java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c372c2b [2018-10-02 12:20:50,991 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-02 12:20:50,993 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-02 12:20:51,009 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-02 12:20:51,009 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-02 12:20:51,011 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-02 12:20:51,012 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-02 12:20:51,015 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-02 12:20:51,018 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-02 12:20:51,019 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-02 12:20:51,021 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-02 12:20:51,059 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-02 12:20:51,074 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-02 12:20:51,075 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-02 12:20:51,075 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-02 12:20:51,076 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-02 12:20:51,076 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-02 12:20:51,076 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-02 12:20:51,077 INFO L133 SettingsManager]: * Use SBE=true [2018-10-02 12:20:51,077 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-02 12:20:51,077 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-02 12:20:51,077 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-02 12:20:51,077 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-02 12:20:51,078 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-02 12:20:51,078 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-02 12:20:51,078 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-02 12:20:51,078 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-02 12:20:51,078 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-02 12:20:51,079 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-02 12:20:51,079 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-02 12:20:51,079 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-02 12:20:51,079 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-02 12:20:51,079 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-02 12:20:51,080 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-02 12:20:51,080 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-02 12:20:51,080 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-02 12:20:51,080 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-02 12:20:51,080 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-02 12:20:51,081 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-02 12:20:51,081 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-02 12:20:51,081 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-02 12:20:51,081 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-02 12:20:51,081 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-02 12:20:51,130 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-02 12:20:51,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-02 12:20:51,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-02 12:20:51,148 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-02 12:20:51,149 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-02 12:20:51,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl [2018-10-02 12:20:51,150 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LuxembourgOctopus.bpl' [2018-10-02 12:20:51,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-02 12:20:51,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-02 12:20:51,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-02 12:20:51,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-02 12:20:51,192 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-02 12:20:51,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,230 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-02 12:20:51,231 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-02 12:20:51,231 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-02 12:20:51,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-02 12:20:51,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-02 12:20:51,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-02 12:20:51,234 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-02 12:20:51,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/1) ... [2018-10-02 12:20:51,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-02 12:20:51,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-02 12:20:51,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-02 12:20:51,255 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-02 12:20:51,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (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 [2018-10-02 12:20:51,311 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-02 12:20:51,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-02 12:20:51,312 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-02 12:20:51,536 INFO L337 CfgBuilder]: Using library mode [2018-10-02 12:20:51,537 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:20:51 BoogieIcfgContainer [2018-10-02 12:20:51,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-02 12:20:51,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-02 12:20:51,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-02 12:20:51,541 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-02 12:20:51,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.10 12:20:51" (1/2) ... [2018-10-02 12:20:51,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3763e9 and model type LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 12:20:51, skipping insertion in model container [2018-10-02 12:20:51,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 12:20:51" (2/2) ... [2018-10-02 12:20:51,545 INFO L112 eAbstractionObserver]: Analyzing ICFG LuxembourgOctopus.bpl [2018-10-02 12:20:51,555 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-02 12:20:51,563 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-02 12:20:51,616 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-02 12:20:51,617 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-02 12:20:51,617 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-02 12:20:51,617 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-02 12:20:51,617 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-02 12:20:51,618 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-02 12:20:51,618 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-02 12:20:51,618 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-02 12:20:51,618 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-02 12:20:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-02 12:20:51,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-02 12:20:51,640 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:51,642 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-02 12:20:51,643 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:51,649 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:51,650 INFO L82 PathProgramCache]: Analyzing trace with hash 30048, now seen corresponding path program 1 times [2018-10-02 12:20:51,652 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:51,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:51,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:51,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:51,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:51,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-02 12:20:51,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-02 12:20:51,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-02 12:20:51,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-02 12:20:51,826 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:51,829 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-02 12:20:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:52,031 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-10-02 12:20:52,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-02 12:20:52,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-02 12:20:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:52,047 INFO L225 Difference]: With dead ends: 13 [2018-10-02 12:20:52,047 INFO L226 Difference]: Without dead ends: 5 [2018-10-02 12:20:52,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime [2018-10-02 12:20:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-02 12:20:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-02 12:20:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-02 12:20:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-02 12:20:52,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-02 12:20:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:52,086 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-02 12:20:52,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-02 12:20:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-02 12:20:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-02 12:20:52,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:52,087 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-02 12:20:52,088 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:52,088 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:52,088 INFO L82 PathProgramCache]: Analyzing trace with hash 927622, now seen corresponding path program 1 times [2018-10-02 12:20:52,088 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:52,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:52,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:52,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:52,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:52,179 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 [2018-10-02 12:20:52,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:52,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:52,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:52,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-10-02 12:20:52,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-02 12:20:52,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-02 12:20:52,305 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:52,305 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-10-02 12:20:52,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:52,376 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-02 12:20:52,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-02 12:20:52,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-10-02 12:20:52,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:52,377 INFO L225 Difference]: With dead ends: 8 [2018-10-02 12:20:52,377 INFO L226 Difference]: Without dead ends: 6 [2018-10-02 12:20:52,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:52,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-02 12:20:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-02 12:20:52,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-02 12:20:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-02 12:20:52,380 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-02 12:20:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:52,381 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-02 12:20:52,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-02 12:20:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-02 12:20:52,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-02 12:20:52,381 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:52,382 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-02 12:20:52,382 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:52,382 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:52,382 INFO L82 PathProgramCache]: Analyzing trace with hash 28752416, now seen corresponding path program 2 times [2018-10-02 12:20:52,383 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:52,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:52,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:52,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:52,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:52,447 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 [2018-10-02 12:20:52,459 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:52,471 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:52,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:52,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:52,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:52,589 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:52,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-02 12:20:52,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-02 12:20:52,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-02 12:20:52,590 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:52,590 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states. [2018-10-02 12:20:52,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:52,690 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-02 12:20:52,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-02 12:20:52,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-10-02 12:20:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:52,692 INFO L225 Difference]: With dead ends: 9 [2018-10-02 12:20:52,692 INFO L226 Difference]: Without dead ends: 7 [2018-10-02 12:20:52,693 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:52,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-02 12:20:52,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-02 12:20:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-02 12:20:52,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-02 12:20:52,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-02 12:20:52,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:52,696 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-02 12:20:52,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-02 12:20:52,697 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-02 12:20:52,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-02 12:20:52,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:52,697 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-02 12:20:52,698 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:52,698 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:52,698 INFO L82 PathProgramCache]: Analyzing trace with hash 891321030, now seen corresponding path program 3 times [2018-10-02 12:20:52,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:52,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:52,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,700 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:52,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:52,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:52,799 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 [2018-10-02 12:20:52,807 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:52,816 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-02 12:20:52,817 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:52,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:52,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:53,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:53,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-10-02 12:20:53,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-02 12:20:53,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-02 12:20:53,027 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:53,028 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 7 states. [2018-10-02 12:20:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:53,206 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-02 12:20:53,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-02 12:20:53,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2018-10-02 12:20:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:53,208 INFO L225 Difference]: With dead ends: 10 [2018-10-02 12:20:53,208 INFO L226 Difference]: Without dead ends: 8 [2018-10-02 12:20:53,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:20:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-02 12:20:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-02 12:20:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-02 12:20:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-02 12:20:53,215 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-02 12:20:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:53,216 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-02 12:20:53,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-02 12:20:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-02 12:20:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-02 12:20:53,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:53,217 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-02 12:20:53,219 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:53,219 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:53,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1861144288, now seen corresponding path program 4 times [2018-10-02 12:20:53,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:53,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:53,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:53,221 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:53,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:53,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:53,361 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) [2018-10-02 12:20:53,376 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-02 12:20:53,388 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:53,389 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:53,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:53,440 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:53,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:53,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-10-02 12:20:53,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-02 12:20:53,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-02 12:20:53,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:53,463 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2018-10-02 12:20:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:53,548 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-02 12:20:53,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-02 12:20:53,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-10-02 12:20:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:53,550 INFO L225 Difference]: With dead ends: 11 [2018-10-02 12:20:53,550 INFO L226 Difference]: Without dead ends: 9 [2018-10-02 12:20:53,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-02 12:20:53,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-02 12:20:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-02 12:20:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-02 12:20:53,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-02 12:20:53,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:53,554 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-02 12:20:53,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-02 12:20:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-02 12:20:53,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-02 12:20:53,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:53,555 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-02 12:20:53,556 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:53,556 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:53,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1860894214, now seen corresponding path program 5 times [2018-10-02 12:20:53,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:53,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:53,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:53,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:53,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:53,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:53,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:53,838 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 [2018-10-02 12:20:53,858 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:53,917 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-02 12:20:53,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:53,920 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:54,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-10-02 12:20:54,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-02 12:20:54,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-02 12:20:54,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:54,164 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2018-10-02 12:20:54,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:54,228 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-02 12:20:54,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-02 12:20:54,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2018-10-02 12:20:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:54,229 INFO L225 Difference]: With dead ends: 12 [2018-10-02 12:20:54,229 INFO L226 Difference]: Without dead ends: 10 [2018-10-02 12:20:54,230 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:20:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-02 12:20:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-02 12:20:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-02 12:20:54,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-02 12:20:54,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-02 12:20:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:54,234 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-02 12:20:54,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-02 12:20:54,235 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-02 12:20:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-02 12:20:54,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:54,235 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-02 12:20:54,236 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:54,236 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:54,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1853141920, now seen corresponding path program 6 times [2018-10-02 12:20:54,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:54,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:54,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:54,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:54,409 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 [2018-10-02 12:20:54,417 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:54,427 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-02 12:20:54,427 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:54,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,523 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:54,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-10-02 12:20:54,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-02 12:20:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-02 12:20:54,524 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:54,524 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2018-10-02 12:20:54,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:54,645 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-02 12:20:54,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-02 12:20:54,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2018-10-02 12:20:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:54,647 INFO L225 Difference]: With dead ends: 13 [2018-10-02 12:20:54,647 INFO L226 Difference]: Without dead ends: 11 [2018-10-02 12:20:54,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:20:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-02 12:20:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-02 12:20:54,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-02 12:20:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-02 12:20:54,652 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-02 12:20:54,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:54,653 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-02 12:20:54,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-02 12:20:54,653 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-02 12:20:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-02 12:20:54,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:54,654 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-02 12:20:54,654 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:54,654 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:54,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1612820806, now seen corresponding path program 7 times [2018-10-02 12:20:54,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:54,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:54,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:54,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:54,754 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:54,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:54,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:54,850 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:54,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-10-02 12:20:54,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-02 12:20:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-02 12:20:54,851 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:54,852 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 11 states. [2018-10-02 12:20:54,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:54,969 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-02 12:20:54,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-02 12:20:54,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2018-10-02 12:20:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:54,973 INFO L225 Difference]: With dead ends: 14 [2018-10-02 12:20:54,973 INFO L226 Difference]: Without dead ends: 12 [2018-10-02 12:20:54,973 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:54,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-02 12:20:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-02 12:20:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-02 12:20:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-02 12:20:54,977 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-02 12:20:54,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:54,978 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-02 12:20:54,978 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-02 12:20:54,978 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-02 12:20:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-02 12:20:54,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:54,978 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-02 12:20:54,979 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:54,979 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:54,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1542166432, now seen corresponding path program 8 times [2018-10-02 12:20:54,979 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:54,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:54,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:54,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:55,161 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 [2018-10-02 12:20:55,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:55,175 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:55,175 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:55,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,282 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:55,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-10-02 12:20:55,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-02 12:20:55,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-02 12:20:55,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:55,284 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states. [2018-10-02 12:20:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:55,370 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-02 12:20:55,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-02 12:20:55,371 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11 [2018-10-02 12:20:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:55,372 INFO L225 Difference]: With dead ends: 15 [2018-10-02 12:20:55,372 INFO L226 Difference]: Without dead ends: 13 [2018-10-02 12:20:55,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:20:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-02 12:20:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-02 12:20:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-02 12:20:55,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-02 12:20:55,376 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-02 12:20:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:55,376 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-02 12:20:55,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-02 12:20:55,377 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-02 12:20:55,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-02 12:20:55,377 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:55,377 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-02 12:20:55,378 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:55,378 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash -562523002, now seen corresponding path program 9 times [2018-10-02 12:20:55,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:55,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:55,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:55,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:55,487 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:55,488 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 [2018-10-02 12:20:55,503 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:55,529 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-02 12:20:55,530 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:55,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:55,625 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:55,659 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:55,659 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-10-02 12:20:55,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-02 12:20:55,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-02 12:20:55,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:55,660 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-10-02 12:20:55,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:55,850 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-02 12:20:55,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-02 12:20:55,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-10-02 12:20:55,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:55,857 INFO L225 Difference]: With dead ends: 16 [2018-10-02 12:20:55,857 INFO L226 Difference]: Without dead ends: 14 [2018-10-02 12:20:55,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime [2018-10-02 12:20:55,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-02 12:20:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-02 12:20:55,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-02 12:20:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-02 12:20:55,861 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-02 12:20:55,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:55,861 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-02 12:20:55,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-02 12:20:55,862 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-02 12:20:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-02 12:20:55,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:55,862 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-02 12:20:55,863 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:55,863 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:55,863 INFO L82 PathProgramCache]: Analyzing trace with hash -258347744, now seen corresponding path program 10 times [2018-10-02 12:20:55,863 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:55,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:55,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,864 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:55,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:56,028 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:20:56,037 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:56,065 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:56,066 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:56,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,303 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:56,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-10-02 12:20:56,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-02 12:20:56,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-02 12:20:56,304 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:56,304 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2018-10-02 12:20:56,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:56,483 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-02 12:20:56,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-02 12:20:56,484 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2018-10-02 12:20:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:56,485 INFO L225 Difference]: With dead ends: 17 [2018-10-02 12:20:56,485 INFO L226 Difference]: Without dead ends: 15 [2018-10-02 12:20:56,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime [2018-10-02 12:20:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-02 12:20:56,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-02 12:20:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-02 12:20:56,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-02 12:20:56,489 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-02 12:20:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:56,489 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-02 12:20:56,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-02 12:20:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-02 12:20:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-02 12:20:56,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:56,490 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-02 12:20:56,490 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:56,490 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:56,490 INFO L82 PathProgramCache]: Analyzing trace with hash 581150662, now seen corresponding path program 11 times [2018-10-02 12:20:56,491 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:56,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:56,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,492 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:56,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:56,688 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 [2018-10-02 12:20:56,697 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:20:56,711 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-02 12:20:56,711 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:56,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:56,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:56,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-10-02 12:20:56,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-02 12:20:56,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-02 12:20:56,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:56,787 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2018-10-02 12:20:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:56,912 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-02 12:20:56,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-02 12:20:56,913 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2018-10-02 12:20:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:56,914 INFO L225 Difference]: With dead ends: 18 [2018-10-02 12:20:56,914 INFO L226 Difference]: Without dead ends: 16 [2018-10-02 12:20:56,914 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:20:56,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-02 12:20:56,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-02 12:20:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-02 12:20:56,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-02 12:20:56,917 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-02 12:20:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:56,918 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-02 12:20:56,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-02 12:20:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-02 12:20:56,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-02 12:20:56,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:56,919 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-02 12:20:56,919 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:56,919 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:56,919 INFO L82 PathProgramCache]: Analyzing trace with hash 835797472, now seen corresponding path program 12 times [2018-10-02 12:20:56,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:56,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:56,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:56,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:57,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:57,134 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 [2018-10-02 12:20:57,143 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:20:57,156 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-02 12:20:57,157 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:57,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:57,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:57,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-10-02 12:20:57,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-02 12:20:57,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-02 12:20:57,243 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:57,243 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states. [2018-10-02 12:20:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:57,352 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-02 12:20:57,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-02 12:20:57,352 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15 [2018-10-02 12:20:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:57,353 INFO L225 Difference]: With dead ends: 19 [2018-10-02 12:20:57,353 INFO L226 Difference]: Without dead ends: 17 [2018-10-02 12:20:57,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:20:57,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-02 12:20:57,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-02 12:20:57,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-02 12:20:57,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-02 12:20:57,358 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-02 12:20:57,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:57,358 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-02 12:20:57,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-02 12:20:57,359 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-02 12:20:57,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-02 12:20:57,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:57,359 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-02 12:20:57,360 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:57,360 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:57,360 INFO L82 PathProgramCache]: Analyzing trace with hash 139913990, now seen corresponding path program 13 times [2018-10-02 12:20:57,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:57,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:57,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:57,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:57,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:57,567 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 [2018-10-02 12:20:57,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:57,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:57,708 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:57,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2018-10-02 12:20:57,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-02 12:20:57,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-02 12:20:57,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:57,709 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 17 states. [2018-10-02 12:20:57,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:57,955 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-02 12:20:57,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-02 12:20:57,958 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 16 [2018-10-02 12:20:57,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:57,958 INFO L225 Difference]: With dead ends: 20 [2018-10-02 12:20:57,959 INFO L226 Difference]: Without dead ends: 18 [2018-10-02 12:20:57,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:20:57,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-02 12:20:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-02 12:20:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-02 12:20:57,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-02 12:20:57,964 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-02 12:20:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:57,964 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-02 12:20:57,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-02 12:20:57,964 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-02 12:20:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-02 12:20:57,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:57,964 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-02 12:20:57,965 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:57,965 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:57,965 INFO L82 PathProgramCache]: Analyzing trace with hash 42362528, now seen corresponding path program 14 times [2018-10-02 12:20:57,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:57,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:57,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:20:57,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:58,204 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 [2018-10-02 12:20:58,213 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:20:58,224 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:20:58,224 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:58,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:58,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2018-10-02 12:20:58,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-02 12:20:58,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-02 12:20:58,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:58,346 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states. [2018-10-02 12:20:58,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:58,454 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-02 12:20:58,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-02 12:20:58,456 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2018-10-02 12:20:58,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:58,456 INFO L225 Difference]: With dead ends: 21 [2018-10-02 12:20:58,457 INFO L226 Difference]: Without dead ends: 19 [2018-10-02 12:20:58,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:20:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-02 12:20:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-02 12:20:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-02 12:20:58,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-02 12:20:58,461 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-02 12:20:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:58,461 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-02 12:20:58,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-02 12:20:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-02 12:20:58,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-02 12:20:58,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:58,462 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-02 12:20:58,462 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:58,462 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:58,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1313234502, now seen corresponding path program 15 times [2018-10-02 12:20:58,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:58,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:58,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:58,464 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:58,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:58,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:58,904 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 [2018-10-02 12:20:58,913 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:20:59,020 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-02 12:20:59,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:59,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:59,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:59,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2018-10-02 12:20:59,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-02 12:20:59,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-02 12:20:59,378 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:59,378 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 19 states. [2018-10-02 12:20:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:20:59,587 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-02 12:20:59,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-02 12:20:59,587 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2018-10-02 12:20:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:20:59,588 INFO L225 Difference]: With dead ends: 22 [2018-10-02 12:20:59,588 INFO L226 Difference]: Without dead ends: 20 [2018-10-02 12:20:59,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.3s impTime [2018-10-02 12:20:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-02 12:20:59,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-02 12:20:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-02 12:20:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-02 12:20:59,593 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-02 12:20:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:20:59,593 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-02 12:20:59,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-02 12:20:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-02 12:20:59,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-02 12:20:59,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:20:59,594 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-02 12:20:59,594 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:20:59,594 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:20:59,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2055560032, now seen corresponding path program 16 times [2018-10-02 12:20:59,594 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:20:59,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:20:59,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:59,595 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:20:59,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:20:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:20:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:59,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:20:59,774 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 [2018-10-02 12:20:59,788 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:20:59,801 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:20:59,801 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:20:59,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:20:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:20:59,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:20:59,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2018-10-02 12:20:59,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-02 12:20:59,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-02 12:20:59,986 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:20:59,986 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states. [2018-10-02 12:21:00,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:00,125 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-02 12:21:00,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-02 12:21:00,125 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19 [2018-10-02 12:21:00,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:00,126 INFO L225 Difference]: With dead ends: 23 [2018-10-02 12:21:00,126 INFO L226 Difference]: Without dead ends: 21 [2018-10-02 12:21:00,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime [2018-10-02 12:21:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-02 12:21:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-02 12:21:00,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-02 12:21:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-02 12:21:00,130 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19 [2018-10-02 12:21:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:00,131 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-02 12:21:00,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-02 12:21:00,131 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-02 12:21:00,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-02 12:21:00,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:00,131 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1] [2018-10-02 12:21:00,132 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:00,132 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:00,132 INFO L82 PathProgramCache]: Analyzing trace with hash -702152314, now seen corresponding path program 17 times [2018-10-02 12:21:00,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:00,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:00,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:00,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:00,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:00,490 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 [2018-10-02 12:21:00,498 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:00,512 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2018-10-02 12:21:00,512 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:00,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:00,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:00,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2018-10-02 12:21:00,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-02 12:21:00,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-02 12:21:00,663 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:00,664 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 21 states. [2018-10-02 12:21:00,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:00,756 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-10-02 12:21:00,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-02 12:21:00,757 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 20 [2018-10-02 12:21:00,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:00,757 INFO L225 Difference]: With dead ends: 24 [2018-10-02 12:21:00,758 INFO L226 Difference]: Without dead ends: 22 [2018-10-02 12:21:00,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:21:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-10-02 12:21:00,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-10-02 12:21:00,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-10-02 12:21:00,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-10-02 12:21:00,763 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2018-10-02 12:21:00,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:00,763 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-10-02 12:21:00,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-02 12:21:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-10-02 12:21:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-02 12:21:00,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:00,764 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1] [2018-10-02 12:21:00,764 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:00,765 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:00,765 INFO L82 PathProgramCache]: Analyzing trace with hash -291889120, now seen corresponding path program 18 times [2018-10-02 12:21:00,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:00,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:00,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:00,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:01,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:01,162 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 [2018-10-02 12:21:01,172 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:01,188 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2018-10-02 12:21:01,188 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:01,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:01,605 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:01,605 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2018-10-02 12:21:01,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-02 12:21:01,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-02 12:21:01,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:01,606 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states. [2018-10-02 12:21:01,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:01,810 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-02 12:21:01,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-02 12:21:01,811 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21 [2018-10-02 12:21:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:01,812 INFO L225 Difference]: With dead ends: 25 [2018-10-02 12:21:01,812 INFO L226 Difference]: Without dead ends: 23 [2018-10-02 12:21:01,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime [2018-10-02 12:21:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-02 12:21:01,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-02 12:21:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-02 12:21:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-02 12:21:01,818 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21 [2018-10-02 12:21:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:01,818 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-02 12:21:01,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-02 12:21:01,818 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-02 12:21:01,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-02 12:21:01,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:01,819 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1] [2018-10-02 12:21:01,819 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:01,819 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:01,820 INFO L82 PathProgramCache]: Analyzing trace with hash -458631994, now seen corresponding path program 19 times [2018-10-02 12:21:01,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:01,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:01,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:01,821 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:01,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,127 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:02,127 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 [2018-10-02 12:21:02,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:02,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:02,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2018-10-02 12:21:02,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-02 12:21:02,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-02 12:21:02,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:02,318 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 23 states. [2018-10-02 12:21:02,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:02,469 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-02 12:21:02,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-02 12:21:02,470 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 22 [2018-10-02 12:21:02,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:02,471 INFO L225 Difference]: With dead ends: 26 [2018-10-02 12:21:02,471 INFO L226 Difference]: Without dead ends: 24 [2018-10-02 12:21:02,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:21:02,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-02 12:21:02,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-02 12:21:02,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-02 12:21:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-02 12:21:02,475 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22 [2018-10-02 12:21:02,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:02,475 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-02 12:21:02,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-02 12:21:02,475 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-02 12:21:02,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-02 12:21:02,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:02,476 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1] [2018-10-02 12:21:02,476 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:02,476 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:02,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1332693792, now seen corresponding path program 20 times [2018-10-02 12:21:02,476 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:02,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:02,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:02,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:02,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:02,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:02,849 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 [2018-10-02 12:21:02,858 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:02,870 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:02,870 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:02,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:03,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:03,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2018-10-02 12:21:03,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-02 12:21:03,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-02 12:21:03,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:03,007 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states. [2018-10-02 12:21:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:03,148 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-10-02 12:21:03,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-02 12:21:03,149 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23 [2018-10-02 12:21:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:03,150 INFO L225 Difference]: With dead ends: 27 [2018-10-02 12:21:03,150 INFO L226 Difference]: Without dead ends: 25 [2018-10-02 12:21:03,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime [2018-10-02 12:21:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-02 12:21:03,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-02 12:21:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-02 12:21:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-10-02 12:21:03,154 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23 [2018-10-02 12:21:03,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:03,154 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-10-02 12:21:03,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-02 12:21:03,154 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-10-02 12:21:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-02 12:21:03,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:03,155 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1] [2018-10-02 12:21:03,155 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:03,155 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:03,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1636161542, now seen corresponding path program 21 times [2018-10-02 12:21:03,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:03,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:03,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:03,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:03,486 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:03,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:03,487 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 [2018-10-02 12:21:03,496 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:03,516 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-10-02 12:21:03,516 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:03,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:03,792 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:03,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2018-10-02 12:21:03,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-02 12:21:03,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-02 12:21:03,793 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:03,793 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 25 states. [2018-10-02 12:21:03,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:03,951 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-02 12:21:03,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-02 12:21:03,954 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 24 [2018-10-02 12:21:03,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:03,955 INFO L225 Difference]: With dead ends: 28 [2018-10-02 12:21:03,955 INFO L226 Difference]: Without dead ends: 26 [2018-10-02 12:21:03,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.2s impTime [2018-10-02 12:21:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-02 12:21:03,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-02 12:21:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-02 12:21:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-02 12:21:03,970 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24 [2018-10-02 12:21:03,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:03,970 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-02 12:21:03,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-02 12:21:03,971 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-02 12:21:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-02 12:21:03,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:03,972 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1] [2018-10-02 12:21:03,977 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:03,977 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:03,977 INFO L82 PathProgramCache]: Analyzing trace with hash -818603616, now seen corresponding path program 22 times [2018-10-02 12:21:03,977 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:03,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:03,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:03,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,238 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:04,238 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 [2018-10-02 12:21:04,245 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:04,259 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:04,259 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:04,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:04,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2018-10-02 12:21:04,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-02 12:21:04,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-02 12:21:04,335 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:04,335 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states. [2018-10-02 12:21:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:04,525 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-02 12:21:04,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-02 12:21:04,526 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25 [2018-10-02 12:21:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:04,526 INFO L225 Difference]: With dead ends: 29 [2018-10-02 12:21:04,527 INFO L226 Difference]: Without dead ends: 27 [2018-10-02 12:21:04,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime [2018-10-02 12:21:04,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-02 12:21:04,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-02 12:21:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-02 12:21:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-02 12:21:04,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25 [2018-10-02 12:21:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:04,532 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-02 12:21:04,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-02 12:21:04,532 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-02 12:21:04,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-02 12:21:04,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:04,533 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1] [2018-10-02 12:21:04,533 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:04,533 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:04,533 INFO L82 PathProgramCache]: Analyzing trace with hash 393087814, now seen corresponding path program 23 times [2018-10-02 12:21:04,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:04,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:04,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:04,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:04,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:04,854 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 [2018-10-02 12:21:04,862 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:04,885 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2018-10-02 12:21:04,885 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:04,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:04,955 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:04,977 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:04,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2018-10-02 12:21:04,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-02 12:21:04,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-02 12:21:04,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:04,978 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 27 states. [2018-10-02 12:21:05,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:05,164 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-10-02 12:21:05,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-02 12:21:05,166 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 26 [2018-10-02 12:21:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:05,166 INFO L225 Difference]: With dead ends: 30 [2018-10-02 12:21:05,166 INFO L226 Difference]: Without dead ends: 28 [2018-10-02 12:21:05,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:21:05,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-02 12:21:05,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-02 12:21:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-02 12:21:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-02 12:21:05,170 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2018-10-02 12:21:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:05,170 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-02 12:21:05,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-02 12:21:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-02 12:21:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-02 12:21:05,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:05,171 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1] [2018-10-02 12:21:05,171 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:05,172 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash -699183520, now seen corresponding path program 24 times [2018-10-02 12:21:05,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:05,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:05,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:05,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:05,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:05,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:05,520 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:05,539 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-02 12:21:05,539 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:05,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:05,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:05,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2018-10-02 12:21:05,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-02 12:21:05,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-02 12:21:05,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:05,654 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states. [2018-10-02 12:21:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:05,799 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-10-02 12:21:05,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-02 12:21:05,799 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27 [2018-10-02 12:21:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:05,800 INFO L225 Difference]: With dead ends: 31 [2018-10-02 12:21:05,800 INFO L226 Difference]: Without dead ends: 29 [2018-10-02 12:21:05,800 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:21:05,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-10-02 12:21:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-10-02 12:21:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-02 12:21:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-10-02 12:21:05,804 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27 [2018-10-02 12:21:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:05,805 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-10-02 12:21:05,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-02 12:21:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-10-02 12:21:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-02 12:21:05,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:05,806 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1] [2018-10-02 12:21:05,806 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:05,806 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash -199856506, now seen corresponding path program 25 times [2018-10-02 12:21:05,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:05,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:05,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:05,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:06,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:06,171 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 [2018-10-02 12:21:06,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:06,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:06,345 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:06,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2018-10-02 12:21:06,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-02 12:21:06,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-02 12:21:06,346 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:06,346 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 29 states. [2018-10-02 12:21:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:06,643 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-10-02 12:21:06,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-02 12:21:06,644 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 28 [2018-10-02 12:21:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:06,645 INFO L225 Difference]: With dead ends: 32 [2018-10-02 12:21:06,645 INFO L226 Difference]: Without dead ends: 30 [2018-10-02 12:21:06,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime [2018-10-02 12:21:06,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-10-02 12:21:06,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-10-02 12:21:06,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-10-02 12:21:06,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-10-02 12:21:06,647 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28 [2018-10-02 12:21:06,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:06,648 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-10-02 12:21:06,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-02 12:21:06,648 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-10-02 12:21:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-02 12:21:06,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:06,649 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1] [2018-10-02 12:21:06,649 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:06,649 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:06,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1900588256, now seen corresponding path program 26 times [2018-10-02 12:21:06,649 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:06,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:06,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:06,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:06,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:07,458 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 [2018-10-02 12:21:07,465 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:07,491 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:07,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:07,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:07,587 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:07,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2018-10-02 12:21:07,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-02 12:21:07,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-02 12:21:07,587 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:07,587 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states. [2018-10-02 12:21:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:07,758 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-02 12:21:07,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-02 12:21:07,759 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29 [2018-10-02 12:21:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:07,759 INFO L225 Difference]: With dead ends: 33 [2018-10-02 12:21:07,759 INFO L226 Difference]: Without dead ends: 31 [2018-10-02 12:21:07,760 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:21:07,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-02 12:21:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-02 12:21:07,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-02 12:21:07,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-02 12:21:07,764 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29 [2018-10-02 12:21:07,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:07,764 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-02 12:21:07,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-02 12:21:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-02 12:21:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-02 12:21:07,765 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:07,765 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1] [2018-10-02 12:21:07,765 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:07,765 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:07,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1211302342, now seen corresponding path program 27 times [2018-10-02 12:21:07,766 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:07,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:07,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:07,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:07,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:08,077 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:08,077 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 [2018-10-02 12:21:08,084 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:08,107 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2018-10-02 12:21:08,107 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:08,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:08,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:08,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2018-10-02 12:21:08,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-02 12:21:08,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-02 12:21:08,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:08,215 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 31 states. [2018-10-02 12:21:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:08,354 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-10-02 12:21:08,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-02 12:21:08,355 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 30 [2018-10-02 12:21:08,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:08,355 INFO L225 Difference]: With dead ends: 34 [2018-10-02 12:21:08,355 INFO L226 Difference]: Without dead ends: 32 [2018-10-02 12:21:08,356 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime [2018-10-02 12:21:08,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-10-02 12:21:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-10-02 12:21:08,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-02 12:21:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-10-02 12:21:08,360 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30 [2018-10-02 12:21:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:08,361 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-10-02 12:21:08,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-02 12:21:08,361 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-10-02 12:21:08,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-02 12:21:08,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:08,362 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1] [2018-10-02 12:21:08,362 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:08,362 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:08,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1104336928, now seen corresponding path program 28 times [2018-10-02 12:21:08,362 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:08,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:08,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:08,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:08,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:09,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:09,060 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:09,074 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:09,094 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:09,095 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:09,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:09,265 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:09,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:09,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2018-10-02 12:21:09,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-02 12:21:09,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-02 12:21:09,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:09,286 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states. [2018-10-02 12:21:09,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:09,493 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-10-02 12:21:09,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-02 12:21:09,494 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31 [2018-10-02 12:21:09,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:09,494 INFO L225 Difference]: With dead ends: 35 [2018-10-02 12:21:09,494 INFO L226 Difference]: Without dead ends: 33 [2018-10-02 12:21:09,495 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:21:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-02 12:21:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-02 12:21:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-02 12:21:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-10-02 12:21:09,499 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2018-10-02 12:21:09,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:09,500 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-10-02 12:21:09,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-02 12:21:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-10-02 12:21:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-02 12:21:09,501 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:09,501 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1] [2018-10-02 12:21:09,501 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:09,501 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash 125289734, now seen corresponding path program 29 times [2018-10-02 12:21:09,501 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:09,501 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:09,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:09,502 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:09,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:10,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:10,109 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 [2018-10-02 12:21:10,117 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:10,141 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2018-10-02 12:21:10,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:10,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:10,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:10,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 32 [2018-10-02 12:21:10,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-02 12:21:10,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-02 12:21:10,239 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:10,239 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 33 states. [2018-10-02 12:21:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:10,530 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-10-02 12:21:10,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-02 12:21:10,532 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 32 [2018-10-02 12:21:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:10,533 INFO L225 Difference]: With dead ends: 36 [2018-10-02 12:21:10,533 INFO L226 Difference]: Without dead ends: 34 [2018-10-02 12:21:10,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.4s impTime [2018-10-02 12:21:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-02 12:21:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-02 12:21:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-02 12:21:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-02 12:21:10,536 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32 [2018-10-02 12:21:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:10,536 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-02 12:21:10,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-02 12:21:10,537 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-02 12:21:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-02 12:21:10,537 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:10,537 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1] [2018-10-02 12:21:10,537 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:10,538 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:10,538 INFO L82 PathProgramCache]: Analyzing trace with hash -410989408, now seen corresponding path program 30 times [2018-10-02 12:21:10,538 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:10,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:10,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:10,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:10,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:11,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:11,069 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 [2018-10-02 12:21:11,090 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:11,133 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2018-10-02 12:21:11,133 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:11,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:11,231 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:11,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2018-10-02 12:21:11,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-02 12:21:11,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-02 12:21:11,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:11,232 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states. [2018-10-02 12:21:11,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:11,423 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-02 12:21:11,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-02 12:21:11,424 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33 [2018-10-02 12:21:11,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:11,424 INFO L225 Difference]: With dead ends: 37 [2018-10-02 12:21:11,424 INFO L226 Difference]: Without dead ends: 35 [2018-10-02 12:21:11,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.4s impTime [2018-10-02 12:21:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-02 12:21:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-02 12:21:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-02 12:21:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-02 12:21:11,429 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33 [2018-10-02 12:21:11,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:11,429 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-02 12:21:11,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-02 12:21:11,429 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-02 12:21:11,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-02 12:21:11,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:11,430 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1] [2018-10-02 12:21:11,430 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:11,430 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:11,430 INFO L82 PathProgramCache]: Analyzing trace with hash 144226374, now seen corresponding path program 31 times [2018-10-02 12:21:11,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:11,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:11,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:11,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:11,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:12,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:12,195 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 [2018-10-02 12:21:12,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:12,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:12,281 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:12,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:12,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2018-10-02 12:21:12,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-02 12:21:12,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-02 12:21:12,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:12,303 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 35 states. [2018-10-02 12:21:12,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:12,551 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-02 12:21:12,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-02 12:21:12,551 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 34 [2018-10-02 12:21:12,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:12,552 INFO L225 Difference]: With dead ends: 38 [2018-10-02 12:21:12,552 INFO L226 Difference]: Without dead ends: 36 [2018-10-02 12:21:12,553 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.6s impTime [2018-10-02 12:21:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-02 12:21:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-02 12:21:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-02 12:21:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-02 12:21:12,557 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2018-10-02 12:21:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:12,558 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-02 12:21:12,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-02 12:21:12,558 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-02 12:21:12,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-02 12:21:12,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:12,559 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1] [2018-10-02 12:21:12,559 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:12,559 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:12,559 INFO L82 PathProgramCache]: Analyzing trace with hash 176046432, now seen corresponding path program 32 times [2018-10-02 12:21:12,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:12,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:12,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:12,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:12,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:13,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:13,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:13,048 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:13,069 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:13,069 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:13,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:13,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:13,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2018-10-02 12:21:13,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-02 12:21:13,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-02 12:21:13,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:13,164 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states. [2018-10-02 12:21:13,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:13,375 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-10-02 12:21:13,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-02 12:21:13,375 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35 [2018-10-02 12:21:13,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:13,375 INFO L225 Difference]: With dead ends: 39 [2018-10-02 12:21:13,375 INFO L226 Difference]: Without dead ends: 37 [2018-10-02 12:21:13,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime [2018-10-02 12:21:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-02 12:21:13,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-02 12:21:13,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-02 12:21:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-10-02 12:21:13,379 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2018-10-02 12:21:13,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:13,379 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-10-02 12:21:13,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-02 12:21:13,380 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-10-02 12:21:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-02 12:21:13,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:13,380 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1] [2018-10-02 12:21:13,381 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:13,381 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:13,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1162468230, now seen corresponding path program 33 times [2018-10-02 12:21:13,381 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:13,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:13,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:13,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:13,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:14,285 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:14,285 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 [2018-10-02 12:21:14,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:14,322 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2018-10-02 12:21:14,323 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:14,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:14,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:14,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 36 [2018-10-02 12:21:14,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-02 12:21:14,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-02 12:21:14,463 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:14,463 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 37 states. [2018-10-02 12:21:14,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:14,694 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-10-02 12:21:14,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-02 12:21:14,695 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 36 [2018-10-02 12:21:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:14,695 INFO L225 Difference]: With dead ends: 40 [2018-10-02 12:21:14,695 INFO L226 Difference]: Without dead ends: 38 [2018-10-02 12:21:14,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.7s impTime [2018-10-02 12:21:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-02 12:21:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-10-02 12:21:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-02 12:21:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-10-02 12:21:14,699 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36 [2018-10-02 12:21:14,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:14,699 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-10-02 12:21:14,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-02 12:21:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-10-02 12:21:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-02 12:21:14,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:14,700 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1] [2018-10-02 12:21:14,700 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:14,700 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:14,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1676772896, now seen corresponding path program 34 times [2018-10-02 12:21:14,701 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:14,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:14,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,701 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:14,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:15,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:15,159 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 [2018-10-02 12:21:15,169 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:15,194 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:15,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:15,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:16,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:16,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2018-10-02 12:21:16,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-02 12:21:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-02 12:21:16,150 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:16,150 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states. [2018-10-02 12:21:16,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:16,381 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-02 12:21:16,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-02 12:21:16,382 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37 [2018-10-02 12:21:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:16,383 INFO L225 Difference]: With dead ends: 41 [2018-10-02 12:21:16,383 INFO L226 Difference]: Without dead ends: 39 [2018-10-02 12:21:16,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 0.3s impTime [2018-10-02 12:21:16,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-02 12:21:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-02 12:21:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-02 12:21:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-02 12:21:16,387 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37 [2018-10-02 12:21:16,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:16,388 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-02 12:21:16,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-02 12:21:16,388 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-02 12:21:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-02 12:21:16,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:16,388 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1] [2018-10-02 12:21:16,389 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:16,389 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:16,389 INFO L82 PathProgramCache]: Analyzing trace with hash 440348358, now seen corresponding path program 35 times [2018-10-02 12:21:16,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:16,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:16,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:16,390 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:16,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:17,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:17,317 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 [2018-10-02 12:21:17,325 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:17,356 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-10-02 12:21:17,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:17,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:17,466 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:17,487 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:17,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2018-10-02 12:21:17,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-02 12:21:17,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-02 12:21:17,487 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:17,488 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 39 states. [2018-10-02 12:21:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:17,727 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-02 12:21:17,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-02 12:21:17,728 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 38 [2018-10-02 12:21:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:17,729 INFO L225 Difference]: With dead ends: 42 [2018-10-02 12:21:17,729 INFO L226 Difference]: Without dead ends: 40 [2018-10-02 12:21:17,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.8s impTime [2018-10-02 12:21:17,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-10-02 12:21:17,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-10-02 12:21:17,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-10-02 12:21:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-10-02 12:21:17,732 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38 [2018-10-02 12:21:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:17,733 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-10-02 12:21:17,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-02 12:21:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-10-02 12:21:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-02 12:21:17,733 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:17,733 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1] [2018-10-02 12:21:17,734 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:17,734 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:17,734 INFO L82 PathProgramCache]: Analyzing trace with hash 765893344, now seen corresponding path program 36 times [2018-10-02 12:21:17,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:17,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:17,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:17,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:17,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:18,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:18,437 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 [2018-10-02 12:21:18,445 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:18,473 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-02 12:21:18,473 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:18,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:18,669 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:18,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2018-10-02 12:21:18,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-02 12:21:18,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-02 12:21:18,670 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:18,670 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states. [2018-10-02 12:21:18,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:18,957 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-02 12:21:18,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-02 12:21:18,957 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39 [2018-10-02 12:21:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:18,958 INFO L225 Difference]: With dead ends: 43 [2018-10-02 12:21:18,958 INFO L226 Difference]: Without dead ends: 41 [2018-10-02 12:21:18,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.5s impTime [2018-10-02 12:21:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-02 12:21:18,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-10-02 12:21:18,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-02 12:21:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-02 12:21:18,960 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39 [2018-10-02 12:21:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:18,961 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-02 12:21:18,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-02 12:21:18,961 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-02 12:21:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-02 12:21:18,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:18,962 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1] [2018-10-02 12:21:18,962 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:18,962 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash -2027113978, now seen corresponding path program 37 times [2018-10-02 12:21:18,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:18,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:18,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:18,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:18,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:19,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:19,716 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 [2018-10-02 12:21:19,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:19,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:19,866 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:19,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2018-10-02 12:21:19,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-02 12:21:19,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-02 12:21:19,867 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:19,867 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 41 states. [2018-10-02 12:21:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:20,118 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-10-02 12:21:20,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-02 12:21:20,119 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 40 [2018-10-02 12:21:20,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:20,119 INFO L225 Difference]: With dead ends: 44 [2018-10-02 12:21:20,119 INFO L226 Difference]: Without dead ends: 42 [2018-10-02 12:21:20,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time 0.6s impTime [2018-10-02 12:21:20,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-02 12:21:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-10-02 12:21:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-10-02 12:21:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-10-02 12:21:20,121 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2018-10-02 12:21:20,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:20,122 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-10-02 12:21:20,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-02 12:21:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-10-02 12:21:20,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-02 12:21:20,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:20,122 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1] [2018-10-02 12:21:20,123 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:20,123 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1583972256, now seen corresponding path program 38 times [2018-10-02 12:21:20,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:20,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:20,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:20,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:20,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:21,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:21,579 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:21,587 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:21,612 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:21,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:21,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:21,719 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:21,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2018-10-02 12:21:21,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-02 12:21:21,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-02 12:21:21,720 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:21,720 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states. [2018-10-02 12:21:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:22,046 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-02 12:21:22,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-02 12:21:22,046 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41 [2018-10-02 12:21:22,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:22,046 INFO L225 Difference]: With dead ends: 45 [2018-10-02 12:21:22,047 INFO L226 Difference]: Without dead ends: 43 [2018-10-02 12:21:22,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.2s impTime [2018-10-02 12:21:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-02 12:21:22,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-02 12:21:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-02 12:21:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-02 12:21:22,052 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41 [2018-10-02 12:21:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:22,055 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-02 12:21:22,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-02 12:21:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-02 12:21:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-02 12:21:22,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:22,056 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1] [2018-10-02 12:21:22,056 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:22,056 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:22,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1858495814, now seen corresponding path program 39 times [2018-10-02 12:21:22,056 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:22,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:22,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:22,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:22,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:23,058 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:23,058 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 [2018-10-02 12:21:23,068 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:23,101 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2018-10-02 12:21:23,101 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:23,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:23,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:23,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2018-10-02 12:21:23,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-02 12:21:23,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-02 12:21:23,241 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:23,241 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 43 states. [2018-10-02 12:21:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:23,528 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-10-02 12:21:23,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-02 12:21:23,529 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 42 [2018-10-02 12:21:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:23,529 INFO L225 Difference]: With dead ends: 46 [2018-10-02 12:21:23,529 INFO L226 Difference]: Without dead ends: 44 [2018-10-02 12:21:23,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime [2018-10-02 12:21:23,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-10-02 12:21:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-10-02 12:21:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-02 12:21:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-02 12:21:23,532 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42 [2018-10-02 12:21:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:23,533 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-02 12:21:23,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-02 12:21:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-02 12:21:23,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-02 12:21:23,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:23,534 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1] [2018-10-02 12:21:23,534 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:23,534 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:23,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1778791520, now seen corresponding path program 40 times [2018-10-02 12:21:23,534 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:23,534 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:23,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:23,535 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:23,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:24,251 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:24,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:24,251 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 [2018-10-02 12:21:24,260 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:24,285 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:24,285 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:24,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:24,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:24,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2018-10-02 12:21:24,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-02 12:21:24,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-02 12:21:24,395 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:24,395 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states. [2018-10-02 12:21:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:24,634 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-02 12:21:24,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-02 12:21:24,634 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43 [2018-10-02 12:21:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:24,635 INFO L225 Difference]: With dead ends: 47 [2018-10-02 12:21:24,635 INFO L226 Difference]: Without dead ends: 45 [2018-10-02 12:21:24,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:21:24,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-02 12:21:24,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-10-02 12:21:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-02 12:21:24,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-10-02 12:21:24,639 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43 [2018-10-02 12:21:24,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:24,639 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-10-02 12:21:24,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-02 12:21:24,639 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-10-02 12:21:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-02 12:21:24,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:24,639 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1] [2018-10-02 12:21:24,640 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:24,640 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:24,640 INFO L82 PathProgramCache]: Analyzing trace with hash -692041594, now seen corresponding path program 41 times [2018-10-02 12:21:24,640 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:24,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:24,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:24,641 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:24,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:26,128 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:26,128 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 [2018-10-02 12:21:26,136 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:26,170 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2018-10-02 12:21:26,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:26,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:26,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:26,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 44 [2018-10-02 12:21:26,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-02 12:21:26,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-02 12:21:26,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:26,310 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 45 states. [2018-10-02 12:21:26,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:26,681 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-10-02 12:21:26,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-02 12:21:26,681 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 44 [2018-10-02 12:21:26,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:26,682 INFO L225 Difference]: With dead ends: 48 [2018-10-02 12:21:26,682 INFO L226 Difference]: Without dead ends: 46 [2018-10-02 12:21:26,682 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:21:26,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-02 12:21:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-02 12:21:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-02 12:21:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-02 12:21:26,684 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44 [2018-10-02 12:21:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:26,684 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-02 12:21:26,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-02 12:21:26,684 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-02 12:21:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-02 12:21:26,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:26,685 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1] [2018-10-02 12:21:26,685 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:26,685 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash 21543200, now seen corresponding path program 42 times [2018-10-02 12:21:26,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:26,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:26,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:26,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:26,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:28,041 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:28,041 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:28,049 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:28,083 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2018-10-02 12:21:28,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:28,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:28,217 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:28,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2018-10-02 12:21:28,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-02 12:21:28,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-02 12:21:28,218 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:28,218 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states. [2018-10-02 12:21:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:28,513 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-02 12:21:28,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-02 12:21:28,513 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45 [2018-10-02 12:21:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:28,514 INFO L225 Difference]: With dead ends: 49 [2018-10-02 12:21:28,514 INFO L226 Difference]: Without dead ends: 47 [2018-10-02 12:21:28,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime [2018-10-02 12:21:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-02 12:21:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-02 12:21:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-02 12:21:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-02 12:21:28,518 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45 [2018-10-02 12:21:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:28,518 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-02 12:21:28,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-02 12:21:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-02 12:21:28,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-02 12:21:28,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:28,518 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1] [2018-10-02 12:21:28,518 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:28,519 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:28,519 INFO L82 PathProgramCache]: Analyzing trace with hash 667835334, now seen corresponding path program 43 times [2018-10-02 12:21:28,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:28,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:28,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:28,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:28,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:29,638 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:29,638 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 [2018-10-02 12:21:29,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:29,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:29,788 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:29,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:29,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 46 [2018-10-02 12:21:29,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-02 12:21:29,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-02 12:21:29,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:29,809 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 47 states. [2018-10-02 12:21:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:30,118 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2018-10-02 12:21:30,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-02 12:21:30,118 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 46 [2018-10-02 12:21:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:30,119 INFO L225 Difference]: With dead ends: 50 [2018-10-02 12:21:30,119 INFO L226 Difference]: Without dead ends: 48 [2018-10-02 12:21:30,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime [2018-10-02 12:21:30,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-02 12:21:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-02 12:21:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-02 12:21:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-10-02 12:21:30,122 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46 [2018-10-02 12:21:30,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:30,122 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-10-02 12:21:30,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-02 12:21:30,122 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-10-02 12:21:30,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-02 12:21:30,123 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:30,123 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1] [2018-10-02 12:21:30,123 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:30,123 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:30,123 INFO L82 PathProgramCache]: Analyzing trace with hash -771944992, now seen corresponding path program 44 times [2018-10-02 12:21:30,123 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:30,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:30,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:30,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:30,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:31,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:31,275 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 [2018-10-02 12:21:31,285 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:31,310 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:31,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:31,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:31,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:31,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 47 [2018-10-02 12:21:31,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-02 12:21:31,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-02 12:21:31,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:31,449 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states. [2018-10-02 12:21:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:31,811 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-02 12:21:31,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-02 12:21:31,812 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47 [2018-10-02 12:21:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:31,812 INFO L225 Difference]: With dead ends: 51 [2018-10-02 12:21:31,812 INFO L226 Difference]: Without dead ends: 49 [2018-10-02 12:21:31,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:21:31,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-02 12:21:31,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-10-02 12:21:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-02 12:21:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-02 12:21:31,815 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47 [2018-10-02 12:21:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:31,816 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-02 12:21:31,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-02 12:21:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-02 12:21:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-02 12:21:31,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:31,817 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1] [2018-10-02 12:21:31,817 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:31,817 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1839505158, now seen corresponding path program 45 times [2018-10-02 12:21:31,817 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:31,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:31,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,818 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:31,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:32,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:32,844 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 [2018-10-02 12:21:32,853 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:32,890 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-10-02 12:21:32,890 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:32,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:33,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:33,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:33,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 48 [2018-10-02 12:21:33,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-02 12:21:33,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-02 12:21:33,038 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:33,038 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 49 states. [2018-10-02 12:21:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:33,628 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-02 12:21:33,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-02 12:21:33,628 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 48 [2018-10-02 12:21:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:33,629 INFO L225 Difference]: With dead ends: 52 [2018-10-02 12:21:33,629 INFO L226 Difference]: Without dead ends: 50 [2018-10-02 12:21:33,629 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time 0.8s impTime [2018-10-02 12:21:33,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-10-02 12:21:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-10-02 12:21:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-10-02 12:21:33,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2018-10-02 12:21:33,632 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48 [2018-10-02 12:21:33,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:33,633 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2018-10-02 12:21:33,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-02 12:21:33,633 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2018-10-02 12:21:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-02 12:21:33,633 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:33,634 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1] [2018-10-02 12:21:33,634 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:33,634 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1190081184, now seen corresponding path program 46 times [2018-10-02 12:21:33,634 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:33,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:33,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:33,635 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:33,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:34,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:34,934 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:34,942 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:34,974 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:34,974 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:34,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:35,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:35,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 49 [2018-10-02 12:21:35,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-02 12:21:35,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-02 12:21:35,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:35,286 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states. [2018-10-02 12:21:35,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:35,577 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-02 12:21:35,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-02 12:21:35,578 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49 [2018-10-02 12:21:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:35,579 INFO L225 Difference]: With dead ends: 53 [2018-10-02 12:21:35,579 INFO L226 Difference]: Without dead ends: 51 [2018-10-02 12:21:35,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.0s impTime [2018-10-02 12:21:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-02 12:21:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-02 12:21:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-02 12:21:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-02 12:21:35,582 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49 [2018-10-02 12:21:35,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:35,582 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-02 12:21:35,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-02 12:21:35,582 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-02 12:21:35,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-02 12:21:35,583 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:35,583 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1] [2018-10-02 12:21:35,583 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:35,583 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1762192826, now seen corresponding path program 47 times [2018-10-02 12:21:35,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:35,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:35,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:35,584 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:35,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:36,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:36,295 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 [2018-10-02 12:21:36,303 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:36,340 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2018-10-02 12:21:36,340 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:36,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:36,473 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:36,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 50 [2018-10-02 12:21:36,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-02 12:21:36,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-02 12:21:36,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:36,474 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 51 states. [2018-10-02 12:21:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:36,743 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-02 12:21:36,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-02 12:21:36,749 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 50 [2018-10-02 12:21:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:36,750 INFO L225 Difference]: With dead ends: 54 [2018-10-02 12:21:36,750 INFO L226 Difference]: Without dead ends: 52 [2018-10-02 12:21:36,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.5s impTime [2018-10-02 12:21:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-02 12:21:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-10-02 12:21:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-02 12:21:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2018-10-02 12:21:36,752 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50 [2018-10-02 12:21:36,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:36,752 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2018-10-02 12:21:36,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-02 12:21:36,753 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2018-10-02 12:21:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-10-02 12:21:36,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:36,755 INFO L375 BasicCegarLoop]: trace histogram [48, 1, 1, 1] [2018-10-02 12:21:36,755 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:36,755 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:36,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1206593376, now seen corresponding path program 48 times [2018-10-02 12:21:36,756 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:36,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:36,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:36,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:36,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:37,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:37,861 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 [2018-10-02 12:21:37,869 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:37,908 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-02 12:21:37,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:37,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:38,041 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:38,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 51 [2018-10-02 12:21:38,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-02 12:21:38,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-02 12:21:38,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:38,042 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states. [2018-10-02 12:21:38,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:38,247 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-02 12:21:38,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-02 12:21:38,248 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51 [2018-10-02 12:21:38,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:38,249 INFO L225 Difference]: With dead ends: 55 [2018-10-02 12:21:38,249 INFO L226 Difference]: Without dead ends: 53 [2018-10-02 12:21:38,249 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.9s impTime [2018-10-02 12:21:38,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-10-02 12:21:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-10-02 12:21:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-10-02 12:21:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2018-10-02 12:21:38,251 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 51 [2018-10-02 12:21:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:38,252 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2018-10-02 12:21:38,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-02 12:21:38,252 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2018-10-02 12:21:38,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-02 12:21:38,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:38,253 INFO L375 BasicCegarLoop]: trace histogram [49, 1, 1, 1] [2018-10-02 12:21:38,253 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:38,253 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:38,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1250314874, now seen corresponding path program 49 times [2018-10-02 12:21:38,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:38,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:38,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:38,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:38,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:39,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:39,930 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 [2018-10-02 12:21:39,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:39,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:40,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:40,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 52 [2018-10-02 12:21:40,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-02 12:21:40,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-02 12:21:40,109 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:40,109 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 53 states. [2018-10-02 12:21:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:40,314 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-10-02 12:21:40,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-02 12:21:40,314 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 52 [2018-10-02 12:21:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:40,315 INFO L225 Difference]: With dead ends: 56 [2018-10-02 12:21:40,315 INFO L226 Difference]: Without dead ends: 54 [2018-10-02 12:21:40,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time 1.3s impTime [2018-10-02 12:21:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-02 12:21:40,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-02 12:21:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-02 12:21:40,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-10-02 12:21:40,317 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 52 [2018-10-02 12:21:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:40,317 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-10-02 12:21:40,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-02 12:21:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-10-02 12:21:40,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-02 12:21:40,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:40,318 INFO L375 BasicCegarLoop]: trace histogram [50, 1, 1, 1] [2018-10-02 12:21:40,318 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:40,318 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash -105059296, now seen corresponding path program 50 times [2018-10-02 12:21:40,318 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:40,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:40,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:40,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:40,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:41,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:41,322 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 [2018-10-02 12:21:41,330 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:41,379 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:41,380 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:41,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:41,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:41,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 53 [2018-10-02 12:21:41,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-02 12:21:41,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-02 12:21:41,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:41,924 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states. [2018-10-02 12:21:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:42,158 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-02 12:21:42,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-02 12:21:42,158 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53 [2018-10-02 12:21:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:42,159 INFO L225 Difference]: With dead ends: 57 [2018-10-02 12:21:42,159 INFO L226 Difference]: Without dead ends: 55 [2018-10-02 12:21:42,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 0.8s impTime [2018-10-02 12:21:42,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-02 12:21:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-02 12:21:42,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-02 12:21:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-02 12:21:42,162 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 53 [2018-10-02 12:21:42,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:42,162 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-02 12:21:42,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-02 12:21:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-02 12:21:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-02 12:21:42,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:42,163 INFO L375 BasicCegarLoop]: trace histogram [51, 1, 1, 1] [2018-10-02 12:21:42,163 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:42,163 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:42,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1038125254, now seen corresponding path program 51 times [2018-10-02 12:21:42,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:42,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:42,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:42,165 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:42,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:43,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:43,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:21:43,253 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:43,293 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2018-10-02 12:21:43,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:43,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:43,472 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:43,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 54 [2018-10-02 12:21:43,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-02 12:21:43,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-02 12:21:43,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:43,473 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 55 states. [2018-10-02 12:21:43,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:43,764 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-10-02 12:21:43,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-02 12:21:43,764 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 54 [2018-10-02 12:21:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:43,765 INFO L225 Difference]: With dead ends: 58 [2018-10-02 12:21:43,765 INFO L226 Difference]: Without dead ends: 56 [2018-10-02 12:21:43,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:21:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-02 12:21:43,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-02 12:21:43,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-02 12:21:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-10-02 12:21:43,768 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 54 [2018-10-02 12:21:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:43,768 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-10-02 12:21:43,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-02 12:21:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-10-02 12:21:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-02 12:21:43,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:43,769 INFO L375 BasicCegarLoop]: trace histogram [52, 1, 1, 1] [2018-10-02 12:21:43,769 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:43,770 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:43,770 INFO L82 PathProgramCache]: Analyzing trace with hash 2117107936, now seen corresponding path program 52 times [2018-10-02 12:21:43,770 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:43,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:43,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:43,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:45,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:45,349 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 [2018-10-02 12:21:45,356 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:45,390 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:45,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:45,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:45,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:45,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 55 [2018-10-02 12:21:45,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-02 12:21:45,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-02 12:21:45,530 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:45,530 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states. [2018-10-02 12:21:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:45,892 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2018-10-02 12:21:45,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-02 12:21:45,893 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55 [2018-10-02 12:21:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:45,894 INFO L225 Difference]: With dead ends: 59 [2018-10-02 12:21:45,894 INFO L226 Difference]: Without dead ends: 57 [2018-10-02 12:21:45,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime [2018-10-02 12:21:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-02 12:21:45,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-02 12:21:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-02 12:21:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-02 12:21:45,897 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 55 [2018-10-02 12:21:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:45,897 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-02 12:21:45,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-02 12:21:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-02 12:21:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-02 12:21:45,898 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:45,898 INFO L375 BasicCegarLoop]: trace histogram [53, 1, 1, 1] [2018-10-02 12:21:45,898 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:45,898 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:45,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1205832710, now seen corresponding path program 53 times [2018-10-02 12:21:45,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:45,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:45,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:45,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:45,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:47,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:47,030 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 [2018-10-02 12:21:47,037 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:21:47,083 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2018-10-02 12:21:47,083 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:47,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:47,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:47,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 56 [2018-10-02 12:21:47,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-02 12:21:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-02 12:21:47,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:47,265 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 57 states. [2018-10-02 12:21:47,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:47,751 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2018-10-02 12:21:47,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-02 12:21:47,751 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 56 [2018-10-02 12:21:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:47,752 INFO L225 Difference]: With dead ends: 60 [2018-10-02 12:21:47,752 INFO L226 Difference]: Without dead ends: 58 [2018-10-02 12:21:47,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime [2018-10-02 12:21:47,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-02 12:21:47,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-10-02 12:21:47,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-10-02 12:21:47,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2018-10-02 12:21:47,754 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 56 [2018-10-02 12:21:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:47,754 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2018-10-02 12:21:47,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-02 12:21:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2018-10-02 12:21:47,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-02 12:21:47,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:47,755 INFO L375 BasicCegarLoop]: trace histogram [54, 1, 1, 1] [2018-10-02 12:21:47,755 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:47,755 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:47,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1273895520, now seen corresponding path program 54 times [2018-10-02 12:21:47,755 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:47,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:47,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:47,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:48,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:48,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:48,765 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 [2018-10-02 12:21:48,772 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:21:48,816 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-10-02 12:21:48,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:48,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:49,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:49,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 57 [2018-10-02 12:21:49,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-02 12:21:49,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-02 12:21:49,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:49,061 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states. [2018-10-02 12:21:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:49,315 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-02 12:21:49,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-02 12:21:49,316 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57 [2018-10-02 12:21:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:49,317 INFO L225 Difference]: With dead ends: 61 [2018-10-02 12:21:49,317 INFO L226 Difference]: Without dead ends: 59 [2018-10-02 12:21:49,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime [2018-10-02 12:21:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-02 12:21:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-02 12:21:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-02 12:21:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-02 12:21:49,321 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 57 [2018-10-02 12:21:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:49,321 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-02 12:21:49,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-02 12:21:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-02 12:21:49,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-02 12:21:49,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:49,322 INFO L375 BasicCegarLoop]: trace histogram [55, 1, 1, 1] [2018-10-02 12:21:49,322 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:49,322 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:49,322 INFO L82 PathProgramCache]: Analyzing trace with hash -836059322, now seen corresponding path program 55 times [2018-10-02 12:21:49,322 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:49,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:49,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:49,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:49,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:50,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:50,915 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 [2018-10-02 12:21:50,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:50,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:51,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:51,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 58 [2018-10-02 12:21:51,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-02 12:21:51,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-02 12:21:51,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:51,120 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 59 states. [2018-10-02 12:21:51,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:51,486 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-02 12:21:51,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-02 12:21:51,487 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 58 [2018-10-02 12:21:51,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:51,488 INFO L225 Difference]: With dead ends: 62 [2018-10-02 12:21:51,488 INFO L226 Difference]: Without dead ends: 60 [2018-10-02 12:21:51,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime [2018-10-02 12:21:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-02 12:21:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-02 12:21:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-02 12:21:51,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-10-02 12:21:51,490 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 58 [2018-10-02 12:21:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:51,491 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-10-02 12:21:51,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-02 12:21:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-10-02 12:21:51,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-02 12:21:51,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:51,491 INFO L375 BasicCegarLoop]: trace histogram [56, 1, 1, 1] [2018-10-02 12:21:51,491 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:51,491 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:51,492 INFO L82 PathProgramCache]: Analyzing trace with hash -148039072, now seen corresponding path program 56 times [2018-10-02 12:21:51,492 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:51,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:51,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:51,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:21:51,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:51,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:53,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:53,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:53,119 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 [2018-10-02 12:21:53,126 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:21:53,155 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:21:53,155 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:53,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:53,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:53,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 59 [2018-10-02 12:21:53,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-02 12:21:53,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-02 12:21:53,302 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:53,303 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states. [2018-10-02 12:21:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:53,539 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-10-02 12:21:53,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-02 12:21:53,539 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59 [2018-10-02 12:21:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:53,540 INFO L225 Difference]: With dead ends: 63 [2018-10-02 12:21:53,540 INFO L226 Difference]: Without dead ends: 61 [2018-10-02 12:21:53,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.3s impTime [2018-10-02 12:21:53,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-10-02 12:21:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-10-02 12:21:53,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-02 12:21:53,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-10-02 12:21:53,544 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 59 [2018-10-02 12:21:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:53,545 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-10-02 12:21:53,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-02 12:21:53,545 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-10-02 12:21:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-02 12:21:53,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:53,546 INFO L375 BasicCegarLoop]: trace histogram [57, 1, 1, 1] [2018-10-02 12:21:53,546 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:53,546 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:53,546 INFO L82 PathProgramCache]: Analyzing trace with hash -294247802, now seen corresponding path program 57 times [2018-10-02 12:21:53,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:53,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:53,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:53,547 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:53,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:54,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:54,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:54,891 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 [2018-10-02 12:21:54,899 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:21:54,957 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-10-02 12:21:54,957 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:54,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:55,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:55,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 60 [2018-10-02 12:21:55,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-02 12:21:55,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-02 12:21:55,189 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:55,189 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 61 states. [2018-10-02 12:21:55,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:55,553 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-10-02 12:21:55,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-02 12:21:55,554 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 60 [2018-10-02 12:21:55,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:55,554 INFO L225 Difference]: With dead ends: 64 [2018-10-02 12:21:55,554 INFO L226 Difference]: Without dead ends: 62 [2018-10-02 12:21:55,555 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time 1.1s impTime [2018-10-02 12:21:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-10-02 12:21:55,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-10-02 12:21:55,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-10-02 12:21:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-10-02 12:21:55,558 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 60 [2018-10-02 12:21:55,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:55,558 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-10-02 12:21:55,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-02 12:21:55,558 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-10-02 12:21:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-10-02 12:21:55,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:55,559 INFO L375 BasicCegarLoop]: trace histogram [58, 1, 1, 1] [2018-10-02 12:21:55,559 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:55,559 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:55,559 INFO L82 PathProgramCache]: Analyzing trace with hash -531751136, now seen corresponding path program 58 times [2018-10-02 12:21:55,559 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:55,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:55,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:55,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:55,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:21:59,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:59,012 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:21:59,012 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 [2018-10-02 12:21:59,036 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:21:59,073 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:21:59,073 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:21:59,076 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:21:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:21:59,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:21:59,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 61 [2018-10-02 12:21:59,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-02 12:21:59,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-02 12:21:59,236 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:21:59,236 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states. [2018-10-02 12:21:59,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:21:59,580 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-02 12:21:59,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-02 12:21:59,581 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61 [2018-10-02 12:21:59,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:21:59,581 INFO L225 Difference]: With dead ends: 65 [2018-10-02 12:21:59,581 INFO L226 Difference]: Without dead ends: 63 [2018-10-02 12:21:59,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.9s impTime [2018-10-02 12:21:59,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-02 12:21:59,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-02 12:21:59,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-02 12:21:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-02 12:21:59,584 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 61 [2018-10-02 12:21:59,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:21:59,584 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-02 12:21:59,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-02 12:21:59,585 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-02 12:21:59,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-02 12:21:59,585 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:21:59,585 INFO L375 BasicCegarLoop]: trace histogram [59, 1, 1, 1] [2018-10-02 12:21:59,585 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:21:59,585 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:21:59,585 INFO L82 PathProgramCache]: Analyzing trace with hash 695580102, now seen corresponding path program 59 times [2018-10-02 12:21:59,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:21:59,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:21:59,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:59,586 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:21:59,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:21:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:01,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:01,032 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 [2018-10-02 12:22:01,039 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:01,089 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2018-10-02 12:22:01,089 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:01,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:01,325 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:01,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 62 [2018-10-02 12:22:01,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-02 12:22:01,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-02 12:22:01,327 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:01,327 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 63 states. [2018-10-02 12:22:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:01,590 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-10-02 12:22:01,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-02 12:22:01,590 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 62 [2018-10-02 12:22:01,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:01,591 INFO L225 Difference]: With dead ends: 66 [2018-10-02 12:22:01,591 INFO L226 Difference]: Without dead ends: 64 [2018-10-02 12:22:01,591 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime [2018-10-02 12:22:01,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-02 12:22:01,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-10-02 12:22:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-10-02 12:22:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-10-02 12:22:01,594 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 62 [2018-10-02 12:22:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:01,594 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-10-02 12:22:01,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-02 12:22:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-10-02 12:22:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-02 12:22:01,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:01,595 INFO L375 BasicCegarLoop]: trace histogram [60, 1, 1, 1] [2018-10-02 12:22:01,595 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:01,595 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:01,595 INFO L82 PathProgramCache]: Analyzing trace with hash 88142816, now seen corresponding path program 60 times [2018-10-02 12:22:01,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:01,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:01,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:01,596 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:01,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:04,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:04,181 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 [2018-10-02 12:22:04,188 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:04,236 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-02 12:22:04,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:04,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:04,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:04,393 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 63 [2018-10-02 12:22:04,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-02 12:22:04,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-02 12:22:04,394 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:04,394 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states. [2018-10-02 12:22:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:04,779 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-10-02 12:22:04,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-02 12:22:04,779 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63 [2018-10-02 12:22:04,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:04,780 INFO L225 Difference]: With dead ends: 67 [2018-10-02 12:22:04,780 INFO L226 Difference]: Without dead ends: 65 [2018-10-02 12:22:04,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime [2018-10-02 12:22:04,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-10-02 12:22:04,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-10-02 12:22:04,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-10-02 12:22:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2018-10-02 12:22:04,783 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 63 [2018-10-02 12:22:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:04,784 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2018-10-02 12:22:04,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-02 12:22:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2018-10-02 12:22:04,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-02 12:22:04,784 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:04,784 INFO L375 BasicCegarLoop]: trace histogram [61, 1, 1, 1] [2018-10-02 12:22:04,785 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:04,785 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:04,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1562543866, now seen corresponding path program 61 times [2018-10-02 12:22:04,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:04,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:04,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:04,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:06,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:06,378 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 [2018-10-02 12:22:06,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:06,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:06,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:06,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 64 [2018-10-02 12:22:06,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-02 12:22:06,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-02 12:22:06,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:06,577 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 65 states. [2018-10-02 12:22:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:06,960 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-10-02 12:22:06,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-02 12:22:06,960 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 64 [2018-10-02 12:22:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:06,961 INFO L225 Difference]: With dead ends: 68 [2018-10-02 12:22:06,961 INFO L226 Difference]: Without dead ends: 66 [2018-10-02 12:22:06,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time 1.4s impTime [2018-10-02 12:22:06,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-02 12:22:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-10-02 12:22:06,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-10-02 12:22:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-10-02 12:22:06,964 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 64 [2018-10-02 12:22:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:06,964 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-10-02 12:22:06,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-02 12:22:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-10-02 12:22:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-02 12:22:06,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:06,964 INFO L375 BasicCegarLoop]: trace histogram [62, 1, 1, 1] [2018-10-02 12:22:06,964 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:06,965 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:06,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1194223456, now seen corresponding path program 62 times [2018-10-02 12:22:06,965 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:06,965 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:06,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:06,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:06,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:08,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:08,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:08,793 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 [2018-10-02 12:22:08,802 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:08,839 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:08,839 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:08,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:08,997 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:08,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 65 [2018-10-02 12:22:08,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-02 12:22:08,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-02 12:22:08,999 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:08,999 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states. [2018-10-02 12:22:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:09,465 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-02 12:22:09,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-02 12:22:09,465 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65 [2018-10-02 12:22:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:09,466 INFO L225 Difference]: With dead ends: 69 [2018-10-02 12:22:09,466 INFO L226 Difference]: Without dead ends: 67 [2018-10-02 12:22:09,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time 1.6s impTime [2018-10-02 12:22:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-02 12:22:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-02 12:22:09,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-02 12:22:09,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-02 12:22:09,470 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 65 [2018-10-02 12:22:09,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:09,470 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-02 12:22:09,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-02 12:22:09,470 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-02 12:22:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-02 12:22:09,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:09,471 INFO L375 BasicCegarLoop]: trace histogram [63, 1, 1, 1] [2018-10-02 12:22:09,471 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:09,471 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:09,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1633774662, now seen corresponding path program 63 times [2018-10-02 12:22:09,471 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:09,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:09,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:09,472 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:09,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:11,245 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:11,245 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:22:11,256 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:11,336 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2018-10-02 12:22:11,336 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:11,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:11,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:11,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:11,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 66 [2018-10-02 12:22:11,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-02 12:22:11,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-02 12:22:11,756 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:11,757 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 67 states. [2018-10-02 12:22:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:12,237 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-02 12:22:12,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-02 12:22:12,238 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 66 [2018-10-02 12:22:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:12,239 INFO L225 Difference]: With dead ends: 70 [2018-10-02 12:22:12,239 INFO L226 Difference]: Without dead ends: 68 [2018-10-02 12:22:12,239 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.6s impTime [2018-10-02 12:22:12,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-10-02 12:22:12,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-10-02 12:22:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-10-02 12:22:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-10-02 12:22:12,243 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 66 [2018-10-02 12:22:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:12,243 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-10-02 12:22:12,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-02 12:22:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-10-02 12:22:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-02 12:22:12,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:12,244 INFO L375 BasicCegarLoop]: trace histogram [64, 1, 1, 1] [2018-10-02 12:22:12,244 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:12,244 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:12,245 INFO L82 PathProgramCache]: Analyzing trace with hash -892596896, now seen corresponding path program 64 times [2018-10-02 12:22:12,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:12,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:12,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:12,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:12,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:14,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:14,528 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 [2018-10-02 12:22:14,543 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:14,599 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:14,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:14,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:14,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:14,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 67 [2018-10-02 12:22:14,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-02 12:22:14,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-02 12:22:14,796 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:14,796 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states. [2018-10-02 12:22:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:15,062 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-10-02 12:22:15,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-02 12:22:15,065 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67 [2018-10-02 12:22:15,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:15,065 INFO L225 Difference]: With dead ends: 71 [2018-10-02 12:22:15,065 INFO L226 Difference]: Without dead ends: 69 [2018-10-02 12:22:15,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime [2018-10-02 12:22:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-10-02 12:22:15,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-10-02 12:22:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-10-02 12:22:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-10-02 12:22:15,069 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 67 [2018-10-02 12:22:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:15,069 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-10-02 12:22:15,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-02 12:22:15,069 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-10-02 12:22:15,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-02 12:22:15,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:15,070 INFO L375 BasicCegarLoop]: trace histogram [65, 1, 1, 1] [2018-10-02 12:22:15,070 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:15,070 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:15,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1900703866, now seen corresponding path program 65 times [2018-10-02 12:22:15,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:15,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:15,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,071 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:15,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:16,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:16,399 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 [2018-10-02 12:22:16,406 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:16,462 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2018-10-02 12:22:16,462 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:16,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:16,625 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:16,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 68 [2018-10-02 12:22:16,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-02 12:22:16,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-02 12:22:16,626 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:16,626 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 69 states. [2018-10-02 12:22:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:16,979 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2018-10-02 12:22:16,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-02 12:22:16,979 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 68 [2018-10-02 12:22:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:16,980 INFO L225 Difference]: With dead ends: 72 [2018-10-02 12:22:16,980 INFO L226 Difference]: Without dead ends: 70 [2018-10-02 12:22:16,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time 1.1s impTime [2018-10-02 12:22:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-10-02 12:22:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-10-02 12:22:16,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-10-02 12:22:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-10-02 12:22:16,983 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 68 [2018-10-02 12:22:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:16,983 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-10-02 12:22:16,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-02 12:22:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-10-02 12:22:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-02 12:22:16,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:16,984 INFO L375 BasicCegarLoop]: trace histogram [66, 1, 1, 1] [2018-10-02 12:22:16,984 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:16,984 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:16,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1207718432, now seen corresponding path program 66 times [2018-10-02 12:22:16,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:16,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:16,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:16,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:16,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:19,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:19,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:19,393 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 [2018-10-02 12:22:19,402 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:19,456 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-10-02 12:22:19,456 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:19,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:19,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:19,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 69 [2018-10-02 12:22:19,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-02 12:22:19,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-02 12:22:19,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:19,935 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states. [2018-10-02 12:22:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:20,351 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-02 12:22:20,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-02 12:22:20,352 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69 [2018-10-02 12:22:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:20,352 INFO L225 Difference]: With dead ends: 73 [2018-10-02 12:22:20,353 INFO L226 Difference]: Without dead ends: 71 [2018-10-02 12:22:20,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time 2.2s impTime [2018-10-02 12:22:20,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-02 12:22:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-02 12:22:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-02 12:22:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-02 12:22:20,355 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 69 [2018-10-02 12:22:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:20,355 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-02 12:22:20,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-02 12:22:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-02 12:22:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-02 12:22:20,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:20,355 INFO L375 BasicCegarLoop]: trace histogram [67, 1, 1, 1] [2018-10-02 12:22:20,356 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:20,356 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1215438138, now seen corresponding path program 67 times [2018-10-02 12:22:20,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:20,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:20,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:20,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:22,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:22,505 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 [2018-10-02 12:22:22,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:22,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:22,722 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:22,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 70 [2018-10-02 12:22:22,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-02 12:22:22,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-02 12:22:22,723 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:22,723 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 71 states. [2018-10-02 12:22:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:23,158 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2018-10-02 12:22:23,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-02 12:22:23,158 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 70 [2018-10-02 12:22:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:23,159 INFO L225 Difference]: With dead ends: 74 [2018-10-02 12:22:23,159 INFO L226 Difference]: Without dead ends: 72 [2018-10-02 12:22:23,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime [2018-10-02 12:22:23,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-10-02 12:22:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-10-02 12:22:23,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-02 12:22:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-10-02 12:22:23,162 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 70 [2018-10-02 12:22:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:23,162 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-10-02 12:22:23,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-02 12:22:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-10-02 12:22:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-02 12:22:23,163 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:23,163 INFO L375 BasicCegarLoop]: trace histogram [68, 1, 1, 1] [2018-10-02 12:22:23,163 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:23,163 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:23,164 INFO L82 PathProgramCache]: Analyzing trace with hash 976119520, now seen corresponding path program 68 times [2018-10-02 12:22:23,164 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:23,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:23,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:23,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:23,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:25,225 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:25,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:22:25,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:25,273 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:25,274 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:25,276 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:25,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:25,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 71 [2018-10-02 12:22:25,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-02 12:22:25,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-02 12:22:25,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:25,441 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states. [2018-10-02 12:22:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:25,844 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-10-02 12:22:25,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-02 12:22:25,845 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71 [2018-10-02 12:22:25,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:25,846 INFO L225 Difference]: With dead ends: 75 [2018-10-02 12:22:25,846 INFO L226 Difference]: Without dead ends: 73 [2018-10-02 12:22:25,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime [2018-10-02 12:22:25,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-10-02 12:22:25,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-10-02 12:22:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-02 12:22:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-10-02 12:22:25,849 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 71 [2018-10-02 12:22:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:25,850 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-10-02 12:22:25,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-02 12:22:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-10-02 12:22:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-10-02 12:22:25,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:25,850 INFO L375 BasicCegarLoop]: trace histogram [69, 1, 1, 1] [2018-10-02 12:22:25,851 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:25,851 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:25,851 INFO L82 PathProgramCache]: Analyzing trace with hash 194930182, now seen corresponding path program 69 times [2018-10-02 12:22:25,851 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:25,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:25,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:25,852 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:25,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:28,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:28,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:28,086 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 [2018-10-02 12:22:28,093 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:28,168 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2018-10-02 12:22:28,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:28,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:29,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:29,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 72 [2018-10-02 12:22:29,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-02 12:22:29,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-02 12:22:29,561 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:29,561 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 73 states. [2018-10-02 12:22:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:30,094 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-10-02 12:22:30,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-02 12:22:30,095 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 72 [2018-10-02 12:22:30,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:30,095 INFO L225 Difference]: With dead ends: 76 [2018-10-02 12:22:30,095 INFO L226 Difference]: Without dead ends: 74 [2018-10-02 12:22:30,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 2.0s impTime [2018-10-02 12:22:30,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-02 12:22:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-10-02 12:22:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-10-02 12:22:30,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-10-02 12:22:30,098 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 72 [2018-10-02 12:22:30,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:30,098 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-10-02 12:22:30,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-02 12:22:30,099 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-10-02 12:22:30,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-02 12:22:30,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:30,100 INFO L375 BasicCegarLoop]: trace histogram [70, 1, 1, 1] [2018-10-02 12:22:30,100 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:30,100 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:30,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1747864480, now seen corresponding path program 70 times [2018-10-02 12:22:30,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:30,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:30,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:30,101 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:30,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:32,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:32,681 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 [2018-10-02 12:22:32,690 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:32,744 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:32,744 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:32,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:32,938 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:32,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 73 [2018-10-02 12:22:32,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-02 12:22:32,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-02 12:22:32,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:32,939 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states. [2018-10-02 12:22:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:33,423 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-02 12:22:33,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-02 12:22:33,424 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73 [2018-10-02 12:22:33,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:33,425 INFO L225 Difference]: With dead ends: 77 [2018-10-02 12:22:33,425 INFO L226 Difference]: Without dead ends: 75 [2018-10-02 12:22:33,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime [2018-10-02 12:22:33,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-02 12:22:33,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-02 12:22:33,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-02 12:22:33,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-02 12:22:33,428 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 73 [2018-10-02 12:22:33,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:33,429 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-02 12:22:33,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-02 12:22:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-02 12:22:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-02 12:22:33,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:33,430 INFO L375 BasicCegarLoop]: trace histogram [71, 1, 1, 1] [2018-10-02 12:22:33,430 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:33,430 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:33,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1650779834, now seen corresponding path program 71 times [2018-10-02 12:22:33,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:33,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:33,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:33,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:33,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:35,228 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:35,228 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 [2018-10-02 12:22:35,236 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:35,293 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2018-10-02 12:22:35,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:35,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:35,644 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:35,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 74 [2018-10-02 12:22:35,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-02 12:22:35,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-02 12:22:35,645 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:35,645 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 75 states. [2018-10-02 12:22:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:36,011 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-10-02 12:22:36,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-02 12:22:36,011 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 74 [2018-10-02 12:22:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:36,012 INFO L225 Difference]: With dead ends: 78 [2018-10-02 12:22:36,012 INFO L226 Difference]: Without dead ends: 76 [2018-10-02 12:22:36,013 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time 1.4s impTime [2018-10-02 12:22:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-10-02 12:22:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-10-02 12:22:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-10-02 12:22:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-10-02 12:22:36,017 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 74 [2018-10-02 12:22:36,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:36,017 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-10-02 12:22:36,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-02 12:22:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-10-02 12:22:36,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-02 12:22:36,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:36,018 INFO L375 BasicCegarLoop]: trace histogram [72, 1, 1, 1] [2018-10-02 12:22:36,018 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:36,018 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:36,019 INFO L82 PathProgramCache]: Analyzing trace with hash 365428832, now seen corresponding path program 72 times [2018-10-02 12:22:36,019 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:36,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:36,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:36,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:36,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:38,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:38,233 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 [2018-10-02 12:22:38,240 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:38,301 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-02 12:22:38,301 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:38,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:38,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:38,494 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:38,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 75 [2018-10-02 12:22:38,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-02 12:22:38,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-02 12:22:38,495 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:38,496 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states. [2018-10-02 12:22:38,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:38,908 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-10-02 12:22:38,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-02 12:22:38,909 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75 [2018-10-02 12:22:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:38,910 INFO L225 Difference]: With dead ends: 79 [2018-10-02 12:22:38,910 INFO L226 Difference]: Without dead ends: 77 [2018-10-02 12:22:38,910 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 1.9s impTime [2018-10-02 12:22:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-10-02 12:22:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-10-02 12:22:38,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-10-02 12:22:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2018-10-02 12:22:38,913 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 75 [2018-10-02 12:22:38,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:38,913 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2018-10-02 12:22:38,913 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-02 12:22:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2018-10-02 12:22:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-10-02 12:22:38,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:38,914 INFO L375 BasicCegarLoop]: trace histogram [73, 1, 1, 1] [2018-10-02 12:22:38,914 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:38,914 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:38,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1556611962, now seen corresponding path program 73 times [2018-10-02 12:22:38,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:38,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:38,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:38,915 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:38,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:41,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:41,204 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 [2018-10-02 12:22:41,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:41,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:41,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:41,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:41,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 76 [2018-10-02 12:22:41,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-02 12:22:41,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-02 12:22:41,441 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:41,441 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 77 states. [2018-10-02 12:22:41,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:41,926 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2018-10-02 12:22:41,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-02 12:22:41,927 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 76 [2018-10-02 12:22:41,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:41,927 INFO L225 Difference]: With dead ends: 80 [2018-10-02 12:22:41,928 INFO L226 Difference]: Without dead ends: 78 [2018-10-02 12:22:41,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime [2018-10-02 12:22:41,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-10-02 12:22:41,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-10-02 12:22:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-10-02 12:22:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-10-02 12:22:41,931 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 76 [2018-10-02 12:22:41,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:41,932 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-10-02 12:22:41,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-02 12:22:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-10-02 12:22:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-10-02 12:22:41,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:41,932 INFO L375 BasicCegarLoop]: trace histogram [74, 1, 1, 1] [2018-10-02 12:22:41,933 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:41,933 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:41,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1010334432, now seen corresponding path program 74 times [2018-10-02 12:22:41,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:41,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:41,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:41,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:22:41,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:44,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:44,460 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 [2018-10-02 12:22:44,467 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:22:44,510 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:22:44,511 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:44,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:44,715 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:44,715 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 77 [2018-10-02 12:22:44,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-02 12:22:44,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-02 12:22:44,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:44,716 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states. [2018-10-02 12:22:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:45,213 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-02 12:22:45,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-02 12:22:45,213 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77 [2018-10-02 12:22:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:45,214 INFO L225 Difference]: With dead ends: 81 [2018-10-02 12:22:45,214 INFO L226 Difference]: Without dead ends: 79 [2018-10-02 12:22:45,214 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime [2018-10-02 12:22:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-02 12:22:45,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-02 12:22:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-02 12:22:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-02 12:22:45,217 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 77 [2018-10-02 12:22:45,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:45,217 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-02 12:22:45,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-02 12:22:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-02 12:22:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-02 12:22:45,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:45,218 INFO L375 BasicCegarLoop]: trace histogram [75, 1, 1, 1] [2018-10-02 12:22:45,218 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:45,218 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1255600186, now seen corresponding path program 75 times [2018-10-02 12:22:45,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:45,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:45,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:45,219 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:45,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:47,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:47,715 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 [2018-10-02 12:22:47,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:22:47,789 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2018-10-02 12:22:47,789 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:47,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:47,998 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:47,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 78 [2018-10-02 12:22:47,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-02 12:22:47,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-02 12:22:47,999 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:47,999 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 79 states. [2018-10-02 12:22:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:48,489 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-10-02 12:22:48,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-02 12:22:48,489 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 78 [2018-10-02 12:22:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:48,490 INFO L225 Difference]: With dead ends: 82 [2018-10-02 12:22:48,490 INFO L226 Difference]: Without dead ends: 80 [2018-10-02 12:22:48,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.2s impTime [2018-10-02 12:22:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-10-02 12:22:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-10-02 12:22:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-02 12:22:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-10-02 12:22:48,494 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 78 [2018-10-02 12:22:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:48,494 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-10-02 12:22:48,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-02 12:22:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-10-02 12:22:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-02 12:22:48,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:48,495 INFO L375 BasicCegarLoop]: trace histogram [76, 1, 1, 1] [2018-10-02 12:22:48,495 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:48,495 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:48,495 INFO L82 PathProgramCache]: Analyzing trace with hash -268903968, now seen corresponding path program 76 times [2018-10-02 12:22:48,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:48,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:48,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:48,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:48,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:51,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:51,107 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 [2018-10-02 12:22:51,114 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:22:51,159 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:22:51,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:51,163 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 0 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:51,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:51,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 79 [2018-10-02 12:22:51,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-02 12:22:51,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-02 12:22:51,345 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:51,345 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states. [2018-10-02 12:22:52,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:52,765 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-10-02 12:22:52,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-02 12:22:52,772 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79 [2018-10-02 12:22:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:52,772 INFO L225 Difference]: With dead ends: 83 [2018-10-02 12:22:52,772 INFO L226 Difference]: Without dead ends: 81 [2018-10-02 12:22:52,773 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.4s impTime [2018-10-02 12:22:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-10-02 12:22:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-10-02 12:22:52,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-10-02 12:22:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-10-02 12:22:52,775 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 79 [2018-10-02 12:22:52,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:52,775 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-10-02 12:22:52,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-02 12:22:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-10-02 12:22:52,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-02 12:22:52,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:52,776 INFO L375 BasicCegarLoop]: trace histogram [77, 1, 1, 1] [2018-10-02 12:22:52,776 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:52,777 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:52,777 INFO L82 PathProgramCache]: Analyzing trace with hash 253907718, now seen corresponding path program 77 times [2018-10-02 12:22:52,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:52,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:52,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:52,778 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:52,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:55,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:55,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:55,096 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 [2018-10-02 12:22:55,103 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:22:55,169 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2018-10-02 12:22:55,170 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:55,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:55,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:55,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 80 [2018-10-02 12:22:55,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-02 12:22:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-02 12:22:55,383 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:55,383 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 81 states. [2018-10-02 12:22:55,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:55,719 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2018-10-02 12:22:55,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-02 12:22:55,720 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 80 [2018-10-02 12:22:55,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:55,721 INFO L225 Difference]: With dead ends: 84 [2018-10-02 12:22:55,721 INFO L226 Difference]: Without dead ends: 82 [2018-10-02 12:22:55,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time 2.1s impTime [2018-10-02 12:22:55,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-10-02 12:22:55,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-10-02 12:22:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-02 12:22:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2018-10-02 12:22:55,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 80 [2018-10-02 12:22:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:55,724 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2018-10-02 12:22:55,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-02 12:22:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2018-10-02 12:22:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-10-02 12:22:55,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:55,725 INFO L375 BasicCegarLoop]: trace histogram [78, 1, 1, 1] [2018-10-02 12:22:55,725 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:55,725 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:55,726 INFO L82 PathProgramCache]: Analyzing trace with hash -718799200, now seen corresponding path program 78 times [2018-10-02 12:22:55,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:55,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:55,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:55,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:55,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:22:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:57,505 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:22:57,505 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 [2018-10-02 12:22:57,514 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:22:57,582 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2018-10-02 12:22:57,582 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:22:57,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:22:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 0 proven. 3081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:22:57,812 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:22:57,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 81 [2018-10-02 12:22:57,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-02 12:22:57,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-02 12:22:57,813 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:22:57,813 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states. [2018-10-02 12:22:58,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:22:58,218 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-02 12:22:58,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-02 12:22:58,218 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81 [2018-10-02 12:22:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:22:58,219 INFO L225 Difference]: With dead ends: 85 [2018-10-02 12:22:58,219 INFO L226 Difference]: Without dead ends: 83 [2018-10-02 12:22:58,220 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time 1.5s impTime [2018-10-02 12:22:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-02 12:22:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-02 12:22:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-02 12:22:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-02 12:22:58,223 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 81 [2018-10-02 12:22:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:22:58,223 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-02 12:22:58,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-02 12:22:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-02 12:22:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-02 12:22:58,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:22:58,224 INFO L375 BasicCegarLoop]: trace histogram [79, 1, 1, 1] [2018-10-02 12:22:58,224 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:22:58,224 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:22:58,225 INFO L82 PathProgramCache]: Analyzing trace with hash -807942586, now seen corresponding path program 79 times [2018-10-02 12:22:58,225 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:22:58,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:22:58,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:58,225 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:22:58,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:22:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:01,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:01,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:01,903 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:23:01,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:01,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:02,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:02,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 82 [2018-10-02 12:23:02,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-02 12:23:02,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-02 12:23:02,173 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:02,173 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 83 states. [2018-10-02 12:23:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:02,714 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-10-02 12:23:02,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-02 12:23:02,715 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 82 [2018-10-02 12:23:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:02,716 INFO L225 Difference]: With dead ends: 86 [2018-10-02 12:23:02,716 INFO L226 Difference]: Without dead ends: 84 [2018-10-02 12:23:02,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.7s Time 3.3s impTime [2018-10-02 12:23:02,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-10-02 12:23:02,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-10-02 12:23:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-10-02 12:23:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-10-02 12:23:02,718 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 82 [2018-10-02 12:23:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:02,718 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-10-02 12:23:02,718 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-02 12:23:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-10-02 12:23:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-02 12:23:02,719 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:02,719 INFO L375 BasicCegarLoop]: trace histogram [80, 1, 1, 1] [2018-10-02 12:23:02,719 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:02,719 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:02,719 INFO L82 PathProgramCache]: Analyzing trace with hash 723579744, now seen corresponding path program 80 times [2018-10-02 12:23:02,719 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:02,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:02,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:02,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:02,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:02,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:05,143 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:05,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:23:05,151 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:05,199 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:05,199 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:05,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:06,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:06,226 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:06,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 83 [2018-10-02 12:23:06,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-02 12:23:06,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-02 12:23:06,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:06,227 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states. [2018-10-02 12:23:06,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:06,566 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-10-02 12:23:06,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-02 12:23:06,567 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83 [2018-10-02 12:23:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:06,568 INFO L225 Difference]: With dead ends: 87 [2018-10-02 12:23:06,568 INFO L226 Difference]: Without dead ends: 85 [2018-10-02 12:23:06,568 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 2.2s impTime [2018-10-02 12:23:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-10-02 12:23:06,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-10-02 12:23:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-10-02 12:23:06,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-10-02 12:23:06,571 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 83 [2018-10-02 12:23:06,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:06,571 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-10-02 12:23:06,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-02 12:23:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-10-02 12:23:06,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-02 12:23:06,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:06,571 INFO L375 BasicCegarLoop]: trace histogram [81, 1, 1, 1] [2018-10-02 12:23:06,572 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:06,572 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:06,572 INFO L82 PathProgramCache]: Analyzing trace with hash 956131718, now seen corresponding path program 81 times [2018-10-02 12:23:06,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:06,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:06,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:06,573 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:06,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:09,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:09,633 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 [2018-10-02 12:23:09,641 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:09,715 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2018-10-02 12:23:09,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:09,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:09,920 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:09,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 84 [2018-10-02 12:23:09,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-02 12:23:09,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-02 12:23:09,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:09,921 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 85 states. [2018-10-02 12:23:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:10,426 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-10-02 12:23:10,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-02 12:23:10,427 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 84 [2018-10-02 12:23:10,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:10,428 INFO L225 Difference]: With dead ends: 88 [2018-10-02 12:23:10,428 INFO L226 Difference]: Without dead ends: 86 [2018-10-02 12:23:10,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.7s impTime [2018-10-02 12:23:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-10-02 12:23:10,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2018-10-02 12:23:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-10-02 12:23:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-10-02 12:23:10,431 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 84 [2018-10-02 12:23:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:10,431 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-10-02 12:23:10,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-02 12:23:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-10-02 12:23:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-02 12:23:10,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:10,432 INFO L375 BasicCegarLoop]: trace histogram [82, 1, 1, 1] [2018-10-02 12:23:10,432 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:10,432 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash -424691680, now seen corresponding path program 82 times [2018-10-02 12:23:10,433 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:10,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:10,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:10,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:10,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:10,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:12,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:12,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:23:12,824 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:23:12,875 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:23:12,875 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:12,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 0 proven. 3403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:13,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:13,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 85 [2018-10-02 12:23:13,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-02 12:23:13,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-02 12:23:13,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:13,164 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states. [2018-10-02 12:23:13,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:13,527 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-02 12:23:13,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-02 12:23:13,527 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85 [2018-10-02 12:23:13,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:13,528 INFO L225 Difference]: With dead ends: 89 [2018-10-02 12:23:13,528 INFO L226 Difference]: Without dead ends: 87 [2018-10-02 12:23:13,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time 2.1s impTime [2018-10-02 12:23:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-02 12:23:13,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-02 12:23:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-02 12:23:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-02 12:23:13,531 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 85 [2018-10-02 12:23:13,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:13,531 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-02 12:23:13,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-02 12:23:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-02 12:23:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-02 12:23:13,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:13,532 INFO L375 BasicCegarLoop]: trace histogram [83, 1, 1, 1] [2018-10-02 12:23:13,532 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:13,532 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:13,532 INFO L82 PathProgramCache]: Analyzing trace with hash -280544058, now seen corresponding path program 83 times [2018-10-02 12:23:13,533 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:13,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:13,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:13,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:13,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:17,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:17,075 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 [2018-10-02 12:23:17,082 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:23:17,155 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2018-10-02 12:23:17,156 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:17,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:17,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:17,353 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:17,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 86 [2018-10-02 12:23:17,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-02 12:23:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-02 12:23:17,354 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:17,354 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 87 states. [2018-10-02 12:23:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:17,947 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2018-10-02 12:23:17,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-02 12:23:17,947 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 86 [2018-10-02 12:23:17,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:17,948 INFO L225 Difference]: With dead ends: 90 [2018-10-02 12:23:17,948 INFO L226 Difference]: Without dead ends: 88 [2018-10-02 12:23:17,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6s Time 3.2s impTime [2018-10-02 12:23:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-02 12:23:17,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-10-02 12:23:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-10-02 12:23:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2018-10-02 12:23:17,952 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 86 [2018-10-02 12:23:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:17,952 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2018-10-02 12:23:17,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-02 12:23:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2018-10-02 12:23:17,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-02 12:23:17,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:17,953 INFO L375 BasicCegarLoop]: trace histogram [84, 1, 1, 1] [2018-10-02 12:23:17,953 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:17,953 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:17,953 INFO L82 PathProgramCache]: Analyzing trace with hash -106935072, now seen corresponding path program 84 times [2018-10-02 12:23:17,953 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:17,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:17,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:17,954 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:17,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:20,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:20,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:20,094 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 [2018-10-02 12:23:20,105 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:23:20,178 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-02 12:23:20,178 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:20,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 3570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:20,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:20,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 87 [2018-10-02 12:23:20,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-02 12:23:20,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-02 12:23:20,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:20,382 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states. [2018-10-02 12:23:20,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:20,866 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-10-02 12:23:20,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-02 12:23:20,867 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87 [2018-10-02 12:23:20,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:20,867 INFO L225 Difference]: With dead ends: 91 [2018-10-02 12:23:20,867 INFO L226 Difference]: Without dead ends: 89 [2018-10-02 12:23:20,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time 1.9s impTime [2018-10-02 12:23:20,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-10-02 12:23:20,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-10-02 12:23:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-02 12:23:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-10-02 12:23:20,870 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 87 [2018-10-02 12:23:20,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:20,870 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-10-02 12:23:20,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-02 12:23:20,870 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-10-02 12:23:20,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-02 12:23:20,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:20,871 INFO L375 BasicCegarLoop]: trace histogram [85, 1, 1, 1] [2018-10-02 12:23:20,871 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:20,871 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:20,872 INFO L82 PathProgramCache]: Analyzing trace with hash 979976198, now seen corresponding path program 85 times [2018-10-02 12:23:20,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:20,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:20,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:20,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:20,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:22,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:22,973 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 [2018-10-02 12:23:22,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:23,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:23,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:23,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 88 [2018-10-02 12:23:23,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-02 12:23:23,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-02 12:23:23,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:23,230 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 89 states. [2018-10-02 12:23:23,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:23,634 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2018-10-02 12:23:23,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-02 12:23:23,635 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 88 [2018-10-02 12:23:23,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:23,636 INFO L225 Difference]: With dead ends: 92 [2018-10-02 12:23:23,636 INFO L226 Difference]: Without dead ends: 90 [2018-10-02 12:23:23,636 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime [2018-10-02 12:23:23,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-02 12:23:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-10-02 12:23:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-10-02 12:23:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-10-02 12:23:23,640 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 88 [2018-10-02 12:23:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:23,640 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-10-02 12:23:23,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-02 12:23:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-10-02 12:23:23,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-02 12:23:23,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:23,641 INFO L375 BasicCegarLoop]: trace histogram [86, 1, 1, 1] [2018-10-02 12:23:23,641 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:23,642 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:23,642 INFO L82 PathProgramCache]: Analyzing trace with hash 314487200, now seen corresponding path program 86 times [2018-10-02 12:23:23,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:23,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:23,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:23,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:23,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:26,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:26,230 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 [2018-10-02 12:23:26,237 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:26,285 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:26,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:26,288 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 0 proven. 3741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:26,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:26,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 89 [2018-10-02 12:23:26,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-02 12:23:26,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-02 12:23:26,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:26,500 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states. [2018-10-02 12:23:26,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:26,884 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-02 12:23:26,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-02 12:23:26,885 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89 [2018-10-02 12:23:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:26,886 INFO L225 Difference]: With dead ends: 93 [2018-10-02 12:23:26,886 INFO L226 Difference]: Without dead ends: 91 [2018-10-02 12:23:26,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime [2018-10-02 12:23:26,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-02 12:23:26,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-02 12:23:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-02 12:23:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-02 12:23:26,888 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 89 [2018-10-02 12:23:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:26,888 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-02 12:23:26,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-02 12:23:26,888 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-02 12:23:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-02 12:23:26,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:26,889 INFO L375 BasicCegarLoop]: trace histogram [87, 1, 1, 1] [2018-10-02 12:23:26,889 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:26,889 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:26,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1159164742, now seen corresponding path program 87 times [2018-10-02 12:23:26,889 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:26,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:26,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:26,890 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:26,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:29,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:29,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:29,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:23:29,816 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:29,903 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2018-10-02 12:23:29,903 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:29,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:30,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:30,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:30,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 90 [2018-10-02 12:23:30,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-02 12:23:30,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-02 12:23:30,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:30,131 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 91 states. [2018-10-02 12:23:30,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:30,539 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-10-02 12:23:30,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-02 12:23:30,539 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 90 [2018-10-02 12:23:30,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:30,540 INFO L225 Difference]: With dead ends: 94 [2018-10-02 12:23:30,540 INFO L226 Difference]: Without dead ends: 92 [2018-10-02 12:23:30,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s Time 2.6s impTime [2018-10-02 12:23:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-10-02 12:23:30,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-10-02 12:23:30,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-10-02 12:23:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2018-10-02 12:23:30,542 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 90 [2018-10-02 12:23:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:30,542 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2018-10-02 12:23:30,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-02 12:23:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2018-10-02 12:23:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-02 12:23:30,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:30,543 INFO L375 BasicCegarLoop]: trace histogram [88, 1, 1, 1] [2018-10-02 12:23:30,543 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:30,544 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1574364768, now seen corresponding path program 88 times [2018-10-02 12:23:30,544 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:30,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:30,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:30,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:30,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:33,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:33,416 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 [2018-10-02 12:23:33,423 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:23:33,477 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:23:33,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:33,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 0 proven. 3916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:33,696 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:33,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 91 [2018-10-02 12:23:33,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-02 12:23:33,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-02 12:23:33,697 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:33,697 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states. [2018-10-02 12:23:34,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:34,091 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions. [2018-10-02 12:23:34,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-02 12:23:34,091 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91 [2018-10-02 12:23:34,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:34,092 INFO L225 Difference]: With dead ends: 95 [2018-10-02 12:23:34,092 INFO L226 Difference]: Without dead ends: 93 [2018-10-02 12:23:34,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime [2018-10-02 12:23:34,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-02 12:23:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-10-02 12:23:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-02 12:23:34,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-10-02 12:23:34,096 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 91 [2018-10-02 12:23:34,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:34,096 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-10-02 12:23:34,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-02 12:23:34,096 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-10-02 12:23:34,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-02 12:23:34,097 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:34,097 INFO L375 BasicCegarLoop]: trace histogram [89, 1, 1, 1] [2018-10-02 12:23:34,097 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:34,097 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:34,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1560663686, now seen corresponding path program 89 times [2018-10-02 12:23:34,097 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:34,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:34,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:34,098 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:34,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:36,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:36,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:36,600 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 [2018-10-02 12:23:36,608 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:23:36,714 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2018-10-02 12:23:36,715 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:36,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:36,996 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:36,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 92 [2018-10-02 12:23:36,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-02 12:23:36,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-02 12:23:36,997 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:36,997 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 93 states. [2018-10-02 12:23:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:37,407 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-10-02 12:23:37,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-02 12:23:37,408 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 92 [2018-10-02 12:23:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:37,409 INFO L225 Difference]: With dead ends: 96 [2018-10-02 12:23:37,409 INFO L226 Difference]: Without dead ends: 94 [2018-10-02 12:23:37,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.3s impTime [2018-10-02 12:23:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-10-02 12:23:37,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2018-10-02 12:23:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-02 12:23:37,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-10-02 12:23:37,411 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 92 [2018-10-02 12:23:37,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:37,411 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-10-02 12:23:37,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-02 12:23:37,411 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-10-02 12:23:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-02 12:23:37,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:37,412 INFO L375 BasicCegarLoop]: trace histogram [90, 1, 1, 1] [2018-10-02 12:23:37,412 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:37,412 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:37,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1135930144, now seen corresponding path program 90 times [2018-10-02 12:23:37,412 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:37,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:37,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:37,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:37,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:39,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:39,511 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 [2018-10-02 12:23:39,520 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:23:39,604 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2018-10-02 12:23:39,605 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:39,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 0 proven. 4095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:39,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:39,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 93 [2018-10-02 12:23:39,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-02 12:23:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-02 12:23:39,827 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:39,827 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states. [2018-10-02 12:23:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:40,373 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-02 12:23:40,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-02 12:23:40,374 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93 [2018-10-02 12:23:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:40,374 INFO L225 Difference]: With dead ends: 97 [2018-10-02 12:23:40,375 INFO L226 Difference]: Without dead ends: 95 [2018-10-02 12:23:40,375 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time 1.8s impTime [2018-10-02 12:23:40,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-02 12:23:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-02 12:23:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-02 12:23:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-02 12:23:40,379 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 93 [2018-10-02 12:23:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:40,379 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-02 12:23:40,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-02 12:23:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-02 12:23:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-02 12:23:40,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:40,380 INFO L375 BasicCegarLoop]: trace histogram [91, 1, 1, 1] [2018-10-02 12:23:40,380 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:40,380 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:40,380 INFO L82 PathProgramCache]: Analyzing trace with hash 854092230, now seen corresponding path program 91 times [2018-10-02 12:23:40,380 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:40,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:40,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:40,381 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:40,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:43,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:43,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:43,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:23:43,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:43,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:43,922 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:43,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 94 [2018-10-02 12:23:43,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-02 12:23:43,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-02 12:23:43,923 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:43,924 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 95 states. [2018-10-02 12:23:44,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:44,512 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-10-02 12:23:44,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-02 12:23:44,512 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 94 [2018-10-02 12:23:44,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:44,513 INFO L225 Difference]: With dead ends: 98 [2018-10-02 12:23:44,513 INFO L226 Difference]: Without dead ends: 96 [2018-10-02 12:23:44,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s Time 3.0s impTime [2018-10-02 12:23:44,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-10-02 12:23:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-10-02 12:23:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-10-02 12:23:44,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-10-02 12:23:44,515 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 94 [2018-10-02 12:23:44,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:44,516 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-10-02 12:23:44,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-02 12:23:44,516 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-10-02 12:23:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-02 12:23:44,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:44,516 INFO L375 BasicCegarLoop]: trace histogram [92, 1, 1, 1] [2018-10-02 12:23:44,516 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:44,516 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:44,517 INFO L82 PathProgramCache]: Analyzing trace with hash 707051488, now seen corresponding path program 92 times [2018-10-02 12:23:44,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:44,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:44,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:44,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:23:44,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:48,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:48,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:48,460 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 [2018-10-02 12:23:48,467 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:23:48,520 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:23:48,520 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:48,523 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:48,746 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:48,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 95 [2018-10-02 12:23:48,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-02 12:23:48,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-02 12:23:48,748 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:48,748 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states. [2018-10-02 12:23:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:49,409 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-10-02 12:23:49,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-02 12:23:49,409 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95 [2018-10-02 12:23:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:49,410 INFO L225 Difference]: With dead ends: 99 [2018-10-02 12:23:49,410 INFO L226 Difference]: Without dead ends: 97 [2018-10-02 12:23:49,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0s Time 3.6s impTime [2018-10-02 12:23:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-10-02 12:23:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2018-10-02 12:23:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-10-02 12:23:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-10-02 12:23:49,413 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 95 [2018-10-02 12:23:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:49,413 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-10-02 12:23:49,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-02 12:23:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-10-02 12:23:49,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-10-02 12:23:49,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:49,414 INFO L375 BasicCegarLoop]: trace histogram [93, 1, 1, 1] [2018-10-02 12:23:49,414 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:49,414 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:49,414 INFO L82 PathProgramCache]: Analyzing trace with hash 443755782, now seen corresponding path program 93 times [2018-10-02 12:23:49,414 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:49,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:49,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:49,415 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:49,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:51,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:51,693 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 [2018-10-02 12:23:51,700 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:23:51,786 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2018-10-02 12:23:51,786 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:51,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:52,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:52,029 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:52,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 96 [2018-10-02 12:23:52,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-02 12:23:52,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-02 12:23:52,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:52,031 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 97 states. [2018-10-02 12:23:52,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:52,511 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-10-02 12:23:52,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-02 12:23:52,511 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 96 [2018-10-02 12:23:52,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:52,512 INFO L225 Difference]: With dead ends: 100 [2018-10-02 12:23:52,512 INFO L226 Difference]: Without dead ends: 98 [2018-10-02 12:23:52,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time 2.0s impTime [2018-10-02 12:23:52,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-10-02 12:23:52,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2018-10-02 12:23:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-10-02 12:23:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2018-10-02 12:23:52,516 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 96 [2018-10-02 12:23:52,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:52,516 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2018-10-02 12:23:52,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-02 12:23:52,516 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2018-10-02 12:23:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-02 12:23:52,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:52,516 INFO L375 BasicCegarLoop]: trace histogram [94, 1, 1, 1] [2018-10-02 12:23:52,517 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:52,517 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:52,517 INFO L82 PathProgramCache]: Analyzing trace with hash 871523488, now seen corresponding path program 94 times [2018-10-02 12:23:52,517 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:52,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:52,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:52,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:52,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:23:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:57,024 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:23:57,024 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 [2018-10-02 12:23:57,032 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:23:57,088 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:23:57,088 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:23:57,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:23:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:23:57,360 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:23:57,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 97 [2018-10-02 12:23:57,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-02 12:23:57,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-02 12:23:57,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:23:57,361 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states. [2018-10-02 12:23:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:23:58,022 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-02 12:23:58,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-02 12:23:58,022 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97 [2018-10-02 12:23:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:23:58,023 INFO L225 Difference]: With dead ends: 101 [2018-10-02 12:23:58,023 INFO L226 Difference]: Without dead ends: 99 [2018-10-02 12:23:58,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s Time 4.1s impTime [2018-10-02 12:23:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-02 12:23:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-02 12:23:58,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-02 12:23:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-02 12:23:58,025 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 97 [2018-10-02 12:23:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:23:58,025 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-02 12:23:58,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-02 12:23:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-02 12:23:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-02 12:23:58,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:23:58,026 INFO L375 BasicCegarLoop]: trace histogram [95, 1, 1, 1] [2018-10-02 12:23:58,026 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:23:58,026 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:23:58,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1247420486, now seen corresponding path program 95 times [2018-10-02 12:23:58,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:23:58,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:23:58,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:58,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:23:58,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:23:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:00,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:00,576 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 [2018-10-02 12:24:00,584 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:24:00,679 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2018-10-02 12:24:00,680 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:00,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:00,942 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:00,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 98 [2018-10-02 12:24:00,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-02 12:24:00,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-02 12:24:00,943 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:00,943 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 99 states. [2018-10-02 12:24:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:01,449 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2018-10-02 12:24:01,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-02 12:24:01,450 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 98 [2018-10-02 12:24:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:01,450 INFO L225 Difference]: With dead ends: 102 [2018-10-02 12:24:01,450 INFO L226 Difference]: Without dead ends: 100 [2018-10-02 12:24:01,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time 2.2s impTime [2018-10-02 12:24:01,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-02 12:24:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-02 12:24:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-02 12:24:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-10-02 12:24:01,454 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 98 [2018-10-02 12:24:01,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:01,454 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-10-02 12:24:01,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-02 12:24:01,454 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-10-02 12:24:01,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-02 12:24:01,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:01,455 INFO L375 BasicCegarLoop]: trace histogram [96, 1, 1, 1] [2018-10-02 12:24:01,455 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:01,455 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash 15325536, now seen corresponding path program 96 times [2018-10-02 12:24:01,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:01,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:01,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:01,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:01,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:04,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:04,882 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 [2018-10-02 12:24:04,891 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:24:04,980 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-02 12:24:04,980 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:04,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 0 proven. 4656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:05,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:05,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 99 [2018-10-02 12:24:05,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-02 12:24:05,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-02 12:24:05,211 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:05,211 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states. [2018-10-02 12:24:05,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:05,667 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-10-02 12:24:05,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-02 12:24:05,668 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99 [2018-10-02 12:24:05,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:05,668 INFO L225 Difference]: With dead ends: 103 [2018-10-02 12:24:05,669 INFO L226 Difference]: Without dead ends: 101 [2018-10-02 12:24:05,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s Time 3.1s impTime [2018-10-02 12:24:05,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-02 12:24:05,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-02 12:24:05,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-02 12:24:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-10-02 12:24:05,671 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 99 [2018-10-02 12:24:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:05,671 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-10-02 12:24:05,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-02 12:24:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-10-02 12:24:05,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-02 12:24:05,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:05,672 INFO L375 BasicCegarLoop]: trace histogram [97, 1, 1, 1] [2018-10-02 12:24:05,672 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:05,672 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:05,672 INFO L82 PathProgramCache]: Analyzing trace with hash 475087750, now seen corresponding path program 97 times [2018-10-02 12:24:05,673 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:05,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:05,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:05,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:05,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:10,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:10,424 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 [2018-10-02 12:24:10,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:24:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:10,488 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:10,716 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:10,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 100 [2018-10-02 12:24:10,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-02 12:24:10,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-02 12:24:10,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:10,717 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 101 states. [2018-10-02 12:24:11,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:11,544 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2018-10-02 12:24:11,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-02 12:24:11,544 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 100 [2018-10-02 12:24:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:11,545 INFO L225 Difference]: With dead ends: 104 [2018-10-02 12:24:11,545 INFO L226 Difference]: Without dead ends: 102 [2018-10-02 12:24:11,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s Time 4.4s impTime [2018-10-02 12:24:11,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-10-02 12:24:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-10-02 12:24:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-10-02 12:24:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-10-02 12:24:11,548 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 100 [2018-10-02 12:24:11,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:11,548 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-10-02 12:24:11,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-02 12:24:11,548 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-10-02 12:24:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-02 12:24:11,549 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:11,549 INFO L375 BasicCegarLoop]: trace histogram [98, 1, 1, 1] [2018-10-02 12:24:11,549 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:11,549 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash 1842814496, now seen corresponding path program 98 times [2018-10-02 12:24:11,549 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:11,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:11,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:11,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:24:11,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:14,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:14,885 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:24:14,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:24:14,948 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:24:14,948 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:14,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:15,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:15,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 101 [2018-10-02 12:24:15,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-02 12:24:15,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-02 12:24:15,207 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:15,207 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states. [2018-10-02 12:24:15,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:15,902 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-02 12:24:15,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-02 12:24:15,902 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101 [2018-10-02 12:24:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:15,903 INFO L225 Difference]: With dead ends: 105 [2018-10-02 12:24:15,903 INFO L226 Difference]: Without dead ends: 103 [2018-10-02 12:24:15,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s Time 3.0s impTime [2018-10-02 12:24:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-02 12:24:15,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-02 12:24:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-02 12:24:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-02 12:24:15,906 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 101 [2018-10-02 12:24:15,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:15,906 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-02 12:24:15,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-02 12:24:15,906 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-02 12:24:15,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-02 12:24:15,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:15,907 INFO L375 BasicCegarLoop]: trace histogram [99, 1, 1, 1] [2018-10-02 12:24:15,907 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:15,907 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1292670662, now seen corresponding path program 99 times [2018-10-02 12:24:15,907 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:15,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:15,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:15,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:15,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:18,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:18,806 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 [2018-10-02 12:24:18,813 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:24:18,910 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2018-10-02 12:24:18,910 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:18,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:19,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:19,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 102 [2018-10-02 12:24:19,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-02 12:24:19,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-02 12:24:19,144 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:19,144 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 103 states. [2018-10-02 12:24:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:19,807 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-10-02 12:24:19,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-02 12:24:19,807 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 102 [2018-10-02 12:24:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:19,809 INFO L225 Difference]: With dead ends: 106 [2018-10-02 12:24:19,809 INFO L226 Difference]: Without dead ends: 104 [2018-10-02 12:24:19,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime [2018-10-02 12:24:19,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-10-02 12:24:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2018-10-02 12:24:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-02 12:24:19,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-10-02 12:24:19,813 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 102 [2018-10-02 12:24:19,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:19,813 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-10-02 12:24:19,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-02 12:24:19,813 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-10-02 12:24:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-02 12:24:19,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:19,814 INFO L375 BasicCegarLoop]: trace histogram [100, 1, 1, 1] [2018-10-02 12:24:19,814 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:19,814 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:19,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1418080992, now seen corresponding path program 100 times [2018-10-02 12:24:19,815 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:19,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:19,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:19,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:19,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:22,714 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:22,714 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 [2018-10-02 12:24:22,721 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-02 12:24:22,783 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-02 12:24:22,783 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:22,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 0 proven. 5050 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:23,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:23,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 103 [2018-10-02 12:24:23,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-02 12:24:23,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-02 12:24:23,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:23,041 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states. [2018-10-02 12:24:23,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:23,712 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2018-10-02 12:24:23,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-02 12:24:23,712 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103 [2018-10-02 12:24:23,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:23,713 INFO L225 Difference]: With dead ends: 107 [2018-10-02 12:24:23,713 INFO L226 Difference]: Without dead ends: 105 [2018-10-02 12:24:23,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.6s impTime [2018-10-02 12:24:23,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-02 12:24:23,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-02 12:24:23,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-02 12:24:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-10-02 12:24:23,717 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 103 [2018-10-02 12:24:23,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:23,717 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-10-02 12:24:23,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-02 12:24:23,717 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-10-02 12:24:23,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-02 12:24:23,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:23,718 INFO L375 BasicCegarLoop]: trace histogram [101, 1, 1, 1] [2018-10-02 12:24:23,718 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:23,718 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:23,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1010833926, now seen corresponding path program 101 times [2018-10-02 12:24:23,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:23,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:23,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:23,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:23,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:26,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:26,808 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 [2018-10-02 12:24:26,815 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-02 12:24:26,924 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2018-10-02 12:24:26,924 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:26,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:27,168 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:27,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 104 [2018-10-02 12:24:27,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-02 12:24:27,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-02 12:24:27,169 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:27,169 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 105 states. [2018-10-02 12:24:27,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:27,847 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-10-02 12:24:27,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-02 12:24:27,848 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 104 [2018-10-02 12:24:27,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:27,849 INFO L225 Difference]: With dead ends: 108 [2018-10-02 12:24:27,849 INFO L226 Difference]: Without dead ends: 106 [2018-10-02 12:24:27,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1s Time 2.7s impTime [2018-10-02 12:24:27,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-10-02 12:24:27,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2018-10-02 12:24:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-10-02 12:24:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-10-02 12:24:27,852 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 104 [2018-10-02 12:24:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:27,852 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-10-02 12:24:27,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-02 12:24:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-10-02 12:24:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-02 12:24:27,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:27,853 INFO L375 BasicCegarLoop]: trace histogram [102, 1, 1, 1] [2018-10-02 12:24:27,854 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:27,854 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1271076768, now seen corresponding path program 102 times [2018-10-02 12:24:27,854 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:27,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:27,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:27,855 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:27,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:31,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:31,526 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-02 12:24:31,532 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-02 12:24:31,625 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2018-10-02 12:24:31,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:31,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 0 proven. 5253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:32,024 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:32,024 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 105 [2018-10-02 12:24:32,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-02 12:24:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-02 12:24:32,026 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:32,026 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states. [2018-10-02 12:24:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:32,757 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-02 12:24:32,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-02 12:24:32,761 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105 [2018-10-02 12:24:32,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:32,762 INFO L225 Difference]: With dead ends: 109 [2018-10-02 12:24:32,762 INFO L226 Difference]: Without dead ends: 107 [2018-10-02 12:24:32,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s Time 3.3s impTime [2018-10-02 12:24:32,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-02 12:24:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-02 12:24:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-02 12:24:32,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-02 12:24:32,765 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 105 [2018-10-02 12:24:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:32,765 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-02 12:24:32,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-02 12:24:32,766 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-02 12:24:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-02 12:24:32,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:32,766 INFO L375 BasicCegarLoop]: trace histogram [103, 1, 1, 1] [2018-10-02 12:24:32,766 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:32,767 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:32,767 INFO L82 PathProgramCache]: Analyzing trace with hash 748670278, now seen corresponding path program 103 times [2018-10-02 12:24:32,767 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:32,767 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:32,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:32,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:32,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:37,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:37,940 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 [2018-10-02 12:24:37,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:24:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:38,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:38,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:38,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 106 [2018-10-02 12:24:38,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-02 12:24:38,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-02 12:24:38,268 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:38,268 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 107 states. [2018-10-02 12:24:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:39,048 INFO L93 Difference]: Finished difference Result 110 states and 110 transitions. [2018-10-02 12:24:39,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-02 12:24:39,049 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 106 [2018-10-02 12:24:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:39,049 INFO L225 Difference]: With dead ends: 110 [2018-10-02 12:24:39,049 INFO L226 Difference]: Without dead ends: 108 [2018-10-02 12:24:39,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s Time 4.8s impTime [2018-10-02 12:24:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-10-02 12:24:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-10-02 12:24:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-10-02 12:24:39,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-10-02 12:24:39,052 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 106 [2018-10-02 12:24:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:39,052 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-10-02 12:24:39,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-02 12:24:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-10-02 12:24:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-02 12:24:39,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:39,053 INFO L375 BasicCegarLoop]: trace histogram [104, 1, 1, 1] [2018-10-02 12:24:39,053 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:39,054 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:39,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1733938272, now seen corresponding path program 104 times [2018-10-02 12:24:39,054 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:39,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:39,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-02 12:24:39,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:43,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:43,322 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 [2018-10-02 12:24:43,329 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-02 12:24:43,385 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-02 12:24:43,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:43,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 0 proven. 5460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:43,738 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:43,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 107 [2018-10-02 12:24:43,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-02 12:24:43,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-02 12:24:43,739 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:43,739 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states. [2018-10-02 12:24:44,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:44,239 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-10-02 12:24:44,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-02 12:24:44,239 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107 [2018-10-02 12:24:44,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:44,239 INFO L225 Difference]: With dead ends: 111 [2018-10-02 12:24:44,240 INFO L226 Difference]: Without dead ends: 109 [2018-10-02 12:24:44,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s Time 3.9s impTime [2018-10-02 12:24:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-10-02 12:24:44,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-10-02 12:24:44,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-10-02 12:24:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-10-02 12:24:44,242 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 107 [2018-10-02 12:24:44,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:44,243 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-10-02 12:24:44,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-02 12:24:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-10-02 12:24:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-02 12:24:44,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:44,243 INFO L375 BasicCegarLoop]: trace histogram [105, 1, 1, 1] [2018-10-02 12:24:44,244 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:44,244 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:44,244 INFO L82 PathProgramCache]: Analyzing trace with hash -2082492282, now seen corresponding path program 105 times [2018-10-02 12:24:44,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:44,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:44,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:44,244 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:44,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-02 12:24:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:47,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-02 12:24:47,112 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 [2018-10-02 12:24:47,121 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-02 12:24:47,229 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2018-10-02 12:24:47,229 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-02 12:24:47,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-02 12:24:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-02 12:24:47,483 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-02 12:24:47,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 108 [2018-10-02 12:24:47,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-02 12:24:47,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-02 12:24:47,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-02 12:24:47,484 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 109 states. [2018-10-02 12:24:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-02 12:24:48,060 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-10-02 12:24:48,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-02 12:24:48,061 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 108 [2018-10-02 12:24:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-02 12:24:48,061 INFO L225 Difference]: With dead ends: 112 [2018-10-02 12:24:48,061 INFO L226 Difference]: Without dead ends: 110 [2018-10-02 12:24:48,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s Time 2.5s impTime [2018-10-02 12:24:48,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-10-02 12:24:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2018-10-02 12:24:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-10-02 12:24:48,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-10-02 12:24:48,064 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 108 [2018-10-02 12:24:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-02 12:24:48,064 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-10-02 12:24:48,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-02 12:24:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-10-02 12:24:48,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-02 12:24:48,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-02 12:24:48,065 INFO L375 BasicCegarLoop]: trace histogram [106, 1, 1, 1] [2018-10-02 12:24:48,065 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-02 12:24:48,066 INFO L103 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-02 12:24:48,066 INFO L82 PathProgramCache]: Analyzing trace with hash -132755168, now seen corresponding path program 106 times [2018-10-02 12:24:48,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-02 12:24:48,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-02 12:24:48,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:48,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-02 12:24:48,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-02 12:24:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-02 12:24:50,394 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-02 12:24:50,398 WARN L205 ceAbstractionStarter]: Timeout [2018-10-02 12:24:50,399 INFO L202 PluginConnector]: Adding new model LuxembourgOctopus.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 12:24:50 BoogieIcfgContainer [2018-10-02 12:24:50,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-02 12:24:50,400 INFO L168 Benchmark]: Toolchain (without parser) took 239210.51 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -187.7 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 226.3 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2018-10-02 12:24:50,401 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.25 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. [2018-10-02 12:24:50,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.37 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. [2018-10-02 12:24:50,402 INFO L168 Benchmark]: Boogie Preprocessor took 20.49 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. [2018-10-02 12:24:50,403 INFO L168 Benchmark]: RCFGBuilder took 282.13 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. [2018-10-02 12:24:50,404 INFO L168 Benchmark]: TraceAbstraction took 238861.28 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -187.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 205.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2018-10-02 12:24:50,407 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 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.37 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 20.49 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 282.13 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 238861.28 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -187.7 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 205.1 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 25). Cancelled while BasicCegarLoop was analyzing trace of length 110 with TraceHistMax 106, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 108 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 238.7s OverallTime, 107 OverallIterations, 106 TraceHistogramMax, 37.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 320 SDtfs, 2 SDslu, 3947 SDs, 0 SdLazy, 9768 SolverSat, 151 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11552 GetRequests, 5776 SyntacticMatches, 0 SemanticMatches, 5776 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 182.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=106, 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, 106 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 187.8s InterpolantComputationTime, 11763 NumberOfCodeBlocks, 11763 NumberOfCodeBlocksAsserted, 1659 NumberOfCheckSat, 11552 ConstructedInterpolants, 0 QuantifiedInterpolants, 4071558 SizeOfPredicates, 210 NumberOfNonLiveVariables, 23205 ConjunctsInSsa, 5775 ConjunctsInUnsatCore, 211 InterpolantComputations, 1 PerfectInterpolantSequences, 0/396970 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/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-02_12-24-50-417.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LuxembourgOctopus.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-02_12-24-50-417.csv Completed graceful shutdown