java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:58:01,231 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:58:01,233 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:58:01,247 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:58:01,247 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:58:01,248 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:58:01,250 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:58:01,253 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:58:01,255 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:58:01,258 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:58:01,259 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:58:01,288 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 [2018-09-30 10:58:01,308 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:58:01,308 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:58:01,309 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:58:01,309 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:58:01,310 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:58:01,310 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:58:01,310 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:58:01,310 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:58:01,310 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:58:01,311 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:58:01,311 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:58:01,311 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:58:01,311 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:58:01,311 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:58:01,311 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:58:01,312 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:58:01,312 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:58:01,312 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:58:01,312 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:58:01,312 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:58:01,313 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:58:01,313 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:58:01,313 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:58:01,313 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:58:01,313 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:58:01,314 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:58:01,314 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:58:01,314 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:58:01,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:58:01,314 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:58:01,314 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:58:01,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:58:01,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:58:01,373 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:58:01,375 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:58:01,376 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:58:01,376 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-09-30 10:58:01,377 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-09-30 10:58:01,427 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:58:01,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:58:01,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:58:01,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:58:01,432 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:58:01,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,473 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-30 10:58:01,474 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-30 10:58:01,474 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-30 10:58:01,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:58:01,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:58:01,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:58:01,477 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:58:01,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... [2018-09-30 10:58:01,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:58:01,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:58:01,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:58:01,501 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:58:01,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:58:01,575 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-09-30 10:58:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-30 10:58:01,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-30 10:58:01,814 INFO L345 CfgBuilder]: Using library mode [2018-09-30 10:58:01,814 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:58:01 BoogieIcfgContainer [2018-09-30 10:58:01,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:58:01,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:58:01,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:58:01,819 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:58:01,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:58:01" (1/2) ... [2018-09-30 10:58:01,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@440fbfbf and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:58:01, skipping insertion in model container [2018-09-30 10:58:01,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:58:01" (2/2) ... [2018-09-30 10:58:01,823 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-09-30 10:58:01,833 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:58:01,842 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:58:01,894 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:58:01,895 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:58:01,895 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:58:01,895 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:58:01,895 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:58:01,895 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:58:01,896 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:58:01,896 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:58:01,896 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:58:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-09-30 10:58:01,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:58:01,929 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:01,931 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 10:58:01,935 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:01,945 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:01,946 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-09-30 10:58:01,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:01,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:02,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:02,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:02,166 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:58:02,166 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:58:02,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:58:02,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:58:02,208 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:02,211 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-09-30 10:58:02,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:02,336 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-09-30 10:58:02,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:58:02,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 10:58:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:02,350 INFO L225 Difference]: With dead ends: 22 [2018-09-30 10:58:02,350 INFO L226 Difference]: Without dead ends: 10 [2018-09-30 10:58:02,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-09-30 10:58:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-09-30 10:58:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-09-30 10:58:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-09-30 10:58:02,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-09-30 10:58:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:02,389 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-09-30 10:58:02,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:58:02,389 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-09-30 10:58:02,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:58:02,389 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:02,390 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 10:58:02,390 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:02,390 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:02,390 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-09-30 10:58:02,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:02,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:02,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:02,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:02,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:02,436 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:58:02,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:58:02,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:58:02,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:58:02,438 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:02,438 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-09-30 10:58:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:02,472 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-30 10:58:02,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:58:02,472 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 10:58:02,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:02,473 INFO L225 Difference]: With dead ends: 13 [2018-09-30 10:58:02,473 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 10:58:02,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 10:58:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 10:58:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 10:58:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-30 10:58:02,477 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-09-30 10:58:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:02,478 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-30 10:58:02,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:58:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-30 10:58:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 10:58:02,479 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:02,479 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:02,479 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:02,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:02,479 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-09-30 10:58:02,480 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:02,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:02,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:02,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:02,551 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:02,551 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:02,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:02,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:02,728 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:02,729 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:58:02,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:58:02,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:58:02,730 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:02,730 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-09-30 10:58:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:02,852 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-30 10:58:02,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:58:02,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-09-30 10:58:02,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:02,854 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:58:02,854 INFO L226 Difference]: Without dead ends: 15 [2018-09-30 10:58:02,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-30 10:58:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-30 10:58:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 10:58:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-30 10:58:02,858 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-09-30 10:58:02,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:02,858 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-30 10:58:02,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:58:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-30 10:58:02,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:58:02,859 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:02,860 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:02,860 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:02,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:02,860 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-09-30 10:58:02,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:02,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:02,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:02,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:03,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:03,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:03,058 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:03,100 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:03,100 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:03,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:03,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:03,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-09-30 10:58:03,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:58:03,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:58:03,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:03,230 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-09-30 10:58:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:03,322 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-30 10:58:03,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:58:03,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-09-30 10:58:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:03,325 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:58:03,325 INFO L226 Difference]: Without dead ends: 19 [2018-09-30 10:58:03,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:03,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-30 10:58:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-30 10:58:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-30 10:58:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-30 10:58:03,329 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-09-30 10:58:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:03,329 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-30 10:58:03,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:58:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-30 10:58:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-30 10:58:03,330 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:03,330 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:03,331 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:03,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-09-30 10:58:03,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:03,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:03,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:03,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:03,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:03,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:03,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:03,433 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:03,465 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-30 10:58:03,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:03,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:03,653 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:03,653 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-09-30 10:58:03,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-30 10:58:03,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-30 10:58:03,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:03,654 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-09-30 10:58:03,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:03,725 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-30 10:58:03,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-30 10:58:03,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-09-30 10:58:03,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:03,726 INFO L225 Difference]: With dead ends: 25 [2018-09-30 10:58:03,727 INFO L226 Difference]: Without dead ends: 23 [2018-09-30 10:58:03,727 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:03,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-09-30 10:58:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-09-30 10:58:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-09-30 10:58:03,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-09-30 10:58:03,732 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-09-30 10:58:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:03,732 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-09-30 10:58:03,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-30 10:58:03,732 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-09-30 10:58:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-30 10:58:03,733 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:03,733 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:03,734 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:03,734 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:03,734 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-09-30 10:58:03,734 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:03,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:03,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:03,736 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:03,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:03,811 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:03,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:03,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:03,820 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:03,831 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:03,832 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:03,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:03,957 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:03,982 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:03,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-09-30 10:58:03,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 10:58:03,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 10:58:03,984 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:03,984 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-09-30 10:58:04,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:04,264 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-09-30 10:58:04,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:58:04,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-09-30 10:58:04,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:04,266 INFO L225 Difference]: With dead ends: 29 [2018-09-30 10:58:04,266 INFO L226 Difference]: Without dead ends: 27 [2018-09-30 10:58:04,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-30 10:58:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-09-30 10:58:04,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-09-30 10:58:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-09-30 10:58:04,273 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-09-30 10:58:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:04,274 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-09-30 10:58:04,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 10:58:04,274 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-09-30 10:58:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-30 10:58:04,275 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:04,278 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:04,279 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:04,279 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:04,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-09-30 10:58:04,280 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:04,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:04,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:04,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:04,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:04,518 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:04,518 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:04,534 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:04,570 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-30 10:58:04,571 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:04,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:04,797 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:04,818 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:04,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-09-30 10:58:04,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:58:04,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:58:04,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:04,819 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-09-30 10:58:04,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:04,886 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-09-30 10:58:04,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 10:58:04,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-09-30 10:58:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:04,888 INFO L225 Difference]: With dead ends: 33 [2018-09-30 10:58:04,888 INFO L226 Difference]: Without dead ends: 31 [2018-09-30 10:58:04,889 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-30 10:58:04,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-30 10:58:04,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-30 10:58:04,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-09-30 10:58:04,894 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-09-30 10:58:04,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:04,894 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-09-30 10:58:04,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:58:04,894 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-09-30 10:58:04,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-30 10:58:04,895 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:04,896 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:04,896 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:04,896 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:04,896 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-09-30 10:58:04,896 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:04,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:04,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:04,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:04,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:04,978 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:04,978 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:04,989 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:05,039 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-30 10:58:05,039 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:05,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:05,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:05,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-09-30 10:58:05,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-30 10:58:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-30 10:58:05,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:05,283 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-09-30 10:58:05,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:05,387 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-09-30 10:58:05,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 10:58:05,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-09-30 10:58:05,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:05,389 INFO L225 Difference]: With dead ends: 37 [2018-09-30 10:58:05,389 INFO L226 Difference]: Without dead ends: 35 [2018-09-30 10:58:05,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:05,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-30 10:58:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-09-30 10:58:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-30 10:58:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-09-30 10:58:05,397 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-09-30 10:58:05,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:05,397 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-09-30 10:58:05,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-30 10:58:05,398 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-09-30 10:58:05,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-30 10:58:05,398 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:05,399 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:05,399 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:05,399 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:05,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-09-30 10:58:05,399 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:05,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:05,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:05,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:05,534 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:05,534 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:05,535 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:05,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:05,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:05,706 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:05,726 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:05,727 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-09-30 10:58:05,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 10:58:05,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 10:58:05,728 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:05,728 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-09-30 10:58:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:05,857 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-09-30 10:58:05,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 10:58:05,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-09-30 10:58:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:05,859 INFO L225 Difference]: With dead ends: 41 [2018-09-30 10:58:05,859 INFO L226 Difference]: Without dead ends: 39 [2018-09-30 10:58:05,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:05,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-30 10:58:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-09-30 10:58:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-30 10:58:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-09-30 10:58:05,864 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-09-30 10:58:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:05,865 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-09-30 10:58:05,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 10:58:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-09-30 10:58:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-30 10:58:05,866 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:05,866 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:05,867 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:05,867 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:05,867 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-09-30 10:58:05,867 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:05,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:05,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:05,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:05,961 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:05,961 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:05,974 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:05,988 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:05,988 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:05,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:06,108 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:06,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-09-30 10:58:06,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-30 10:58:06,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-30 10:58:06,109 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:06,109 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-09-30 10:58:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:06,181 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-09-30 10:58:06,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 10:58:06,182 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-09-30 10:58:06,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:06,183 INFO L225 Difference]: With dead ends: 45 [2018-09-30 10:58:06,183 INFO L226 Difference]: Without dead ends: 43 [2018-09-30 10:58:06,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-09-30 10:58:06,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-09-30 10:58:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-09-30 10:58:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-09-30 10:58:06,188 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-09-30 10:58:06,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:06,188 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-09-30 10:58:06,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-30 10:58:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-09-30 10:58:06,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-30 10:58:06,190 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:06,190 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:06,190 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:06,190 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:06,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-09-30 10:58:06,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:06,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:06,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:06,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:06,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:06,322 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:06,323 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:06,330 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:06,361 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-09-30 10:58:06,361 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:06,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:06,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:06,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-09-30 10:58:06,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 10:58:06,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 10:58:06,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:06,550 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-09-30 10:58:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:06,795 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-09-30 10:58:06,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 10:58:06,795 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-09-30 10:58:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:06,798 INFO L225 Difference]: With dead ends: 49 [2018-09-30 10:58:06,798 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 10:58:06,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 10:58:06,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 10:58:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 10:58:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-09-30 10:58:06,803 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-09-30 10:58:06,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:06,803 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-09-30 10:58:06,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 10:58:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-09-30 10:58:06,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 10:58:06,805 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:06,805 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:06,805 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:06,805 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:06,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-09-30 10:58:06,806 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:06,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:06,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:06,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:06,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:06,932 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:06,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:06,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:06,940 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:06,955 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:06,955 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:06,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:07,067 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:07,087 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:07,087 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-09-30 10:58:07,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 10:58:07,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 10:58:07,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:07,088 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-09-30 10:58:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:07,215 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-09-30 10:58:07,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 10:58:07,217 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-09-30 10:58:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:07,218 INFO L225 Difference]: With dead ends: 53 [2018-09-30 10:58:07,218 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 10:58:07,219 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 10:58:07,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-30 10:58:07,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-30 10:58:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-09-30 10:58:07,223 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-09-30 10:58:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:07,224 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-09-30 10:58:07,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 10:58:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-09-30 10:58:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-30 10:58:07,225 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:07,225 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:07,225 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:07,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:07,226 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-09-30 10:58:07,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:07,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:07,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:07,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:07,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:07,381 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:07,381 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:07,390 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:07,407 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-09-30 10:58:07,407 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:07,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:07,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:07,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-09-30 10:58:07,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 10:58:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 10:58:07,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:07,630 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-09-30 10:58:07,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:07,769 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-09-30 10:58:07,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 10:58:07,770 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-09-30 10:58:07,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:07,771 INFO L225 Difference]: With dead ends: 57 [2018-09-30 10:58:07,771 INFO L226 Difference]: Without dead ends: 55 [2018-09-30 10:58:07,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-30 10:58:07,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-09-30 10:58:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-30 10:58:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-09-30 10:58:07,777 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-09-30 10:58:07,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:07,778 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-09-30 10:58:07,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 10:58:07,778 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-09-30 10:58:07,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-30 10:58:07,779 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:07,779 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:07,779 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:07,780 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-09-30 10:58:07,780 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:07,780 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:07,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:07,781 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:07,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:07,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:07,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:07,932 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:08,090 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-09-30 10:58:08,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:08,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:08,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:08,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-09-30 10:58:08,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 10:58:08,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 10:58:08,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:08,485 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-09-30 10:58:08,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:08,575 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-09-30 10:58:08,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-30 10:58:08,576 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-09-30 10:58:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:08,577 INFO L225 Difference]: With dead ends: 61 [2018-09-30 10:58:08,577 INFO L226 Difference]: Without dead ends: 59 [2018-09-30 10:58:08,578 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-09-30 10:58:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-09-30 10:58:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-09-30 10:58:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-09-30 10:58:08,583 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-09-30 10:58:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:08,584 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-09-30 10:58:08,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 10:58:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-09-30 10:58:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-30 10:58:08,585 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:08,585 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:08,585 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:08,585 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-09-30 10:58:08,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:08,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:08,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:08,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:08,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:08,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:08,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:08,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:08,755 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:09,930 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:09,953 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:09,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-09-30 10:58:09,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 10:58:09,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 10:58:09,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:09,954 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-09-30 10:58:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:10,042 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-09-30 10:58:10,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-30 10:58:10,043 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-09-30 10:58:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:10,044 INFO L225 Difference]: With dead ends: 65 [2018-09-30 10:58:10,044 INFO L226 Difference]: Without dead ends: 63 [2018-09-30 10:58:10,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:10,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-30 10:58:10,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-30 10:58:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-30 10:58:10,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-09-30 10:58:10,050 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-09-30 10:58:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:10,051 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-09-30 10:58:10,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 10:58:10,051 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-09-30 10:58:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-30 10:58:10,052 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:10,052 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:10,052 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:10,052 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:10,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-09-30 10:58:10,053 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:10,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:10,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:10,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:10,253 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:10,253 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:10,261 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:10,299 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:10,300 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:10,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:10,618 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:10,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:10,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-09-30 10:58:10,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-30 10:58:10,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-30 10:58:10,639 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:10,640 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-09-30 10:58:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:10,773 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-09-30 10:58:10,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-30 10:58:10,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-09-30 10:58:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:10,774 INFO L225 Difference]: With dead ends: 69 [2018-09-30 10:58:10,774 INFO L226 Difference]: Without dead ends: 67 [2018-09-30 10:58:10,775 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-30 10:58:10,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-30 10:58:10,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-30 10:58:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-09-30 10:58:10,782 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-09-30 10:58:10,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:10,782 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-09-30 10:58:10,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-30 10:58:10,783 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-09-30 10:58:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-09-30 10:58:10,784 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:10,784 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:10,785 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:10,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:10,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-09-30 10:58:10,785 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:10,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:10,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:10,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:11,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:11,059 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:11,066 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:11,127 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-09-30 10:58:11,127 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:11,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:11,474 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:11,474 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-09-30 10:58:11,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 10:58:11,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 10:58:11,475 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:11,475 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-09-30 10:58:11,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:11,595 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-09-30 10:58:11,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-09-30 10:58:11,595 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-09-30 10:58:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:11,596 INFO L225 Difference]: With dead ends: 73 [2018-09-30 10:58:11,597 INFO L226 Difference]: Without dead ends: 71 [2018-09-30 10:58:11,597 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-09-30 10:58:11,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-09-30 10:58:11,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-09-30 10:58:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-09-30 10:58:11,602 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-09-30 10:58:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:11,603 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-09-30 10:58:11,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 10:58:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-09-30 10:58:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-09-30 10:58:11,604 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:11,604 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:11,604 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:11,605 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:11,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-09-30 10:58:11,605 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:11,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:11,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:11,606 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:11,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:11,754 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:11,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:11,754 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:11,762 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:11,778 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:11,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:11,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:12,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:12,379 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-09-30 10:58:12,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 10:58:12,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 10:58:12,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:12,380 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-09-30 10:58:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:12,518 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-09-30 10:58:12,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-30 10:58:12,519 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-09-30 10:58:12,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:12,519 INFO L225 Difference]: With dead ends: 77 [2018-09-30 10:58:12,519 INFO L226 Difference]: Without dead ends: 75 [2018-09-30 10:58:12,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-09-30 10:58:12,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-09-30 10:58:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-09-30 10:58:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-09-30 10:58:12,524 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-09-30 10:58:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:12,524 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-09-30 10:58:12,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 10:58:12,524 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-09-30 10:58:12,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-09-30 10:58:12,525 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:12,525 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:12,526 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:12,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:12,526 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-09-30 10:58:12,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:12,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:12,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:12,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:12,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:12,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:12,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:12,938 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:12,966 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-09-30 10:58:12,966 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:12,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:13,126 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:13,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-09-30 10:58:13,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 10:58:13,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 10:58:13,127 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:13,127 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-09-30 10:58:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:13,276 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-09-30 10:58:13,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-30 10:58:13,277 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-09-30 10:58:13,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:13,278 INFO L225 Difference]: With dead ends: 81 [2018-09-30 10:58:13,278 INFO L226 Difference]: Without dead ends: 79 [2018-09-30 10:58:13,279 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:13,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-09-30 10:58:13,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-09-30 10:58:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-30 10:58:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-09-30 10:58:13,283 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-09-30 10:58:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:13,284 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-09-30 10:58:13,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 10:58:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-09-30 10:58:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-09-30 10:58:13,285 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:13,285 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:13,285 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:13,285 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:13,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-09-30 10:58:13,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:13,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:13,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:13,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:13,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:13,458 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:13,458 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:13,465 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:13,491 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-09-30 10:58:13,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:13,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:13,673 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:13,673 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-09-30 10:58:13,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 10:58:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 10:58:13,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:13,674 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-09-30 10:58:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:13,791 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-09-30 10:58:13,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-09-30 10:58:13,792 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-09-30 10:58:13,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:13,793 INFO L225 Difference]: With dead ends: 85 [2018-09-30 10:58:13,793 INFO L226 Difference]: Without dead ends: 83 [2018-09-30 10:58:13,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:13,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-09-30 10:58:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-09-30 10:58:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-09-30 10:58:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-09-30 10:58:13,798 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-09-30 10:58:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:13,798 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-09-30 10:58:13,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 10:58:13,799 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-09-30 10:58:13,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-09-30 10:58:13,799 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:13,800 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:13,800 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:13,800 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:13,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-09-30 10:58:13,800 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:13,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:13,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:13,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:13,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:14,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:14,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:14,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:14,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:14,460 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:14,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-09-30 10:58:14,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 10:58:14,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 10:58:14,461 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:14,462 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-09-30 10:58:14,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:14,587 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-09-30 10:58:14,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 10:58:14,588 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-09-30 10:58:14,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:14,588 INFO L225 Difference]: With dead ends: 89 [2018-09-30 10:58:14,588 INFO L226 Difference]: Without dead ends: 87 [2018-09-30 10:58:14,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-09-30 10:58:14,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-09-30 10:58:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-09-30 10:58:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-09-30 10:58:14,593 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-09-30 10:58:14,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:14,593 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-09-30 10:58:14,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 10:58:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-09-30 10:58:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-09-30 10:58:14,594 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:14,594 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:14,594 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:14,595 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:14,595 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-09-30 10:58:14,595 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:14,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:14,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:14,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:14,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:14,779 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:14,779 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:14,787 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:14,817 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:14,818 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:14,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:15,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:15,059 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-09-30 10:58:15,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 10:58:15,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 10:58:15,059 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:15,059 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-09-30 10:58:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:15,140 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-09-30 10:58:15,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-09-30 10:58:15,142 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-09-30 10:58:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:15,143 INFO L225 Difference]: With dead ends: 93 [2018-09-30 10:58:15,143 INFO L226 Difference]: Without dead ends: 91 [2018-09-30 10:58:15,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:15,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-09-30 10:58:15,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-09-30 10:58:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-09-30 10:58:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-09-30 10:58:15,147 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-09-30 10:58:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:15,147 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-09-30 10:58:15,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 10:58:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-09-30 10:58:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-09-30 10:58:15,148 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:15,148 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:15,149 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:15,149 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-09-30 10:58:15,149 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:15,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:15,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:15,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:15,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:15,340 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:15,340 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:15,347 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:15,383 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-09-30 10:58:15,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:15,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:15,700 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:15,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:15,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-09-30 10:58:15,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-30 10:58:15,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-30 10:58:15,721 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:15,721 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-09-30 10:58:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:15,877 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-09-30 10:58:15,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-09-30 10:58:15,878 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-09-30 10:58:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:15,879 INFO L225 Difference]: With dead ends: 97 [2018-09-30 10:58:15,879 INFO L226 Difference]: Without dead ends: 95 [2018-09-30 10:58:15,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-09-30 10:58:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-09-30 10:58:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-09-30 10:58:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-09-30 10:58:15,883 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-09-30 10:58:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:15,883 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-09-30 10:58:15,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-30 10:58:15,883 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-09-30 10:58:15,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-09-30 10:58:15,884 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:15,884 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:15,884 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:15,884 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:15,884 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-09-30 10:58:15,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:15,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:15,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:15,886 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:15,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:16,834 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:16,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:16,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:16,849 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:16,888 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:16,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:16,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:17,163 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:17,163 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-09-30 10:58:17,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-09-30 10:58:17,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-09-30 10:58:17,164 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:17,164 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-09-30 10:58:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:17,547 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-09-30 10:58:17,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-09-30 10:58:17,548 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-09-30 10:58:17,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:17,549 INFO L225 Difference]: With dead ends: 101 [2018-09-30 10:58:17,549 INFO L226 Difference]: Without dead ends: 99 [2018-09-30 10:58:17,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-09-30 10:58:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-09-30 10:58:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-09-30 10:58:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-09-30 10:58:17,553 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-09-30 10:58:17,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:17,553 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-09-30 10:58:17,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-09-30 10:58:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-09-30 10:58:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-09-30 10:58:17,554 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:17,554 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:17,555 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:17,555 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:17,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-09-30 10:58:17,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:17,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:17,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:17,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:17,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:17,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:17,920 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:17,931 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:17,965 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-09-30 10:58:17,966 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:17,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:18,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:18,342 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-09-30 10:58:18,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-09-30 10:58:18,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-09-30 10:58:18,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:18,343 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-09-30 10:58:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:18,747 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-09-30 10:58:18,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-09-30 10:58:18,749 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-09-30 10:58:18,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:18,750 INFO L225 Difference]: With dead ends: 105 [2018-09-30 10:58:18,750 INFO L226 Difference]: Without dead ends: 103 [2018-09-30 10:58:18,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-09-30 10:58:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-09-30 10:58:18,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-09-30 10:58:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-09-30 10:58:18,752 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-09-30 10:58:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:18,753 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-09-30 10:58:18,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-09-30 10:58:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-09-30 10:58:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-09-30 10:58:18,754 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:18,754 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:18,754 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:18,754 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:18,754 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-09-30 10:58:18,754 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:18,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:18,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:18,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:18,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:19,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:19,705 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:19,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:19,713 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:19,742 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-09-30 10:58:19,742 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:19,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:19,967 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:19,967 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-09-30 10:58:19,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-09-30 10:58:19,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-09-30 10:58:19,968 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:19,968 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-09-30 10:58:20,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:20,094 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-09-30 10:58:20,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-30 10:58:20,094 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-09-30 10:58:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:20,095 INFO L225 Difference]: With dead ends: 109 [2018-09-30 10:58:20,096 INFO L226 Difference]: Without dead ends: 107 [2018-09-30 10:58:20,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:20,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-09-30 10:58:20,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-09-30 10:58:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-09-30 10:58:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-09-30 10:58:20,100 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-09-30 10:58:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:20,100 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-09-30 10:58:20,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-09-30 10:58:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-09-30 10:58:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-09-30 10:58:20,101 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:20,101 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:20,101 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:20,101 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-09-30 10:58:20,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:20,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:20,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:20,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:20,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:20,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:20,413 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:20,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:20,459 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:20,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:20,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-09-30 10:58:20,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-09-30 10:58:20,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-09-30 10:58:20,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:20,709 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-09-30 10:58:20,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:20,891 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-09-30 10:58:20,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-09-30 10:58:20,891 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-09-30 10:58:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:20,893 INFO L225 Difference]: With dead ends: 113 [2018-09-30 10:58:20,893 INFO L226 Difference]: Without dead ends: 111 [2018-09-30 10:58:20,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:20,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-09-30 10:58:20,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-09-30 10:58:20,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-09-30 10:58:20,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-09-30 10:58:20,897 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-09-30 10:58:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:20,897 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-09-30 10:58:20,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-09-30 10:58:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-09-30 10:58:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-09-30 10:58:20,898 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:20,898 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:20,898 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:20,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:20,898 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-09-30 10:58:20,899 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:20,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:20,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:20,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:20,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:21,624 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:21,625 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:21,632 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:21,656 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:21,656 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:21,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:21,833 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:21,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-09-30 10:58:21,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-09-30 10:58:21,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-09-30 10:58:21,834 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:21,834 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-09-30 10:58:22,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:22,092 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-09-30 10:58:22,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-09-30 10:58:22,093 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-09-30 10:58:22,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:22,094 INFO L225 Difference]: With dead ends: 117 [2018-09-30 10:58:22,094 INFO L226 Difference]: Without dead ends: 115 [2018-09-30 10:58:22,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:22,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-09-30 10:58:22,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-09-30 10:58:22,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-09-30 10:58:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-09-30 10:58:22,097 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-09-30 10:58:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:22,098 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-09-30 10:58:22,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-09-30 10:58:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-09-30 10:58:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-30 10:58:22,098 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:22,098 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:22,098 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:22,099 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:22,099 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-09-30 10:58:22,099 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:22,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:22,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:22,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:22,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:22,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:22,861 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:22,861 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:22,868 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:22,902 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-09-30 10:58:22,902 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:22,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:23,108 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:23,108 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-09-30 10:58:23,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-30 10:58:23,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-30 10:58:23,109 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:23,109 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-09-30 10:58:23,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:23,297 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-09-30 10:58:23,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-09-30 10:58:23,297 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-09-30 10:58:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:23,298 INFO L225 Difference]: With dead ends: 121 [2018-09-30 10:58:23,299 INFO L226 Difference]: Without dead ends: 119 [2018-09-30 10:58:23,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:23,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-09-30 10:58:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-09-30 10:58:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-09-30 10:58:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-09-30 10:58:23,302 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-09-30 10:58:23,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:23,303 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-09-30 10:58:23,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-09-30 10:58:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-09-30 10:58:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-09-30 10:58:23,303 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:23,304 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:23,304 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:23,304 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:23,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-09-30 10:58:23,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:23,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:23,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:23,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:23,614 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:23,614 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:23,623 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:23,646 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:23,647 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:23,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:23,875 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:23,876 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-09-30 10:58:23,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-09-30 10:58:23,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-09-30 10:58:23,876 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:23,876 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-09-30 10:58:24,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:24,059 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-09-30 10:58:24,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-09-30 10:58:24,059 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-09-30 10:58:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:24,060 INFO L225 Difference]: With dead ends: 125 [2018-09-30 10:58:24,061 INFO L226 Difference]: Without dead ends: 123 [2018-09-30 10:58:24,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-09-30 10:58:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-09-30 10:58:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-09-30 10:58:24,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-09-30 10:58:24,064 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-09-30 10:58:24,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:24,065 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-09-30 10:58:24,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-09-30 10:58:24,065 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-09-30 10:58:24,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-09-30 10:58:24,065 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:24,066 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:24,066 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:24,066 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-09-30 10:58:24,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:24,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:24,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:24,067 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:24,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:24,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:24,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:24,382 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:24,460 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-09-30 10:58:24,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:24,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:24,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:24,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-09-30 10:58:24,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-09-30 10:58:24,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-09-30 10:58:24,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:24,716 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-09-30 10:58:24,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:24,899 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-09-30 10:58:24,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-09-30 10:58:24,899 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-09-30 10:58:24,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:24,900 INFO L225 Difference]: With dead ends: 129 [2018-09-30 10:58:24,901 INFO L226 Difference]: Without dead ends: 127 [2018-09-30 10:58:24,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-09-30 10:58:24,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-09-30 10:58:24,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-30 10:58:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-09-30 10:58:24,904 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-09-30 10:58:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:24,905 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-09-30 10:58:24,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-09-30 10:58:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-09-30 10:58:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-09-30 10:58:24,905 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:24,905 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:24,905 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:24,906 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-09-30 10:58:24,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:24,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:24,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:24,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:24,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:25,095 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:25,095 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:25,102 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:25,140 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-09-30 10:58:25,141 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:25,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:25,416 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:25,416 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-09-30 10:58:25,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-09-30 10:58:25,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-09-30 10:58:25,417 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:25,417 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-09-30 10:58:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:25,608 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-09-30 10:58:25,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-30 10:58:25,608 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-09-30 10:58:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:25,609 INFO L225 Difference]: With dead ends: 133 [2018-09-30 10:58:25,609 INFO L226 Difference]: Without dead ends: 131 [2018-09-30 10:58:25,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:25,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-09-30 10:58:25,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-09-30 10:58:25,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-09-30 10:58:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-09-30 10:58:25,613 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-09-30 10:58:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:25,614 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-09-30 10:58:25,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-09-30 10:58:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-09-30 10:58:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-09-30 10:58:25,615 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:25,615 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:25,615 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:25,615 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:25,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-09-30 10:58:25,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:25,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:25,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:25,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:25,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:25,837 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:25,837 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:25,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:25,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:26,111 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:26,111 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-09-30 10:58:26,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-09-30 10:58:26,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-09-30 10:58:26,112 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:26,112 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-09-30 10:58:26,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:26,306 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-09-30 10:58:26,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-09-30 10:58:26,306 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-09-30 10:58:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:26,308 INFO L225 Difference]: With dead ends: 137 [2018-09-30 10:58:26,308 INFO L226 Difference]: Without dead ends: 135 [2018-09-30 10:58:26,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-09-30 10:58:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-09-30 10:58:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-09-30 10:58:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-09-30 10:58:26,311 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-09-30 10:58:26,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:26,311 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-09-30 10:58:26,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-09-30 10:58:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-09-30 10:58:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-30 10:58:26,312 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:26,312 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:26,312 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:26,312 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-09-30 10:58:26,312 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:26,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:26,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:26,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:26,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:26,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:26,633 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:26,639 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:26,667 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:26,667 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:26,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:26,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:26,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-09-30 10:58:26,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-09-30 10:58:26,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-09-30 10:58:26,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:26,909 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-09-30 10:58:27,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:27,116 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-09-30 10:58:27,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-30 10:58:27,116 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-09-30 10:58:27,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:27,117 INFO L225 Difference]: With dead ends: 141 [2018-09-30 10:58:27,117 INFO L226 Difference]: Without dead ends: 139 [2018-09-30 10:58:27,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:27,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-09-30 10:58:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-09-30 10:58:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-09-30 10:58:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-09-30 10:58:27,120 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-09-30 10:58:27,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:27,120 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-09-30 10:58:27,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-09-30 10:58:27,121 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-09-30 10:58:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-30 10:58:27,121 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:27,121 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:27,122 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:27,122 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:27,122 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-09-30 10:58:27,122 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:27,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:27,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:27,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:27,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:27,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:27,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:27,381 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:27,421 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-09-30 10:58:27,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:27,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:27,682 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:27,682 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-09-30 10:58:27,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-09-30 10:58:27,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-09-30 10:58:27,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:27,683 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-09-30 10:58:27,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:27,863 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-09-30 10:58:27,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-09-30 10:58:27,863 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-09-30 10:58:27,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:27,865 INFO L225 Difference]: With dead ends: 145 [2018-09-30 10:58:27,865 INFO L226 Difference]: Without dead ends: 143 [2018-09-30 10:58:27,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:27,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-09-30 10:58:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-09-30 10:58:27,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-09-30 10:58:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-09-30 10:58:27,869 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-09-30 10:58:27,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:27,869 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-09-30 10:58:27,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-09-30 10:58:27,870 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-09-30 10:58:27,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-09-30 10:58:27,870 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:27,871 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:27,871 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:27,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:27,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-09-30 10:58:27,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:27,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:27,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:27,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:27,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:28,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:28,128 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:28,135 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:28,165 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:28,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:28,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:28,427 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:28,427 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-09-30 10:58:28,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-09-30 10:58:28,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-09-30 10:58:28,428 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:28,428 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-09-30 10:58:28,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:28,667 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-09-30 10:58:28,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-09-30 10:58:28,668 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-09-30 10:58:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:28,669 INFO L225 Difference]: With dead ends: 149 [2018-09-30 10:58:28,670 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 10:58:28,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 10:58:28,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-09-30 10:58:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-09-30 10:58:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-09-30 10:58:28,673 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-09-30 10:58:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:28,674 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-09-30 10:58:28,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-09-30 10:58:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-09-30 10:58:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-09-30 10:58:28,675 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:28,675 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:28,675 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:28,675 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:28,676 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-09-30 10:58:28,676 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:28,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:28,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:28,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:28,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:29,525 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:29,525 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:29,534 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:29,628 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 10:58:29,628 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:29,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:30,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:30,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-09-30 10:58:30,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-09-30 10:58:30,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-09-30 10:58:30,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:30,030 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-09-30 10:58:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:30,300 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-09-30 10:58:30,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-30 10:58:30,300 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-09-30 10:58:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:30,302 INFO L225 Difference]: With dead ends: 153 [2018-09-30 10:58:30,302 INFO L226 Difference]: Without dead ends: 151 [2018-09-30 10:58:30,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-09-30 10:58:30,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-09-30 10:58:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-09-30 10:58:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-09-30 10:58:30,306 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-09-30 10:58:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:30,306 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-09-30 10:58:30,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-09-30 10:58:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-09-30 10:58:30,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-30 10:58:30,307 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:30,307 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:30,308 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:30,308 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:30,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-09-30 10:58:30,308 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:30,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:30,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:30,309 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:30,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:30,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:30,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:30,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:30,966 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:31,025 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-09-30 10:58:31,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:31,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:31,742 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:31,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-09-30 10:58:31,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-09-30 10:58:31,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-09-30 10:58:31,743 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:31,743 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-09-30 10:58:31,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:31,899 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-09-30 10:58:31,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-09-30 10:58:31,900 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-09-30 10:58:31,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:31,901 INFO L225 Difference]: With dead ends: 157 [2018-09-30 10:58:31,901 INFO L226 Difference]: Without dead ends: 155 [2018-09-30 10:58:31,902 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:31,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-09-30 10:58:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-09-30 10:58:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-09-30 10:58:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-09-30 10:58:31,906 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-09-30 10:58:31,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:31,906 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-09-30 10:58:31,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-09-30 10:58:31,906 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-09-30 10:58:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-09-30 10:58:31,907 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:31,907 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:31,908 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:31,908 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-09-30 10:58:31,908 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:31,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:31,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:31,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:31,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:32,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:32,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:32,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:32,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:32,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:32,551 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:32,551 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-09-30 10:58:32,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-09-30 10:58:32,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-09-30 10:58:32,552 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:32,552 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-09-30 10:58:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:32,799 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-09-30 10:58:32,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-09-30 10:58:32,802 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-09-30 10:58:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:32,803 INFO L225 Difference]: With dead ends: 161 [2018-09-30 10:58:32,803 INFO L226 Difference]: Without dead ends: 159 [2018-09-30 10:58:32,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:32,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-09-30 10:58:32,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-09-30 10:58:32,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-09-30 10:58:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-09-30 10:58:32,806 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-09-30 10:58:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:32,807 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-09-30 10:58:32,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-09-30 10:58:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-09-30 10:58:32,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-30 10:58:32,808 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:32,808 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:32,808 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:32,808 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-09-30 10:58:32,808 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:32,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:32,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:32,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:32,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:34,052 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:34,052 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:34,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:34,090 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:34,090 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:34,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:35,288 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:35,288 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-09-30 10:58:35,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-09-30 10:58:35,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-09-30 10:58:35,289 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:35,289 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-09-30 10:58:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:35,636 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-09-30 10:58:35,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-09-30 10:58:35,636 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-09-30 10:58:35,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:35,638 INFO L225 Difference]: With dead ends: 165 [2018-09-30 10:58:35,638 INFO L226 Difference]: Without dead ends: 163 [2018-09-30 10:58:35,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:35,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-09-30 10:58:35,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-09-30 10:58:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-09-30 10:58:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-09-30 10:58:35,644 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-09-30 10:58:35,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:35,645 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-09-30 10:58:35,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-09-30 10:58:35,645 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-09-30 10:58:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-09-30 10:58:35,646 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:35,646 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:35,646 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:35,647 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-09-30 10:58:35,647 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:35,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:35,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:35,648 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:35,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:36,279 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:36,279 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:36,294 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:36,494 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-09-30 10:58:36,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:36,497 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:36,775 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:36,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-09-30 10:58:36,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-09-30 10:58:36,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-09-30 10:58:36,776 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:36,776 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-09-30 10:58:37,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:37,105 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-09-30 10:58:37,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 10:58:37,105 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-09-30 10:58:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:37,107 INFO L225 Difference]: With dead ends: 169 [2018-09-30 10:58:37,107 INFO L226 Difference]: Without dead ends: 167 [2018-09-30 10:58:37,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-09-30 10:58:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-09-30 10:58:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-09-30 10:58:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-09-30 10:58:37,110 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-09-30 10:58:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:37,110 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-09-30 10:58:37,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-09-30 10:58:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-09-30 10:58:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-09-30 10:58:37,111 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:37,112 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:37,112 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:37,112 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-09-30 10:58:37,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:37,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:37,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:37,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:37,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:37,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:37,548 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:37,555 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:37,587 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:37,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:37,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:37,858 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:37,859 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-09-30 10:58:37,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-09-30 10:58:37,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-09-30 10:58:37,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:37,859 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-09-30 10:58:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:38,045 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-09-30 10:58:38,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-09-30 10:58:38,045 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-09-30 10:58:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:38,046 INFO L225 Difference]: With dead ends: 173 [2018-09-30 10:58:38,046 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 10:58:38,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:38,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 10:58:38,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-09-30 10:58:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-09-30 10:58:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-09-30 10:58:38,049 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-09-30 10:58:38,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:38,049 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-09-30 10:58:38,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-09-30 10:58:38,050 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-09-30 10:58:38,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-09-30 10:58:38,050 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:38,051 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:38,051 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:38,051 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:38,051 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-09-30 10:58:38,051 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:38,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:38,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:38,052 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:38,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:38,419 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:38,419 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:38,427 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:38,485 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-09-30 10:58:38,486 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:38,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:38,828 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:38,828 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-09-30 10:58:38,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-09-30 10:58:38,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-09-30 10:58:38,829 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:38,829 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-09-30 10:58:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:39,278 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-09-30 10:58:39,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-09-30 10:58:39,278 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-09-30 10:58:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:39,279 INFO L225 Difference]: With dead ends: 177 [2018-09-30 10:58:39,280 INFO L226 Difference]: Without dead ends: 175 [2018-09-30 10:58:39,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-09-30 10:58:39,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-09-30 10:58:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-09-30 10:58:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-09-30 10:58:39,284 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-09-30 10:58:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:39,285 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-09-30 10:58:39,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-09-30 10:58:39,285 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-09-30 10:58:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-30 10:58:39,286 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:39,286 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:39,286 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:39,286 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:39,286 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-09-30 10:58:39,286 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:39,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:39,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:39,287 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:39,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:41,415 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:41,416 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:41,423 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:41,475 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-09-30 10:58:41,475 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:41,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:41,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:41,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:41,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-09-30 10:58:41,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-09-30 10:58:41,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-09-30 10:58:41,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:41,798 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-09-30 10:58:42,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:42,195 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-09-30 10:58:42,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-30 10:58:42,195 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-09-30 10:58:42,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:42,196 INFO L225 Difference]: With dead ends: 181 [2018-09-30 10:58:42,196 INFO L226 Difference]: Without dead ends: 179 [2018-09-30 10:58:42,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-09-30 10:58:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-09-30 10:58:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-09-30 10:58:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-09-30 10:58:42,199 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-09-30 10:58:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:42,199 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-09-30 10:58:42,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-09-30 10:58:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-09-30 10:58:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-09-30 10:58:42,200 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:42,201 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:42,201 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:42,201 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-09-30 10:58:42,201 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:42,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:42,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:42,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:42,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:43,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:43,424 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:43,424 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:43,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:43,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:43,768 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:43,768 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-09-30 10:58:43,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-09-30 10:58:43,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-09-30 10:58:43,769 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:43,769 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-09-30 10:58:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:44,021 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-09-30 10:58:44,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-09-30 10:58:44,021 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-09-30 10:58:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:44,022 INFO L225 Difference]: With dead ends: 185 [2018-09-30 10:58:44,022 INFO L226 Difference]: Without dead ends: 183 [2018-09-30 10:58:44,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-09-30 10:58:44,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-09-30 10:58:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-09-30 10:58:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-09-30 10:58:44,025 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-09-30 10:58:44,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:44,025 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-09-30 10:58:44,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-09-30 10:58:44,025 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-09-30 10:58:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-09-30 10:58:44,026 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:44,026 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:44,027 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:44,027 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-09-30 10:58:44,027 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:44,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:44,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:44,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:44,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:45,019 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:45,019 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:45,027 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:45,062 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:45,062 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:45,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:45,356 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:45,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-09-30 10:58:45,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-09-30 10:58:45,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-09-30 10:58:45,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:45,357 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-09-30 10:58:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:45,651 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-09-30 10:58:45,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-09-30 10:58:45,652 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-09-30 10:58:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:45,653 INFO L225 Difference]: With dead ends: 189 [2018-09-30 10:58:45,653 INFO L226 Difference]: Without dead ends: 187 [2018-09-30 10:58:45,653 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-09-30 10:58:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-09-30 10:58:45,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-09-30 10:58:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-09-30 10:58:45,657 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-09-30 10:58:45,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:45,657 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-09-30 10:58:45,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-09-30 10:58:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-09-30 10:58:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-09-30 10:58:45,658 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:45,658 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:45,658 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:45,658 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:45,658 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-09-30 10:58:45,658 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:45,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:45,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:45,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:45,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:46,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:46,694 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:46,703 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:46,762 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-09-30 10:58:46,762 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:46,766 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:47,645 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:47,646 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-09-30 10:58:47,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-09-30 10:58:47,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-09-30 10:58:47,647 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:47,647 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-09-30 10:58:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:49,559 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-09-30 10:58:49,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-09-30 10:58:49,559 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-09-30 10:58:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:49,561 INFO L225 Difference]: With dead ends: 193 [2018-09-30 10:58:49,561 INFO L226 Difference]: Without dead ends: 191 [2018-09-30 10:58:49,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:49,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-09-30 10:58:49,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-09-30 10:58:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-09-30 10:58:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-09-30 10:58:49,564 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-09-30 10:58:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:49,564 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-09-30 10:58:49,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-09-30 10:58:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-09-30 10:58:49,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-09-30 10:58:49,565 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:49,566 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:49,566 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:49,566 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:49,566 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-09-30 10:58:49,566 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:49,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:49,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:49,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:49,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:50,177 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:50,177 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:50,186 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:50,221 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:50,221 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:50,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:50,687 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:50,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-09-30 10:58:50,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-09-30 10:58:50,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-09-30 10:58:50,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:50,688 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-09-30 10:58:50,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:50,940 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-09-30 10:58:50,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-09-30 10:58:50,940 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-09-30 10:58:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:50,941 INFO L225 Difference]: With dead ends: 197 [2018-09-30 10:58:50,941 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 10:58:50,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 10:58:50,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-09-30 10:58:50,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-09-30 10:58:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-09-30 10:58:50,944 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-09-30 10:58:50,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:50,945 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-09-30 10:58:50,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-09-30 10:58:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-09-30 10:58:50,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-30 10:58:50,947 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:50,947 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:50,947 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:50,947 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:50,947 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-09-30 10:58:50,948 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:50,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:50,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:50,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:50,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:51,495 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:51,495 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:51,502 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:58:51,561 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-09-30 10:58:51,561 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:51,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:52,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:52,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-09-30 10:58:52,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-09-30 10:58:52,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-09-30 10:58:52,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:52,070 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-09-30 10:58:52,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:52,425 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-09-30 10:58:52,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-09-30 10:58:52,426 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-09-30 10:58:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:52,427 INFO L225 Difference]: With dead ends: 201 [2018-09-30 10:58:52,427 INFO L226 Difference]: Without dead ends: 199 [2018-09-30 10:58:52,427 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:52,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-09-30 10:58:52,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-09-30 10:58:52,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-09-30 10:58:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-09-30 10:58:52,430 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-09-30 10:58:52,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:52,430 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-09-30 10:58:52,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-09-30 10:58:52,430 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-09-30 10:58:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-09-30 10:58:52,431 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:52,431 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:52,431 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:52,432 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:52,432 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-09-30 10:58:52,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:52,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:52,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:52,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:52,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:52,871 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:52,871 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:52,879 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:58:52,942 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-09-30 10:58:52,943 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:52,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:53,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:53,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-09-30 10:58:53,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-09-30 10:58:53,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-09-30 10:58:53,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:53,263 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-09-30 10:58:53,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:53,618 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-09-30 10:58:53,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-09-30 10:58:53,618 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-09-30 10:58:53,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:53,619 INFO L225 Difference]: With dead ends: 205 [2018-09-30 10:58:53,619 INFO L226 Difference]: Without dead ends: 203 [2018-09-30 10:58:53,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-09-30 10:58:53,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-09-30 10:58:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-09-30 10:58:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-09-30 10:58:53,622 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-09-30 10:58:53,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:53,622 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-09-30 10:58:53,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-09-30 10:58:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-09-30 10:58:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-09-30 10:58:53,623 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:53,623 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:53,624 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:53,624 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:53,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-09-30 10:58:53,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:53,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:53,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:53,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:53,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:53,989 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:53,989 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:53,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:54,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:54,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:54,421 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:54,422 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-09-30 10:58:54,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-09-30 10:58:54,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-09-30 10:58:54,423 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:54,423 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-09-30 10:58:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:54,881 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-09-30 10:58:54,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-09-30 10:58:54,881 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-09-30 10:58:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:54,882 INFO L225 Difference]: With dead ends: 209 [2018-09-30 10:58:54,882 INFO L226 Difference]: Without dead ends: 207 [2018-09-30 10:58:54,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-09-30 10:58:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-09-30 10:58:54,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-09-30 10:58:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-09-30 10:58:54,885 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-09-30 10:58:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:54,886 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-09-30 10:58:54,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-09-30 10:58:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-09-30 10:58:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-09-30 10:58:54,887 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:54,887 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:54,887 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:54,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:54,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-09-30 10:58:54,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:54,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:54,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:54,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:58:54,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:55,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:55,400 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:55,409 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:58:55,453 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:58:55,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:55,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:56,182 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:56,182 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-09-30 10:58:56,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-09-30 10:58:56,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-09-30 10:58:56,183 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:56,183 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-09-30 10:58:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:56,511 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-09-30 10:58:56,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-09-30 10:58:56,511 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-09-30 10:58:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:56,513 INFO L225 Difference]: With dead ends: 213 [2018-09-30 10:58:56,513 INFO L226 Difference]: Without dead ends: 211 [2018-09-30 10:58:56,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:56,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-09-30 10:58:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-09-30 10:58:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-09-30 10:58:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-09-30 10:58:56,517 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-09-30 10:58:56,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:56,518 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-09-30 10:58:56,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-09-30 10:58:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-09-30 10:58:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-09-30 10:58:56,519 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:56,519 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:56,519 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:56,519 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:56,520 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-09-30 10:58:56,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:56,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:56,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:56,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:56,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:56,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:56,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:56,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:56,910 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:58:56,981 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-09-30 10:58:56,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:56,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:57,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:57,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-09-30 10:58:57,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-09-30 10:58:57,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-09-30 10:58:57,631 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:57,631 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-09-30 10:58:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:58,060 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-09-30 10:58:58,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-09-30 10:58:58,060 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-09-30 10:58:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:58,062 INFO L225 Difference]: With dead ends: 217 [2018-09-30 10:58:58,062 INFO L226 Difference]: Without dead ends: 215 [2018-09-30 10:58:58,063 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-09-30 10:58:58,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-09-30 10:58:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-09-30 10:58:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-09-30 10:58:58,065 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-09-30 10:58:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:58,066 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-09-30 10:58:58,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-09-30 10:58:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-09-30 10:58:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-09-30 10:58:58,067 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:58,067 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:58,067 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:58,067 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:58,068 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-09-30 10:58:58,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:58,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:58,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:58,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:58,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:58:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:58,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:58:58,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:58:58,416 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:58:58,458 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:58:58,459 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:58:58,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:58:58,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:58:58,964 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:58:58,964 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-09-30 10:58:58,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-09-30 10:58:58,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-09-30 10:58:58,965 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:58:58,965 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-09-30 10:58:59,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:58:59,437 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-09-30 10:58:59,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-09-30 10:58:59,437 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-09-30 10:58:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:58:59,439 INFO L225 Difference]: With dead ends: 221 [2018-09-30 10:58:59,439 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 10:58:59,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:58:59,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 10:58:59,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-09-30 10:58:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-09-30 10:58:59,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-09-30 10:58:59,441 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-09-30 10:58:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:58:59,441 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-09-30 10:58:59,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-09-30 10:58:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-09-30 10:58:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-09-30 10:58:59,442 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:58:59,442 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-09-30 10:58:59,442 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:58:59,443 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:58:59,443 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-09-30 10:58:59,443 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:58:59,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:58:59,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:59,443 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:58:59,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:58:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:00,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:00,199 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:00,199 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:00,208 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:00,281 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-09-30 10:59:00,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:00,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:00,673 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:00,673 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-09-30 10:59:00,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-09-30 10:59:00,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-09-30 10:59:00,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:00,674 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-09-30 10:59:01,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:01,134 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-09-30 10:59:01,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-09-30 10:59:01,135 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-09-30 10:59:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:01,136 INFO L225 Difference]: With dead ends: 225 [2018-09-30 10:59:01,136 INFO L226 Difference]: Without dead ends: 223 [2018-09-30 10:59:01,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:01,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-09-30 10:59:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-09-30 10:59:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-09-30 10:59:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-09-30 10:59:01,139 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-09-30 10:59:01,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:01,139 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-09-30 10:59:01,139 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-09-30 10:59:01,140 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-09-30 10:59:01,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-09-30 10:59:01,140 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:01,140 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:01,141 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:01,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-09-30 10:59:01,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:01,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:01,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:01,142 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:01,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:01,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:01,598 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:01,618 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:01,687 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-09-30 10:59:01,687 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:01,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:02,144 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:02,145 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-09-30 10:59:02,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-09-30 10:59:02,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-09-30 10:59:02,146 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:02,146 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-09-30 10:59:02,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:02,603 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-09-30 10:59:02,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-09-30 10:59:02,604 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-09-30 10:59:02,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:02,605 INFO L225 Difference]: With dead ends: 229 [2018-09-30 10:59:02,605 INFO L226 Difference]: Without dead ends: 227 [2018-09-30 10:59:02,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:02,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-09-30 10:59:02,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-09-30 10:59:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-09-30 10:59:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-09-30 10:59:02,608 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-09-30 10:59:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:02,609 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-09-30 10:59:02,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-09-30 10:59:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-09-30 10:59:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-09-30 10:59:02,610 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:02,610 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:02,610 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:02,611 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:02,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-09-30 10:59:02,611 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:02,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:02,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:02,612 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:02,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:02,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:02,930 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:02,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:02,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:03,351 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:03,352 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-09-30 10:59:03,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-09-30 10:59:03,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-09-30 10:59:03,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:03,353 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-09-30 10:59:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:03,858 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-09-30 10:59:03,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-09-30 10:59:03,858 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-09-30 10:59:03,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:03,859 INFO L225 Difference]: With dead ends: 233 [2018-09-30 10:59:03,859 INFO L226 Difference]: Without dead ends: 231 [2018-09-30 10:59:03,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-09-30 10:59:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-09-30 10:59:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-09-30 10:59:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-09-30 10:59:03,862 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-09-30 10:59:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:03,862 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-09-30 10:59:03,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-09-30 10:59:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-09-30 10:59:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-09-30 10:59:03,864 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:03,864 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:03,864 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:03,864 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:03,865 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-09-30 10:59:03,865 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:03,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:03,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:03,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:03,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:04,216 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:04,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:04,223 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:04,276 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:04,276 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:04,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:04,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:04,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-09-30 10:59:04,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-09-30 10:59:04,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-09-30 10:59:04,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:04,767 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-09-30 10:59:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:05,472 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-09-30 10:59:05,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-09-30 10:59:05,473 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-09-30 10:59:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:05,474 INFO L225 Difference]: With dead ends: 237 [2018-09-30 10:59:05,474 INFO L226 Difference]: Without dead ends: 235 [2018-09-30 10:59:05,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-09-30 10:59:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-09-30 10:59:05,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-09-30 10:59:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-09-30 10:59:05,476 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-09-30 10:59:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:05,476 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-09-30 10:59:05,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-09-30 10:59:05,476 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-09-30 10:59:05,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-09-30 10:59:05,477 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:05,477 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:05,478 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:05,478 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-09-30 10:59:05,478 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:05,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:05,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:05,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:05,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:05,841 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:05,841 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:05,848 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:05,923 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-09-30 10:59:05,923 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:05,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:06,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:06,350 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-09-30 10:59:06,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-09-30 10:59:06,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-09-30 10:59:06,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:06,351 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-09-30 10:59:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:06,790 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-09-30 10:59:06,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-30 10:59:06,791 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-09-30 10:59:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:06,792 INFO L225 Difference]: With dead ends: 241 [2018-09-30 10:59:06,792 INFO L226 Difference]: Without dead ends: 239 [2018-09-30 10:59:06,793 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:06,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-09-30 10:59:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-09-30 10:59:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-09-30 10:59:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-09-30 10:59:06,795 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-09-30 10:59:06,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:06,796 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-09-30 10:59:06,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-09-30 10:59:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-09-30 10:59:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-09-30 10:59:06,796 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:06,797 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:06,797 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:06,797 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-09-30 10:59:06,797 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:06,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:06,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:06,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:06,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:07,134 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:07,135 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:07,144 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:07,191 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:07,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:07,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:07,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:07,658 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:07,658 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-09-30 10:59:07,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-09-30 10:59:07,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-09-30 10:59:07,659 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:07,659 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-09-30 10:59:08,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:08,095 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-09-30 10:59:08,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-09-30 10:59:08,095 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-09-30 10:59:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:08,096 INFO L225 Difference]: With dead ends: 245 [2018-09-30 10:59:08,097 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 10:59:08,097 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:08,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 10:59:08,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-09-30 10:59:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-09-30 10:59:08,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-09-30 10:59:08,099 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-09-30 10:59:08,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:08,099 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-09-30 10:59:08,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-09-30 10:59:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-09-30 10:59:08,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-09-30 10:59:08,100 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:08,101 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:08,101 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:08,101 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:08,101 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-09-30 10:59:08,101 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:08,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:08,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:08,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:08,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:08,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:08,477 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:08,484 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:08,562 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-09-30 10:59:08,563 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:08,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:08,955 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:08,955 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-09-30 10:59:08,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-09-30 10:59:08,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-09-30 10:59:08,956 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:08,956 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-09-30 10:59:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:09,513 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-09-30 10:59:09,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-09-30 10:59:09,513 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-09-30 10:59:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:09,514 INFO L225 Difference]: With dead ends: 249 [2018-09-30 10:59:09,514 INFO L226 Difference]: Without dead ends: 247 [2018-09-30 10:59:09,514 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-09-30 10:59:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-09-30 10:59:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-09-30 10:59:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-09-30 10:59:09,517 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-09-30 10:59:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:09,518 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-09-30 10:59:09,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-09-30 10:59:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-09-30 10:59:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-09-30 10:59:09,519 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:09,519 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:09,520 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:09,520 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:09,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-09-30 10:59:09,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:09,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:09,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:09,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:09,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:10,126 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:10,126 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:10,134 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:10,218 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-09-30 10:59:10,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:10,221 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:10,842 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:10,842 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-09-30 10:59:10,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-09-30 10:59:10,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-09-30 10:59:10,843 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:10,843 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-09-30 10:59:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:11,392 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-09-30 10:59:11,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-09-30 10:59:11,392 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-09-30 10:59:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:11,393 INFO L225 Difference]: With dead ends: 253 [2018-09-30 10:59:11,393 INFO L226 Difference]: Without dead ends: 251 [2018-09-30 10:59:11,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-09-30 10:59:11,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-09-30 10:59:11,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-09-30 10:59:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-09-30 10:59:11,396 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-09-30 10:59:11,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:11,396 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-09-30 10:59:11,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-09-30 10:59:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-09-30 10:59:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-09-30 10:59:11,397 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:11,397 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:11,397 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:11,398 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:11,398 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-09-30 10:59:11,398 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:11,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:11,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:11,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:11,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:11,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:11,876 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:11,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:11,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:12,347 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:12,348 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-09-30 10:59:12,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-09-30 10:59:12,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-09-30 10:59:12,349 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:12,349 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-09-30 10:59:12,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:12,866 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-09-30 10:59:12,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-09-30 10:59:12,866 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-09-30 10:59:12,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:12,867 INFO L225 Difference]: With dead ends: 257 [2018-09-30 10:59:12,867 INFO L226 Difference]: Without dead ends: 255 [2018-09-30 10:59:12,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:12,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-09-30 10:59:12,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-09-30 10:59:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-09-30 10:59:12,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-09-30 10:59:12,870 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-09-30 10:59:12,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:12,871 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-09-30 10:59:12,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-09-30 10:59:12,871 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-09-30 10:59:12,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-09-30 10:59:12,871 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:12,872 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:12,872 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:12,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:12,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-09-30 10:59:12,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:12,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:12,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:12,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:12,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:13,261 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:13,261 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:13,268 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:13,316 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:13,316 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:13,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:13,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:13,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-09-30 10:59:13,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-09-30 10:59:13,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-09-30 10:59:13,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:13,738 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-09-30 10:59:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:14,197 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-09-30 10:59:14,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-09-30 10:59:14,197 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-09-30 10:59:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:14,198 INFO L225 Difference]: With dead ends: 261 [2018-09-30 10:59:14,198 INFO L226 Difference]: Without dead ends: 259 [2018-09-30 10:59:14,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:14,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-09-30 10:59:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-09-30 10:59:14,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-09-30 10:59:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-09-30 10:59:14,202 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-09-30 10:59:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:14,202 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-09-30 10:59:14,202 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-09-30 10:59:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-09-30 10:59:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-09-30 10:59:14,204 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:14,204 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:14,204 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:14,204 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:14,204 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-09-30 10:59:14,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:14,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:14,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:14,205 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:14,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:14,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:14,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:14,629 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:14,714 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-09-30 10:59:14,714 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:14,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:15,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:15,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-09-30 10:59:15,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-09-30 10:59:15,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-09-30 10:59:15,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:15,134 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-09-30 10:59:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:15,656 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-09-30 10:59:15,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-09-30 10:59:15,656 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-09-30 10:59:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:15,657 INFO L225 Difference]: With dead ends: 265 [2018-09-30 10:59:15,657 INFO L226 Difference]: Without dead ends: 263 [2018-09-30 10:59:15,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:15,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-09-30 10:59:15,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-09-30 10:59:15,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-09-30 10:59:15,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-09-30 10:59:15,661 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-09-30 10:59:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:15,661 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-09-30 10:59:15,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-09-30 10:59:15,661 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-09-30 10:59:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-09-30 10:59:15,662 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:15,663 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:15,663 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:15,663 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:15,663 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-09-30 10:59:15,663 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:15,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:15,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:15,664 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:15,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:16,061 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:16,061 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:16,068 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:16,119 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:16,119 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:16,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:16,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:16,556 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:16,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-09-30 10:59:16,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-09-30 10:59:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-09-30 10:59:16,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:16,557 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-09-30 10:59:17,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:17,085 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-09-30 10:59:17,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-09-30 10:59:17,085 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-09-30 10:59:17,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:17,086 INFO L225 Difference]: With dead ends: 269 [2018-09-30 10:59:17,086 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 10:59:17,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 10:59:17,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-09-30 10:59:17,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-09-30 10:59:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-09-30 10:59:17,090 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-09-30 10:59:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:17,091 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-09-30 10:59:17,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-09-30 10:59:17,091 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-09-30 10:59:17,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-09-30 10:59:17,092 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:17,092 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:17,092 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:17,093 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-09-30 10:59:17,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:17,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:17,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:17,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:17,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:17,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:17,513 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:17,513 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:17,520 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:17,614 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-09-30 10:59:17,614 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:17,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:18,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:18,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-09-30 10:59:18,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-09-30 10:59:18,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-09-30 10:59:18,103 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:18,104 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-09-30 10:59:18,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:18,782 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-09-30 10:59:18,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-09-30 10:59:18,782 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-09-30 10:59:18,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:18,783 INFO L225 Difference]: With dead ends: 273 [2018-09-30 10:59:18,783 INFO L226 Difference]: Without dead ends: 271 [2018-09-30 10:59:18,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:18,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-09-30 10:59:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-09-30 10:59:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-09-30 10:59:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-09-30 10:59:18,786 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-09-30 10:59:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:18,787 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-09-30 10:59:18,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-09-30 10:59:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-09-30 10:59:18,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-09-30 10:59:18,788 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:18,788 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:18,789 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:18,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:18,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-09-30 10:59:18,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:18,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:18,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:18,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:18,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:19,220 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:19,220 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:19,227 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:19,317 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-09-30 10:59:19,318 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:19,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:19,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:19,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:19,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-09-30 10:59:19,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-09-30 10:59:19,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-09-30 10:59:19,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:19,787 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-09-30 10:59:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:20,350 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-09-30 10:59:20,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-09-30 10:59:20,351 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-09-30 10:59:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:20,352 INFO L225 Difference]: With dead ends: 277 [2018-09-30 10:59:20,352 INFO L226 Difference]: Without dead ends: 275 [2018-09-30 10:59:20,352 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-09-30 10:59:20,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-09-30 10:59:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-09-30 10:59:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-09-30 10:59:20,354 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-09-30 10:59:20,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:20,354 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-09-30 10:59:20,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-09-30 10:59:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-09-30 10:59:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-30 10:59:20,356 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:20,356 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:20,356 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:20,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-09-30 10:59:20,356 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:20,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:20,357 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:20,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:20,936 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:20,936 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:20,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:21,000 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:21,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:21,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:21,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-09-30 10:59:21,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-09-30 10:59:21,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-09-30 10:59:21,471 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:21,471 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-09-30 10:59:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:22,026 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-09-30 10:59:22,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-09-30 10:59:22,026 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-09-30 10:59:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:22,027 INFO L225 Difference]: With dead ends: 281 [2018-09-30 10:59:22,027 INFO L226 Difference]: Without dead ends: 279 [2018-09-30 10:59:22,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:22,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-09-30 10:59:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-09-30 10:59:22,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-09-30 10:59:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-09-30 10:59:22,031 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-09-30 10:59:22,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:22,031 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-09-30 10:59:22,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-09-30 10:59:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-09-30 10:59:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-09-30 10:59:22,033 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:22,033 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:22,033 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:22,033 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:22,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-09-30 10:59:22,034 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:22,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:22,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:22,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:22,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:22,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:22,471 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:22,471 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:22,479 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:22,534 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:22,534 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:22,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:23,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:23,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-09-30 10:59:23,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-09-30 10:59:23,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-09-30 10:59:23,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:23,041 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-09-30 10:59:23,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:23,639 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-09-30 10:59:23,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-09-30 10:59:23,640 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-09-30 10:59:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:23,641 INFO L225 Difference]: With dead ends: 285 [2018-09-30 10:59:23,641 INFO L226 Difference]: Without dead ends: 283 [2018-09-30 10:59:23,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:23,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-09-30 10:59:23,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-09-30 10:59:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-09-30 10:59:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-09-30 10:59:23,644 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-09-30 10:59:23,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:23,644 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-09-30 10:59:23,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-09-30 10:59:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-09-30 10:59:23,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-09-30 10:59:23,645 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:23,646 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:23,646 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:23,646 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:23,646 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-09-30 10:59:23,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:23,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:23,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:23,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:23,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:24,079 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:24,079 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:24,086 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:24,187 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-09-30 10:59:24,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:24,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:24,936 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:24,937 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-09-30 10:59:24,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-09-30 10:59:24,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-09-30 10:59:24,938 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:24,938 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-09-30 10:59:25,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:25,530 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-09-30 10:59:25,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-09-30 10:59:25,531 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-09-30 10:59:25,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:25,532 INFO L225 Difference]: With dead ends: 289 [2018-09-30 10:59:25,532 INFO L226 Difference]: Without dead ends: 287 [2018-09-30 10:59:25,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-09-30 10:59:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-09-30 10:59:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-09-30 10:59:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-09-30 10:59:25,535 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-09-30 10:59:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:25,535 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-09-30 10:59:25,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-09-30 10:59:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-09-30 10:59:25,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-30 10:59:25,536 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:25,536 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:25,536 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:25,537 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-09-30 10:59:25,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:25,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:25,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:25,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:25,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:26,163 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:26,163 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:26,171 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:26,225 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:26,225 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:26,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:26,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:26,707 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:26,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-09-30 10:59:26,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-09-30 10:59:26,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-09-30 10:59:26,709 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:26,709 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-09-30 10:59:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:27,454 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-09-30 10:59:27,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-09-30 10:59:27,455 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-09-30 10:59:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:27,456 INFO L225 Difference]: With dead ends: 293 [2018-09-30 10:59:27,456 INFO L226 Difference]: Without dead ends: 291 [2018-09-30 10:59:27,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:27,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-09-30 10:59:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-09-30 10:59:27,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-09-30 10:59:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-09-30 10:59:27,459 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-09-30 10:59:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:27,459 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-09-30 10:59:27,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-09-30 10:59:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-09-30 10:59:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-09-30 10:59:27,461 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:27,461 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:27,461 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:27,461 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:27,462 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-09-30 10:59:27,462 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:27,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:27,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:27,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:27,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:27,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:27,966 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:27,973 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:28,076 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-09-30 10:59:28,076 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:28,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:28,578 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:28,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-09-30 10:59:28,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-09-30 10:59:28,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-09-30 10:59:28,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:28,580 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-09-30 10:59:29,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:29,184 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-09-30 10:59:29,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-09-30 10:59:29,185 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-09-30 10:59:29,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:29,186 INFO L225 Difference]: With dead ends: 297 [2018-09-30 10:59:29,186 INFO L226 Difference]: Without dead ends: 295 [2018-09-30 10:59:29,186 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:29,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-09-30 10:59:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-09-30 10:59:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-09-30 10:59:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-09-30 10:59:29,188 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-09-30 10:59:29,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:29,189 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-09-30 10:59:29,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-09-30 10:59:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-09-30 10:59:29,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-09-30 10:59:29,190 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:29,190 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:29,190 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:29,191 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:29,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-09-30 10:59:29,191 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:29,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:29,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:29,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:29,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:29,809 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:29,809 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:29,815 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:29,925 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-09-30 10:59:29,925 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:29,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:30,405 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:30,405 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-09-30 10:59:30,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-09-30 10:59:30,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-09-30 10:59:30,407 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:30,407 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-09-30 10:59:31,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:31,113 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-09-30 10:59:31,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-09-30 10:59:31,114 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-09-30 10:59:31,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:31,115 INFO L225 Difference]: With dead ends: 301 [2018-09-30 10:59:31,115 INFO L226 Difference]: Without dead ends: 299 [2018-09-30 10:59:31,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-09-30 10:59:31,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-09-30 10:59:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-09-30 10:59:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-09-30 10:59:31,117 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-09-30 10:59:31,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:31,118 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-09-30 10:59:31,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-09-30 10:59:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-09-30 10:59:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-09-30 10:59:31,119 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:31,119 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:31,119 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:31,119 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-09-30 10:59:31,120 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:31,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:31,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:31,120 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:31,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:31,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:31,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:31,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:31,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:32,180 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:32,180 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-09-30 10:59:32,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-09-30 10:59:32,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-09-30 10:59:32,181 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:32,181 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-09-30 10:59:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:32,881 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-09-30 10:59:32,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-09-30 10:59:32,882 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-09-30 10:59:32,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:32,883 INFO L225 Difference]: With dead ends: 305 [2018-09-30 10:59:32,883 INFO L226 Difference]: Without dead ends: 303 [2018-09-30 10:59:32,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-09-30 10:59:32,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-09-30 10:59:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-09-30 10:59:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-09-30 10:59:32,886 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-09-30 10:59:32,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:32,886 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-09-30 10:59:32,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-09-30 10:59:32,886 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-09-30 10:59:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-09-30 10:59:32,887 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:32,887 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:32,888 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:32,888 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-09-30 10:59:32,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:32,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:32,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:32,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:32,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:33,329 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:33,330 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:33,336 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:33,391 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:33,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:33,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:33,907 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:33,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-09-30 10:59:33,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-09-30 10:59:33,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-09-30 10:59:33,909 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:33,909 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-09-30 10:59:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:34,585 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-09-30 10:59:34,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-09-30 10:59:34,585 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-09-30 10:59:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:34,586 INFO L225 Difference]: With dead ends: 309 [2018-09-30 10:59:34,586 INFO L226 Difference]: Without dead ends: 307 [2018-09-30 10:59:34,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:34,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-09-30 10:59:34,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-09-30 10:59:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-09-30 10:59:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-09-30 10:59:34,589 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-09-30 10:59:34,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:34,589 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-09-30 10:59:34,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-09-30 10:59:34,589 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-09-30 10:59:34,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-09-30 10:59:34,590 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:34,590 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:34,591 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:34,591 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:34,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-09-30 10:59:34,591 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:34,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:34,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:34,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:34,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:35,043 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:35,043 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:35,051 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:35,161 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-09-30 10:59:35,161 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:35,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:35,646 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:35,666 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:35,666 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-09-30 10:59:35,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-09-30 10:59:35,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-09-30 10:59:35,667 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:35,667 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-09-30 10:59:36,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:36,541 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-09-30 10:59:36,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-09-30 10:59:36,541 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-09-30 10:59:36,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:36,543 INFO L225 Difference]: With dead ends: 313 [2018-09-30 10:59:36,543 INFO L226 Difference]: Without dead ends: 311 [2018-09-30 10:59:36,543 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:36,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-09-30 10:59:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-09-30 10:59:36,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-09-30 10:59:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-09-30 10:59:36,546 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-09-30 10:59:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:36,546 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-09-30 10:59:36,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-09-30 10:59:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-09-30 10:59:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-09-30 10:59:36,547 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:36,547 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:36,548 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:36,548 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:36,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-09-30 10:59:36,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:36,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:36,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:36,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:36,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:37,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:37,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:37,010 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:37,068 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:37,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:37,072 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:37,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:37,594 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-09-30 10:59:37,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-09-30 10:59:37,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-09-30 10:59:37,595 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:37,596 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-09-30 10:59:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:38,292 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-09-30 10:59:38,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-09-30 10:59:38,293 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-09-30 10:59:38,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:38,294 INFO L225 Difference]: With dead ends: 317 [2018-09-30 10:59:38,294 INFO L226 Difference]: Without dead ends: 315 [2018-09-30 10:59:38,294 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:38,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-09-30 10:59:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-09-30 10:59:38,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-09-30 10:59:38,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-09-30 10:59:38,298 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-09-30 10:59:38,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:38,299 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-09-30 10:59:38,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-09-30 10:59:38,299 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-09-30 10:59:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-09-30 10:59:38,300 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:38,301 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:38,301 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:38,301 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:38,301 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-09-30 10:59:38,301 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:38,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:38,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:38,302 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:38,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:38,786 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:38,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:38,794 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:38,908 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-09-30 10:59:38,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:38,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:39,427 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:39,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-09-30 10:59:39,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-09-30 10:59:39,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-09-30 10:59:39,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:39,429 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-09-30 10:59:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:40,197 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-09-30 10:59:40,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-09-30 10:59:40,197 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-09-30 10:59:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:40,198 INFO L225 Difference]: With dead ends: 321 [2018-09-30 10:59:40,198 INFO L226 Difference]: Without dead ends: 319 [2018-09-30 10:59:40,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-09-30 10:59:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-09-30 10:59:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-09-30 10:59:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-09-30 10:59:40,201 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-09-30 10:59:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:40,201 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-09-30 10:59:40,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-09-30 10:59:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-09-30 10:59:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-09-30 10:59:40,202 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:40,202 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:40,203 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:40,203 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:40,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-09-30 10:59:40,203 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:40,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:40,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:40,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:40,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:40,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:40,687 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:40,694 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:40,808 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-09-30 10:59:40,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:40,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:41,589 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:41,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-09-30 10:59:41,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-09-30 10:59:41,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-09-30 10:59:41,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:41,591 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-09-30 10:59:42,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:42,389 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-09-30 10:59:42,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-09-30 10:59:42,390 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-09-30 10:59:42,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:42,391 INFO L225 Difference]: With dead ends: 325 [2018-09-30 10:59:42,391 INFO L226 Difference]: Without dead ends: 323 [2018-09-30 10:59:42,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:42,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-09-30 10:59:42,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-09-30 10:59:42,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-09-30 10:59:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-09-30 10:59:42,394 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-09-30 10:59:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:42,394 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-09-30 10:59:42,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-09-30 10:59:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-09-30 10:59:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-30 10:59:42,395 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:42,395 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:42,395 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:42,396 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:42,396 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-09-30 10:59:42,396 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:42,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:42,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:42,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:42,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:42,910 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:42,910 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:42,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:42,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:43,528 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:43,528 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-09-30 10:59:43,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-09-30 10:59:43,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-09-30 10:59:43,529 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:43,529 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-09-30 10:59:44,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:44,308 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-09-30 10:59:44,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-09-30 10:59:44,308 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-09-30 10:59:44,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:44,309 INFO L225 Difference]: With dead ends: 329 [2018-09-30 10:59:44,309 INFO L226 Difference]: Without dead ends: 327 [2018-09-30 10:59:44,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-09-30 10:59:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-09-30 10:59:44,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-09-30 10:59:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-09-30 10:59:44,312 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-09-30 10:59:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:44,313 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-09-30 10:59:44,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-09-30 10:59:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-09-30 10:59:44,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-09-30 10:59:44,314 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:44,314 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:44,314 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:44,314 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:44,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-09-30 10:59:44,314 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:44,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:44,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:44,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:44,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:44,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:44,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:44,819 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:44,826 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:44,886 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:44,886 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:44,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:45,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:45,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-09-30 10:59:45,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-09-30 10:59:45,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-09-30 10:59:45,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:45,449 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-09-30 10:59:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:46,464 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-09-30 10:59:46,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-09-30 10:59:46,464 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-09-30 10:59:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:46,465 INFO L225 Difference]: With dead ends: 333 [2018-09-30 10:59:46,465 INFO L226 Difference]: Without dead ends: 331 [2018-09-30 10:59:46,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-09-30 10:59:46,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-09-30 10:59:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-09-30 10:59:46,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-09-30 10:59:46,468 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-09-30 10:59:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:46,468 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-09-30 10:59:46,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-09-30 10:59:46,469 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-09-30 10:59:46,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-09-30 10:59:46,470 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:46,470 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:46,470 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:46,470 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:46,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-09-30 10:59:46,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:46,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:46,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:46,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:46,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:47,240 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:47,240 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:47,247 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 10:59:47,383 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-09-30 10:59:47,384 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:47,389 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:47,962 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:47,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-09-30 10:59:47,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-09-30 10:59:47,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-09-30 10:59:47,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:47,964 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-09-30 10:59:49,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:49,904 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-09-30 10:59:49,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-09-30 10:59:49,904 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-09-30 10:59:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:49,905 INFO L225 Difference]: With dead ends: 337 [2018-09-30 10:59:49,905 INFO L226 Difference]: Without dead ends: 335 [2018-09-30 10:59:49,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:49,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-09-30 10:59:49,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-09-30 10:59:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-09-30 10:59:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-09-30 10:59:49,908 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-09-30 10:59:49,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:49,908 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-09-30 10:59:49,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-09-30 10:59:49,909 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-09-30 10:59:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-09-30 10:59:49,910 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:49,910 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:49,910 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:49,910 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-09-30 10:59:49,910 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:49,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:49,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:49,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:49,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:50,422 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:50,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:50,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:50,431 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 10:59:50,496 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 10:59:50,496 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:50,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:51,163 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:51,164 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-09-30 10:59:51,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-09-30 10:59:51,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-09-30 10:59:51,165 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:51,165 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-09-30 10:59:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:52,084 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-09-30 10:59:52,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-09-30 10:59:52,085 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-09-30 10:59:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:52,086 INFO L225 Difference]: With dead ends: 341 [2018-09-30 10:59:52,086 INFO L226 Difference]: Without dead ends: 339 [2018-09-30 10:59:52,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:52,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-09-30 10:59:52,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-09-30 10:59:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-09-30 10:59:52,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-09-30 10:59:52,089 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-09-30 10:59:52,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:52,089 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-09-30 10:59:52,089 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-09-30 10:59:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-09-30 10:59:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-09-30 10:59:52,090 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:52,091 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:52,091 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:52,091 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-09-30 10:59:52,091 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:52,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:52,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:52,092 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:52,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:52,651 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:52,651 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:52,660 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 10:59:52,790 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-09-30 10:59:52,790 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:52,794 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:53,356 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:53,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-09-30 10:59:53,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-09-30 10:59:53,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-09-30 10:59:53,358 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:53,358 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-09-30 10:59:54,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:54,244 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-09-30 10:59:54,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-09-30 10:59:54,245 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-09-30 10:59:54,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:54,246 INFO L225 Difference]: With dead ends: 345 [2018-09-30 10:59:54,246 INFO L226 Difference]: Without dead ends: 343 [2018-09-30 10:59:54,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-09-30 10:59:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-09-30 10:59:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-09-30 10:59:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-09-30 10:59:54,249 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-09-30 10:59:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:54,250 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-09-30 10:59:54,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-09-30 10:59:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-09-30 10:59:54,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-30 10:59:54,252 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:54,252 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:54,252 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:54,252 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:54,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-09-30 10:59:54,253 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:54,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:54,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:54,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:54,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:54,810 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:54,810 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:54,821 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 10:59:54,950 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-09-30 10:59:54,950 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:54,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:55,516 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:55,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-09-30 10:59:55,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-09-30 10:59:55,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-09-30 10:59:55,518 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:55,519 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-09-30 10:59:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:56,578 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-09-30 10:59:56,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-09-30 10:59:56,579 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-09-30 10:59:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:56,580 INFO L225 Difference]: With dead ends: 349 [2018-09-30 10:59:56,580 INFO L226 Difference]: Without dead ends: 347 [2018-09-30 10:59:56,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-09-30 10:59:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-09-30 10:59:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-09-30 10:59:56,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-09-30 10:59:56,584 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-09-30 10:59:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:56,584 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-09-30 10:59:56,584 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-09-30 10:59:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-09-30 10:59:56,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-09-30 10:59:56,586 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:56,586 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:56,586 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:56,586 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:56,586 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-09-30 10:59:56,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:56,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:56,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:56,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 10:59:56,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:57,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:57,152 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:57,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:57,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:59:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:57,805 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:59:57,805 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-09-30 10:59:57,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-09-30 10:59:57,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-09-30 10:59:57,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:59:57,807 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-09-30 10:59:58,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:59:58,886 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-09-30 10:59:58,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-09-30 10:59:58,886 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-09-30 10:59:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:59:58,887 INFO L225 Difference]: With dead ends: 353 [2018-09-30 10:59:58,887 INFO L226 Difference]: Without dead ends: 351 [2018-09-30 10:59:58,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:59:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-09-30 10:59:58,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-09-30 10:59:58,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-09-30 10:59:58,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-09-30 10:59:58,891 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-09-30 10:59:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:59:58,891 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-09-30 10:59:58,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-09-30 10:59:58,891 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-09-30 10:59:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-30 10:59:58,892 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:59:58,893 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-09-30 10:59:58,893 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:59:58,893 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:59:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-09-30 10:59:58,893 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:59:58,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:59:58,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:58,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:59:58,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:59:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:59:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:59:59,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:59:59,455 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:59:59,463 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:59:59,528 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:59:59,528 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:59:59,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:00,118 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:00,119 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-09-30 11:00:00,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-09-30 11:00:00,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-09-30 11:00:00,120 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:00,120 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-09-30 11:00:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:01,263 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-09-30 11:00:01,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-09-30 11:00:01,263 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-09-30 11:00:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:01,264 INFO L225 Difference]: With dead ends: 357 [2018-09-30 11:00:01,264 INFO L226 Difference]: Without dead ends: 355 [2018-09-30 11:00:01,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:01,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-09-30 11:00:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-09-30 11:00:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-09-30 11:00:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-09-30 11:00:01,267 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-09-30 11:00:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:01,268 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-09-30 11:00:01,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-09-30 11:00:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-09-30 11:00:01,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-09-30 11:00:01,269 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:01,269 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:01,269 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:01,269 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:01,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-09-30 11:00:01,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:01,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:01,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:01,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:01,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:02,037 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:02,037 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:02,045 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:02,187 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-09-30 11:00:02,187 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:02,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:02,775 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:02,775 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-09-30 11:00:02,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-09-30 11:00:02,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-09-30 11:00:02,777 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:02,777 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-09-30 11:00:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:03,785 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-09-30 11:00:03,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-09-30 11:00:03,786 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-09-30 11:00:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:03,787 INFO L225 Difference]: With dead ends: 361 [2018-09-30 11:00:03,787 INFO L226 Difference]: Without dead ends: 359 [2018-09-30 11:00:03,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-09-30 11:00:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-09-30 11:00:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-09-30 11:00:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-09-30 11:00:03,790 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-09-30 11:00:03,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:03,790 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-09-30 11:00:03,790 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-09-30 11:00:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-09-30 11:00:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-09-30 11:00:03,792 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:03,792 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:03,792 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:03,792 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:03,792 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-09-30 11:00:03,792 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:03,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:03,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:03,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:03,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:04,393 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:04,393 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:04,400 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:04,477 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:04,478 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:04,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:05,147 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:05,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-09-30 11:00:05,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-09-30 11:00:05,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-09-30 11:00:05,149 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:05,149 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-09-30 11:00:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:06,263 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-09-30 11:00:06,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-09-30 11:00:06,263 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-09-30 11:00:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:06,264 INFO L225 Difference]: With dead ends: 365 [2018-09-30 11:00:06,265 INFO L226 Difference]: Without dead ends: 363 [2018-09-30 11:00:06,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:06,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-09-30 11:00:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-09-30 11:00:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-09-30 11:00:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-09-30 11:00:06,268 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-09-30 11:00:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:06,268 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-09-30 11:00:06,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-09-30 11:00:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-09-30 11:00:06,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-09-30 11:00:06,270 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:06,270 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:06,270 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:06,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:06,270 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-09-30 11:00:06,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:06,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:06,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:06,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:07,089 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:07,089 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:07,089 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:07,096 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:07,243 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-09-30 11:00:07,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:07,248 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:07,857 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:07,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-09-30 11:00:07,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-09-30 11:00:07,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-09-30 11:00:07,859 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:07,859 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-09-30 11:00:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:09,064 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-09-30 11:00:09,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-09-30 11:00:09,065 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-09-30 11:00:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:09,066 INFO L225 Difference]: With dead ends: 369 [2018-09-30 11:00:09,066 INFO L226 Difference]: Without dead ends: 367 [2018-09-30 11:00:09,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-09-30 11:00:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-09-30 11:00:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-09-30 11:00:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-09-30 11:00:09,069 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-09-30 11:00:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:09,069 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-09-30 11:00:09,069 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-09-30 11:00:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-09-30 11:00:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-09-30 11:00:09,071 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:09,071 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:09,071 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:09,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-09-30 11:00:09,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:09,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:09,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:09,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:09,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:09,682 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:09,682 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:09,690 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:09,874 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-09-30 11:00:09,874 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:09,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:10,502 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:10,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-09-30 11:00:10,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-09-30 11:00:10,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-09-30 11:00:10,503 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:10,504 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-09-30 11:00:11,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:11,562 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-09-30 11:00:11,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-09-30 11:00:11,562 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-09-30 11:00:11,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:11,563 INFO L225 Difference]: With dead ends: 373 [2018-09-30 11:00:11,563 INFO L226 Difference]: Without dead ends: 371 [2018-09-30 11:00:11,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:11,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-09-30 11:00:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-09-30 11:00:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-09-30 11:00:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-09-30 11:00:11,566 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-09-30 11:00:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:11,567 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-09-30 11:00:11,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-09-30 11:00:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-09-30 11:00:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-09-30 11:00:11,568 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:11,568 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:11,568 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:11,568 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:11,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-09-30 11:00:11,569 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:11,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:11,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:11,572 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:11,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:12,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:12,389 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:12,389 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:12,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:12,468 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:13,092 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:13,092 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-09-30 11:00:13,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-09-30 11:00:13,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-09-30 11:00:13,093 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:13,093 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-09-30 11:00:14,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:14,356 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-09-30 11:00:14,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-09-30 11:00:14,356 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-09-30 11:00:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:14,357 INFO L225 Difference]: With dead ends: 377 [2018-09-30 11:00:14,357 INFO L226 Difference]: Without dead ends: 375 [2018-09-30 11:00:14,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:14,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-09-30 11:00:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-09-30 11:00:14,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-09-30 11:00:14,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-09-30 11:00:14,361 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-09-30 11:00:14,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:14,361 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-09-30 11:00:14,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-09-30 11:00:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-09-30 11:00:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-30 11:00:14,362 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:14,362 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:14,363 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:14,363 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:14,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-09-30 11:00:14,363 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:14,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:14,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:14,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:15,071 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:15,071 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:15,078 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:15,147 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:15,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:15,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:15,792 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:15,792 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-09-30 11:00:15,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-09-30 11:00:15,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-09-30 11:00:15,794 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:15,794 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-09-30 11:00:17,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:17,225 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-09-30 11:00:17,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-09-30 11:00:17,225 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-09-30 11:00:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:17,227 INFO L225 Difference]: With dead ends: 381 [2018-09-30 11:00:17,227 INFO L226 Difference]: Without dead ends: 379 [2018-09-30 11:00:17,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-09-30 11:00:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-09-30 11:00:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-09-30 11:00:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-09-30 11:00:17,230 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-09-30 11:00:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:17,230 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-09-30 11:00:17,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-09-30 11:00:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-09-30 11:00:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-09-30 11:00:17,231 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:17,232 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:17,232 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:17,232 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:17,232 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-09-30 11:00:17,232 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:17,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:17,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:17,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:17,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:17,879 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:17,879 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:17,885 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:18,058 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-09-30 11:00:18,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:18,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:18,693 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:18,693 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-09-30 11:00:18,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-09-30 11:00:18,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-09-30 11:00:18,694 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:18,695 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-09-30 11:00:20,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:20,057 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-09-30 11:00:20,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-09-30 11:00:20,058 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-09-30 11:00:20,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:20,059 INFO L225 Difference]: With dead ends: 385 [2018-09-30 11:00:20,059 INFO L226 Difference]: Without dead ends: 383 [2018-09-30 11:00:20,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-09-30 11:00:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-09-30 11:00:20,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-09-30 11:00:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-09-30 11:00:20,063 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-09-30 11:00:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:20,063 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-09-30 11:00:20,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-09-30 11:00:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-09-30 11:00:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-09-30 11:00:20,065 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:20,065 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:20,065 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:20,065 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:20,066 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-09-30 11:00:20,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:20,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:20,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:20,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:20,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:20,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:20,708 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:20,708 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:20,716 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:20,791 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:20,791 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:20,796 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:21,507 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:21,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-09-30 11:00:21,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-09-30 11:00:21,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-09-30 11:00:21,509 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:21,509 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-09-30 11:00:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:22,610 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-09-30 11:00:22,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-09-30 11:00:22,610 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-09-30 11:00:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:22,612 INFO L225 Difference]: With dead ends: 389 [2018-09-30 11:00:22,612 INFO L226 Difference]: Without dead ends: 387 [2018-09-30 11:00:22,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:22,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-09-30 11:00:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-09-30 11:00:22,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-09-30 11:00:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-09-30 11:00:22,615 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-09-30 11:00:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:22,616 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-09-30 11:00:22,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-09-30 11:00:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-09-30 11:00:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-09-30 11:00:22,617 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:22,617 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:22,618 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:22,618 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:22,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-09-30 11:00:22,618 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:22,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:22,618 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,618 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:22,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:23,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:23,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:23,300 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:23,457 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-09-30 11:00:23,457 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:23,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:24,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:24,112 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-09-30 11:00:24,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-09-30 11:00:24,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-09-30 11:00:24,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:24,114 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-09-30 11:00:25,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:25,386 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-09-30 11:00:25,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-09-30 11:00:25,386 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-09-30 11:00:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:25,387 INFO L225 Difference]: With dead ends: 393 [2018-09-30 11:00:25,388 INFO L226 Difference]: Without dead ends: 391 [2018-09-30 11:00:25,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-09-30 11:00:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-09-30 11:00:25,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-09-30 11:00:25,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-09-30 11:00:25,391 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-09-30 11:00:25,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:25,391 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-09-30 11:00:25,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-09-30 11:00:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-09-30 11:00:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-30 11:00:25,392 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:25,393 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:25,393 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:25,393 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:25,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-09-30 11:00:25,393 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:25,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:25,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:25,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:25,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:26,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,101 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:26,101 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:26,109 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:26,264 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-09-30 11:00:26,264 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:26,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:26,901 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:26,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:26,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-09-30 11:00:26,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-09-30 11:00:26,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-09-30 11:00:26,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:26,924 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-09-30 11:00:28,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:28,204 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-09-30 11:00:28,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-09-30 11:00:28,205 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-09-30 11:00:28,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:28,206 INFO L225 Difference]: With dead ends: 397 [2018-09-30 11:00:28,206 INFO L226 Difference]: Without dead ends: 395 [2018-09-30 11:00:28,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:28,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-09-30 11:00:28,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-09-30 11:00:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-09-30 11:00:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-09-30 11:00:28,210 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-09-30 11:00:28,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:28,210 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-09-30 11:00:28,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-09-30 11:00:28,210 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-09-30 11:00:28,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-09-30 11:00:28,212 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:28,212 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:28,212 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:28,212 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:28,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-09-30 11:00:28,213 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:28,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:28,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:28,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:28,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:28,892 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:28,892 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:28,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:28,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:29,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:29,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-09-30 11:00:29,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-09-30 11:00:29,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-09-30 11:00:29,660 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:29,660 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-09-30 11:00:30,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:30,988 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-09-30 11:00:30,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-09-30 11:00:30,988 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-09-30 11:00:30,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:30,990 INFO L225 Difference]: With dead ends: 401 [2018-09-30 11:00:30,990 INFO L226 Difference]: Without dead ends: 399 [2018-09-30 11:00:30,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:30,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-09-30 11:00:30,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-09-30 11:00:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-09-30 11:00:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-09-30 11:00:30,994 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-09-30 11:00:30,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:30,994 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-09-30 11:00:30,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-09-30 11:00:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-09-30 11:00:30,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-09-30 11:00:30,996 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:30,996 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:30,996 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:30,996 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:30,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-09-30 11:00:30,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:30,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:30,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:30,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:30,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:31,686 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:31,686 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:31,694 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:31,767 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:31,767 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:31,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:32,672 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:32,672 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-09-30 11:00:32,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-09-30 11:00:32,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-09-30 11:00:32,674 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:32,674 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-09-30 11:00:34,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:34,003 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-09-30 11:00:34,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-09-30 11:00:34,004 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-09-30 11:00:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:34,005 INFO L225 Difference]: With dead ends: 405 [2018-09-30 11:00:34,005 INFO L226 Difference]: Without dead ends: 403 [2018-09-30 11:00:34,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:34,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-09-30 11:00:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-09-30 11:00:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-09-30 11:00:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-09-30 11:00:34,009 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-09-30 11:00:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:34,009 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-09-30 11:00:34,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-09-30 11:00:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-09-30 11:00:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-09-30 11:00:34,011 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:34,012 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:34,012 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:34,012 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:34,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-09-30 11:00:34,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:34,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:34,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:34,013 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:34,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:34,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:34,732 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:34,741 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:34,919 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-09-30 11:00:34,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:34,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:35,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:35,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-09-30 11:00:35,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-09-30 11:00:35,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-09-30 11:00:35,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:35,617 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-09-30 11:00:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:36,987 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-09-30 11:00:36,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-09-30 11:00:36,988 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-09-30 11:00:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:36,989 INFO L225 Difference]: With dead ends: 409 [2018-09-30 11:00:36,989 INFO L226 Difference]: Without dead ends: 407 [2018-09-30 11:00:36,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:36,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-09-30 11:00:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-09-30 11:00:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-09-30 11:00:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-09-30 11:00:36,994 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-09-30 11:00:36,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:36,994 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-09-30 11:00:36,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-09-30 11:00:36,994 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-09-30 11:00:36,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-09-30 11:00:36,996 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:36,997 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:36,997 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:36,997 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:36,997 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-09-30 11:00:36,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:36,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:36,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:36,998 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:36,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:38,144 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:38,144 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:38,151 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:38,231 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:38,232 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:38,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:38,933 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:38,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-09-30 11:00:38,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 11:00:38,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 11:00:38,935 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:38,935 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-09-30 11:00:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:40,330 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-09-30 11:00:40,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 11:00:40,330 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-09-30 11:00:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:40,332 INFO L225 Difference]: With dead ends: 413 [2018-09-30 11:00:40,332 INFO L226 Difference]: Without dead ends: 411 [2018-09-30 11:00:40,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-09-30 11:00:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-09-30 11:00:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-09-30 11:00:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-09-30 11:00:40,336 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-09-30 11:00:40,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:40,337 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-09-30 11:00:40,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 11:00:40,337 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-09-30 11:00:40,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-09-30 11:00:40,339 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:40,339 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:40,339 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:40,339 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:40,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-09-30 11:00:40,340 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:40,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:40,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:40,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:40,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:41,157 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:41,158 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:41,164 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:00:41,354 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-09-30 11:00:41,354 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:41,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:42,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:42,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-09-30 11:00:42,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-09-30 11:00:42,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-09-30 11:00:42,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:42,197 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-09-30 11:00:43,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:43,748 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-09-30 11:00:43,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-09-30 11:00:43,748 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-09-30 11:00:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:43,749 INFO L225 Difference]: With dead ends: 417 [2018-09-30 11:00:43,749 INFO L226 Difference]: Without dead ends: 415 [2018-09-30 11:00:43,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:43,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-09-30 11:00:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-09-30 11:00:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-09-30 11:00:43,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-09-30 11:00:43,754 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-09-30 11:00:43,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:43,754 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-09-30 11:00:43,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-09-30 11:00:43,755 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-09-30 11:00:43,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-09-30 11:00:43,756 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:43,757 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:43,757 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:43,757 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-09-30 11:00:43,757 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:43,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:43,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:43,758 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:43,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:44,573 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:44,573 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:44,573 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:44,581 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:00:44,753 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-09-30 11:00:44,753 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:44,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:45,482 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:45,483 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-09-30 11:00:45,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-09-30 11:00:45,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-09-30 11:00:45,484 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:45,484 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-09-30 11:00:47,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:47,034 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-09-30 11:00:47,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-09-30 11:00:47,034 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-09-30 11:00:47,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:47,035 INFO L225 Difference]: With dead ends: 421 [2018-09-30 11:00:47,035 INFO L226 Difference]: Without dead ends: 419 [2018-09-30 11:00:47,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-09-30 11:00:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-09-30 11:00:47,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-09-30 11:00:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-09-30 11:00:47,038 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-09-30 11:00:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:47,038 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-09-30 11:00:47,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-09-30 11:00:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-09-30 11:00:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-30 11:00:47,039 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:47,040 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:47,040 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:47,040 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:47,040 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-09-30 11:00:47,040 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:47,040 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:47,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:47,041 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:47,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:48,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:48,115 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:48,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:48,201 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:48,938 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:48,938 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-09-30 11:00:48,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-09-30 11:00:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-09-30 11:00:48,939 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:48,939 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-09-30 11:00:50,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:50,577 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-09-30 11:00:50,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-09-30 11:00:50,578 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-09-30 11:00:50,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:50,578 INFO L225 Difference]: With dead ends: 425 [2018-09-30 11:00:50,578 INFO L226 Difference]: Without dead ends: 423 [2018-09-30 11:00:50,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-09-30 11:00:50,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-09-30 11:00:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-09-30 11:00:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-09-30 11:00:50,582 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-09-30 11:00:50,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:50,582 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-09-30 11:00:50,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-09-30 11:00:50,583 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-09-30 11:00:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-09-30 11:00:50,584 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:50,585 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:50,585 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:50,585 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:50,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-09-30 11:00:50,585 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:50,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:50,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:50,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:00:50,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:51,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:51,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:51,378 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:00:51,454 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:00:51,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:51,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:52,229 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:52,229 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-09-30 11:00:52,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-09-30 11:00:52,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-09-30 11:00:52,230 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:52,231 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-09-30 11:00:53,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:53,752 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-09-30 11:00:53,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-09-30 11:00:53,752 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-09-30 11:00:53,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:53,753 INFO L225 Difference]: With dead ends: 429 [2018-09-30 11:00:53,753 INFO L226 Difference]: Without dead ends: 427 [2018-09-30 11:00:53,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-09-30 11:00:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-09-30 11:00:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-09-30 11:00:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-09-30 11:00:53,756 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-09-30 11:00:53,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:53,756 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-09-30 11:00:53,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-09-30 11:00:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-09-30 11:00:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-09-30 11:00:53,758 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:53,758 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:53,758 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:53,758 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:53,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-09-30 11:00:53,759 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:53,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:53,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:53,759 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:53,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:54,600 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:54,600 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:54,610 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:00:54,800 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-09-30 11:00:54,800 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:54,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:55,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:55,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:55,570 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-09-30 11:00:55,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-09-30 11:00:55,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-09-30 11:00:55,572 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:55,572 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-09-30 11:00:57,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:00:57,125 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-09-30 11:00:57,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-09-30 11:00:57,126 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-09-30 11:00:57,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:00:57,127 INFO L225 Difference]: With dead ends: 433 [2018-09-30 11:00:57,127 INFO L226 Difference]: Without dead ends: 431 [2018-09-30 11:00:57,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:00:57,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-09-30 11:00:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-09-30 11:00:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-09-30 11:00:57,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-09-30 11:00:57,129 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-09-30 11:00:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:00:57,130 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-09-30 11:00:57,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-09-30 11:00:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-09-30 11:00:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-09-30 11:00:57,131 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:00:57,131 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-09-30 11:00:57,132 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:00:57,132 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:00:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-09-30 11:00:57,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:00:57,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:00:57,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:57,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:00:57,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:00:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:00:58,017 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:58,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:00:58,017 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:00:58,025 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:00:58,113 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:00:58,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:00:58,118 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:00:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:00:58,855 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:00:58,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-09-30 11:00:58,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-09-30 11:00:58,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-09-30 11:00:58,857 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:00:58,858 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-09-30 11:01:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:00,501 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-09-30 11:01:00,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-09-30 11:01:00,502 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-09-30 11:01:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:00,502 INFO L225 Difference]: With dead ends: 437 [2018-09-30 11:01:00,502 INFO L226 Difference]: Without dead ends: 435 [2018-09-30 11:01:00,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:00,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-09-30 11:01:00,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-09-30 11:01:00,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-09-30 11:01:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-09-30 11:01:00,505 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-09-30 11:01:00,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:00,506 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-09-30 11:01:00,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-09-30 11:01:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-09-30 11:01:00,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-09-30 11:01:00,507 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:00,507 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:00,508 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:00,508 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-09-30 11:01:00,508 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:00,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:00,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:00,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:00,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:01,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:01,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:01,354 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:01,552 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-09-30 11:01:01,553 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:01,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:02,299 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:02,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-09-30 11:01:02,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-09-30 11:01:02,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-09-30 11:01:02,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:02,301 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-09-30 11:01:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:04,076 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-09-30 11:01:04,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-09-30 11:01:04,076 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-09-30 11:01:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:04,077 INFO L225 Difference]: With dead ends: 441 [2018-09-30 11:01:04,077 INFO L226 Difference]: Without dead ends: 439 [2018-09-30 11:01:04,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-09-30 11:01:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-09-30 11:01:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-09-30 11:01:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-09-30 11:01:04,080 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-09-30 11:01:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:04,080 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-09-30 11:01:04,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-09-30 11:01:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-09-30 11:01:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-09-30 11:01:04,082 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:04,082 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:04,082 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:04,082 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:04,082 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-09-30 11:01:04,082 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:04,083 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:04,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:04,083 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:04,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:04,912 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:04,913 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:04,921 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:05,126 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-09-30 11:01:05,126 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:05,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:05,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:05,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-09-30 11:01:05,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-09-30 11:01:05,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-09-30 11:01:05,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:05,907 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 111 states. [2018-09-30 11:01:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:07,658 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-09-30 11:01:07,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-09-30 11:01:07,658 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-09-30 11:01:07,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:07,659 INFO L225 Difference]: With dead ends: 445 [2018-09-30 11:01:07,659 INFO L226 Difference]: Without dead ends: 443 [2018-09-30 11:01:07,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-09-30 11:01:07,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-09-30 11:01:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-09-30 11:01:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-09-30 11:01:07,662 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 438 [2018-09-30 11:01:07,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:07,662 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-09-30 11:01:07,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-09-30 11:01:07,662 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-09-30 11:01:07,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-09-30 11:01:07,663 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:07,664 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:07,664 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:07,664 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash 627490286, now seen corresponding path program 109 times [2018-09-30 11:01:07,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:07,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:07,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:07,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:07,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:08,709 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:08,709 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:08,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:08,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:09,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:09,629 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-09-30 11:01:09,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-09-30 11:01:09,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-09-30 11:01:09,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:09,632 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 112 states. [2018-09-30 11:01:11,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:11,530 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-09-30 11:01:11,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-09-30 11:01:11,531 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-09-30 11:01:11,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:11,531 INFO L225 Difference]: With dead ends: 449 [2018-09-30 11:01:11,531 INFO L226 Difference]: Without dead ends: 447 [2018-09-30 11:01:11,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:11,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-09-30 11:01:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-09-30 11:01:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-09-30 11:01:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-09-30 11:01:11,534 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 442 [2018-09-30 11:01:11,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:11,534 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-09-30 11:01:11,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-09-30 11:01:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-09-30 11:01:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-09-30 11:01:11,536 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:11,536 INFO L375 BasicCegarLoop]: trace histogram [110, 110, 110, 110, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:11,536 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:11,536 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:11,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1496016024, now seen corresponding path program 110 times [2018-09-30 11:01:11,536 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:11,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:11,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:11,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:11,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:12,438 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:12,438 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:12,438 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:12,447 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:12,534 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:12,535 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:12,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:13,552 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:13,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-09-30 11:01:13,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-09-30 11:01:13,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-09-30 11:01:13,555 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:13,555 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 113 states. [2018-09-30 11:01:15,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:15,371 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-09-30 11:01:15,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-09-30 11:01:15,371 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-09-30 11:01:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:15,372 INFO L225 Difference]: With dead ends: 453 [2018-09-30 11:01:15,372 INFO L226 Difference]: Without dead ends: 451 [2018-09-30 11:01:15,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:15,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-09-30 11:01:15,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-09-30 11:01:15,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-09-30 11:01:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-09-30 11:01:15,375 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 446 [2018-09-30 11:01:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:15,375 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-09-30 11:01:15,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-09-30 11:01:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-09-30 11:01:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-09-30 11:01:15,377 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:15,377 INFO L375 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:15,377 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:15,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 931702338, now seen corresponding path program 111 times [2018-09-30 11:01:15,378 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:15,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:15,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:15,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:16,355 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:16,355 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:16,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:16,588 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-09-30 11:01:16,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:16,594 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:17,429 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:17,429 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-09-30 11:01:17,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-09-30 11:01:17,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-09-30 11:01:17,431 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:17,431 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 114 states. [2018-09-30 11:01:19,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:19,601 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-09-30 11:01:19,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-09-30 11:01:19,602 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-09-30 11:01:19,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:19,603 INFO L225 Difference]: With dead ends: 457 [2018-09-30 11:01:19,603 INFO L226 Difference]: Without dead ends: 455 [2018-09-30 11:01:19,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:19,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-09-30 11:01:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-09-30 11:01:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-09-30 11:01:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-09-30 11:01:19,605 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 450 [2018-09-30 11:01:19,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:19,606 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-09-30 11:01:19,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-09-30 11:01:19,606 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-09-30 11:01:19,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-30 11:01:19,607 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:19,608 INFO L375 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:19,608 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:19,608 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:19,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1018757868, now seen corresponding path program 112 times [2018-09-30 11:01:19,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:19,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:19,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:19,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:19,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:20,560 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:20,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:20,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:20,567 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:20,658 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:20,658 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:20,664 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:21,567 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:21,568 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-09-30 11:01:21,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-09-30 11:01:21,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-09-30 11:01:21,569 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:21,569 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 115 states. [2018-09-30 11:01:23,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:23,797 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-09-30 11:01:23,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-09-30 11:01:23,798 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-09-30 11:01:23,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:23,799 INFO L225 Difference]: With dead ends: 461 [2018-09-30 11:01:23,799 INFO L226 Difference]: Without dead ends: 459 [2018-09-30 11:01:23,799 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-09-30 11:01:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-09-30 11:01:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-09-30 11:01:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-09-30 11:01:23,802 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 454 [2018-09-30 11:01:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:23,803 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-09-30 11:01:23,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-09-30 11:01:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-09-30 11:01:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-09-30 11:01:23,804 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:23,804 INFO L375 BasicCegarLoop]: trace histogram [113, 113, 113, 113, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:23,805 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:23,805 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1136065174, now seen corresponding path program 113 times [2018-09-30 11:01:23,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:23,805 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:23,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:23,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:23,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:24,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:24,821 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:24,821 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:24,828 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:25,053 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-09-30 11:01:25,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:25,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:26,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:26,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-09-30 11:01:26,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-09-30 11:01:26,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-09-30 11:01:26,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:26,042 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 116 states. [2018-09-30 11:01:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:28,176 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2018-09-30 11:01:28,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-09-30 11:01:28,176 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 458 [2018-09-30 11:01:28,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:28,177 INFO L225 Difference]: With dead ends: 465 [2018-09-30 11:01:28,177 INFO L226 Difference]: Without dead ends: 463 [2018-09-30 11:01:28,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:28,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-09-30 11:01:28,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-09-30 11:01:28,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-09-30 11:01:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2018-09-30 11:01:28,180 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 458 [2018-09-30 11:01:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:28,180 INFO L480 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2018-09-30 11:01:28,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-09-30 11:01:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2018-09-30 11:01:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-09-30 11:01:28,182 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:28,182 INFO L375 BasicCegarLoop]: trace histogram [114, 114, 114, 114, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:28,183 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:28,183 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:28,183 INFO L82 PathProgramCache]: Analyzing trace with hash 641535296, now seen corresponding path program 114 times [2018-09-30 11:01:28,183 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:28,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:28,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:28,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:28,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:29,268 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:29,268 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:29,294 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:29,502 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-09-30 11:01:29,503 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:29,509 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:30,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:30,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-09-30 11:01:30,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-09-30 11:01:30,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-09-30 11:01:30,335 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:30,335 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand 117 states. [2018-09-30 11:01:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:32,176 INFO L93 Difference]: Finished difference Result 469 states and 469 transitions. [2018-09-30 11:01:32,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-30 11:01:32,176 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 462 [2018-09-30 11:01:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:32,177 INFO L225 Difference]: With dead ends: 469 [2018-09-30 11:01:32,177 INFO L226 Difference]: Without dead ends: 467 [2018-09-30 11:01:32,177 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-09-30 11:01:32,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-09-30 11:01:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-09-30 11:01:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 467 transitions. [2018-09-30 11:01:32,180 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 467 transitions. Word has length 462 [2018-09-30 11:01:32,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:32,181 INFO L480 AbstractCegarLoop]: Abstraction has 467 states and 467 transitions. [2018-09-30 11:01:32,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-09-30 11:01:32,181 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 467 transitions. [2018-09-30 11:01:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-09-30 11:01:32,183 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:32,183 INFO L375 BasicCegarLoop]: trace histogram [115, 115, 115, 115, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:32,183 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:32,184 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:32,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1556462314, now seen corresponding path program 115 times [2018-09-30 11:01:32,184 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:32,184 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:32,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:32,184 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:32,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:33,128 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:33,129 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:33,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:33,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:34,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:34,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-09-30 11:01:34,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-09-30 11:01:34,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-09-30 11:01:34,335 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:34,335 INFO L87 Difference]: Start difference. First operand 467 states and 467 transitions. Second operand 118 states. [2018-09-30 11:01:36,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:36,617 INFO L93 Difference]: Finished difference Result 473 states and 473 transitions. [2018-09-30 11:01:36,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-09-30 11:01:36,617 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 466 [2018-09-30 11:01:36,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:36,618 INFO L225 Difference]: With dead ends: 473 [2018-09-30 11:01:36,618 INFO L226 Difference]: Without dead ends: 471 [2018-09-30 11:01:36,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-09-30 11:01:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2018-09-30 11:01:36,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-09-30 11:01:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 471 transitions. [2018-09-30 11:01:36,621 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 471 transitions. Word has length 466 [2018-09-30 11:01:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:36,622 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 471 transitions. [2018-09-30 11:01:36,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-09-30 11:01:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 471 transitions. [2018-09-30 11:01:36,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-09-30 11:01:36,624 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:36,624 INFO L375 BasicCegarLoop]: trace histogram [116, 116, 116, 116, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:36,624 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:36,624 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:36,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1635023980, now seen corresponding path program 116 times [2018-09-30 11:01:36,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:36,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:36,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:36,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:36,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:37,608 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:37,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:37,609 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:37,617 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 11:01:37,703 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 11:01:37,704 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:37,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:38,581 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:38,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-09-30 11:01:38,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-09-30 11:01:38,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-09-30 11:01:38,583 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:38,583 INFO L87 Difference]: Start difference. First operand 471 states and 471 transitions. Second operand 119 states. [2018-09-30 11:01:40,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:40,718 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2018-09-30 11:01:40,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-09-30 11:01:40,718 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 470 [2018-09-30 11:01:40,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:40,719 INFO L225 Difference]: With dead ends: 477 [2018-09-30 11:01:40,719 INFO L226 Difference]: Without dead ends: 475 [2018-09-30 11:01:40,719 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-09-30 11:01:40,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-09-30 11:01:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-09-30 11:01:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2018-09-30 11:01:40,722 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 470 [2018-09-30 11:01:40,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:40,722 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2018-09-30 11:01:40,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-09-30 11:01:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2018-09-30 11:01:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-09-30 11:01:40,724 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:40,724 INFO L375 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:40,724 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:40,725 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:40,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2121734338, now seen corresponding path program 117 times [2018-09-30 11:01:40,725 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:40,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:40,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:40,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:40,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:41,710 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:41,710 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:41,717 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 11:01:41,946 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-09-30 11:01:41,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:41,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:42,787 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:42,807 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:42,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-09-30 11:01:42,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-09-30 11:01:42,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-09-30 11:01:42,809 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:42,809 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand 120 states. [2018-09-30 11:01:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:44,927 INFO L93 Difference]: Finished difference Result 481 states and 481 transitions. [2018-09-30 11:01:44,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-09-30 11:01:44,927 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 474 [2018-09-30 11:01:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:44,928 INFO L225 Difference]: With dead ends: 481 [2018-09-30 11:01:44,928 INFO L226 Difference]: Without dead ends: 479 [2018-09-30 11:01:44,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:44,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-09-30 11:01:44,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-09-30 11:01:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-09-30 11:01:44,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2018-09-30 11:01:44,931 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 474 [2018-09-30 11:01:44,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:44,932 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2018-09-30 11:01:44,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-09-30 11:01:44,932 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2018-09-30 11:01:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-09-30 11:01:44,933 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:44,933 INFO L375 BasicCegarLoop]: trace histogram [118, 118, 118, 118, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:44,934 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:44,934 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:44,934 INFO L82 PathProgramCache]: Analyzing trace with hash 444098024, now seen corresponding path program 118 times [2018-09-30 11:01:44,934 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:44,934 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:44,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:44,935 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:44,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:44,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:45,949 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:45,950 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:45,957 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 11:01:46,051 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 11:01:46,052 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:46,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:46,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:46,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-09-30 11:01:46,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-09-30 11:01:46,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-09-30 11:01:46,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:46,932 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand 121 states. [2018-09-30 11:01:49,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:49,284 INFO L93 Difference]: Finished difference Result 485 states and 485 transitions. [2018-09-30 11:01:49,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-09-30 11:01:49,284 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 478 [2018-09-30 11:01:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:49,285 INFO L225 Difference]: With dead ends: 485 [2018-09-30 11:01:49,285 INFO L226 Difference]: Without dead ends: 483 [2018-09-30 11:01:49,286 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:49,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-09-30 11:01:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-09-30 11:01:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-09-30 11:01:49,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 483 transitions. [2018-09-30 11:01:49,289 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 483 transitions. Word has length 478 [2018-09-30 11:01:49,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:49,290 INFO L480 AbstractCegarLoop]: Abstraction has 483 states and 483 transitions. [2018-09-30 11:01:49,290 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-09-30 11:01:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 483 transitions. [2018-09-30 11:01:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-09-30 11:01:49,292 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:49,292 INFO L375 BasicCegarLoop]: trace histogram [119, 119, 119, 119, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:49,292 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:49,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:49,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1663795310, now seen corresponding path program 119 times [2018-09-30 11:01:49,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:49,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:49,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:49,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:49,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:50,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:50,350 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:50,357 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 11:01:50,604 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-09-30 11:01:50,604 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:50,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:51,479 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:51,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-09-30 11:01:51,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-09-30 11:01:51,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-09-30 11:01:51,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:51,482 INFO L87 Difference]: Start difference. First operand 483 states and 483 transitions. Second operand 122 states. [2018-09-30 11:01:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:53,853 INFO L93 Difference]: Finished difference Result 489 states and 489 transitions. [2018-09-30 11:01:53,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-09-30 11:01:53,853 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 482 [2018-09-30 11:01:53,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:53,854 INFO L225 Difference]: With dead ends: 489 [2018-09-30 11:01:53,854 INFO L226 Difference]: Without dead ends: 487 [2018-09-30 11:01:53,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:53,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-09-30 11:01:53,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2018-09-30 11:01:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2018-09-30 11:01:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 487 transitions. [2018-09-30 11:01:53,857 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 487 transitions. Word has length 482 [2018-09-30 11:01:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:53,857 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 487 transitions. [2018-09-30 11:01:53,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-09-30 11:01:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 487 transitions. [2018-09-30 11:01:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-09-30 11:01:53,859 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:53,859 INFO L375 BasicCegarLoop]: trace histogram [120, 120, 120, 120, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:53,859 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:53,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:53,860 INFO L82 PathProgramCache]: Analyzing trace with hash -86526916, now seen corresponding path program 120 times [2018-09-30 11:01:53,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:53,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:53,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:53,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:53,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:55,097 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:55,097 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:55,104 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 11:01:55,327 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-09-30 11:01:55,327 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 11:01:55,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:01:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:56,201 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:01:56,202 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-09-30 11:01:56,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-09-30 11:01:56,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-09-30 11:01:56,204 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:01:56,204 INFO L87 Difference]: Start difference. First operand 487 states and 487 transitions. Second operand 123 states. [2018-09-30 11:01:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:01:58,135 INFO L93 Difference]: Finished difference Result 493 states and 493 transitions. [2018-09-30 11:01:58,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-09-30 11:01:58,136 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 486 [2018-09-30 11:01:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:01:58,137 INFO L225 Difference]: With dead ends: 493 [2018-09-30 11:01:58,137 INFO L226 Difference]: Without dead ends: 491 [2018-09-30 11:01:58,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:01:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-09-30 11:01:58,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2018-09-30 11:01:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-09-30 11:01:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2018-09-30 11:01:58,140 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 486 [2018-09-30 11:01:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:01:58,140 INFO L480 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2018-09-30 11:01:58,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-09-30 11:01:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2018-09-30 11:01:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-09-30 11:01:58,142 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:01:58,142 INFO L375 BasicCegarLoop]: trace histogram [121, 121, 121, 121, 1, 1, 1, 1, 1, 1] [2018-09-30 11:01:58,142 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:01:58,142 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:01:58,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2055437338, now seen corresponding path program 121 times [2018-09-30 11:01:58,142 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:01:58,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:01:58,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:58,143 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 11:01:58,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:01:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:01:59,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 11:01:59,181 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 11:01:59,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:01:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 11:01:59,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 11:02:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 11:02:00,446 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 11:02:00,446 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-09-30 11:02:00,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-09-30 11:02:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-09-30 11:02:00,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 11:02:00,448 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 124 states. [2018-09-30 11:02:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 11:02:02,790 INFO L93 Difference]: Finished difference Result 497 states and 497 transitions. [2018-09-30 11:02:02,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-09-30 11:02:02,790 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 490 [2018-09-30 11:02:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 11:02:02,792 INFO L225 Difference]: With dead ends: 497 [2018-09-30 11:02:02,792 INFO L226 Difference]: Without dead ends: 495 [2018-09-30 11:02:02,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 11:02:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-09-30 11:02:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-09-30 11:02:02,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-09-30 11:02:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 495 transitions. [2018-09-30 11:02:02,796 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 495 transitions. Word has length 490 [2018-09-30 11:02:02,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 11:02:02,796 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 495 transitions. [2018-09-30 11:02:02,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-09-30 11:02:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 495 transitions. [2018-09-30 11:02:02,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-09-30 11:02:02,799 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 11:02:02,799 INFO L375 BasicCegarLoop]: trace histogram [122, 122, 122, 122, 1, 1, 1, 1, 1, 1] [2018-09-30 11:02:02,799 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 11:02:02,799 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 11:02:02,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1937936752, now seen corresponding path program 122 times [2018-09-30 11:02:02,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 11:02:02,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 11:02:02,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:02,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 11:02:02,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 11:02:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-30 11:02:03,008 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-30 11:02:03,011 WARN L206 ceAbstractionStarter]: Timeout [2018-09-30 11:02:03,012 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 11:02:03 BoogieIcfgContainer [2018-09-30 11:02:03,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 11:02:03,013 INFO L168 Benchmark]: Toolchain (without parser) took 241585.18 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 390.6 MB). Free memory was 1.5 GB in the beginning and 919.8 MB in the end (delta: 545.8 MB). Peak memory consumption was 936.4 MB. Max. memory is 7.1 GB. [2018-09-30 11:02:03,014 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 11:02:03,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.38 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 11:02:03,015 INFO L168 Benchmark]: Boogie Preprocessor took 23.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 11:02:03,015 INFO L168 Benchmark]: RCFGBuilder took 313.94 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 11:02:03,016 INFO L168 Benchmark]: TraceAbstraction took 241196.17 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 390.6 MB). Free memory was 1.4 GB in the beginning and 919.8 MB in the end (delta: 524.7 MB). Peak memory consumption was 915.3 MB. Max. memory is 7.1 GB. [2018-09-30 11:02:03,018 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 0.22 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 45.38 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 23.41 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 313.94 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 241196.17 ms. Allocated memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: 390.6 MB). Free memory was 1.4 GB in the beginning and 919.8 MB in the end (delta: 524.7 MB). Peak memory consumption was 915.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 41). Cancelled while BasicCegarLoop was analyzing trace of length 495 with TraceHistMax 122, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while NestedInterpolantsBuilder was constructing predicates for 493 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 241.1s OverallTime, 124 OverallIterations, 122 TraceHistogramMax, 96.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1107 SDtfs, 768 SDslu, 25934 SDs, 0 SdLazy, 11054 SolverSat, 255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37756 GetRequests, 30252 SyntacticMatches, 0 SemanticMatches, 7504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=495occurred in iteration=123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 123 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 10.7s SatisfiabilityAnalysisTime, 121.8s InterpolantComputationTime, 60512 NumberOfCodeBlocks, 60512 NumberOfCodeBlocksAsserted, 3984 NumberOfCheckSat, 60268 ConstructedInterpolants, 0 QuantifiedInterpolants, 59063840 SizeOfPredicates, 121 NumberOfNonLiveVariables, 45738 ConjunctsInSsa, 7623 ConjunctsInUnsatCore, 244 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2376682 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_11-02-03-028.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-ArraysIntegefied.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_11-02-03-028.csv Completed graceful shutdown