:32,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:32,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:32,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 10:35:32,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 10:35:32,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 10:35:32,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 10:35:32,263 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-09-30 10:35:32,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:32,519 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-09-30 10:35:32,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 10:35:32,520 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-09-30 10:35:32,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:32,522 INFO L225 Difference]: With dead ends: 385 [2018-09-30 10:35:32,522 INFO L226 Difference]: Without dead ends: 383 [2018-09-30 10:35:32,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2018-09-30 10:35:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-30 10:35:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-09-30 10:35:32,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-09-30 10:35:32,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-09-30 10:35:32,526 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-09-30 10:35:32,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:32,526 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-09-30 10:35:32,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 10:35:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-09-30 10:35:32,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-09-30 10:35:32,528 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:32,528 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:32,528 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:32,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:32,528 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-09-30 10:35:32,528 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:32,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:32,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:32,529 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:32,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:35,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:35,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:35,816 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:35:35,894 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:35:35,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:35,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:36,041 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:36,041 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 10:35:36,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 10:35:36,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 10:35:36,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-09-30 10:35:36,043 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-09-30 10:35:36,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:36,520 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-09-30 10:35:36,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 10:35:36,520 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-09-30 10:35:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:36,523 INFO L225 Difference]: With dead ends: 389 [2018-09-30 10:35:36,523 INFO L226 Difference]: Without dead ends: 387 [2018-09-30 10:35:36,523 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2018-09-30 10:35:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-09-30 10:35:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-09-30 10:35:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-09-30 10:35:36,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-09-30 10:35:36,527 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-09-30 10:35:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:36,527 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-09-30 10:35:36,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 10:35:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-09-30 10:35:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-09-30 10:35:36,529 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:36,529 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:36,529 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:36,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-09-30 10:35:36,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:36,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:36,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:36,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:36,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:40,245 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:40,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:40,257 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:35:40,416 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-09-30 10:35:40,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:40,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:40,548 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:40,548 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 10:35:40,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 10:35:40,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 10:35:40,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-09-30 10:35:40,550 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-09-30 10:35:41,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:41,075 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-09-30 10:35:41,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 10:35:41,076 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-09-30 10:35:41,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:41,078 INFO L225 Difference]: With dead ends: 393 [2018-09-30 10:35:41,078 INFO L226 Difference]: Without dead ends: 391 [2018-09-30 10:35:41,079 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4753, Invalid=4753, Unknown=0, NotChecked=0, Total=9506 [2018-09-30 10:35:41,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-09-30 10:35:41,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-09-30 10:35:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-09-30 10:35:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-09-30 10:35:41,082 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-09-30 10:35:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:41,082 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-09-30 10:35:41,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 10:35:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-09-30 10:35:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-30 10:35:41,083 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:41,084 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:41,084 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:41,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:41,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-09-30 10:35:41,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:41,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:41,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:41,085 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:41,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:44,808 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:44,809 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:44,817 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:35:44,990 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-09-30 10:35:44,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:44,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:45,122 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:45,123 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 10:35:45,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 10:35:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 10:35:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-09-30 10:35:45,124 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-09-30 10:35:45,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:45,639 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-09-30 10:35:45,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 10:35:45,639 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-09-30 10:35:45,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:45,641 INFO L225 Difference]: With dead ends: 397 [2018-09-30 10:35:45,641 INFO L226 Difference]: Without dead ends: 395 [2018-09-30 10:35:45,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2018-09-30 10:35:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-09-30 10:35:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-09-30 10:35:45,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-09-30 10:35:45,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-09-30 10:35:45,644 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-09-30 10:35:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:45,644 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-09-30 10:35:45,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 10:35:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-09-30 10:35:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-09-30 10:35:45,646 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:45,646 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:45,646 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:45,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-09-30 10:35:45,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:45,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:45,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:45,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:45,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:49,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:49,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:49,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:35:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:49,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:49,654 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:49,654 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 10:35:49,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 10:35:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 10:35:49,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 10:35:49,656 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-09-30 10:35:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:50,215 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-09-30 10:35:50,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 10:35:50,215 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-09-30 10:35:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:50,217 INFO L225 Difference]: With dead ends: 401 [2018-09-30 10:35:50,217 INFO L226 Difference]: Without dead ends: 399 [2018-09-30 10:35:50,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4950, Invalid=4950, Unknown=0, NotChecked=0, Total=9900 [2018-09-30 10:35:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-09-30 10:35:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-09-30 10:35:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-09-30 10:35:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-09-30 10:35:50,222 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-09-30 10:35:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:50,222 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-09-30 10:35:50,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 10:35:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-09-30 10:35:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-09-30 10:35:50,224 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:50,224 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:50,224 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:50,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:50,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-09-30 10:35:50,224 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:50,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:50,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:50,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:35:50,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:53,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:53,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:53,972 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:35:54,048 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:35:54,048 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:54,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:54,178 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:54,198 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:54,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 10:35:54,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 10:35:54,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 10:35:54,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-09-30 10:35:54,200 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-09-30 10:35:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:54,719 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-09-30 10:35:54,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 10:35:54,720 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-09-30 10:35:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:54,722 INFO L225 Difference]: With dead ends: 405 [2018-09-30 10:35:54,722 INFO L226 Difference]: Without dead ends: 403 [2018-09-30 10:35:54,723 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2018-09-30 10:35:54,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-09-30 10:35:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-09-30 10:35:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-09-30 10:35:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-09-30 10:35:54,727 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-09-30 10:35:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:54,727 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-09-30 10:35:54,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 10:35:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-09-30 10:35:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-09-30 10:35:54,729 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:54,729 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:54,729 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:54,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:54,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-09-30 10:35:54,730 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:54,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:54,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:54,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:35:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:58,579 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:35:58,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:35:58,587 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:35:58,798 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-09-30 10:35:58,799 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:35:58,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:35:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:35:58,949 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:35:58,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 10:35:58,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 10:35:58,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 10:35:58,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-09-30 10:35:58,951 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-09-30 10:35:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:35:59,292 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-09-30 10:35:59,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 10:35:59,293 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-09-30 10:35:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:35:59,295 INFO L225 Difference]: With dead ends: 409 [2018-09-30 10:35:59,295 INFO L226 Difference]: Without dead ends: 407 [2018-09-30 10:35:59,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2018-09-30 10:35:59,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-09-30 10:35:59,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-09-30 10:35:59,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-09-30 10:35:59,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-09-30 10:35:59,301 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-09-30 10:35:59,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:35:59,301 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-09-30 10:35:59,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 10:35:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-09-30 10:35:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-30 10:35:59,303 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:35:59,304 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-09-30 10:35:59,304 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:35:59,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:35:59,304 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-09-30 10:35:59,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:35:59,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:35:59,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:59,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:35:59,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:35:59,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:03,281 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:03,282 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:03,288 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:36:03,370 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:36:03,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:03,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:03,523 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:03,523 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 10:36:03,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 10:36:03,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 10:36:03,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-09-30 10:36:03,525 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-09-30 10:36:04,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:04,100 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-09-30 10:36:04,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 10:36:04,101 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-09-30 10:36:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:04,103 INFO L225 Difference]: With dead ends: 413 [2018-09-30 10:36:04,104 INFO L226 Difference]: Without dead ends: 411 [2018-09-30 10:36:04,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2018-09-30 10:36:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-09-30 10:36:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-09-30 10:36:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-09-30 10:36:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-09-30 10:36:04,109 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-09-30 10:36:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:04,109 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-09-30 10:36:04,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 10:36:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-09-30 10:36:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-09-30 10:36:04,111 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:04,111 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:04,111 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:04,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:04,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-09-30 10:36:04,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:04,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:04,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:04,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:36:04,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:08,168 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:08,168 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:08,176 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:36:08,356 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-09-30 10:36:08,356 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:08,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:08,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:08,525 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 10:36:08,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 10:36:08,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 10:36:08,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 10:36:08,527 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-09-30 10:36:09,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:09,125 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-09-30 10:36:09,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 10:36:09,126 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-09-30 10:36:09,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:09,127 INFO L225 Difference]: With dead ends: 417 [2018-09-30 10:36:09,127 INFO L226 Difference]: Without dead ends: 415 [2018-09-30 10:36:09,128 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5356, Invalid=5356, Unknown=0, NotChecked=0, Total=10712 [2018-09-30 10:36:09,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-09-30 10:36:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-09-30 10:36:09,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-09-30 10:36:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-09-30 10:36:09,132 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-09-30 10:36:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:09,133 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-09-30 10:36:09,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 10:36:09,133 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-09-30 10:36:09,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-30 10:36:09,134 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:09,135 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:09,135 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:09,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:09,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-09-30 10:36:09,135 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:09,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:09,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:09,136 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:36:09,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:13,129 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:13,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:13,136 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:36:13,353 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-09-30 10:36:13,353 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:13,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:13,511 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:13,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 10:36:13,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 10:36:13,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 10:36:13,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-09-30 10:36:13,512 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-09-30 10:36:14,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:14,036 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-09-30 10:36:14,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 10:36:14,037 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-09-30 10:36:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:14,038 INFO L225 Difference]: With dead ends: 421 [2018-09-30 10:36:14,038 INFO L226 Difference]: Without dead ends: 419 [2018-09-30 10:36:14,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5460, Invalid=5460, Unknown=0, NotChecked=0, Total=10920 [2018-09-30 10:36:14,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-09-30 10:36:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-09-30 10:36:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-09-30 10:36:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-09-30 10:36:14,044 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-09-30 10:36:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:14,044 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-09-30 10:36:14,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 10:36:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-09-30 10:36:14,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-30 10:36:14,046 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:14,046 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:14,046 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:14,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:14,046 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-09-30 10:36:14,046 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:14,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:14,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:14,047 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:36:14,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:18,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:18,100 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:18,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:36:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:18,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:18,335 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:18,335 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 10:36:18,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 10:36:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 10:36:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-09-30 10:36:18,336 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-09-30 10:36:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:18,937 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-09-30 10:36:18,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 10:36:18,937 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-09-30 10:36:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:18,938 INFO L225 Difference]: With dead ends: 425 [2018-09-30 10:36:18,938 INFO L226 Difference]: Without dead ends: 423 [2018-09-30 10:36:18,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5565, Invalid=5565, Unknown=0, NotChecked=0, Total=11130 [2018-09-30 10:36:18,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-09-30 10:36:18,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-09-30 10:36:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-09-30 10:36:18,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-09-30 10:36:18,943 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-09-30 10:36:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:18,943 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-09-30 10:36:18,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 10:36:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-09-30 10:36:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-30 10:36:18,945 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:18,945 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:18,945 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:18,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-09-30 10:36:18,945 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:18,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:18,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:18,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:36:18,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:22,977 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:22,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:22,985 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:36:23,069 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:36:23,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:23,074 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:23,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:23,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:23,316 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 10:36:23,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 10:36:23,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 10:36:23,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-09-30 10:36:23,318 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-09-30 10:36:24,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:24,019 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-09-30 10:36:24,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 10:36:24,019 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-09-30 10:36:24,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:24,021 INFO L225 Difference]: With dead ends: 429 [2018-09-30 10:36:24,021 INFO L226 Difference]: Without dead ends: 427 [2018-09-30 10:36:24,022 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5671, Invalid=5671, Unknown=0, NotChecked=0, Total=11342 [2018-09-30 10:36:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-09-30 10:36:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-09-30 10:36:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-09-30 10:36:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-09-30 10:36:24,026 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-09-30 10:36:24,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:24,026 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-09-30 10:36:24,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 10:36:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-09-30 10:36:24,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-30 10:36:24,028 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:24,029 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:24,029 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:24,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:24,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-09-30 10:36:24,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:24,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:24,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:24,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:36:24,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:28,125 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:28,125 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:28,133 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:36:28,339 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-09-30 10:36:28,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:28,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:28,492 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:28,492 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 10:36:28,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 10:36:28,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 10:36:28,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 10:36:28,494 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-09-30 10:36:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:28,951 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-09-30 10:36:28,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 10:36:28,952 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-09-30 10:36:28,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:28,953 INFO L225 Difference]: With dead ends: 433 [2018-09-30 10:36:28,953 INFO L226 Difference]: Without dead ends: 431 [2018-09-30 10:36:28,953 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5778, Invalid=5778, Unknown=0, NotChecked=0, Total=11556 [2018-09-30 10:36:28,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-09-30 10:36:28,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-09-30 10:36:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-09-30 10:36:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-09-30 10:36:28,956 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-09-30 10:36:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:28,956 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-09-30 10:36:28,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 10:36:28,956 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-09-30 10:36:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-09-30 10:36:28,958 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:28,958 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:28,958 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:28,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:28,958 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-09-30 10:36:28,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:28,959 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:28,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:28,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:36:28,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:33,196 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:33,196 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:33,204 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:36:33,292 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:36:33,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:33,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:33,452 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:33,453 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 10:36:33,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 10:36:33,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 10:36:33,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-09-30 10:36:33,454 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-09-30 10:36:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:34,152 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-09-30 10:36:34,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 10:36:34,153 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-09-30 10:36:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:34,154 INFO L225 Difference]: With dead ends: 437 [2018-09-30 10:36:34,154 INFO L226 Difference]: Without dead ends: 435 [2018-09-30 10:36:34,155 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5886, Invalid=5886, Unknown=0, NotChecked=0, Total=11772 [2018-09-30 10:36:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-09-30 10:36:34,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-09-30 10:36:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-09-30 10:36:34,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-09-30 10:36:34,158 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-09-30 10:36:34,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:34,158 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-09-30 10:36:34,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 10:36:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-09-30 10:36:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-30 10:36:34,160 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:34,160 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:34,160 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:34,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:34,160 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-09-30 10:36:34,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:34,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:34,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:34,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:36:34,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:36:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:38,440 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:36:38,440 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:36:38,447 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:36:38,663 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-09-30 10:36:38,663 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:36:38,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:36:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:36:38,821 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:36:38,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-30 10:36:38,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 10:36:38,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 10:36:38,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-09-30 10:36:38,822 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-09-30 10:36:39,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:36:39,402 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-09-30 10:36:39,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 10:36:39,402 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-09-30 10:36:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:36:39,403 INFO L225 Difference]: With dead ends: 441 [2018-09-30 10:36:39,403 INFO L226 Difference]: Without dead ends: 439 [2018-09-30 10:36:39,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5995, Invalid=5995, Unknown=0, NotChecked=0, Total=11990 [2018-09-30 10:36:39,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-09-30 10:36:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-09-30 10:36:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-09-30 10:36:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-09-30 10:36:39,408 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-09-30 10:36:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:36:39,408 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-09-30 10:36:39,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 10:36:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-09-30 10:36:39,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-30 10:36:39,409 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:36:39,409 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-09-30 10:36:39,410 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:36:39,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-30 10:36:39,410 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-09-30 10:36:39,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:36:39,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:36:39,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:39,411 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:36:39,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:36:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-30 10:36:40,361 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 10:36:40,366 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 10:36:40,366 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:36:40 BoogieIcfgContainer [2018-09-30 10:36:40,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:36:40,367 INFO L168 Benchmark]: Toolchain (without parser) took 234686.09 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 332.4 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -218.3 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. [2018-09-30 10:36:40,369 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:36:40,369 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:36:40,369 INFO L168 Benchmark]: Boogie Preprocessor took 26.82 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 10:36:40,369 INFO L168 Benchmark]: RCFGBuilder took 413.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 10:36:40,370 INFO L168 Benchmark]: TraceAbstraction took 234195.14 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 332.4 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -239.4 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. [2018-09-30 10:36:40,372 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 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.80 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.82 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 413.44 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234195.14 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 332.4 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -239.4 MB). Peak memory consumption was 93.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 41). Cancelled while BasicCegarLoop was analyzing trace of length 439 with TraceHistMax 108, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PredicateComparison was comparing new predicate (quantifier-free) to 49 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 234.1s OverallTime, 110 OverallIterations, 108 TraceHistogramMax, 27.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 981 SDtfs, 582 SDslu, 21211 SDs, 0 SdLazy, 9551 SolverSat, 193 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29643 GetRequests, 23756 SyntacticMatches, 0 SemanticMatches, 5887 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 176.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=439occurred in iteration=109, 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: 0.3s AutomataMinimizationTime, 109 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 8.7s SatisfiabilityAnalysisTime, 186.8s InterpolantComputationTime, 47520 NumberOfCodeBlocks, 47520 NumberOfCodeBlocksAsserted, 3150 NumberOfCheckSat, 47304 ConstructedInterpolants, 0 QuantifiedInterpolants, 41060932 SizeOfPredicates, 107 NumberOfNonLiveVariables, 35952 ConjunctsInSsa, 5992 ConjunctsInUnsatCore, 216 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1644804 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/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-36-40-380.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-36-40-380.csv Completed graceful shutdown