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/nonlinear/Mult1-Safe.bpl
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This is Ultimate 0.1.23-d19836b
[2018-09-26 21:59:25,444 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-09-26 21:59:25,447 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
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[2018-09-26 21:59:25,460 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-09-26 21:59:25,461 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-09-26 21:59:25,462 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-09-26 21:59:25,467 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values
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[2018-09-26 21:59:25,468 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values
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[2018-09-26 21:59:25,472 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values
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[2018-09-26 21:59:25,476 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-09-26 21:59:25,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-09-26 21:59:25,482 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-09-26 21:59:25,487 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-09-26 21:59:25,488 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-09-26 21:59:25,493 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-09-26 21:59:25,498 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-09-26 21:59:25,499 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-09-26 21:59:25,499 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-09-26 21:59:25,502 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-09-26 21:59:25,503 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-09-26 21:59:25,510 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values
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[2018-09-26 21:59:25,512 INFO L181 SettingsManager]: Finished resetting all preferences to default values...
[2018-09-26 21:59:25,512 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf
[2018-09-26 21:59:25,529 INFO L110 SettingsManager]: Loading preferences was successful
[2018-09-26 21:59:25,529 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-09-26 21:59:25,530 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-09-26 21:59:25,530 INFO L133 SettingsManager]: * to procedures, called more than once=true
[2018-09-26 21:59:25,531 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-09-26 21:59:25,531 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2018-09-26 21:59:25,531 INFO L133 SettingsManager]: * Use SBE=true
[2018-09-26 21:59:25,532 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-09-26 21:59:25,532 INFO L133 SettingsManager]: * sizeof long=4
[2018-09-26 21:59:25,532 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-09-26 21:59:25,532 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-09-26 21:59:25,532 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-09-26 21:59:25,533 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2018-09-26 21:59:25,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-09-26 21:59:25,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2018-09-26 21:59:25,533 INFO L133 SettingsManager]: * sizeof long double=12
[2018-09-26 21:59:25,533 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2018-09-26 21:59:25,534 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2018-09-26 21:59:25,534 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-09-26 21:59:25,534 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-09-26 21:59:25,534 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-09-26 21:59:25,534 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-09-26 21:59:25,534 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-26 21:59:25,535 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-09-26 21:59:25,535 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-09-26 21:59:25,535 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-09-26 21:59:25,535 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-09-26 21:59:25,536 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-09-26 21:59:25,536 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-09-26 21:59:25,536 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-09-26 21:59:25,536 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true
[2018-09-26 21:59:25,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-09-26 21:59:25,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-09-26 21:59:25,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-09-26 21:59:25,603 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2018-09-26 21:59:25,604 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized
[2018-09-26 21:59:25,605 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Mult1-Safe.bpl
[2018-09-26 21:59:25,605 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Mult1-Safe.bpl'
[2018-09-26 21:59:25,661 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-09-26 21:59:25,665 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-09-26 21:59:25,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-09-26 21:59:25,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-09-26 21:59:25,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2018-09-26 21:59:25,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,703 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,708 WARN L165 Inliner]: Program contained no entry procedure!
[2018-09-26 21:59:25,708 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start]
[2018-09-26 21:59:25,709 WARN L175 Inliner]: Fallback enabled. All procedures will be processed.
[2018-09-26 21:59:25,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-09-26 21:59:25,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-09-26 21:59:25,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-09-26 21:59:25,712 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-09-26 21:59:25,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
[2018-09-26 21:59:25,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-09-26 21:59:25,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-09-26 21:59:25,741 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-09-26 21:59:25,741 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-09-26 21:59:25,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-26 21:59:25,828 INFO L124 BoogieDeclarations]: Specification and implementation of procedure mult given in one single declaration
[2018-09-26 21:59:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure mult
[2018-09-26 21:59:25,828 INFO L138 BoogieDeclarations]: Found implementation of procedure mult
[2018-09-26 21:59:25,894 WARN L639 $ProcedureCfgBuilder]: Label in the middle of a codeblock.
[2018-09-26 21:59:26,032 INFO L343 CfgBuilder]: Using library mode
[2018-09-26 21:59:26,033 INFO L202 PluginConnector]: Adding new model Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:59:26 BoogieIcfgContainer
[2018-09-26 21:59:26,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-09-26 21:59:26,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-09-26 21:59:26,034 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-09-26 21:59:26,038 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-09-26 21:59:26,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:59:25" (1/2) ...
[2018-09-26 21:59:26,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cb56d6 and model type Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:59:26, skipping insertion in model container
[2018-09-26 21:59:26,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:59:26" (2/2) ...
[2018-09-26 21:59:26,041 INFO L112 eAbstractionObserver]: Analyzing ICFG Mult1-Safe.bpl
[2018-09-26 21:59:26,058 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-09-26 21:59:26,066 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-09-26 21:59:26,122 INFO L133 ementStrategyFactory]: Using default assertion order modulation
[2018-09-26 21:59:26,122 INFO L381 AbstractCegarLoop]: Interprodecural is true
[2018-09-26 21:59:26,122 INFO L382 AbstractCegarLoop]: Hoare is true
[2018-09-26 21:59:26,123 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-09-26 21:59:26,123 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-09-26 21:59:26,123 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-09-26 21:59:26,123 INFO L386 AbstractCegarLoop]: Difference is false
[2018-09-26 21:59:26,123 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-09-26 21:59:26,123 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-09-26 21:59:26,139 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states.
[2018-09-26 21:59:26,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2018-09-26 21:59:26,146 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:26,147 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2018-09-26 21:59:26,148 INFO L423 AbstractCegarLoop]: === Iteration 1 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:26,156 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:26,157 INFO L82 PathProgramCache]: Analyzing trace with hash 924708, now seen corresponding path program 1 times
[2018-09-26 21:59:26,159 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:26,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:26,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:26,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:26,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:26,265 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:26,267 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:26,267 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:26,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 21:59:26,312 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:26,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:26,607 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-26 21:59:26,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-09-26 21:59:26,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-26 21:59:26,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-26 21:59:26,624 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:26,626 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 5 states.
[2018-09-26 21:59:26,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:26,971 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions.
[2018-09-26 21:59:26,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-09-26 21:59:26,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4
[2018-09-26 21:59:26,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:26,984 INFO L225 Difference]: With dead ends: 10
[2018-09-26 21:59:26,985 INFO L226 Difference]: Without dead ends: 6
[2018-09-26 21:59:26,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states.
[2018-09-26 21:59:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6.
[2018-09-26 21:59:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2018-09-26 21:59:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions.
[2018-09-26 21:59:27,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4
[2018-09-26 21:59:27,022 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:27,022 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions.
[2018-09-26 21:59:27,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-26 21:59:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions.
[2018-09-26 21:59:27,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2018-09-26 21:59:27,023 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:27,023 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2018-09-26 21:59:27,024 INFO L423 AbstractCegarLoop]: === Iteration 2 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:27,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:27,024 INFO L82 PathProgramCache]: Analyzing trace with hash 28663973, now seen corresponding path program 1 times
[2018-09-26 21:59:27,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:27,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:27,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:27,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:27,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:27,030 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:27,030 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:27,031 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:27,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 21:59:27,056 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:27,268 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:27,268 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4
[2018-09-26 21:59:27,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-26 21:59:27,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-26 21:59:27,271 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:27,271 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states.
[2018-09-26 21:59:27,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:27,582 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions.
[2018-09-26 21:59:27,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-09-26 21:59:27,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5
[2018-09-26 21:59:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:27,588 INFO L225 Difference]: With dead ends: 9
[2018-09-26 21:59:27,588 INFO L226 Difference]: Without dead ends: 7
[2018-09-26 21:59:27,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:27,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states.
[2018-09-26 21:59:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7.
[2018-09-26 21:59:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2018-09-26 21:59:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions.
[2018-09-26 21:59:27,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5
[2018-09-26 21:59:27,594 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:27,594 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions.
[2018-09-26 21:59:27,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-26 21:59:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions.
[2018-09-26 21:59:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2018-09-26 21:59:27,595 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:27,596 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1]
[2018-09-26 21:59:27,596 INFO L423 AbstractCegarLoop]: === Iteration 3 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:27,597 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:27,597 INFO L82 PathProgramCache]: Analyzing trace with hash 888581188, now seen corresponding path program 2 times
[2018-09-26 21:59:27,597 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:27,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:27,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:27,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:27,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:27,606 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:27,607 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:27,607 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:27,622 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 21:59:27,633 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 21:59:27,633 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:27,635 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:27,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:27,832 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:27,832 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5
[2018-09-26 21:59:27,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-09-26 21:59:27,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-09-26 21:59:27,833 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:27,833 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states.
[2018-09-26 21:59:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:28,159 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions.
[2018-09-26 21:59:28,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-09-26 21:59:28,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6
[2018-09-26 21:59:28,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:28,165 INFO L225 Difference]: With dead ends: 10
[2018-09-26 21:59:28,166 INFO L226 Difference]: Without dead ends: 8
[2018-09-26 21:59:28,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2018-09-26 21:59:28,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2018-09-26 21:59:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2018-09-26 21:59:28,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2018-09-26 21:59:28,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6
[2018-09-26 21:59:28,170 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:28,170 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2018-09-26 21:59:28,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-09-26 21:59:28,170 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2018-09-26 21:59:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2018-09-26 21:59:28,171 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:28,171 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1]
[2018-09-26 21:59:28,171 INFO L423 AbstractCegarLoop]: === Iteration 4 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:28,171 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1776211077, now seen corresponding path program 3 times
[2018-09-26 21:59:28,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:28,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:28,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:28,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:28,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:28,181 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:28,181 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:28,181 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:28,191 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-26 21:59:28,199 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2018-09-26 21:59:28,199 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:28,200 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:28,644 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:28,645 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6
[2018-09-26 21:59:28,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-09-26 21:59:28,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-09-26 21:59:28,646 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:28,646 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states.
[2018-09-26 21:59:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:28,947 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions.
[2018-09-26 21:59:28,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-09-26 21:59:28,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7
[2018-09-26 21:59:28,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:28,948 INFO L225 Difference]: With dead ends: 11
[2018-09-26 21:59:28,948 INFO L226 Difference]: Without dead ends: 9
[2018-09-26 21:59:28,949 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:28,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2018-09-26 21:59:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2018-09-26 21:59:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2018-09-26 21:59:28,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2018-09-26 21:59:28,954 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7
[2018-09-26 21:59:28,954 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:28,954 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2018-09-26 21:59:28,954 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-09-26 21:59:28,955 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2018-09-26 21:59:28,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2018-09-26 21:59:28,955 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:28,955 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1]
[2018-09-26 21:59:28,956 INFO L423 AbstractCegarLoop]: === Iteration 5 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:28,956 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:28,956 INFO L82 PathProgramCache]: Analyzing trace with hash -772033436, now seen corresponding path program 4 times
[2018-09-26 21:59:28,956 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:28,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:28,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:28,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:28,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:28,969 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:28,969 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:28,969 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:28,980 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 21:59:28,990 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 21:59:28,990 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:28,992 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:29,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:29,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2018-09-26 21:59:29,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-09-26 21:59:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-09-26 21:59:29,112 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:29,112 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states.
[2018-09-26 21:59:29,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:29,722 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions.
[2018-09-26 21:59:29,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-26 21:59:29,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8
[2018-09-26 21:59:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:29,724 INFO L225 Difference]: With dead ends: 12
[2018-09-26 21:59:29,724 INFO L226 Difference]: Without dead ends: 10
[2018-09-26 21:59:29,725 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:29,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2018-09-26 21:59:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2018-09-26 21:59:29,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2018-09-26 21:59:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2018-09-26 21:59:29,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8
[2018-09-26 21:59:29,729 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:29,729 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2018-09-26 21:59:29,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-09-26 21:59:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2018-09-26 21:59:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-09-26 21:59:29,730 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:29,730 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1]
[2018-09-26 21:59:29,731 INFO L423 AbstractCegarLoop]: === Iteration 6 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:29,731 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:29,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1836765285, now seen corresponding path program 5 times
[2018-09-26 21:59:29,731 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:29,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:29,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:29,732 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:29,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:29,741 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:29,741 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:29,741 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:29,759 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 21:59:29,774 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2018-09-26 21:59:29,774 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:29,776 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:30,002 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:30,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2018-09-26 21:59:30,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-09-26 21:59:30,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-09-26 21:59:30,003 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:30,003 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states.
[2018-09-26 21:59:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:30,345 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions.
[2018-09-26 21:59:30,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2018-09-26 21:59:30,347 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9
[2018-09-26 21:59:30,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:30,348 INFO L225 Difference]: With dead ends: 13
[2018-09-26 21:59:30,348 INFO L226 Difference]: Without dead ends: 11
[2018-09-26 21:59:30,348 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:30,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2018-09-26 21:59:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2018-09-26 21:59:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2018-09-26 21:59:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2018-09-26 21:59:30,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9
[2018-09-26 21:59:30,352 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:30,352 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2018-09-26 21:59:30,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-09-26 21:59:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2018-09-26 21:59:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2018-09-26 21:59:30,353 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:30,353 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1]
[2018-09-26 21:59:30,354 INFO L423 AbstractCegarLoop]: === Iteration 7 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:30,354 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:30,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1105147012, now seen corresponding path program 6 times
[2018-09-26 21:59:30,354 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:30,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:30,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:30,356 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:30,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:30,364 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:30,365 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:30,365 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:30,379 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-26 21:59:30,394 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2018-09-26 21:59:30,394 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:30,395 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:30,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:30,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2018-09-26 21:59:30,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-09-26 21:59:30,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-09-26 21:59:30,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:30,600 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states.
[2018-09-26 21:59:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:31,014 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions.
[2018-09-26 21:59:31,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2018-09-26 21:59:31,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10
[2018-09-26 21:59:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:31,016 INFO L225 Difference]: With dead ends: 14
[2018-09-26 21:59:31,016 INFO L226 Difference]: Without dead ends: 12
[2018-09-26 21:59:31,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:31,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2018-09-26 21:59:31,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2018-09-26 21:59:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2018-09-26 21:59:31,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2018-09-26 21:59:31,020 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10
[2018-09-26 21:59:31,021 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:31,021 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2018-09-26 21:59:31,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-09-26 21:59:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2018-09-26 21:59:31,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-09-26 21:59:31,022 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:31,022 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1]
[2018-09-26 21:59:31,022 INFO L423 AbstractCegarLoop]: === Iteration 8 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:31,022 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:31,022 INFO L82 PathProgramCache]: Analyzing trace with hash -100182971, now seen corresponding path program 7 times
[2018-09-26 21:59:31,023 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:31,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:31,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:31,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:31,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:31,034 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:31,035 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:31,035 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:31,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 21:59:31,064 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:31,310 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:31,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:31,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10
[2018-09-26 21:59:31,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-09-26 21:59:31,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-09-26 21:59:31,333 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:31,334 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states.
[2018-09-26 21:59:31,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:31,864 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions.
[2018-09-26 21:59:31,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2018-09-26 21:59:31,864 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11
[2018-09-26 21:59:31,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:31,865 INFO L225 Difference]: With dead ends: 15
[2018-09-26 21:59:31,865 INFO L226 Difference]: Without dead ends: 13
[2018-09-26 21:59:31,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2018-09-26 21:59:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2018-09-26 21:59:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2018-09-26 21:59:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2018-09-26 21:59:31,870 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11
[2018-09-26 21:59:31,870 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:31,870 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2018-09-26 21:59:31,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-09-26 21:59:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2018-09-26 21:59:31,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2018-09-26 21:59:31,871 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:31,871 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1]
[2018-09-26 21:59:31,871 INFO L423 AbstractCegarLoop]: === Iteration 9 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:31,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:31,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1189293220, now seen corresponding path program 8 times
[2018-09-26 21:59:31,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:31,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:31,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:31,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:31,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:31,882 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:31,882 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:31,882 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:31,898 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 21:59:31,921 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 21:59:31,921 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:31,924 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:32,285 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:32,285 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2018-09-26 21:59:32,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-09-26 21:59:32,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-09-26 21:59:32,286 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:32,286 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states.
[2018-09-26 21:59:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:32,863 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions.
[2018-09-26 21:59:32,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2018-09-26 21:59:32,863 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12
[2018-09-26 21:59:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:32,864 INFO L225 Difference]: With dead ends: 16
[2018-09-26 21:59:32,864 INFO L226 Difference]: Without dead ends: 14
[2018-09-26 21:59:32,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2018-09-26 21:59:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2018-09-26 21:59:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-09-26 21:59:32,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2018-09-26 21:59:32,870 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12
[2018-09-26 21:59:32,870 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:32,870 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2018-09-26 21:59:32,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-09-26 21:59:32,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2018-09-26 21:59:32,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-09-26 21:59:32,871 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:32,871 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1]
[2018-09-26 21:59:32,871 INFO L423 AbstractCegarLoop]: === Iteration 10 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:32,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:32,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1786617819, now seen corresponding path program 9 times
[2018-09-26 21:59:32,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:32,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:32,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:32,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:32,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:32,881 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:32,881 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:32,882 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:32,896 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-26 21:59:32,918 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2018-09-26 21:59:32,918 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:32,919 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:33,239 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:33,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12
[2018-09-26 21:59:33,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2018-09-26 21:59:33,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2018-09-26 21:59:33,240 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:33,240 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states.
[2018-09-26 21:59:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:34,022 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions.
[2018-09-26 21:59:34,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2018-09-26 21:59:34,023 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13
[2018-09-26 21:59:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:34,024 INFO L225 Difference]: With dead ends: 17
[2018-09-26 21:59:34,024 INFO L226 Difference]: Without dead ends: 15
[2018-09-26 21:59:34,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2018-09-26 21:59:34,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2018-09-26 21:59:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2018-09-26 21:59:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2018-09-26 21:59:34,029 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13
[2018-09-26 21:59:34,029 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:34,029 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2018-09-26 21:59:34,029 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2018-09-26 21:59:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2018-09-26 21:59:34,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2018-09-26 21:59:34,029 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:34,030 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1]
[2018-09-26 21:59:34,030 INFO L423 AbstractCegarLoop]: === Iteration 11 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:34,030 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:34,030 INFO L82 PathProgramCache]: Analyzing trace with hash 449420484, now seen corresponding path program 10 times
[2018-09-26 21:59:34,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:34,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:34,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:34,031 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:34,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:34,040 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:34,040 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:34,040 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:34,050 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 21:59:34,084 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 21:59:34,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:34,087 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:34,413 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:34,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13
[2018-09-26 21:59:34,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2018-09-26 21:59:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2018-09-26 21:59:34,414 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:34,414 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states.
[2018-09-26 21:59:35,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:35,549 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions.
[2018-09-26 21:59:35,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2018-09-26 21:59:35,549 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14
[2018-09-26 21:59:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:35,550 INFO L225 Difference]: With dead ends: 18
[2018-09-26 21:59:35,551 INFO L226 Difference]: Without dead ends: 16
[2018-09-26 21:59:35,551 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2018-09-26 21:59:35,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2018-09-26 21:59:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-09-26 21:59:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions.
[2018-09-26 21:59:35,555 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14
[2018-09-26 21:59:35,555 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:35,555 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions.
[2018-09-26 21:59:35,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2018-09-26 21:59:35,555 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions.
[2018-09-26 21:59:35,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-09-26 21:59:35,556 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:35,556 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1]
[2018-09-26 21:59:35,556 INFO L423 AbstractCegarLoop]: === Iteration 12 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:35,556 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:35,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1047131141, now seen corresponding path program 11 times
[2018-09-26 21:59:35,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:35,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:35,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:35,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:35,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:35,567 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:35,567 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:35,567 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:35,577 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 21:59:35,611 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-09-26 21:59:35,612 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:35,614 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:35,933 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:35,934 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14
[2018-09-26 21:59:35,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states
[2018-09-26 21:59:35,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2018-09-26 21:59:35,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:35,934 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states.
[2018-09-26 21:59:36,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:36,948 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions.
[2018-09-26 21:59:36,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2018-09-26 21:59:36,950 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15
[2018-09-26 21:59:36,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:36,951 INFO L225 Difference]: With dead ends: 19
[2018-09-26 21:59:36,951 INFO L226 Difference]: Without dead ends: 17
[2018-09-26 21:59:36,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:36,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2018-09-26 21:59:36,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2018-09-26 21:59:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2018-09-26 21:59:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions.
[2018-09-26 21:59:36,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15
[2018-09-26 21:59:36,956 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:36,956 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions.
[2018-09-26 21:59:36,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2018-09-26 21:59:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions.
[2018-09-26 21:59:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2018-09-26 21:59:36,957 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:36,957 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1]
[2018-09-26 21:59:36,958 INFO L423 AbstractCegarLoop]: === Iteration 13 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:36,958 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:36,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1898674972, now seen corresponding path program 12 times
[2018-09-26 21:59:36,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:36,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:36,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:36,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:36,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:36,971 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:36,971 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:36,971 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:36,991 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-26 21:59:37,032 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-09-26 21:59:37,033 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:37,035 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:37,400 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:37,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2018-09-26 21:59:37,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states
[2018-09-26 21:59:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2018-09-26 21:59:37,400 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:37,401 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states.
[2018-09-26 21:59:39,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:39,241 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions.
[2018-09-26 21:59:39,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2018-09-26 21:59:39,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16
[2018-09-26 21:59:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:39,243 INFO L225 Difference]: With dead ends: 20
[2018-09-26 21:59:39,243 INFO L226 Difference]: Without dead ends: 18
[2018-09-26 21:59:39,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2018-09-26 21:59:39,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2018-09-26 21:59:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-09-26 21:59:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2018-09-26 21:59:39,248 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16
[2018-09-26 21:59:39,248 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:39,248 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2018-09-26 21:59:39,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2018-09-26 21:59:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2018-09-26 21:59:39,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-09-26 21:59:39,249 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:39,249 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1]
[2018-09-26 21:59:39,249 INFO L423 AbstractCegarLoop]: === Iteration 14 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:39,249 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:39,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1270616037, now seen corresponding path program 13 times
[2018-09-26 21:59:39,250 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:39,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:39,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:39,251 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:39,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:39,260 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:39,261 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:39,261 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:39,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 21:59:39,336 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:39,606 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:39,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:39,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16
[2018-09-26 21:59:39,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states
[2018-09-26 21:59:39,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2018-09-26 21:59:39,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:39,630 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states.
[2018-09-26 21:59:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:41,714 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions.
[2018-09-26 21:59:41,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2018-09-26 21:59:41,714 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17
[2018-09-26 21:59:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:41,715 INFO L225 Difference]: With dead ends: 21
[2018-09-26 21:59:41,715 INFO L226 Difference]: Without dead ends: 19
[2018-09-26 21:59:41,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2018-09-26 21:59:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2018-09-26 21:59:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2018-09-26 21:59:41,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions.
[2018-09-26 21:59:41,720 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17
[2018-09-26 21:59:41,720 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:41,721 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions.
[2018-09-26 21:59:41,721 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2018-09-26 21:59:41,721 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions.
[2018-09-26 21:59:41,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2018-09-26 21:59:41,721 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:41,721 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1]
[2018-09-26 21:59:41,722 INFO L423 AbstractCegarLoop]: === Iteration 15 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:41,722 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:41,722 INFO L82 PathProgramCache]: Analyzing trace with hash 734389508, now seen corresponding path program 14 times
[2018-09-26 21:59:41,722 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:41,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:41,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:41,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:41,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:41,733 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:41,733 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:41,733 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:41,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 21:59:41,803 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 21:59:41,803 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:41,805 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:42,531 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:42,553 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:42,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17
[2018-09-26 21:59:42,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states
[2018-09-26 21:59:42,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2018-09-26 21:59:42,554 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:42,554 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states.
[2018-09-26 21:59:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:43,764 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions.
[2018-09-26 21:59:43,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2018-09-26 21:59:43,764 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18
[2018-09-26 21:59:43,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:43,766 INFO L225 Difference]: With dead ends: 22
[2018-09-26 21:59:43,766 INFO L226 Difference]: Without dead ends: 20
[2018-09-26 21:59:43,766 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:43,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2018-09-26 21:59:43,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2018-09-26 21:59:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-09-26 21:59:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2018-09-26 21:59:43,772 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18
[2018-09-26 21:59:43,772 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:43,772 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2018-09-26 21:59:43,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2018-09-26 21:59:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2018-09-26 21:59:43,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-09-26 21:59:43,773 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:43,774 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1]
[2018-09-26 21:59:43,774 INFO L423 AbstractCegarLoop]: === Iteration 16 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:43,774 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:43,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1291236293, now seen corresponding path program 15 times
[2018-09-26 21:59:43,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:43,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:43,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:43,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:43,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:43,785 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:43,786 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:43,786 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:43,801 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-26 21:59:43,905 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-09-26 21:59:43,906 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:43,913 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:45,325 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:45,326 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18
[2018-09-26 21:59:45,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states
[2018-09-26 21:59:45,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2018-09-26 21:59:45,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:45,327 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 19 states.
[2018-09-26 21:59:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:46,719 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions.
[2018-09-26 21:59:46,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2018-09-26 21:59:46,720 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 19
[2018-09-26 21:59:46,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:46,721 INFO L225 Difference]: With dead ends: 23
[2018-09-26 21:59:46,721 INFO L226 Difference]: Without dead ends: 21
[2018-09-26 21:59:46,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:46,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2018-09-26 21:59:46,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2018-09-26 21:59:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2018-09-26 21:59:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions.
[2018-09-26 21:59:46,727 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 19
[2018-09-26 21:59:46,727 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:46,727 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions.
[2018-09-26 21:59:46,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2018-09-26 21:59:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions.
[2018-09-26 21:59:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-09-26 21:59:46,728 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:46,728 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1]
[2018-09-26 21:59:46,728 INFO L423 AbstractCegarLoop]: === Iteration 17 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:46,728 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:46,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1373617444, now seen corresponding path program 16 times
[2018-09-26 21:59:46,729 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:46,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:46,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:46,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:46,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:46,738 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:46,738 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:46,738 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:46,756 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 21:59:46,834 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 21:59:46,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:46,837 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:47,278 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:47,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19
[2018-09-26 21:59:47,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states
[2018-09-26 21:59:47,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2018-09-26 21:59:47,278 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:47,279 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 20 states.
[2018-09-26 21:59:48,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:48,924 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions.
[2018-09-26 21:59:48,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2018-09-26 21:59:48,924 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 20
[2018-09-26 21:59:48,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:48,925 INFO L225 Difference]: With dead ends: 24
[2018-09-26 21:59:48,926 INFO L226 Difference]: Without dead ends: 22
[2018-09-26 21:59:48,926 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:48,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2018-09-26 21:59:48,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2018-09-26 21:59:48,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-09-26 21:59:48,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2018-09-26 21:59:48,931 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20
[2018-09-26 21:59:48,932 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:48,932 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2018-09-26 21:59:48,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2018-09-26 21:59:48,932 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2018-09-26 21:59:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2018-09-26 21:59:48,932 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:48,933 INFO L375 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1]
[2018-09-26 21:59:48,933 INFO L423 AbstractCegarLoop]: === Iteration 18 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:48,933 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:48,933 INFO L82 PathProgramCache]: Analyzing trace with hash -367534171, now seen corresponding path program 17 times
[2018-09-26 21:59:48,933 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:48,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:48,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:48,934 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:48,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:48,943 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:48,944 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:48,944 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:48,957 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 21:59:49,053 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2018-09-26 21:59:49,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:49,056 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:49,538 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:49,559 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:49,560 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20
[2018-09-26 21:59:49,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states
[2018-09-26 21:59:49,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2018-09-26 21:59:49,560 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:49,560 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states.
[2018-09-26 21:59:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:51,220 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions.
[2018-09-26 21:59:51,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2018-09-26 21:59:51,221 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21
[2018-09-26 21:59:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:51,222 INFO L225 Difference]: With dead ends: 25
[2018-09-26 21:59:51,222 INFO L226 Difference]: Without dead ends: 23
[2018-09-26 21:59:51,223 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:51,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2018-09-26 21:59:51,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23.
[2018-09-26 21:59:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2018-09-26 21:59:51,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions.
[2018-09-26 21:59:51,227 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 21
[2018-09-26 21:59:51,227 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:51,227 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions.
[2018-09-26 21:59:51,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2018-09-26 21:59:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions.
[2018-09-26 21:59:51,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2018-09-26 21:59:51,228 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:51,228 INFO L375 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1]
[2018-09-26 21:59:51,228 INFO L423 AbstractCegarLoop]: === Iteration 19 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:51,228 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:51,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1491340612, now seen corresponding path program 18 times
[2018-09-26 21:59:51,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:51,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:51,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:51,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:51,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:51,238 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:51,238 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:51,238 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:51,250 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-26 21:59:51,367 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s)
[2018-09-26 21:59:51,367 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:51,370 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:52,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:52,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21
[2018-09-26 21:59:52,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states
[2018-09-26 21:59:52,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2018-09-26 21:59:52,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:52,161 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 22 states.
[2018-09-26 21:59:54,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:54,086 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions.
[2018-09-26 21:59:54,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2018-09-26 21:59:54,087 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22
[2018-09-26 21:59:54,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:54,088 INFO L225 Difference]: With dead ends: 26
[2018-09-26 21:59:54,088 INFO L226 Difference]: Without dead ends: 24
[2018-09-26 21:59:54,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2018-09-26 21:59:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2018-09-26 21:59:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-09-26 21:59:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2018-09-26 21:59:54,094 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 22
[2018-09-26 21:59:54,094 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:54,094 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2018-09-26 21:59:54,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2018-09-26 21:59:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2018-09-26 21:59:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2018-09-26 21:59:54,095 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:54,095 INFO L375 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1]
[2018-09-26 21:59:54,095 INFO L423 AbstractCegarLoop]: === Iteration 20 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:54,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:54,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1013083259, now seen corresponding path program 19 times
[2018-09-26 21:59:54,096 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:54,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:54,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:54,097 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:54,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:54,105 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:54,105 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:54,105 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:54,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 21:59:54,273 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:54,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:54,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22
[2018-09-26 21:59:54,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states
[2018-09-26 21:59:54,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2018-09-26 21:59:54,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:54,780 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 23 states.
[2018-09-26 21:59:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:56,930 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions.
[2018-09-26 21:59:56,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2018-09-26 21:59:56,931 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 23
[2018-09-26 21:59:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:56,932 INFO L225 Difference]: With dead ends: 27
[2018-09-26 21:59:56,932 INFO L226 Difference]: Without dead ends: 25
[2018-09-26 21:59:56,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2018-09-26 21:59:56,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2018-09-26 21:59:56,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2018-09-26 21:59:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions.
[2018-09-26 21:59:56,938 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 23
[2018-09-26 21:59:56,938 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:56,938 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions.
[2018-09-26 21:59:56,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2018-09-26 21:59:56,938 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions.
[2018-09-26 21:59:56,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2018-09-26 21:59:56,939 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:56,939 INFO L375 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1]
[2018-09-26 21:59:56,939 INFO L423 AbstractCegarLoop]: === Iteration 21 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:56,939 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:56,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1340811932, now seen corresponding path program 20 times
[2018-09-26 21:59:56,940 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:56,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:56,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:56,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 21:59:56,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:56,948 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 21:59:56,949 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 21:59:56,949 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 21:59:56,967 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 21:59:57,126 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 21:59:57,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 21:59:57,129 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 21:59:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 21:59:57,796 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 21:59:57,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23
[2018-09-26 21:59:57,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states
[2018-09-26 21:59:57,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2018-09-26 21:59:57,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 21:59:57,797 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 24 states.
[2018-09-26 21:59:59,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 21:59:59,986 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions.
[2018-09-26 21:59:59,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2018-09-26 21:59:59,986 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 24
[2018-09-26 21:59:59,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 21:59:59,987 INFO L225 Difference]: With dead ends: 28
[2018-09-26 21:59:59,987 INFO L226 Difference]: Without dead ends: 26
[2018-09-26 21:59:59,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 21:59:59,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2018-09-26 21:59:59,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2018-09-26 21:59:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-09-26 21:59:59,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions.
[2018-09-26 21:59:59,993 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 24
[2018-09-26 21:59:59,993 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 21:59:59,993 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions.
[2018-09-26 21:59:59,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2018-09-26 21:59:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions.
[2018-09-26 21:59:59,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2018-09-26 21:59:59,994 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 21:59:59,994 INFO L375 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1]
[2018-09-26 21:59:59,994 INFO L423 AbstractCegarLoop]: === Iteration 22 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 21:59:59,994 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 21:59:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1384501093, now seen corresponding path program 21 times
[2018-09-26 21:59:59,995 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 21:59:59,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 21:59:59,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 21:59:59,996 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 21:59:59,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:00,003 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:00,003 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:00,003 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:00,020 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-26 22:00:00,196 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s)
[2018-09-26 22:00:00,196 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:00,198 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:01,208 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:01,208 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24
[2018-09-26 22:00:01,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states
[2018-09-26 22:00:01,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2018-09-26 22:00:01,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:01,209 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 25 states.
[2018-09-26 22:00:03,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:03,861 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions.
[2018-09-26 22:00:03,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2018-09-26 22:00:03,864 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25
[2018-09-26 22:00:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:03,864 INFO L225 Difference]: With dead ends: 29
[2018-09-26 22:00:03,864 INFO L226 Difference]: Without dead ends: 27
[2018-09-26 22:00:03,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:03,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-09-26 22:00:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2018-09-26 22:00:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2018-09-26 22:00:03,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions.
[2018-09-26 22:00:03,869 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 25
[2018-09-26 22:00:03,869 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:03,869 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions.
[2018-09-26 22:00:03,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2018-09-26 22:00:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions.
[2018-09-26 22:00:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2018-09-26 22:00:03,870 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:03,870 INFO L375 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1]
[2018-09-26 22:00:03,870 INFO L423 AbstractCegarLoop]: === Iteration 23 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:03,870 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:03,871 INFO L82 PathProgramCache]: Analyzing trace with hash -30141052, now seen corresponding path program 22 times
[2018-09-26 22:00:03,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:03,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:03,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:03,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:03,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:03,882 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:03,883 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:03,883 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:03,899 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 22:00:04,097 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 22:00:04,097 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:04,100 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:05,167 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:05,167 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25
[2018-09-26 22:00:05,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states
[2018-09-26 22:00:05,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2018-09-26 22:00:05,168 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:05,168 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 26 states.
[2018-09-26 22:00:07,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:07,921 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions.
[2018-09-26 22:00:07,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2018-09-26 22:00:07,922 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26
[2018-09-26 22:00:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:07,922 INFO L225 Difference]: With dead ends: 30
[2018-09-26 22:00:07,922 INFO L226 Difference]: Without dead ends: 28
[2018-09-26 22:00:07,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2018-09-26 22:00:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2018-09-26 22:00:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-09-26 22:00:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions.
[2018-09-26 22:00:07,928 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26
[2018-09-26 22:00:07,928 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:07,928 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions.
[2018-09-26 22:00:07,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states.
[2018-09-26 22:00:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions.
[2018-09-26 22:00:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2018-09-26 22:00:07,929 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:07,929 INFO L375 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1]
[2018-09-26 22:00:07,929 INFO L423 AbstractCegarLoop]: === Iteration 24 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:07,929 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:07,930 INFO L82 PathProgramCache]: Analyzing trace with hash -934374587, now seen corresponding path program 23 times
[2018-09-26 22:00:07,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:07,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:07,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:07,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:07,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:07,938 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:07,938 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:07,938 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:07,955 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 22:00:08,213 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s)
[2018-09-26 22:00:08,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:08,217 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:09,236 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:09,258 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:09,258 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26
[2018-09-26 22:00:09,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states
[2018-09-26 22:00:09,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2018-09-26 22:00:09,258 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:09,258 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 27 states.
[2018-09-26 22:00:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:11,934 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions.
[2018-09-26 22:00:11,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2018-09-26 22:00:11,935 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 27
[2018-09-26 22:00:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:11,936 INFO L225 Difference]: With dead ends: 31
[2018-09-26 22:00:11,936 INFO L226 Difference]: Without dead ends: 29
[2018-09-26 22:00:11,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:11,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-09-26 22:00:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2018-09-26 22:00:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2018-09-26 22:00:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions.
[2018-09-26 22:00:11,941 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 27
[2018-09-26 22:00:11,942 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:11,942 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions.
[2018-09-26 22:00:11,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states.
[2018-09-26 22:00:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions.
[2018-09-26 22:00:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2018-09-26 22:00:11,942 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:11,943 INFO L375 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1]
[2018-09-26 22:00:11,943 INFO L423 AbstractCegarLoop]: === Iteration 25 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:11,943 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1099156900, now seen corresponding path program 24 times
[2018-09-26 22:00:11,943 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:11,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:11,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:11,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:11,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:11,950 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:11,951 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:11,951 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:11,964 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-26 22:00:12,236 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s)
[2018-09-26 22:00:12,236 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:12,239 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:12,974 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:12,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:12,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27
[2018-09-26 22:00:12,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states
[2018-09-26 22:00:12,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2018-09-26 22:00:12,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:12,995 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 28 states.
[2018-09-26 22:00:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:15,972 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions.
[2018-09-26 22:00:15,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2018-09-26 22:00:15,972 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 28
[2018-09-26 22:00:15,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:15,973 INFO L225 Difference]: With dead ends: 32
[2018-09-26 22:00:15,973 INFO L226 Difference]: Without dead ends: 30
[2018-09-26 22:00:15,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:15,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2018-09-26 22:00:15,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2018-09-26 22:00:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-09-26 22:00:15,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions.
[2018-09-26 22:00:15,978 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 28
[2018-09-26 22:00:15,978 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:15,978 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions.
[2018-09-26 22:00:15,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states.
[2018-09-26 22:00:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions.
[2018-09-26 22:00:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2018-09-26 22:00:15,979 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:15,979 INFO L375 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1]
[2018-09-26 22:00:15,979 INFO L423 AbstractCegarLoop]: === Iteration 26 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:15,980 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:15,980 INFO L82 PathProgramCache]: Analyzing trace with hash -285876443, now seen corresponding path program 25 times
[2018-09-26 22:00:15,980 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:15,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:15,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:15,981 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:15,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:15,987 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:15,987 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:15,987 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:16,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:00:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 22:00:16,338 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:17,118 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:17,138 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:17,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28
[2018-09-26 22:00:17,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states
[2018-09-26 22:00:17,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2018-09-26 22:00:17,139 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:17,139 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 29 states.
[2018-09-26 22:00:20,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:20,319 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions.
[2018-09-26 22:00:20,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2018-09-26 22:00:20,320 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 29
[2018-09-26 22:00:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:20,321 INFO L225 Difference]: With dead ends: 33
[2018-09-26 22:00:20,321 INFO L226 Difference]: Without dead ends: 31
[2018-09-26 22:00:20,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:20,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-09-26 22:00:20,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2018-09-26 22:00:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2018-09-26 22:00:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions.
[2018-09-26 22:00:20,328 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 29
[2018-09-26 22:00:20,328 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:20,328 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions.
[2018-09-26 22:00:20,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states.
[2018-09-26 22:00:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions.
[2018-09-26 22:00:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2018-09-26 22:00:20,329 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:20,329 INFO L375 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1]
[2018-09-26 22:00:20,329 INFO L423 AbstractCegarLoop]: === Iteration 27 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:20,329 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash -272237116, now seen corresponding path program 26 times
[2018-09-26 22:00:20,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:20,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:20,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:20,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:00:20,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:20,336 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:20,337 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:20,337 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:20,354 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 22:00:20,735 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 22:00:20,735 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:20,739 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:22,861 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:22,862 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29
[2018-09-26 22:00:22,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states
[2018-09-26 22:00:22,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2018-09-26 22:00:22,862 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:22,862 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 30 states.
[2018-09-26 22:00:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:26,168 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions.
[2018-09-26 22:00:26,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2018-09-26 22:00:26,168 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30
[2018-09-26 22:00:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:26,169 INFO L225 Difference]: With dead ends: 34
[2018-09-26 22:00:26,169 INFO L226 Difference]: Without dead ends: 32
[2018-09-26 22:00:26,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:26,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2018-09-26 22:00:26,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2018-09-26 22:00:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-09-26 22:00:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions.
[2018-09-26 22:00:26,174 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 30
[2018-09-26 22:00:26,174 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:26,174 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions.
[2018-09-26 22:00:26,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states.
[2018-09-26 22:00:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions.
[2018-09-26 22:00:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2018-09-26 22:00:26,175 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:26,175 INFO L375 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1]
[2018-09-26 22:00:26,175 INFO L423 AbstractCegarLoop]: === Iteration 28 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:26,175 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:26,176 INFO L82 PathProgramCache]: Analyzing trace with hash 150582021, now seen corresponding path program 27 times
[2018-09-26 22:00:26,176 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:26,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:26,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:26,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:26,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:26,183 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:26,184 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:26,184 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 (exit command is (exit), workingDir is null)
[2018-09-26 22:00:26,205 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:26,644 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s)
[2018-09-26 22:00:26,645 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:26,648 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:27,729 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:27,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30
[2018-09-26 22:00:27,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states
[2018-09-26 22:00:27,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2018-09-26 22:00:27,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:27,730 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 31 states.
[2018-09-26 22:00:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:31,296 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions.
[2018-09-26 22:00:31,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2018-09-26 22:00:31,297 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 31
[2018-09-26 22:00:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:31,297 INFO L225 Difference]: With dead ends: 35
[2018-09-26 22:00:31,297 INFO L226 Difference]: Without dead ends: 33
[2018-09-26 22:00:31,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:31,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-09-26 22:00:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2018-09-26 22:00:31,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2018-09-26 22:00:31,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions.
[2018-09-26 22:00:31,304 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31
[2018-09-26 22:00:31,304 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:31,304 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions.
[2018-09-26 22:00:31,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states.
[2018-09-26 22:00:31,304 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions.
[2018-09-26 22:00:31,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2018-09-26 22:00:31,305 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:31,305 INFO L375 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1]
[2018-09-26 22:00:31,305 INFO L423 AbstractCegarLoop]: === Iteration 29 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:31,305 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:31,305 INFO L82 PathProgramCache]: Analyzing trace with hash 373073380, now seen corresponding path program 28 times
[2018-09-26 22:00:31,306 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:31,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:31,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:31,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:31,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:31,312 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:31,313 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:31,313 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:31,324 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 22:00:31,834 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 22:00:31,834 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:31,839 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:33,114 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:33,114 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31
[2018-09-26 22:00:33,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states
[2018-09-26 22:00:33,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2018-09-26 22:00:33,115 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:33,115 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 32 states.
[2018-09-26 22:00:36,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:36,937 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions.
[2018-09-26 22:00:36,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2018-09-26 22:00:36,938 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 32
[2018-09-26 22:00:36,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:36,939 INFO L225 Difference]: With dead ends: 36
[2018-09-26 22:00:36,939 INFO L226 Difference]: Without dead ends: 34
[2018-09-26 22:00:36,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2018-09-26 22:00:36,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2018-09-26 22:00:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-09-26 22:00:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions.
[2018-09-26 22:00:36,944 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 32
[2018-09-26 22:00:36,944 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:36,944 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions.
[2018-09-26 22:00:36,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states.
[2018-09-26 22:00:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions.
[2018-09-26 22:00:36,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2018-09-26 22:00:36,945 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:36,945 INFO L375 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1]
[2018-09-26 22:00:36,945 INFO L423 AbstractCegarLoop]: === Iteration 30 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:36,945 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:36,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1319629083, now seen corresponding path program 29 times
[2018-09-26 22:00:36,946 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:36,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:36,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:36,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:36,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:36,952 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:36,952 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:36,953 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:36,962 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 22:00:37,460 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s)
[2018-09-26 22:00:37,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:37,465 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:38,860 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:38,861 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32
[2018-09-26 22:00:38,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states
[2018-09-26 22:00:38,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2018-09-26 22:00:38,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:38,861 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 33 states.
[2018-09-26 22:00:42,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:42,932 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions.
[2018-09-26 22:00:42,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2018-09-26 22:00:42,932 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 33
[2018-09-26 22:00:42,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:42,933 INFO L225 Difference]: With dead ends: 37
[2018-09-26 22:00:42,933 INFO L226 Difference]: Without dead ends: 35
[2018-09-26 22:00:42,933 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:42,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-09-26 22:00:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35.
[2018-09-26 22:00:42,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2018-09-26 22:00:42,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions.
[2018-09-26 22:00:42,937 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 33
[2018-09-26 22:00:42,938 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:42,938 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions.
[2018-09-26 22:00:42,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states.
[2018-09-26 22:00:42,938 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions.
[2018-09-26 22:00:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2018-09-26 22:00:42,938 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:42,938 INFO L375 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1]
[2018-09-26 22:00:42,938 INFO L423 AbstractCegarLoop]: === Iteration 31 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:42,939 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2041169412, now seen corresponding path program 30 times
[2018-09-26 22:00:42,939 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:42,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:42,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:42,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:42,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:42,946 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:42,946 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:42,946 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:42,966 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-26 22:00:43,509 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s)
[2018-09-26 22:00:43,509 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:43,519 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:44,812 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:44,812 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33
[2018-09-26 22:00:44,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states
[2018-09-26 22:00:44,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2018-09-26 22:00:44,813 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:44,813 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 34 states.
[2018-09-26 22:00:49,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:49,199 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions.
[2018-09-26 22:00:49,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2018-09-26 22:00:49,199 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34
[2018-09-26 22:00:49,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:49,200 INFO L225 Difference]: With dead ends: 38
[2018-09-26 22:00:49,200 INFO L226 Difference]: Without dead ends: 36
[2018-09-26 22:00:49,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2018-09-26 22:00:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2018-09-26 22:00:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2018-09-26 22:00:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions.
[2018-09-26 22:00:49,206 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34
[2018-09-26 22:00:49,206 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:49,206 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions.
[2018-09-26 22:00:49,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states.
[2018-09-26 22:00:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions.
[2018-09-26 22:00:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2018-09-26 22:00:49,207 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:49,207 INFO L375 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1]
[2018-09-26 22:00:49,208 INFO L423 AbstractCegarLoop]: === Iteration 32 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:49,208 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:49,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1148259643, now seen corresponding path program 31 times
[2018-09-26 22:00:49,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:49,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:49,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:49,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:00:49,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:49,218 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:49,218 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:49,218 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:49,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:00:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 22:00:49,854 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:51,055 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:51,056 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34
[2018-09-26 22:00:51,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states
[2018-09-26 22:00:51,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2018-09-26 22:00:51,056 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:51,056 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 35 states.
[2018-09-26 22:00:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:00:55,603 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions.
[2018-09-26 22:00:55,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2018-09-26 22:00:55,604 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 35
[2018-09-26 22:00:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:00:55,605 INFO L225 Difference]: With dead ends: 39
[2018-09-26 22:00:55,605 INFO L226 Difference]: Without dead ends: 37
[2018-09-26 22:00:55,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:00:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-09-26 22:00:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2018-09-26 22:00:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2018-09-26 22:00:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions.
[2018-09-26 22:00:55,610 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35
[2018-09-26 22:00:55,610 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:00:55,610 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions.
[2018-09-26 22:00:55,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states.
[2018-09-26 22:00:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions.
[2018-09-26 22:00:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2018-09-26 22:00:55,610 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:00:55,611 INFO L375 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1]
[2018-09-26 22:00:55,611 INFO L423 AbstractCegarLoop]: === Iteration 33 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:00:55,611 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:00:55,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1236312540, now seen corresponding path program 32 times
[2018-09-26 22:00:55,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:00:55,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:00:55,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:55,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:00:55,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:00:55,617 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:00:55,617 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:00:55,617 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:00:55,631 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 22:00:56,303 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 22:00:56,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:00:56,308 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:00:57,617 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:00:57,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:00:57,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35
[2018-09-26 22:00:57,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states
[2018-09-26 22:00:57,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2018-09-26 22:00:57,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:00:57,640 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 36 states.
[2018-09-26 22:01:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:01:02,548 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions.
[2018-09-26 22:01:02,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2018-09-26 22:01:02,548 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 36
[2018-09-26 22:01:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:01:02,549 INFO L225 Difference]: With dead ends: 40
[2018-09-26 22:01:02,549 INFO L226 Difference]: Without dead ends: 38
[2018-09-26 22:01:02,550 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:01:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2018-09-26 22:01:02,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2018-09-26 22:01:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2018-09-26 22:01:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions.
[2018-09-26 22:01:02,555 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 36
[2018-09-26 22:01:02,555 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:01:02,555 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions.
[2018-09-26 22:01:02,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states.
[2018-09-26 22:01:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions.
[2018-09-26 22:01:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2018-09-26 22:01:02,556 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:01:02,556 INFO L375 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1]
[2018-09-26 22:01:02,556 INFO L423 AbstractCegarLoop]: === Iteration 34 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:01:02,557 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:01:02,557 INFO L82 PathProgramCache]: Analyzing trace with hash 329014949, now seen corresponding path program 33 times
[2018-09-26 22:01:02,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:01:02,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:01:02,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:02,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:01:02,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:02,564 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:01:02,564 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:01:02,564 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:01:02,580 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-26 22:01:03,273 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s)
[2018-09-26 22:01:03,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:01:03,277 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:01:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:01:04,641 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:01:04,641 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36
[2018-09-26 22:01:04,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states
[2018-09-26 22:01:04,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2018-09-26 22:01:04,642 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:01:04,642 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 37 states.
[2018-09-26 22:01:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:01:09,808 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions.
[2018-09-26 22:01:09,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2018-09-26 22:01:09,808 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 37
[2018-09-26 22:01:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:01:09,809 INFO L225 Difference]: With dead ends: 41
[2018-09-26 22:01:09,809 INFO L226 Difference]: Without dead ends: 39
[2018-09-26 22:01:09,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:01:09,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-09-26 22:01:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39.
[2018-09-26 22:01:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2018-09-26 22:01:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions.
[2018-09-26 22:01:09,814 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 37
[2018-09-26 22:01:09,814 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:01:09,814 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions.
[2018-09-26 22:01:09,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states.
[2018-09-26 22:01:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions.
[2018-09-26 22:01:09,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2018-09-26 22:01:09,815 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:01:09,815 INFO L375 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1]
[2018-09-26 22:01:09,815 INFO L423 AbstractCegarLoop]: === Iteration 35 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:01:09,816 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:01:09,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1609526852, now seen corresponding path program 34 times
[2018-09-26 22:01:09,816 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:01:09,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:01:09,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:09,817 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:01:09,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:09,823 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:01:09,823 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:01:09,823 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:01:09,832 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 22:01:10,578 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 22:01:10,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:01:10,583 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:01:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:01:12,032 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:01:12,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37
[2018-09-26 22:01:12,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states
[2018-09-26 22:01:12,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2018-09-26 22:01:12,033 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:01:12,033 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 38 states.
[2018-09-26 22:01:17,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:01:17,467 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions.
[2018-09-26 22:01:17,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2018-09-26 22:01:17,467 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38
[2018-09-26 22:01:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:01:17,468 INFO L225 Difference]: With dead ends: 42
[2018-09-26 22:01:17,468 INFO L226 Difference]: Without dead ends: 40
[2018-09-26 22:01:17,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:01:17,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2018-09-26 22:01:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2018-09-26 22:01:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2018-09-26 22:01:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions.
[2018-09-26 22:01:17,475 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 38
[2018-09-26 22:01:17,475 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:01:17,475 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions.
[2018-09-26 22:01:17,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states.
[2018-09-26 22:01:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions.
[2018-09-26 22:01:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2018-09-26 22:01:17,476 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:01:17,476 INFO L375 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1]
[2018-09-26 22:01:17,476 INFO L423 AbstractCegarLoop]: === Iteration 36 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:01:17,477 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:01:17,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1644277115, now seen corresponding path program 35 times
[2018-09-26 22:01:17,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:01:17,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:01:17,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:17,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:01:17,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:17,484 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:01:17,484 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:01:17,484 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:01:17,506 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 22:01:18,469 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s)
[2018-09-26 22:01:18,469 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:01:18,476 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:01:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:01:20,025 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:01:20,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38
[2018-09-26 22:01:20,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states
[2018-09-26 22:01:20,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants.
[2018-09-26 22:01:20,026 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:01:20,026 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 39 states.
[2018-09-26 22:01:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:01:25,718 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions.
[2018-09-26 22:01:25,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2018-09-26 22:01:25,719 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 39
[2018-09-26 22:01:25,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:01:25,719 INFO L225 Difference]: With dead ends: 43
[2018-09-26 22:01:25,719 INFO L226 Difference]: Without dead ends: 41
[2018-09-26 22:01:25,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:01:25,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-09-26 22:01:25,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2018-09-26 22:01:25,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2018-09-26 22:01:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions.
[2018-09-26 22:01:25,725 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 39
[2018-09-26 22:01:25,725 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:01:25,725 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions.
[2018-09-26 22:01:25,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states.
[2018-09-26 22:01:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions.
[2018-09-26 22:01:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2018-09-26 22:01:25,726 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:01:25,726 INFO L375 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1]
[2018-09-26 22:01:25,726 INFO L423 AbstractCegarLoop]: === Iteration 37 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:01:25,726 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:01:25,726 INFO L82 PathProgramCache]: Analyzing trace with hash 567015012, now seen corresponding path program 36 times
[2018-09-26 22:01:25,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:01:25,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:01:25,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:25,727 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:01:25,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:25,733 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:01:25,733 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:01:25,734 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:01:25,748 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-26 22:01:26,484 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s)
[2018-09-26 22:01:26,484 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:01:26,488 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:01:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:01:28,162 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:01:28,162 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39
[2018-09-26 22:01:28,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states
[2018-09-26 22:01:28,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2018-09-26 22:01:28,163 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:01:28,163 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 40 states.
[2018-09-26 22:01:34,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:01:34,124 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions.
[2018-09-26 22:01:34,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2018-09-26 22:01:34,124 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 40
[2018-09-26 22:01:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:01:34,125 INFO L225 Difference]: With dead ends: 44
[2018-09-26 22:01:34,125 INFO L226 Difference]: Without dead ends: 42
[2018-09-26 22:01:34,125 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:01:34,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2018-09-26 22:01:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2018-09-26 22:01:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2018-09-26 22:01:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions.
[2018-09-26 22:01:34,129 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40
[2018-09-26 22:01:34,129 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:01:34,129 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions.
[2018-09-26 22:01:34,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states.
[2018-09-26 22:01:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions.
[2018-09-26 22:01:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2018-09-26 22:01:34,130 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:01:34,130 INFO L375 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1]
[2018-09-26 22:01:34,131 INFO L423 AbstractCegarLoop]: === Iteration 38 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:01:34,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:01:34,131 INFO L82 PathProgramCache]: Analyzing trace with hash 397594213, now seen corresponding path program 37 times
[2018-09-26 22:01:34,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:01:34,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:01:34,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:34,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:01:34,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:34,138 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:01:34,138 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:01:34,138 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:01:34,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:01:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 22:01:35,504 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:01:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:01:37,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:01:37,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40
[2018-09-26 22:01:37,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states
[2018-09-26 22:01:37,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2018-09-26 22:01:37,281 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:01:37,282 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 41 states.
[2018-09-26 22:01:43,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:01:43,556 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions.
[2018-09-26 22:01:43,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2018-09-26 22:01:43,557 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 41
[2018-09-26 22:01:43,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:01:43,558 INFO L225 Difference]: With dead ends: 45
[2018-09-26 22:01:43,558 INFO L226 Difference]: Without dead ends: 43
[2018-09-26 22:01:43,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:01:43,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-09-26 22:01:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2018-09-26 22:01:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2018-09-26 22:01:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions.
[2018-09-26 22:01:43,563 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 41
[2018-09-26 22:01:43,563 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:01:43,564 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions.
[2018-09-26 22:01:43,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states.
[2018-09-26 22:01:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions.
[2018-09-26 22:01:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2018-09-26 22:01:43,564 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:01:43,564 INFO L375 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1]
[2018-09-26 22:01:43,564 INFO L423 AbstractCegarLoop]: === Iteration 39 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:01:43,564 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:01:43,565 INFO L82 PathProgramCache]: Analyzing trace with hash -559483260, now seen corresponding path program 38 times
[2018-09-26 22:01:43,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:01:43,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:01:43,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:43,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:01:43,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:43,572 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:01:43,572 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:01:43,572 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:01:43,593 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 22:01:44,895 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 22:01:44,895 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:01:44,901 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:01:46,736 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:01:46,756 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:01:46,756 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41
[2018-09-26 22:01:46,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states
[2018-09-26 22:01:46,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2018-09-26 22:01:46,757 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:01:46,757 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 42 states.
[2018-09-26 22:01:53,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:01:53,365 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions.
[2018-09-26 22:01:53,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2018-09-26 22:01:53,365 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42
[2018-09-26 22:01:53,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:01:53,366 INFO L225 Difference]: With dead ends: 46
[2018-09-26 22:01:53,366 INFO L226 Difference]: Without dead ends: 44
[2018-09-26 22:01:53,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:01:53,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2018-09-26 22:01:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2018-09-26 22:01:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2018-09-26 22:01:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions.
[2018-09-26 22:01:53,372 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 42
[2018-09-26 22:01:53,372 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:01:53,372 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions.
[2018-09-26 22:01:53,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states.
[2018-09-26 22:01:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions.
[2018-09-26 22:01:53,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2018-09-26 22:01:53,373 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:01:53,373 INFO L375 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1]
[2018-09-26 22:01:53,373 INFO L423 AbstractCegarLoop]: === Iteration 40 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:01:53,373 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:01:53,373 INFO L82 PathProgramCache]: Analyzing trace with hash -164113851, now seen corresponding path program 39 times
[2018-09-26 22:01:53,373 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:01:53,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:01:53,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:53,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:01:53,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:01:53,380 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:01:53,381 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:01:53,381 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:01:53,399 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-26 22:01:54,452 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s)
[2018-09-26 22:01:54,452 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:01:54,457 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:01:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:01:56,423 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:01:56,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42
[2018-09-26 22:01:56,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states
[2018-09-26 22:01:56,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants.
[2018-09-26 22:01:56,424 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:01:56,424 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 43 states.
[2018-09-26 22:02:03,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:02:03,434 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions.
[2018-09-26 22:02:03,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2018-09-26 22:02:03,435 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 43
[2018-09-26 22:02:03,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:02:03,436 INFO L225 Difference]: With dead ends: 47
[2018-09-26 22:02:03,436 INFO L226 Difference]: Without dead ends: 45
[2018-09-26 22:02:03,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:02:03,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-09-26 22:02:03,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2018-09-26 22:02:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2018-09-26 22:02:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions.
[2018-09-26 22:02:03,440 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 43
[2018-09-26 22:02:03,440 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:02:03,440 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions.
[2018-09-26 22:02:03,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states.
[2018-09-26 22:02:03,440 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions.
[2018-09-26 22:02:03,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2018-09-26 22:02:03,440 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:02:03,440 INFO L375 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1]
[2018-09-26 22:02:03,441 INFO L423 AbstractCegarLoop]: === Iteration 41 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:02:03,441 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:02:03,441 INFO L82 PathProgramCache]: Analyzing trace with hash -792564060, now seen corresponding path program 40 times
[2018-09-26 22:02:03,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:02:03,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:02:03,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:03,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:02:03,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:03,449 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:02:03,449 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:02:03,449 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:02:03,462 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 22:02:04,795 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 22:02:04,795 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:02:04,802 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:02:06,823 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:02:06,844 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:02:06,844 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43
[2018-09-26 22:02:06,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states
[2018-09-26 22:02:06,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2018-09-26 22:02:06,845 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:02:06,845 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 44 states.
[2018-09-26 22:02:14,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:02:14,095 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions.
[2018-09-26 22:02:14,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2018-09-26 22:02:14,096 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 44
[2018-09-26 22:02:14,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:02:14,097 INFO L225 Difference]: With dead ends: 48
[2018-09-26 22:02:14,097 INFO L226 Difference]: Without dead ends: 46
[2018-09-26 22:02:14,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:02:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2018-09-26 22:02:14,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2018-09-26 22:02:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2018-09-26 22:02:14,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions.
[2018-09-26 22:02:14,101 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 44
[2018-09-26 22:02:14,101 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:02:14,101 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions.
[2018-09-26 22:02:14,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states.
[2018-09-26 22:02:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions.
[2018-09-26 22:02:14,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2018-09-26 22:02:14,102 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:02:14,102 INFO L375 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1]
[2018-09-26 22:02:14,102 INFO L423 AbstractCegarLoop]: === Iteration 42 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:02:14,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:02:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1200315941, now seen corresponding path program 41 times
[2018-09-26 22:02:14,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:02:14,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:02:14,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:14,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:02:14,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:14,108 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:02:14,109 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:02:14,109 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:02:14,124 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 22:02:15,624 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s)
[2018-09-26 22:02:15,625 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:02:15,635 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:02:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:02:17,820 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:02:17,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44
[2018-09-26 22:02:17,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states
[2018-09-26 22:02:17,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants.
[2018-09-26 22:02:17,821 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:02:17,821 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 45 states.
[2018-09-26 22:02:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:02:25,418 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions.
[2018-09-26 22:02:25,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2018-09-26 22:02:25,418 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 45
[2018-09-26 22:02:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:02:25,419 INFO L225 Difference]: With dead ends: 49
[2018-09-26 22:02:25,419 INFO L226 Difference]: Without dead ends: 47
[2018-09-26 22:02:25,420 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:02:25,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-09-26 22:02:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2018-09-26 22:02:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2018-09-26 22:02:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions.
[2018-09-26 22:02:25,424 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 45
[2018-09-26 22:02:25,424 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:02:25,425 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions.
[2018-09-26 22:02:25,425 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states.
[2018-09-26 22:02:25,425 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions.
[2018-09-26 22:02:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2018-09-26 22:02:25,425 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:02:25,425 INFO L375 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1]
[2018-09-26 22:02:25,426 INFO L423 AbstractCegarLoop]: === Iteration 43 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:02:25,426 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:02:25,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1444913468, now seen corresponding path program 42 times
[2018-09-26 22:02:25,426 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:02:25,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:02:25,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:25,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:02:25,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:25,433 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:02:25,433 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:02:25,433 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:02:25,449 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-26 22:02:27,211 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s)
[2018-09-26 22:02:27,211 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:02:27,216 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:02:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:02:29,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:02:29,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45
[2018-09-26 22:02:29,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states
[2018-09-26 22:02:29,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2018-09-26 22:02:29,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:02:29,482 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 46 states.
[2018-09-26 22:02:37,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:02:37,470 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions.
[2018-09-26 22:02:37,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2018-09-26 22:02:37,471 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46
[2018-09-26 22:02:37,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:02:37,472 INFO L225 Difference]: With dead ends: 50
[2018-09-26 22:02:37,472 INFO L226 Difference]: Without dead ends: 48
[2018-09-26 22:02:37,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:02:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2018-09-26 22:02:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2018-09-26 22:02:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2018-09-26 22:02:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions.
[2018-09-26 22:02:37,478 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 46
[2018-09-26 22:02:37,478 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:02:37,478 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions.
[2018-09-26 22:02:37,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states.
[2018-09-26 22:02:37,478 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions.
[2018-09-26 22:02:37,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2018-09-26 22:02:37,479 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:02:37,479 INFO L375 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1]
[2018-09-26 22:02:37,479 INFO L423 AbstractCegarLoop]: === Iteration 44 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:02:37,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:02:37,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1842646523, now seen corresponding path program 43 times
[2018-09-26 22:02:37,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:02:37,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:02:37,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:37,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:02:37,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:37,486 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:02:37,486 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:02:37,486 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:02:37,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:02:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-26 22:02:39,084 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:02:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:02:41,472 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:02:41,473 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46
[2018-09-26 22:02:41,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states
[2018-09-26 22:02:41,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants.
[2018-09-26 22:02:41,473 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:02:41,473 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 47 states.
[2018-09-26 22:02:49,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:02:49,736 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions.
[2018-09-26 22:02:49,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2018-09-26 22:02:49,736 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 47
[2018-09-26 22:02:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:02:49,737 INFO L225 Difference]: With dead ends: 51
[2018-09-26 22:02:49,737 INFO L226 Difference]: Without dead ends: 49
[2018-09-26 22:02:49,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:02:49,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-09-26 22:02:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2018-09-26 22:02:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2018-09-26 22:02:49,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions.
[2018-09-26 22:02:49,741 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 47
[2018-09-26 22:02:49,741 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:02:49,741 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions.
[2018-09-26 22:02:49,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states.
[2018-09-26 22:02:49,742 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions.
[2018-09-26 22:02:49,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2018-09-26 22:02:49,742 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:02:49,742 INFO L375 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1]
[2018-09-26 22:02:49,742 INFO L423 AbstractCegarLoop]: === Iteration 45 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:02:49,742 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:02:49,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1287469340, now seen corresponding path program 44 times
[2018-09-26 22:02:49,743 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:02:49,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:02:49,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:49,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-26 22:02:49,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:02:49,750 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:02:49,750 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:02:49,750 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:02:49,766 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-26 22:02:51,445 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-26 22:02:51,446 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:02:51,455 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:02:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:02:53,955 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:02:53,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47
[2018-09-26 22:02:53,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states
[2018-09-26 22:02:53,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2018-09-26 22:02:53,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:02:53,956 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 48 states.
[2018-09-26 22:03:02,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:03:02,575 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions.
[2018-09-26 22:03:02,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2018-09-26 22:03:02,575 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 48
[2018-09-26 22:03:02,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:03:02,576 INFO L225 Difference]: With dead ends: 52
[2018-09-26 22:03:02,576 INFO L226 Difference]: Without dead ends: 50
[2018-09-26 22:03:02,576 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:03:02,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2018-09-26 22:03:02,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2018-09-26 22:03:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2018-09-26 22:03:02,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions.
[2018-09-26 22:03:02,580 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 48
[2018-09-26 22:03:02,580 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:03:02,580 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions.
[2018-09-26 22:03:02,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states.
[2018-09-26 22:03:02,581 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions.
[2018-09-26 22:03:02,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2018-09-26 22:03:02,581 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:03:02,581 INFO L375 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1]
[2018-09-26 22:03:02,581 INFO L423 AbstractCegarLoop]: === Iteration 46 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:03:02,582 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:03:02,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1256845851, now seen corresponding path program 45 times
[2018-09-26 22:03:02,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:03:02,582 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:03:02,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:03:02,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:03:02,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:03:02,589 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:03:02,589 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:03:02,589 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:03:02,598 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-26 22:03:04,699 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s)
[2018-09-26 22:03:04,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:03:04,704 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:03:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:03:07,386 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:03:07,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48
[2018-09-26 22:03:07,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states
[2018-09-26 22:03:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants.
[2018-09-26 22:03:07,387 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:03:07,387 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 49 states.
[2018-09-26 22:03:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:03:16,316 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions.
[2018-09-26 22:03:16,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2018-09-26 22:03:16,316 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 49
[2018-09-26 22:03:16,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:03:16,317 INFO L225 Difference]: With dead ends: 53
[2018-09-26 22:03:16,317 INFO L226 Difference]: Without dead ends: 51
[2018-09-26 22:03:16,318 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:03:16,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-09-26 22:03:16,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2018-09-26 22:03:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2018-09-26 22:03:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions.
[2018-09-26 22:03:16,322 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 49
[2018-09-26 22:03:16,322 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:03:16,322 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions.
[2018-09-26 22:03:16,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states.
[2018-09-26 22:03:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions.
[2018-09-26 22:03:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2018-09-26 22:03:16,322 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:03:16,322 INFO L375 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1]
[2018-09-26 22:03:16,323 INFO L423 AbstractCegarLoop]: === Iteration 47 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:03:16,323 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:03:16,323 INFO L82 PathProgramCache]: Analyzing trace with hash -307517692, now seen corresponding path program 46 times
[2018-09-26 22:03:16,323 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:03:16,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:03:16,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:03:16,324 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:03:16,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:03:16,329 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:03:16,329 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:03:16,329 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:03:16,344 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-26 22:03:18,667 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-26 22:03:18,668 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:03:18,677 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:03:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:03:21,457 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:03:21,457 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49
[2018-09-26 22:03:21,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states
[2018-09-26 22:03:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2018-09-26 22:03:21,458 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:03:21,458 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 50 states.
[2018-09-26 22:03:30,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-26 22:03:30,774 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions.
[2018-09-26 22:03:30,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2018-09-26 22:03:30,774 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50
[2018-09-26 22:03:30,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-26 22:03:30,775 INFO L225 Difference]: With dead ends: 54
[2018-09-26 22:03:30,775 INFO L226 Difference]: Without dead ends: 52
[2018-09-26 22:03:30,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-26 22:03:30,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2018-09-26 22:03:30,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2018-09-26 22:03:30,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2018-09-26 22:03:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions.
[2018-09-26 22:03:30,780 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 50
[2018-09-26 22:03:30,780 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-26 22:03:30,781 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions.
[2018-09-26 22:03:30,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states.
[2018-09-26 22:03:30,781 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions.
[2018-09-26 22:03:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2018-09-26 22:03:30,781 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-26 22:03:30,781 INFO L375 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1]
[2018-09-26 22:03:30,781 INFO L423 AbstractCegarLoop]: === Iteration 48 === [multErr0ENSURES_VIOLATIONPOST_CONDITION]===
[2018-09-26 22:03:30,781 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-26 22:03:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash -943115835, now seen corresponding path program 47 times
[2018-09-26 22:03:30,782 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-26 22:03:30,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-26 22:03:30,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:03:30,782 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-26 22:03:30,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-26 22:03:30,788 ERROR L236 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic
[2018-09-26 22:03:30,788 INFO L259 seRefinementStrategy]: Advancing trace checker
[2018-09-26 22:03:30,788 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 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-09-26 22:03:30,805 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-26 22:03:33,552 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s)
[2018-09-26 22:03:33,552 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-26 22:03:33,563 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-26 22:03:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-26 22:03:36,422 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2018-09-26 22:03:36,423 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50
[2018-09-26 22:03:36,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states
[2018-09-26 22:03:36,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants.
[2018-09-26 22:03:36,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-26 22:03:36,423 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 51 states.
Received shutdown request...
[2018-09-26 22:03:43,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2018-09-26 22:03:43,022 WARN L549 AbstractCegarLoop]: Verification canceled
[2018-09-26 22:03:43,028 WARN L206 ceAbstractionStarter]: Timeout
[2018-09-26 22:03:43,028 INFO L202 PluginConnector]: Adding new model Mult1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 10:03:43 BoogieIcfgContainer
[2018-09-26 22:03:43,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-09-26 22:03:43,029 INFO L168 Benchmark]: Toolchain (without parser) took 257367.62 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -265.3 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 238.7 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2018-09-26 22:03:43,030 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.
[2018-09-26 22:03:43,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.25 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.
[2018-09-26 22:03:43,032 INFO L168 Benchmark]: Boogie Preprocessor took 27.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-09-26 22:03:43,032 INFO L168 Benchmark]: RCFGBuilder took 293.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
[2018-09-26 22:03:43,033 INFO L168 Benchmark]: TraceAbstraction took 256994.17 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -265.3 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 217.6 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2018-09-26 22:03:43,036 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 46.25 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 Preprocessor took 27.16 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 293.09 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 256994.17 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -265.3 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 217.6 MB). There was no memory consumed. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 9]: Timeout (TraceAbstraction)
Unable to prove that procedure postcondition always holds (line 9). Cancelled while BasicCegarLoop was constructing difference of abstraction (52states) and FLOYD_HOARE automaton (currently 37 states, 51 states before enhancement), while ReachableStatesComputation was computing reachable states (36 states constructedinput type IntersectNwa).
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 256.9s OverallTime, 48 OverallIterations, 47 TraceHistogramMax, 172.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 141 SDtfs, 54 SDslu, 47 SDs, 0 SdLazy, 43316 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1319 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 47 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 27.6s SatisfiabilityAnalysisTime, 53.8s InterpolantComputationTime, 1320 NumberOfCodeBlocks, 1320 NumberOfCodeBlocksAsserted, 348 NumberOfCheckSat, 1272 ConstructedInterpolants, 0 QuantifiedInterpolants, 456854 SizeOfPredicates, 48 NumberOfNonLiveVariables, 6072 ConjunctsInSsa, 4800 ConjunctsInUnsatCore, 48 InterpolantComputations, 1 PerfectInterpolantSequences, 0/18424 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/Mult1-Safe.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_22-03-43-047.csv
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Mult1-Safe.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_22-03-43-047.csv
Completed graceful shutdown