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 0.1.23-1cc990c [2018-10-01 01:03:19,953 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-01 01:03:19,956 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-01 01:03:19,970 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-01 01:03:20,015 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-01 01:03:20,029 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-01 01:03:20,030 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-01 01:03:20,030 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-01 01:03:20,031 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-01 01:03:20,031 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-01 01:03:20,031 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-01 01:03:20,032 INFO L133 SettingsManager]: * Use SBE=true [2018-10-01 01:03:20,032 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-01 01:03:20,032 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-01 01:03:20,032 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-01 01:03:20,032 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-01 01:03:20,033 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-01 01:03:20,033 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-01 01:03:20,033 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-01 01:03:20,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-01 01:03:20,033 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-01 01:03:20,033 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-01 01:03:20,034 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-01 01:03:20,034 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-01 01:03:20,034 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-01 01:03:20,034 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-01 01:03:20,034 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-01 01:03:20,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:03:20,035 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-01 01:03:20,035 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-01 01:03:20,035 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-01 01:03:20,035 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-01 01:03:20,036 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-01 01:03:20,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-01 01:03:20,036 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-01 01:03:20,036 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-01 01:03:20,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-01 01:03:20,094 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-01 01:03:20,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-01 01:03:20,102 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-01 01:03:20,103 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-01 01:03:20,104 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl [2018-10-01 01:03:20,104 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-ArraysIntegefied.bpl' [2018-10-01 01:03:20,150 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-01 01:03:20,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-01 01:03:20,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-01 01:03:20,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-01 01:03:20,154 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-01 01:03:20,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,193 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-01 01:03:20,194 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-01 01:03:20,194 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-01 01:03:20,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-01 01:03:20,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-01 01:03:20,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-01 01:03:20,197 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-01 01:03:20,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... [2018-10-01 01:03:20,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-01 01:03:20,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-01 01:03:20,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-01 01:03:20,225 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-01 01:03:20,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-01 01:03:20,303 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-10-01 01:03:20,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-01 01:03:20,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-01 01:03:20,572 INFO L345 CfgBuilder]: Using library mode [2018-10-01 01:03:20,572 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:03:20 BoogieIcfgContainer [2018-10-01 01:03:20,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-01 01:03:20,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-01 01:03:20,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-01 01:03:20,577 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-01 01:03:20,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.10 01:03:20" (1/2) ... [2018-10-01 01:03:20,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68756594 and model type Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.10 01:03:20, skipping insertion in model container [2018-10-01 01:03:20,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.10 01:03:20" (2/2) ... [2018-10-01 01:03:20,581 INFO L112 eAbstractionObserver]: Analyzing ICFG Luxembourg-ArraysIntegefied.bpl [2018-10-01 01:03:20,591 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-01 01:03:20,600 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-01 01:03:20,651 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-01 01:03:20,652 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-01 01:03:20,652 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-01 01:03:20,652 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-01 01:03:20,653 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-01 01:03:20,653 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-01 01:03:20,653 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-01 01:03:20,653 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-01 01:03:20,653 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-01 01:03:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-10-01 01:03:20,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 01:03:20,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:20,677 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-01 01:03:20,679 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:20,686 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:20,686 INFO L82 PathProgramCache]: Analyzing trace with hash 890493448, now seen corresponding path program 1 times [2018-10-01 01:03:20,689 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:20,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:20,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:20,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:20,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:20,913 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:03:20,913 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 01:03:20,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:03:20,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:03:20,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:20,968 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2018-10-01 01:03:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:21,137 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2018-10-01 01:03:21,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:03:21,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-01 01:03:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:21,153 INFO L225 Difference]: With dead ends: 22 [2018-10-01 01:03:21,153 INFO L226 Difference]: Without dead ends: 10 [2018-10-01 01:03:21,157 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:03:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-01 01:03:21,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-01 01:03:21,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-01 01:03:21,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-01 01:03:21,194 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2018-10-01 01:03:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:21,194 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-01 01:03:21,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:03:21,196 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-01 01:03:21,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-01 01:03:21,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:21,196 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-01 01:03:21,197 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:21,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:21,197 INFO L82 PathProgramCache]: Analyzing trace with hash 892342412, now seen corresponding path program 1 times [2018-10-01 01:03:21,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:21,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:21,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:21,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:21,245 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-01 01:03:21,246 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-01 01:03:21,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-01 01:03:21,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-01 01:03:21,249 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:21,249 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2018-10-01 01:03:21,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:21,282 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-01 01:03:21,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-01 01:03:21,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-01 01:03:21,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:21,283 INFO L225 Difference]: With dead ends: 13 [2018-10-01 01:03:21,284 INFO L226 Difference]: Without dead ends: 11 [2018-10-01 01:03:21,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-10-01 01:03:21,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-01 01:03:21,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-01 01:03:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-01 01:03:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-01 01:03:21,288 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 6 [2018-10-01 01:03:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:21,288 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-01 01:03:21,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-01 01:03:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-01 01:03:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-01 01:03:21,289 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:21,289 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:21,289 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:21,290 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:21,290 INFO L82 PathProgramCache]: Analyzing trace with hash -391235530, now seen corresponding path program 1 times [2018-10-01 01:03:21,290 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:21,290 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:21,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:21,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:21,386 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:21,386 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:21,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:21,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:21,536 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:21,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-01 01:03:21,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-01 01:03:21,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-01 01:03:21,538 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:21,538 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-10-01 01:03:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:21,706 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-01 01:03:21,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-01 01:03:21,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-10-01 01:03:21,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:21,707 INFO L225 Difference]: With dead ends: 17 [2018-10-01 01:03:21,708 INFO L226 Difference]: Without dead ends: 15 [2018-10-01 01:03:21,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-01 01:03:21,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-01 01:03:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-01 01:03:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-01 01:03:21,712 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-10-01 01:03:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:21,712 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-01 01:03:21,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-01 01:03:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-01 01:03:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-01 01:03:21,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:21,714 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:21,714 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:21,714 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash -602113312, now seen corresponding path program 2 times [2018-10-01 01:03:21,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:21,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:21,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:21,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:21,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:21,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:21,790 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:21,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:21,844 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:21,844 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:21,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:22,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:22,062 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:22,062 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-01 01:03:22,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-01 01:03:22,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-01 01:03:22,063 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:22,063 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 5 states. [2018-10-01 01:03:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:22,144 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-01 01:03:22,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-01 01:03:22,144 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-10-01 01:03:22,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:22,146 INFO L225 Difference]: With dead ends: 21 [2018-10-01 01:03:22,146 INFO L226 Difference]: Without dead ends: 19 [2018-10-01 01:03:22,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:22,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-01 01:03:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-01 01:03:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-01 01:03:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-01 01:03:22,151 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-10-01 01:03:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:22,152 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-01 01:03:22,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-01 01:03:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-01 01:03:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-01 01:03:22,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:22,154 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:22,154 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:22,154 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:22,154 INFO L82 PathProgramCache]: Analyzing trace with hash 334846090, now seen corresponding path program 3 times [2018-10-01 01:03:22,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:22,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:22,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:22,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:22,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:22,233 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:22,233 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:22,244 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:22,267 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-01 01:03:22,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:22,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:22,441 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:22,442 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-01 01:03:22,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-01 01:03:22,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-01 01:03:22,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:22,443 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-10-01 01:03:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:22,500 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-01 01:03:22,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-01 01:03:22,502 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-10-01 01:03:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:22,502 INFO L225 Difference]: With dead ends: 25 [2018-10-01 01:03:22,503 INFO L226 Difference]: Without dead ends: 23 [2018-10-01 01:03:22,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-01 01:03:22,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-01 01:03:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-01 01:03:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-10-01 01:03:22,506 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-10-01 01:03:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:22,507 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-10-01 01:03:22,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-01 01:03:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-10-01 01:03:22,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-01 01:03:22,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:22,508 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:22,509 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:22,509 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:22,509 INFO L82 PathProgramCache]: Analyzing trace with hash -747417292, now seen corresponding path program 4 times [2018-10-01 01:03:22,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:22,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:22,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:22,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:22,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:22,597 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:22,597 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 [2018-10-01 01:03:22,613 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:22,627 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:22,627 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:22,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:22,776 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:22,776 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-01 01:03:22,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-01 01:03:22,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-01 01:03:22,777 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:22,777 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2018-10-01 01:03:23,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:23,162 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-01 01:03:23,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-01 01:03:23,163 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-10-01 01:03:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:23,164 INFO L225 Difference]: With dead ends: 29 [2018-10-01 01:03:23,164 INFO L226 Difference]: Without dead ends: 27 [2018-10-01 01:03:23,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:23,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-10-01 01:03:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-10-01 01:03:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-10-01 01:03:23,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-10-01 01:03:23,168 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 22 [2018-10-01 01:03:23,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:23,169 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-10-01 01:03:23,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-01 01:03:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-10-01 01:03:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-01 01:03:23,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:23,170 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:23,170 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:23,170 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:23,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1016128734, now seen corresponding path program 5 times [2018-10-01 01:03:23,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:23,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:23,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:23,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:23,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:23,374 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:23,374 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:23,391 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:23,441 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-01 01:03:23,442 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:23,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:23,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:23,545 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-01 01:03:23,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-01 01:03:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-01 01:03:23,546 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:23,546 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-10-01 01:03:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:23,600 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-01 01:03:23,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-01 01:03:23,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-10-01 01:03:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:23,601 INFO L225 Difference]: With dead ends: 33 [2018-10-01 01:03:23,601 INFO L226 Difference]: Without dead ends: 31 [2018-10-01 01:03:23,602 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:23,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-01 01:03:23,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-01 01:03:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-01 01:03:23,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-01 01:03:23,606 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2018-10-01 01:03:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:23,606 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-01 01:03:23,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-01 01:03:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-01 01:03:23,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-01 01:03:23,607 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:23,607 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:23,608 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:23,608 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:23,608 INFO L82 PathProgramCache]: Analyzing trace with hash -267873400, now seen corresponding path program 6 times [2018-10-01 01:03:23,608 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:23,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:23,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:23,609 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:23,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:23,696 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:23,696 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:23,710 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:23,752 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-01 01:03:23,752 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:23,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:24,015 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:24,015 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-01 01:03:24,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-01 01:03:24,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-01 01:03:24,016 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:24,016 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2018-10-01 01:03:24,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:24,112 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-01 01:03:24,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-01 01:03:24,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2018-10-01 01:03:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:24,114 INFO L225 Difference]: With dead ends: 37 [2018-10-01 01:03:24,114 INFO L226 Difference]: Without dead ends: 35 [2018-10-01 01:03:24,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-01 01:03:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-10-01 01:03:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-10-01 01:03:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-10-01 01:03:24,119 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2018-10-01 01:03:24,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:24,119 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-10-01 01:03:24,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-01 01:03:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-10-01 01:03:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-01 01:03:24,121 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:24,121 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:24,121 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:24,121 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:24,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1386947278, now seen corresponding path program 7 times [2018-10-01 01:03:24,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:24,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:24,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,123 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:24,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:24,231 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:24,231 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:24,231 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:24,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:24,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:24,452 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:24,452 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-01 01:03:24,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-01 01:03:24,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-01 01:03:24,453 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:24,453 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 10 states. [2018-10-01 01:03:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:24,555 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-10-01 01:03:24,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-01 01:03:24,556 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-10-01 01:03:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:24,557 INFO L225 Difference]: With dead ends: 41 [2018-10-01 01:03:24,557 INFO L226 Difference]: Without dead ends: 39 [2018-10-01 01:03:24,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-01 01:03:24,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-10-01 01:03:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-01 01:03:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-01 01:03:24,562 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 34 [2018-10-01 01:03:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:24,563 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-01 01:03:24,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-01 01:03:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-01 01:03:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-01 01:03:24,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:24,564 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:24,565 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:24,565 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash -223329828, now seen corresponding path program 8 times [2018-10-01 01:03:24,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:24,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:24,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:24,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:24,665 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:24,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:24,676 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:24,705 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:24,706 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:24,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:24,822 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:24,822 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-01 01:03:24,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-01 01:03:24,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-01 01:03:24,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:24,823 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 11 states. [2018-10-01 01:03:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:24,884 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-10-01 01:03:24,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-01 01:03:24,886 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2018-10-01 01:03:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:24,888 INFO L225 Difference]: With dead ends: 45 [2018-10-01 01:03:24,888 INFO L226 Difference]: Without dead ends: 43 [2018-10-01 01:03:24,888 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:24,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-01 01:03:24,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-01 01:03:24,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-01 01:03:24,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-10-01 01:03:24,894 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 38 [2018-10-01 01:03:24,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:24,895 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-10-01 01:03:24,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-01 01:03:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-10-01 01:03:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-01 01:03:24,896 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:24,896 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:24,897 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:24,897 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:24,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1659551354, now seen corresponding path program 9 times [2018-10-01 01:03:24,897 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:24,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:24,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:24,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:25,046 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:25,046 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:25,054 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:25,083 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-10-01 01:03:25,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:25,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:25,251 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:25,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-01 01:03:25,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-01 01:03:25,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-01 01:03:25,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:25,253 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 12 states. [2018-10-01 01:03:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:25,467 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-01 01:03:25,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-01 01:03:25,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2018-10-01 01:03:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:25,468 INFO L225 Difference]: With dead ends: 49 [2018-10-01 01:03:25,469 INFO L226 Difference]: Without dead ends: 47 [2018-10-01 01:03:25,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-01 01:03:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-01 01:03:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-01 01:03:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2018-10-01 01:03:25,474 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 42 [2018-10-01 01:03:25,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:25,474 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2018-10-01 01:03:25,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-01 01:03:25,474 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2018-10-01 01:03:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-01 01:03:25,476 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:25,476 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:25,476 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:25,476 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:25,477 INFO L82 PathProgramCache]: Analyzing trace with hash -2009179088, now seen corresponding path program 10 times [2018-10-01 01:03:25,477 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:25,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:25,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:25,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:25,608 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:25,608 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:25,617 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:25,630 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:25,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:25,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:25,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:25,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-01 01:03:25,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-01 01:03:25,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-01 01:03:25,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:25,781 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 13 states. [2018-10-01 01:03:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:25,930 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-10-01 01:03:25,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-01 01:03:25,934 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2018-10-01 01:03:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:25,934 INFO L225 Difference]: With dead ends: 53 [2018-10-01 01:03:25,935 INFO L226 Difference]: Without dead ends: 51 [2018-10-01 01:03:25,935 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-10-01 01:03:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-01 01:03:25,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-01 01:03:25,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-01 01:03:25,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-01 01:03:25,940 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2018-10-01 01:03:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:25,940 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-01 01:03:25,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-01 01:03:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-01 01:03:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-01 01:03:25,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:25,941 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:25,942 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:25,942 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:25,942 INFO L82 PathProgramCache]: Analyzing trace with hash 782635482, now seen corresponding path program 11 times [2018-10-01 01:03:25,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:25,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:25,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:25,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:26,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:26,093 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:26,102 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:26,121 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-10-01 01:03:26,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:26,124 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:26,361 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:26,361 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-01 01:03:26,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-01 01:03:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-01 01:03:26,362 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:26,362 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 14 states. [2018-10-01 01:03:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:26,468 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-10-01 01:03:26,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-01 01:03:26,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 50 [2018-10-01 01:03:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:26,470 INFO L225 Difference]: With dead ends: 57 [2018-10-01 01:03:26,470 INFO L226 Difference]: Without dead ends: 55 [2018-10-01 01:03:26,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:26,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-10-01 01:03:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-10-01 01:03:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-10-01 01:03:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-10-01 01:03:26,479 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 50 [2018-10-01 01:03:26,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:26,479 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-10-01 01:03:26,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-01 01:03:26,480 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-10-01 01:03:26,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-01 01:03:26,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:26,481 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:26,481 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:26,481 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:26,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1233576580, now seen corresponding path program 12 times [2018-10-01 01:03:26,482 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:26,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:26,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:26,485 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:26,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:26,617 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:26,617 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:26,624 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:26,777 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-10-01 01:03:26,777 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:26,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:27,091 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:27,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-01 01:03:27,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-01 01:03:27,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-01 01:03:27,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:27,092 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 15 states. [2018-10-01 01:03:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:27,197 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-10-01 01:03:27,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-01 01:03:27,197 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2018-10-01 01:03:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:27,198 INFO L225 Difference]: With dead ends: 61 [2018-10-01 01:03:27,198 INFO L226 Difference]: Without dead ends: 59 [2018-10-01 01:03:27,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:27,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-10-01 01:03:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2018-10-01 01:03:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-10-01 01:03:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-10-01 01:03:27,202 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 54 [2018-10-01 01:03:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:27,204 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-10-01 01:03:27,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-01 01:03:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-10-01 01:03:27,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-01 01:03:27,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:27,205 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:27,205 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:27,205 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:27,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1893420590, now seen corresponding path program 13 times [2018-10-01 01:03:27,206 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:27,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:27,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:27,207 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:27,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:27,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:27,370 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:27,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:27,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:29,075 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:29,075 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-01 01:03:29,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-01 01:03:29,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-01 01:03:29,076 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:29,076 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 16 states. [2018-10-01 01:03:29,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:29,171 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-10-01 01:03:29,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-01 01:03:29,172 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-10-01 01:03:29,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:29,173 INFO L225 Difference]: With dead ends: 65 [2018-10-01 01:03:29,173 INFO L226 Difference]: Without dead ends: 63 [2018-10-01 01:03:29,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:03:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-10-01 01:03:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-10-01 01:03:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-10-01 01:03:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-10-01 01:03:29,178 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 58 [2018-10-01 01:03:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:29,178 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-10-01 01:03:29,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-01 01:03:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-10-01 01:03:29,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-01 01:03:29,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:29,180 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:29,180 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:29,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:29,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1151478568, now seen corresponding path program 14 times [2018-10-01 01:03:29,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:29,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:29,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:29,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:29,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:29,319 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:29,319 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:29,332 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:29,373 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:29,374 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:29,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:29,789 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:29,790 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-01 01:03:29,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-01 01:03:29,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-01 01:03:29,791 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:29,791 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 17 states. [2018-10-01 01:03:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:30,014 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-10-01 01:03:30,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-01 01:03:30,014 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2018-10-01 01:03:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:30,015 INFO L225 Difference]: With dead ends: 69 [2018-10-01 01:03:30,015 INFO L226 Difference]: Without dead ends: 67 [2018-10-01 01:03:30,016 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-10-01 01:03:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-10-01 01:03:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-10-01 01:03:30,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-10-01 01:03:30,022 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 62 [2018-10-01 01:03:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:30,022 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-10-01 01:03:30,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-01 01:03:30,022 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-10-01 01:03:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-01 01:03:30,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:30,024 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:30,024 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:30,024 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1586034306, now seen corresponding path program 15 times [2018-10-01 01:03:30,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:30,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:30,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,025 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:30,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:30,174 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:30,174 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:30,183 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:30,243 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-10-01 01:03:30,243 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:30,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:30,578 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:30,578 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-01 01:03:30,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-01 01:03:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-01 01:03:30,579 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:30,579 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 18 states. [2018-10-01 01:03:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:30,688 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-10-01 01:03:30,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-01 01:03:30,688 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2018-10-01 01:03:30,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:30,689 INFO L225 Difference]: With dead ends: 73 [2018-10-01 01:03:30,689 INFO L226 Difference]: Without dead ends: 71 [2018-10-01 01:03:30,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-10-01 01:03:30,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-10-01 01:03:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-10-01 01:03:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-10-01 01:03:30,695 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 66 [2018-10-01 01:03:30,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:30,696 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-10-01 01:03:30,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-01 01:03:30,696 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-10-01 01:03:30,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-01 01:03:30,697 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:30,697 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:30,697 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:30,698 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:30,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1318531884, now seen corresponding path program 16 times [2018-10-01 01:03:30,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:30,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:30,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:30,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:30,891 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:30,891 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:30,899 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:30,926 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:30,927 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:30,929 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:31,538 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:31,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-10-01 01:03:31,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-01 01:03:31,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-01 01:03:31,539 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:31,539 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 19 states. [2018-10-01 01:03:31,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:31,683 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2018-10-01 01:03:31,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-01 01:03:31,684 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 70 [2018-10-01 01:03:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:31,684 INFO L225 Difference]: With dead ends: 77 [2018-10-01 01:03:31,684 INFO L226 Difference]: Without dead ends: 75 [2018-10-01 01:03:31,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-10-01 01:03:31,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-10-01 01:03:31,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-10-01 01:03:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-10-01 01:03:31,688 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 70 [2018-10-01 01:03:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:31,688 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-10-01 01:03:31,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-01 01:03:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-10-01 01:03:31,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-01 01:03:31,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:31,690 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:31,690 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:31,690 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:31,690 INFO L82 PathProgramCache]: Analyzing trace with hash -561837354, now seen corresponding path program 17 times [2018-10-01 01:03:31,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:31,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:31,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:31,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:31,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:32,077 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:32,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:32,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:32,086 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:32,116 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-10-01 01:03:32,116 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:32,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:32,374 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:32,374 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-10-01 01:03:32,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-01 01:03:32,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-01 01:03:32,374 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:32,375 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 20 states. [2018-10-01 01:03:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:32,615 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-10-01 01:03:32,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-01 01:03:32,616 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 74 [2018-10-01 01:03:32,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:32,617 INFO L225 Difference]: With dead ends: 81 [2018-10-01 01:03:32,617 INFO L226 Difference]: Without dead ends: 79 [2018-10-01 01:03:32,617 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-10-01 01:03:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2018-10-01 01:03:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-10-01 01:03:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-10-01 01:03:32,622 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 74 [2018-10-01 01:03:32,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:32,623 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-10-01 01:03:32,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-01 01:03:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-10-01 01:03:32,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-01 01:03:32,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:32,624 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:32,624 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:32,625 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:32,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1611070848, now seen corresponding path program 18 times [2018-10-01 01:03:32,625 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:32,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:32,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:32,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:32,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:32,791 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:32,791 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:32,800 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:32,826 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-10-01 01:03:32,826 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:32,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:32,956 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:32,977 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:32,977 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-10-01 01:03:32,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-01 01:03:32,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-01 01:03:32,978 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:32,978 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 21 states. [2018-10-01 01:03:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:33,094 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-10-01 01:03:33,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-01 01:03:33,094 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 78 [2018-10-01 01:03:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:33,095 INFO L225 Difference]: With dead ends: 85 [2018-10-01 01:03:33,095 INFO L226 Difference]: Without dead ends: 83 [2018-10-01 01:03:33,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-10-01 01:03:33,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-10-01 01:03:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-10-01 01:03:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-10-01 01:03:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2018-10-01 01:03:33,099 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 78 [2018-10-01 01:03:33,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:33,100 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2018-10-01 01:03:33,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-01 01:03:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2018-10-01 01:03:33,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-01 01:03:33,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:33,101 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:33,101 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:33,102 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1013085398, now seen corresponding path program 19 times [2018-10-01 01:03:33,102 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:33,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:33,103 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:33,263 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:33,263 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:33,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:33,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:33,528 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:33,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:33,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-10-01 01:03:33,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-01 01:03:33,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-01 01:03:33,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:33,550 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 22 states. [2018-10-01 01:03:33,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:33,668 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2018-10-01 01:03:33,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-01 01:03:33,669 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 82 [2018-10-01 01:03:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:33,670 INFO L225 Difference]: With dead ends: 89 [2018-10-01 01:03:33,670 INFO L226 Difference]: Without dead ends: 87 [2018-10-01 01:03:33,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-10-01 01:03:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-10-01 01:03:33,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-01 01:03:33,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-10-01 01:03:33,674 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 82 [2018-10-01 01:03:33,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:33,675 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-10-01 01:03:33,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-01 01:03:33,675 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-10-01 01:03:33,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-01 01:03:33,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:33,676 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:33,676 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:33,677 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:33,677 INFO L82 PathProgramCache]: Analyzing trace with hash 947991508, now seen corresponding path program 20 times [2018-10-01 01:03:33,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:33,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:33,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:33,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:33,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:33,911 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:33,911 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:33,920 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:33,964 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:33,965 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:33,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:34,241 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:34,242 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-10-01 01:03:34,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-01 01:03:34,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-01 01:03:34,242 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:34,242 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 23 states. [2018-10-01 01:03:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:34,328 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-10-01 01:03:34,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-01 01:03:34,332 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2018-10-01 01:03:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:34,332 INFO L225 Difference]: With dead ends: 93 [2018-10-01 01:03:34,333 INFO L226 Difference]: Without dead ends: 91 [2018-10-01 01:03:34,333 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:34,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-10-01 01:03:34,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-10-01 01:03:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-10-01 01:03:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-10-01 01:03:34,335 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 86 [2018-10-01 01:03:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:34,335 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-10-01 01:03:34,335 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-01 01:03:34,335 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-10-01 01:03:34,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-01 01:03:34,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:34,336 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:34,337 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:34,337 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:34,337 INFO L82 PathProgramCache]: Analyzing trace with hash -861112450, now seen corresponding path program 21 times [2018-10-01 01:03:34,337 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:34,337 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:34,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:34,338 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:34,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:34,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:34,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:34,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:34,873 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-10-01 01:03:34,874 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:34,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:35,064 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:35,065 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-10-01 01:03:35,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-01 01:03:35,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-01 01:03:35,065 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:35,066 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 24 states. [2018-10-01 01:03:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:35,222 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-10-01 01:03:35,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-01 01:03:35,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 90 [2018-10-01 01:03:35,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:35,223 INFO L225 Difference]: With dead ends: 97 [2018-10-01 01:03:35,223 INFO L226 Difference]: Without dead ends: 95 [2018-10-01 01:03:35,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-10-01 01:03:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-10-01 01:03:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-10-01 01:03:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2018-10-01 01:03:35,227 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 90 [2018-10-01 01:03:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:35,227 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2018-10-01 01:03:35,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-01 01:03:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2018-10-01 01:03:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-01 01:03:35,228 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:35,228 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:35,228 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:35,229 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash 215602728, now seen corresponding path program 22 times [2018-10-01 01:03:35,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:35,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:35,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:35,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:35,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:36,377 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:36,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:36,385 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:36,404 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:36,405 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:36,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:36,613 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:36,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-10-01 01:03:36,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-01 01:03:36,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-01 01:03:36,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:36,614 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 25 states. [2018-10-01 01:03:36,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:36,732 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-10-01 01:03:36,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-01 01:03:36,732 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 94 [2018-10-01 01:03:36,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:36,734 INFO L225 Difference]: With dead ends: 101 [2018-10-01 01:03:36,734 INFO L226 Difference]: Without dead ends: 99 [2018-10-01 01:03:36,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:03:36,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-10-01 01:03:36,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-10-01 01:03:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-10-01 01:03:36,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-10-01 01:03:36,738 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 94 [2018-10-01 01:03:36,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:36,738 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-10-01 01:03:36,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-01 01:03:36,738 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-10-01 01:03:36,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-01 01:03:36,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:36,739 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:36,739 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:36,739 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:36,739 INFO L82 PathProgramCache]: Analyzing trace with hash -1534865454, now seen corresponding path program 23 times [2018-10-01 01:03:36,739 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:36,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:36,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:36,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:36,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:36,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:36,932 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:36,940 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:36,971 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-10-01 01:03:36,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:36,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:37,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:37,470 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:37,470 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-10-01 01:03:37,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-10-01 01:03:37,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-10-01 01:03:37,470 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:37,471 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 26 states. [2018-10-01 01:03:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:37,664 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-10-01 01:03:37,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-01 01:03:37,666 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 98 [2018-10-01 01:03:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:37,666 INFO L225 Difference]: With dead ends: 105 [2018-10-01 01:03:37,667 INFO L226 Difference]: Without dead ends: 103 [2018-10-01 01:03:37,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-01 01:03:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-01 01:03:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-01 01:03:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-10-01 01:03:37,669 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 98 [2018-10-01 01:03:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:37,670 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-10-01 01:03:37,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-10-01 01:03:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-10-01 01:03:37,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-01 01:03:37,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:37,671 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:37,671 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:37,671 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:37,671 INFO L82 PathProgramCache]: Analyzing trace with hash -35330948, now seen corresponding path program 24 times [2018-10-01 01:03:37,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:37,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:37,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:37,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:37,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:38,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:38,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:38,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:38,504 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:38,533 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-10-01 01:03:38,533 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:38,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:38,797 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:38,797 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-10-01 01:03:38,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-01 01:03:38,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-01 01:03:38,798 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:38,798 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 27 states. [2018-10-01 01:03:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:38,895 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-10-01 01:03:38,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-01 01:03:38,895 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 102 [2018-10-01 01:03:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:38,896 INFO L225 Difference]: With dead ends: 109 [2018-10-01 01:03:38,896 INFO L226 Difference]: Without dead ends: 107 [2018-10-01 01:03:38,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:03:38,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-01 01:03:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2018-10-01 01:03:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-10-01 01:03:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-10-01 01:03:38,900 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 102 [2018-10-01 01:03:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:38,901 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-10-01 01:03:38,901 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-01 01:03:38,901 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-10-01 01:03:38,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-01 01:03:38,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:38,901 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:38,902 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:38,902 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:38,902 INFO L82 PathProgramCache]: Analyzing trace with hash -503868378, now seen corresponding path program 25 times [2018-10-01 01:03:38,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:38,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:38,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:38,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:38,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:39,449 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:39,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:39,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:39,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:39,723 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:39,724 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-10-01 01:03:39,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-01 01:03:39,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-01 01:03:39,724 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:39,724 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 28 states. [2018-10-01 01:03:39,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:39,878 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions. [2018-10-01 01:03:39,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-10-01 01:03:39,878 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 106 [2018-10-01 01:03:39,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:39,879 INFO L225 Difference]: With dead ends: 113 [2018-10-01 01:03:39,879 INFO L226 Difference]: Without dead ends: 111 [2018-10-01 01:03:39,880 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:03:39,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-01 01:03:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-01 01:03:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-01 01:03:39,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-10-01 01:03:39,883 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 106 [2018-10-01 01:03:39,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:39,883 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-10-01 01:03:39,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-01 01:03:39,884 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-10-01 01:03:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-01 01:03:39,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:39,884 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:39,884 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:39,885 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:39,885 INFO L82 PathProgramCache]: Analyzing trace with hash 410410704, now seen corresponding path program 26 times [2018-10-01 01:03:39,885 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:39,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:39,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:39,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:39,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:40,253 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:40,253 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:40,261 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:40,287 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:40,287 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:40,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:40,522 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:40,522 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-10-01 01:03:40,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-01 01:03:40,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-01 01:03:40,523 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:40,523 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 29 states. [2018-10-01 01:03:40,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:40,784 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-10-01 01:03:40,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-10-01 01:03:40,784 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 110 [2018-10-01 01:03:40,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:40,785 INFO L225 Difference]: With dead ends: 117 [2018-10-01 01:03:40,785 INFO L226 Difference]: Without dead ends: 115 [2018-10-01 01:03:40,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:40,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-10-01 01:03:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2018-10-01 01:03:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-10-01 01:03:40,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-10-01 01:03:40,788 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 110 [2018-10-01 01:03:40,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:40,788 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-10-01 01:03:40,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-01 01:03:40,789 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-10-01 01:03:40,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-01 01:03:40,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:40,789 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:40,789 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:40,790 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:40,790 INFO L82 PathProgramCache]: Analyzing trace with hash 131843194, now seen corresponding path program 27 times [2018-10-01 01:03:40,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:40,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:40,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:40,790 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:40,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:40,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:40,981 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:40,990 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:41,021 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-10-01 01:03:41,022 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:41,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:41,238 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:41,239 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-10-01 01:03:41,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-10-01 01:03:41,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-10-01 01:03:41,239 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:41,239 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 30 states. [2018-10-01 01:03:41,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:41,400 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-10-01 01:03:41,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-01 01:03:41,400 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 114 [2018-10-01 01:03:41,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:41,402 INFO L225 Difference]: With dead ends: 121 [2018-10-01 01:03:41,402 INFO L226 Difference]: Without dead ends: 119 [2018-10-01 01:03:41,403 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-10-01 01:03:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2018-10-01 01:03:41,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2018-10-01 01:03:41,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-01 01:03:41,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2018-10-01 01:03:41,406 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 114 [2018-10-01 01:03:41,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:41,407 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2018-10-01 01:03:41,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-10-01 01:03:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2018-10-01 01:03:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-01 01:03:41,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:41,408 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:41,408 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:41,408 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:41,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1432503588, now seen corresponding path program 28 times [2018-10-01 01:03:41,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:41,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:41,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:41,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:41,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:41,735 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:41,735 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:41,744 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:41,769 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:41,769 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:41,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:42,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:42,030 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-10-01 01:03:42,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-01 01:03:42,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-01 01:03:42,030 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:42,030 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 31 states. [2018-10-01 01:03:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:42,206 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions. [2018-10-01 01:03:42,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-01 01:03:42,206 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 118 [2018-10-01 01:03:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:42,209 INFO L225 Difference]: With dead ends: 125 [2018-10-01 01:03:42,209 INFO L226 Difference]: Without dead ends: 123 [2018-10-01 01:03:42,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:42,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-10-01 01:03:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-10-01 01:03:42,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-01 01:03:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-10-01 01:03:42,212 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 118 [2018-10-01 01:03:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:42,213 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-10-01 01:03:42,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-01 01:03:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-10-01 01:03:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-01 01:03:42,214 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:42,214 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:42,214 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:42,214 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2063310642, now seen corresponding path program 29 times [2018-10-01 01:03:42,215 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:42,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:42,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:42,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:42,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:42,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:42,553 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:42,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:42,561 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:42,644 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-10-01 01:03:42,644 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:42,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:42,894 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:42,894 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-10-01 01:03:42,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-10-01 01:03:42,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-10-01 01:03:42,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:42,894 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 32 states. [2018-10-01 01:03:43,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:43,065 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-10-01 01:03:43,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-01 01:03:43,065 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 122 [2018-10-01 01:03:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:43,066 INFO L225 Difference]: With dead ends: 129 [2018-10-01 01:03:43,066 INFO L226 Difference]: Without dead ends: 127 [2018-10-01 01:03:43,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-01 01:03:43,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2018-10-01 01:03:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-10-01 01:03:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-10-01 01:03:43,069 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 122 [2018-10-01 01:03:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:43,070 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-10-01 01:03:43,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-10-01 01:03:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-10-01 01:03:43,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-01 01:03:43,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:43,071 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:43,071 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:43,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1719888008, now seen corresponding path program 30 times [2018-10-01 01:03:43,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:43,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:43,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:43,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:43,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:43,369 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:43,376 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:43,415 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-10-01 01:03:43,415 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:43,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:43,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:43,627 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-10-01 01:03:43,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-01 01:03:43,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-01 01:03:43,628 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:43,628 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 33 states. [2018-10-01 01:03:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:43,799 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-10-01 01:03:43,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-01 01:03:43,799 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 126 [2018-10-01 01:03:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:43,801 INFO L225 Difference]: With dead ends: 133 [2018-10-01 01:03:43,801 INFO L226 Difference]: Without dead ends: 131 [2018-10-01 01:03:43,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-10-01 01:03:43,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2018-10-01 01:03:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-10-01 01:03:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2018-10-01 01:03:43,805 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 126 [2018-10-01 01:03:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:43,805 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2018-10-01 01:03:43,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-01 01:03:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2018-10-01 01:03:43,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-01 01:03:43,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:43,806 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:43,807 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:43,807 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:43,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1270519518, now seen corresponding path program 31 times [2018-10-01 01:03:43,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:43,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:43,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,808 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:43,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:44,448 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:44,448 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:44,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:44,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:44,746 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:44,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-10-01 01:03:44,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-01 01:03:44,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-01 01:03:44,747 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:44,747 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 34 states. [2018-10-01 01:03:44,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:44,904 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions. [2018-10-01 01:03:44,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-01 01:03:44,905 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 130 [2018-10-01 01:03:44,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:44,906 INFO L225 Difference]: With dead ends: 137 [2018-10-01 01:03:44,906 INFO L226 Difference]: Without dead ends: 135 [2018-10-01 01:03:44,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-10-01 01:03:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-10-01 01:03:44,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-10-01 01:03:44,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-10-01 01:03:44,911 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 130 [2018-10-01 01:03:44,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:44,911 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-10-01 01:03:44,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-01 01:03:44,911 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-10-01 01:03:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-01 01:03:44,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:44,912 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:44,912 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:44,912 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1248242228, now seen corresponding path program 32 times [2018-10-01 01:03:44,913 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:44,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:44,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:44,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:44,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:45,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:45,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:45,218 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:45,225 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:45,252 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:45,252 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:45,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:45,629 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:45,630 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-10-01 01:03:45,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-10-01 01:03:45,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-10-01 01:03:45,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:45,631 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 35 states. [2018-10-01 01:03:45,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:45,827 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-10-01 01:03:45,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-01 01:03:45,827 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 134 [2018-10-01 01:03:45,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:45,829 INFO L225 Difference]: With dead ends: 141 [2018-10-01 01:03:45,829 INFO L226 Difference]: Without dead ends: 139 [2018-10-01 01:03:45,829 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:45,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2018-10-01 01:03:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2018-10-01 01:03:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-01 01:03:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-10-01 01:03:45,832 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 134 [2018-10-01 01:03:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:45,833 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-10-01 01:03:45,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-10-01 01:03:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-10-01 01:03:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-01 01:03:45,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:45,833 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:45,834 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:45,834 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:45,834 INFO L82 PathProgramCache]: Analyzing trace with hash -596451978, now seen corresponding path program 33 times [2018-10-01 01:03:45,834 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:45,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:45,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:45,835 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:45,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:46,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:46,161 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:46,161 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:46,168 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:46,208 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-10-01 01:03:46,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:46,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:46,481 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:46,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-10-01 01:03:46,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-10-01 01:03:46,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-10-01 01:03:46,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:46,482 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 36 states. [2018-10-01 01:03:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:46,643 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-10-01 01:03:46,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-10-01 01:03:46,644 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 138 [2018-10-01 01:03:46,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:46,645 INFO L225 Difference]: With dead ends: 145 [2018-10-01 01:03:46,645 INFO L226 Difference]: Without dead ends: 143 [2018-10-01 01:03:46,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-01 01:03:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-10-01 01:03:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-10-01 01:03:46,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2018-10-01 01:03:46,648 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 138 [2018-10-01 01:03:46,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:46,649 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2018-10-01 01:03:46,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-10-01 01:03:46,649 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2018-10-01 01:03:46,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-01 01:03:46,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:46,650 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:46,650 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:46,650 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1720483872, now seen corresponding path program 34 times [2018-10-01 01:03:46,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:46,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:46,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:46,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:46,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:46,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:46,957 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:46,957 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:46,965 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:46,996 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:46,997 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:46,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:47,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:47,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:47,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-10-01 01:03:47,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-10-01 01:03:47,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-10-01 01:03:47,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:47,262 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 37 states. [2018-10-01 01:03:47,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:47,522 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2018-10-01 01:03:47,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-10-01 01:03:47,522 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 142 [2018-10-01 01:03:47,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:47,523 INFO L225 Difference]: With dead ends: 149 [2018-10-01 01:03:47,523 INFO L226 Difference]: Without dead ends: 147 [2018-10-01 01:03:47,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-10-01 01:03:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-10-01 01:03:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-10-01 01:03:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-01 01:03:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-10-01 01:03:47,527 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 142 [2018-10-01 01:03:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:47,527 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-10-01 01:03:47,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-10-01 01:03:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-10-01 01:03:47,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-01 01:03:47,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:47,528 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:47,529 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:47,529 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash 811646410, now seen corresponding path program 35 times [2018-10-01 01:03:47,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:47,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:47,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:47,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:47,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:48,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:48,110 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:48,110 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:48,119 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:48,217 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-10-01 01:03:48,217 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:48,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:48,532 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:48,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-10-01 01:03:48,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-10-01 01:03:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-10-01 01:03:48,533 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:48,533 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 38 states. [2018-10-01 01:03:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:48,806 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-10-01 01:03:48,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-01 01:03:48,806 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 146 [2018-10-01 01:03:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:48,808 INFO L225 Difference]: With dead ends: 153 [2018-10-01 01:03:48,808 INFO L226 Difference]: Without dead ends: 151 [2018-10-01 01:03:48,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:03:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-10-01 01:03:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2018-10-01 01:03:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-10-01 01:03:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-10-01 01:03:48,812 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 146 [2018-10-01 01:03:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:48,812 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-10-01 01:03:48,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-10-01 01:03:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-10-01 01:03:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-01 01:03:48,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:48,813 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:48,814 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:48,814 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:48,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1428821620, now seen corresponding path program 36 times [2018-10-01 01:03:48,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:48,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:48,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:48,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:48,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:49,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:49,143 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:49,143 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:49,150 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:49,205 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-10-01 01:03:49,206 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:49,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:49,911 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:49,912 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-10-01 01:03:49,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-10-01 01:03:49,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-10-01 01:03:49,912 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:49,912 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 39 states. [2018-10-01 01:03:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:50,052 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-10-01 01:03:50,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-01 01:03:50,052 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 150 [2018-10-01 01:03:50,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:50,054 INFO L225 Difference]: With dead ends: 157 [2018-10-01 01:03:50,054 INFO L226 Difference]: Without dead ends: 155 [2018-10-01 01:03:50,054 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:03:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-10-01 01:03:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-10-01 01:03:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-10-01 01:03:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2018-10-01 01:03:50,058 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 150 [2018-10-01 01:03:50,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:50,058 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2018-10-01 01:03:50,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-10-01 01:03:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2018-10-01 01:03:50,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-01 01:03:50,059 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:50,060 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:50,060 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:50,060 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:50,060 INFO L82 PathProgramCache]: Analyzing trace with hash -823981538, now seen corresponding path program 37 times [2018-10-01 01:03:50,060 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:50,060 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:50,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:50,061 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:50,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:50,475 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:50,475 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:50,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:50,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:50,798 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:50,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-10-01 01:03:50,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-10-01 01:03:50,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-10-01 01:03:50,799 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:50,799 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand 40 states. [2018-10-01 01:03:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:50,993 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2018-10-01 01:03:51,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-01 01:03:51,003 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 154 [2018-10-01 01:03:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:51,004 INFO L225 Difference]: With dead ends: 161 [2018-10-01 01:03:51,004 INFO L226 Difference]: Without dead ends: 159 [2018-10-01 01:03:51,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-10-01 01:03:51,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-10-01 01:03:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-10-01 01:03:51,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-10-01 01:03:51,007 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 154 [2018-10-01 01:03:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:51,007 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-10-01 01:03:51,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-10-01 01:03:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-10-01 01:03:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-01 01:03:51,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:51,008 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:51,009 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:51,009 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:51,009 INFO L82 PathProgramCache]: Analyzing trace with hash 373692616, now seen corresponding path program 38 times [2018-10-01 01:03:51,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:51,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:51,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:51,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:03:51,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:52,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:52,314 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:52,314 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:52,321 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:03:52,352 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:03:52,352 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:52,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:53,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:53,499 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-10-01 01:03:53,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-01 01:03:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-01 01:03:53,500 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:53,500 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 41 states. [2018-10-01 01:03:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:53,834 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-10-01 01:03:53,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-01 01:03:53,834 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 158 [2018-10-01 01:03:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:53,836 INFO L225 Difference]: With dead ends: 165 [2018-10-01 01:03:53,836 INFO L226 Difference]: Without dead ends: 163 [2018-10-01 01:03:53,836 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:03:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-01 01:03:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-10-01 01:03:53,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-10-01 01:03:53,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-10-01 01:03:53,840 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 158 [2018-10-01 01:03:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:53,840 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-10-01 01:03:53,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-01 01:03:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-10-01 01:03:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-01 01:03:53,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:53,841 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:53,842 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:53,842 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:53,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1026702734, now seen corresponding path program 39 times [2018-10-01 01:03:53,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:53,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:53,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:53,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:53,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:55,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:55,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:55,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:55,355 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:03:55,401 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-10-01 01:03:55,401 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:55,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3003 backedges. 0 proven. 3003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:55,691 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:55,691 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-10-01 01:03:55,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-10-01 01:03:55,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-10-01 01:03:55,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:55,692 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 42 states. [2018-10-01 01:03:56,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:56,003 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-10-01 01:03:56,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-01 01:03:56,003 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 162 [2018-10-01 01:03:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:56,005 INFO L225 Difference]: With dead ends: 169 [2018-10-01 01:03:56,005 INFO L226 Difference]: Without dead ends: 167 [2018-10-01 01:03:56,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:03:56,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2018-10-01 01:03:56,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2018-10-01 01:03:56,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2018-10-01 01:03:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2018-10-01 01:03:56,009 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 162 [2018-10-01 01:03:56,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:56,010 INFO L480 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2018-10-01 01:03:56,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-10-01 01:03:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2018-10-01 01:03:56,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-01 01:03:56,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:56,011 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:56,011 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:56,011 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:56,011 INFO L82 PathProgramCache]: Analyzing trace with hash 716474140, now seen corresponding path program 40 times [2018-10-01 01:03:56,011 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:56,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:56,012 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:56,352 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:56,352 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:56,359 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:03:56,396 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:03:56,396 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:56,399 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3160 backedges. 0 proven. 3160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:56,737 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:56,738 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-10-01 01:03:56,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-10-01 01:03:56,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-10-01 01:03:56,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:56,739 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 43 states. [2018-10-01 01:03:56,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:56,922 INFO L93 Difference]: Finished difference Result 173 states and 173 transitions. [2018-10-01 01:03:56,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-10-01 01:03:56,922 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 166 [2018-10-01 01:03:56,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:56,924 INFO L225 Difference]: With dead ends: 173 [2018-10-01 01:03:56,924 INFO L226 Difference]: Without dead ends: 171 [2018-10-01 01:03:56,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:03:56,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-10-01 01:03:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-10-01 01:03:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-10-01 01:03:56,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-10-01 01:03:56,927 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 166 [2018-10-01 01:03:56,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:56,928 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-10-01 01:03:56,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-10-01 01:03:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-10-01 01:03:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-01 01:03:56,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:56,929 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:56,929 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:56,930 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:56,930 INFO L82 PathProgramCache]: Analyzing trace with hash 49604294, now seen corresponding path program 41 times [2018-10-01 01:03:56,930 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:56,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:56,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:56,931 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:56,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:57,449 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:57,449 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:57,457 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:03:57,518 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-10-01 01:03:57,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:57,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3321 backedges. 0 proven. 3321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:57,950 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:57,951 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-10-01 01:03:57,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-01 01:03:57,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-01 01:03:57,952 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:57,952 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 44 states. [2018-10-01 01:03:58,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:03:58,295 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-10-01 01:03:58,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-10-01 01:03:58,296 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 170 [2018-10-01 01:03:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:03:58,297 INFO L225 Difference]: With dead ends: 177 [2018-10-01 01:03:58,297 INFO L226 Difference]: Without dead ends: 175 [2018-10-01 01:03:58,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:03:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2018-10-01 01:03:58,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2018-10-01 01:03:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-10-01 01:03:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-10-01 01:03:58,302 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 170 [2018-10-01 01:03:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:03:58,303 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-10-01 01:03:58,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-01 01:03:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-10-01 01:03:58,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-01 01:03:58,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:03:58,304 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2018-10-01 01:03:58,304 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:03:58,305 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:03:58,305 INFO L82 PathProgramCache]: Analyzing trace with hash -11968144, now seen corresponding path program 42 times [2018-10-01 01:03:58,305 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:03:58,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:03:58,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:58,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:03:58,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:03:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:03:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:59,332 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:03:59,332 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:03:59,339 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:03:59,390 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-10-01 01:03:59,391 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:03:59,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:03:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3486 backedges. 0 proven. 3486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:03:59,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:03:59,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-10-01 01:03:59,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-01 01:03:59,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-01 01:03:59,716 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:03:59,717 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 45 states. [2018-10-01 01:04:00,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:00,048 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-10-01 01:04:00,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-10-01 01:04:00,049 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 174 [2018-10-01 01:04:00,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:00,050 INFO L225 Difference]: With dead ends: 181 [2018-10-01 01:04:00,050 INFO L226 Difference]: Without dead ends: 179 [2018-10-01 01:04:00,051 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:04:00,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-10-01 01:04:00,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-10-01 01:04:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-10-01 01:04:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2018-10-01 01:04:00,055 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 174 [2018-10-01 01:04:00,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:00,055 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2018-10-01 01:04:00,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-01 01:04:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2018-10-01 01:04:00,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-01 01:04:00,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:00,056 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:00,057 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:00,057 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1915516698, now seen corresponding path program 43 times [2018-10-01 01:04:00,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:00,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:00,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:00,058 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:00,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:01,377 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:01,377 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:01,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:01,421 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:01,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3655 backedges. 0 proven. 3655 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:01,709 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:01,709 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-10-01 01:04:01,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-10-01 01:04:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-10-01 01:04:01,710 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:01,710 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand 46 states. [2018-10-01 01:04:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:01,915 INFO L93 Difference]: Finished difference Result 185 states and 185 transitions. [2018-10-01 01:04:01,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-01 01:04:01,916 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 178 [2018-10-01 01:04:01,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:01,917 INFO L225 Difference]: With dead ends: 185 [2018-10-01 01:04:01,917 INFO L226 Difference]: Without dead ends: 183 [2018-10-01 01:04:01,917 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:04:01,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-10-01 01:04:01,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-10-01 01:04:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-10-01 01:04:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-10-01 01:04:01,921 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 178 [2018-10-01 01:04:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:01,921 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-10-01 01:04:01,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-10-01 01:04:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-10-01 01:04:01,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-10-01 01:04:01,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:01,922 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:01,922 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:01,922 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:01,923 INFO L82 PathProgramCache]: Analyzing trace with hash -321345596, now seen corresponding path program 44 times [2018-10-01 01:04:01,923 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:01,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:01,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:01,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:01,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:02,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:02,238 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:02,246 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:02,280 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:02,281 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:02,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:02,613 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:02,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-10-01 01:04:02,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-10-01 01:04:02,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-10-01 01:04:02,614 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:02,615 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 47 states. [2018-10-01 01:04:02,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:02,930 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-10-01 01:04:02,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-01 01:04:02,931 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 182 [2018-10-01 01:04:02,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:02,932 INFO L225 Difference]: With dead ends: 189 [2018-10-01 01:04:02,932 INFO L226 Difference]: Without dead ends: 187 [2018-10-01 01:04:02,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-10-01 01:04:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-01 01:04:02,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2018-10-01 01:04:02,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-10-01 01:04:02,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-10-01 01:04:02,935 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 182 [2018-10-01 01:04:02,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:02,935 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-10-01 01:04:02,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-10-01 01:04:02,935 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-10-01 01:04:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-01 01:04:02,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:02,936 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:02,936 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:02,937 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:02,937 INFO L82 PathProgramCache]: Analyzing trace with hash -548899986, now seen corresponding path program 45 times [2018-10-01 01:04:02,937 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:02,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:02,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:02,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:02,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:03,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:03,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:03,489 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:03,549 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-10-01 01:04:03,549 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:03,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4005 backedges. 0 proven. 4005 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:04,480 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:04,481 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-10-01 01:04:04,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-10-01 01:04:04,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-10-01 01:04:04,482 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:04,482 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 48 states. [2018-10-01 01:04:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:06,364 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-10-01 01:04:06,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-10-01 01:04:06,365 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 186 [2018-10-01 01:04:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:06,366 INFO L225 Difference]: With dead ends: 193 [2018-10-01 01:04:06,366 INFO L226 Difference]: Without dead ends: 191 [2018-10-01 01:04:06,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:04:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-10-01 01:04:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-10-01 01:04:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-10-01 01:04:06,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 191 transitions. [2018-10-01 01:04:06,369 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 191 transitions. Word has length 186 [2018-10-01 01:04:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:06,370 INFO L480 AbstractCegarLoop]: Abstraction has 191 states and 191 transitions. [2018-10-01 01:04:06,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-10-01 01:04:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 191 transitions. [2018-10-01 01:04:06,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-01 01:04:06,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:06,371 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:06,371 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:06,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:06,372 INFO L82 PathProgramCache]: Analyzing trace with hash 943086104, now seen corresponding path program 46 times [2018-10-01 01:04:06,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:06,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:06,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:06,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:06,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:06,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:06,972 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:06,979 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:07,018 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:07,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:07,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:07,493 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:07,493 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-10-01 01:04:07,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-01 01:04:07,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-01 01:04:07,494 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:07,494 INFO L87 Difference]: Start difference. First operand 191 states and 191 transitions. Second operand 49 states. [2018-10-01 01:04:07,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:07,695 INFO L93 Difference]: Finished difference Result 197 states and 197 transitions. [2018-10-01 01:04:07,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-10-01 01:04:07,695 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 190 [2018-10-01 01:04:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:07,697 INFO L225 Difference]: With dead ends: 197 [2018-10-01 01:04:07,697 INFO L226 Difference]: Without dead ends: 195 [2018-10-01 01:04:07,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-10-01 01:04:07,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-10-01 01:04:07,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-01 01:04:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-10-01 01:04:07,701 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 190 [2018-10-01 01:04:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:07,701 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-10-01 01:04:07,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-01 01:04:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-10-01 01:04:07,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-01 01:04:07,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:07,702 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:07,702 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:07,703 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:07,703 INFO L82 PathProgramCache]: Analyzing trace with hash 85777346, now seen corresponding path program 47 times [2018-10-01 01:04:07,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:07,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:07,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:07,704 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:07,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:09,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:09,367 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:09,374 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:09,945 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-10-01 01:04:09,946 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:09,949 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 0 proven. 4371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:10,456 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:10,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-10-01 01:04:10,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-01 01:04:10,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-01 01:04:10,457 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:10,457 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 50 states. [2018-10-01 01:04:10,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:10,744 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2018-10-01 01:04:10,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-01 01:04:10,745 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 194 [2018-10-01 01:04:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:10,746 INFO L225 Difference]: With dead ends: 201 [2018-10-01 01:04:10,746 INFO L226 Difference]: Without dead ends: 199 [2018-10-01 01:04:10,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:04:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2018-10-01 01:04:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2018-10-01 01:04:10,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-10-01 01:04:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2018-10-01 01:04:10,750 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 194 [2018-10-01 01:04:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:10,751 INFO L480 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2018-10-01 01:04:10,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-01 01:04:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2018-10-01 01:04:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-01 01:04:10,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:10,752 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:10,752 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:10,753 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash 305559660, now seen corresponding path program 48 times [2018-10-01 01:04:10,753 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:10,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:10,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:10,754 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:10,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:11,787 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:11,787 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:11,794 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:11,855 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-10-01 01:04:11,855 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:11,858 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:12,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4560 backedges. 0 proven. 4560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:12,193 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:12,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-10-01 01:04:12,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-10-01 01:04:12,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-10-01 01:04:12,194 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:12,194 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand 51 states. [2018-10-01 01:04:12,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:12,487 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-10-01 01:04:12,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-01 01:04:12,487 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 198 [2018-10-01 01:04:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:12,489 INFO L225 Difference]: With dead ends: 205 [2018-10-01 01:04:12,489 INFO L226 Difference]: Without dead ends: 203 [2018-10-01 01:04:12,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:04:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-10-01 01:04:12,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2018-10-01 01:04:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2018-10-01 01:04:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2018-10-01 01:04:12,491 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 198 [2018-10-01 01:04:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:12,492 INFO L480 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2018-10-01 01:04:12,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-10-01 01:04:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2018-10-01 01:04:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-01 01:04:12,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:12,493 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:12,493 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:12,493 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:12,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1971474410, now seen corresponding path program 49 times [2018-10-01 01:04:12,493 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:12,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:12,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:12,494 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:12,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:12,983 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:12,983 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:12,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:13,030 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4753 backedges. 0 proven. 4753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:14,489 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:14,489 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-10-01 01:04:14,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-10-01 01:04:14,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-10-01 01:04:14,490 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:14,490 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 52 states. [2018-10-01 01:04:14,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:14,812 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2018-10-01 01:04:14,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-01 01:04:14,812 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 202 [2018-10-01 01:04:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:14,814 INFO L225 Difference]: With dead ends: 209 [2018-10-01 01:04:14,814 INFO L226 Difference]: Without dead ends: 207 [2018-10-01 01:04:14,815 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:04:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-10-01 01:04:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-10-01 01:04:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-01 01:04:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-10-01 01:04:14,818 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 202 [2018-10-01 01:04:14,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:14,818 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-10-01 01:04:14,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-10-01 01:04:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-10-01 01:04:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-01 01:04:14,819 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:14,819 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:14,820 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:14,820 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:14,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1750269248, now seen corresponding path program 50 times [2018-10-01 01:04:14,820 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:14,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:14,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:14,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:14,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:15,163 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:15,164 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:15,171 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:15,218 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:15,219 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:15,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4950 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:15,959 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:15,960 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-10-01 01:04:15,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-10-01 01:04:15,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-10-01 01:04:15,961 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:15,961 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 53 states. [2018-10-01 01:04:16,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:16,220 INFO L93 Difference]: Finished difference Result 213 states and 213 transitions. [2018-10-01 01:04:16,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-10-01 01:04:16,221 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 206 [2018-10-01 01:04:16,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:16,222 INFO L225 Difference]: With dead ends: 213 [2018-10-01 01:04:16,222 INFO L226 Difference]: Without dead ends: 211 [2018-10-01 01:04:16,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-10-01 01:04:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2018-10-01 01:04:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2018-10-01 01:04:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2018-10-01 01:04:16,226 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 206 [2018-10-01 01:04:16,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:16,226 INFO L480 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2018-10-01 01:04:16,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-10-01 01:04:16,226 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2018-10-01 01:04:16,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-01 01:04:16,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:16,227 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:16,228 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:16,228 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:16,228 INFO L82 PathProgramCache]: Analyzing trace with hash 37679210, now seen corresponding path program 51 times [2018-10-01 01:04:16,228 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:16,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:16,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:16,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:16,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:16,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:16,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:16,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:16,614 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:16,693 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-10-01 01:04:16,694 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:16,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 5151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:17,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:17,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-10-01 01:04:17,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-10-01 01:04:17,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-10-01 01:04:17,309 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:17,309 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand 54 states. [2018-10-01 01:04:17,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:17,625 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-10-01 01:04:17,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-10-01 01:04:17,625 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 210 [2018-10-01 01:04:17,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:17,627 INFO L225 Difference]: With dead ends: 217 [2018-10-01 01:04:17,627 INFO L226 Difference]: Without dead ends: 215 [2018-10-01 01:04:17,627 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:17,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-01 01:04:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-01 01:04:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-01 01:04:17,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2018-10-01 01:04:17,630 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 210 [2018-10-01 01:04:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:17,631 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2018-10-01 01:04:17,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-10-01 01:04:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2018-10-01 01:04:17,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-01 01:04:17,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:17,632 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:17,632 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:17,633 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash -781321964, now seen corresponding path program 52 times [2018-10-01 01:04:17,633 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:17,633 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:17,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:17,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:17,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:18,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:18,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:18,003 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:18,012 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:18,056 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:18,056 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:18,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5356 backedges. 0 proven. 5356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:18,685 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:18,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-10-01 01:04:18,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-10-01 01:04:18,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-10-01 01:04:18,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:18,686 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand 55 states. [2018-10-01 01:04:19,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:19,063 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2018-10-01 01:04:19,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-01 01:04:19,064 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 214 [2018-10-01 01:04:19,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:19,065 INFO L225 Difference]: With dead ends: 221 [2018-10-01 01:04:19,065 INFO L226 Difference]: Without dead ends: 219 [2018-10-01 01:04:19,065 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-10-01 01:04:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-10-01 01:04:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-01 01:04:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-10-01 01:04:19,067 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 214 [2018-10-01 01:04:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:19,068 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-10-01 01:04:19,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-10-01 01:04:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-10-01 01:04:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-01 01:04:19,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:19,069 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:19,069 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:19,069 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash -348873538, now seen corresponding path program 53 times [2018-10-01 01:04:19,069 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:19,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:19,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:19,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:19,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:19,528 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:19,528 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:19,535 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:19,602 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-10-01 01:04:19,603 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:19,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5565 backedges. 0 proven. 5565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:19,994 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:19,994 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-10-01 01:04:19,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-10-01 01:04:19,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-10-01 01:04:19,995 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:19,995 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 56 states. [2018-10-01 01:04:20,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:20,360 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2018-10-01 01:04:20,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-01 01:04:20,360 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 218 [2018-10-01 01:04:20,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:20,362 INFO L225 Difference]: With dead ends: 225 [2018-10-01 01:04:20,362 INFO L226 Difference]: Without dead ends: 223 [2018-10-01 01:04:20,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:20,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-10-01 01:04:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2018-10-01 01:04:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-01 01:04:20,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 223 transitions. [2018-10-01 01:04:20,366 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 223 transitions. Word has length 218 [2018-10-01 01:04:20,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:20,366 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 223 transitions. [2018-10-01 01:04:20,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-10-01 01:04:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 223 transitions. [2018-10-01 01:04:20,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-01 01:04:20,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:20,367 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:20,367 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:20,367 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:20,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1269998744, now seen corresponding path program 54 times [2018-10-01 01:04:20,367 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:20,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:20,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:20,368 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:20,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:20,771 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:20,771 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:20,777 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:20,862 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-10-01 01:04:20,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:20,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:21,306 INFO L134 CoverageAnalysis]: Checked inductivity of 5778 backedges. 0 proven. 5778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:21,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:21,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-10-01 01:04:21,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-01 01:04:21,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-01 01:04:21,328 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:21,328 INFO L87 Difference]: Start difference. First operand 223 states and 223 transitions. Second operand 57 states. [2018-10-01 01:04:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:21,669 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-10-01 01:04:21,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-10-01 01:04:21,669 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 222 [2018-10-01 01:04:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:21,671 INFO L225 Difference]: With dead ends: 229 [2018-10-01 01:04:21,671 INFO L226 Difference]: Without dead ends: 227 [2018-10-01 01:04:21,671 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:21,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-10-01 01:04:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2018-10-01 01:04:21,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2018-10-01 01:04:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2018-10-01 01:04:21,675 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 222 [2018-10-01 01:04:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:21,676 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2018-10-01 01:04:21,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-01 01:04:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2018-10-01 01:04:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-01 01:04:21,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:21,677 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:21,677 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:21,678 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:21,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1338854126, now seen corresponding path program 55 times [2018-10-01 01:04:21,678 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:21,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:21,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:21,679 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:21,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:22,048 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:22,048 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:22,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:22,100 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5995 backedges. 0 proven. 5995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:22,476 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:22,476 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-10-01 01:04:22,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-10-01 01:04:22,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-10-01 01:04:22,477 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:22,477 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand 58 states. [2018-10-01 01:04:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:22,874 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2018-10-01 01:04:22,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-10-01 01:04:22,875 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 226 [2018-10-01 01:04:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:22,876 INFO L225 Difference]: With dead ends: 233 [2018-10-01 01:04:22,876 INFO L226 Difference]: Without dead ends: 231 [2018-10-01 01:04:22,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-10-01 01:04:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-10-01 01:04:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-10-01 01:04:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-10-01 01:04:22,880 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 226 [2018-10-01 01:04:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:22,880 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-10-01 01:04:22,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-10-01 01:04:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-10-01 01:04:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-10-01 01:04:22,881 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:22,882 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:22,882 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:22,882 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:22,882 INFO L82 PathProgramCache]: Analyzing trace with hash 555690428, now seen corresponding path program 56 times [2018-10-01 01:04:22,882 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:22,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:22,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:22,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:22,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:23,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:23,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:23,232 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:23,286 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:23,286 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:23,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6216 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:23,963 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:23,963 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-10-01 01:04:23,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-10-01 01:04:23,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-10-01 01:04:23,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:23,964 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 59 states. [2018-10-01 01:04:24,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:24,384 INFO L93 Difference]: Finished difference Result 237 states and 237 transitions. [2018-10-01 01:04:24,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-10-01 01:04:24,385 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 230 [2018-10-01 01:04:24,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:24,386 INFO L225 Difference]: With dead ends: 237 [2018-10-01 01:04:24,386 INFO L226 Difference]: Without dead ends: 235 [2018-10-01 01:04:24,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-10-01 01:04:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2018-10-01 01:04:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-10-01 01:04:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 235 transitions. [2018-10-01 01:04:24,390 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 235 transitions. Word has length 230 [2018-10-01 01:04:24,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:24,390 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 235 transitions. [2018-10-01 01:04:24,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-10-01 01:04:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 235 transitions. [2018-10-01 01:04:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-01 01:04:24,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:24,391 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:24,392 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:24,392 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:24,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1475528346, now seen corresponding path program 57 times [2018-10-01 01:04:24,392 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:24,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:24,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:24,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:24,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:24,835 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:24,835 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:24,843 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:24,920 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-10-01 01:04:24,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:24,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6441 backedges. 0 proven. 6441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:25,306 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:25,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-10-01 01:04:25,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-10-01 01:04:25,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-10-01 01:04:25,307 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:25,307 INFO L87 Difference]: Start difference. First operand 235 states and 235 transitions. Second operand 60 states. [2018-10-01 01:04:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:25,622 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2018-10-01 01:04:25,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-10-01 01:04:25,623 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 234 [2018-10-01 01:04:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:25,624 INFO L225 Difference]: With dead ends: 241 [2018-10-01 01:04:25,624 INFO L226 Difference]: Without dead ends: 239 [2018-10-01 01:04:25,624 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:25,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-10-01 01:04:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2018-10-01 01:04:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-01 01:04:25,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-01 01:04:25,627 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 234 [2018-10-01 01:04:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:25,627 INFO L480 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-01 01:04:25,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-10-01 01:04:25,627 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-01 01:04:25,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-01 01:04:25,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:25,628 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:25,628 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:25,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:25,628 INFO L82 PathProgramCache]: Analyzing trace with hash -457743344, now seen corresponding path program 58 times [2018-10-01 01:04:25,629 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:25,629 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:25,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:25,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:25,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:25,980 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:25,980 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:25,989 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:26,035 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:26,035 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:26,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 6670 backedges. 0 proven. 6670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:26,479 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:26,480 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-10-01 01:04:26,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-10-01 01:04:26,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-10-01 01:04:26,481 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:26,481 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 61 states. [2018-10-01 01:04:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:26,796 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2018-10-01 01:04:26,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-10-01 01:04:26,796 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 238 [2018-10-01 01:04:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:26,798 INFO L225 Difference]: With dead ends: 245 [2018-10-01 01:04:26,798 INFO L226 Difference]: Without dead ends: 243 [2018-10-01 01:04:26,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-10-01 01:04:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-10-01 01:04:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-10-01 01:04:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2018-10-01 01:04:26,801 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 238 [2018-10-01 01:04:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:26,801 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2018-10-01 01:04:26,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-10-01 01:04:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2018-10-01 01:04:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-01 01:04:26,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:26,803 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:26,803 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:26,803 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:26,803 INFO L82 PathProgramCache]: Analyzing trace with hash 362293690, now seen corresponding path program 59 times [2018-10-01 01:04:26,803 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:26,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:26,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:26,804 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:26,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:27,312 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:27,312 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:27,320 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:27,398 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-10-01 01:04:27,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:27,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6903 backedges. 0 proven. 6903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:27,836 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:27,836 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-10-01 01:04:27,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-01 01:04:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-01 01:04:27,837 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:27,837 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand 62 states. [2018-10-01 01:04:28,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:28,239 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2018-10-01 01:04:28,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-10-01 01:04:28,239 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 242 [2018-10-01 01:04:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:28,241 INFO L225 Difference]: With dead ends: 249 [2018-10-01 01:04:28,241 INFO L226 Difference]: Without dead ends: 247 [2018-10-01 01:04:28,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:28,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-10-01 01:04:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2018-10-01 01:04:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2018-10-01 01:04:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2018-10-01 01:04:28,245 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 242 [2018-10-01 01:04:28,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:28,245 INFO L480 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2018-10-01 01:04:28,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-01 01:04:28,245 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2018-10-01 01:04:28,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-01 01:04:28,246 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:28,247 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:28,247 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:28,247 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:28,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1209398684, now seen corresponding path program 60 times [2018-10-01 01:04:28,247 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:28,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:28,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:28,248 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:28,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:28,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:28,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:28,819 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:28,827 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:28,907 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-10-01 01:04:28,907 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:28,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:29,342 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:29,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-10-01 01:04:29,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-10-01 01:04:29,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-10-01 01:04:29,343 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:29,344 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand 63 states. [2018-10-01 01:04:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:29,761 INFO L93 Difference]: Finished difference Result 253 states and 253 transitions. [2018-10-01 01:04:29,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-10-01 01:04:29,762 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 246 [2018-10-01 01:04:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:29,763 INFO L225 Difference]: With dead ends: 253 [2018-10-01 01:04:29,763 INFO L226 Difference]: Without dead ends: 251 [2018-10-01 01:04:29,763 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:29,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2018-10-01 01:04:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2018-10-01 01:04:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-01 01:04:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 251 transitions. [2018-10-01 01:04:29,766 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 251 transitions. Word has length 246 [2018-10-01 01:04:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:29,766 INFO L480 AbstractCegarLoop]: Abstraction has 251 states and 251 transitions. [2018-10-01 01:04:29,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-10-01 01:04:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 251 transitions. [2018-10-01 01:04:29,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-01 01:04:29,767 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:29,767 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:29,767 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:29,767 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash 665290254, now seen corresponding path program 61 times [2018-10-01 01:04:29,768 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:29,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:29,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:29,768 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:29,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:30,222 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:30,222 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:30,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:30,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7381 backedges. 0 proven. 7381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:30,718 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:30,718 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-10-01 01:04:30,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-01 01:04:30,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-01 01:04:30,719 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:30,719 INFO L87 Difference]: Start difference. First operand 251 states and 251 transitions. Second operand 64 states. [2018-10-01 01:04:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:31,113 INFO L93 Difference]: Finished difference Result 257 states and 257 transitions. [2018-10-01 01:04:31,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-10-01 01:04:31,113 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 250 [2018-10-01 01:04:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:31,114 INFO L225 Difference]: With dead ends: 257 [2018-10-01 01:04:31,114 INFO L226 Difference]: Without dead ends: 255 [2018-10-01 01:04:31,114 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-01 01:04:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2018-10-01 01:04:31,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2018-10-01 01:04:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 255 transitions. [2018-10-01 01:04:31,117 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 255 transitions. Word has length 250 [2018-10-01 01:04:31,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:31,117 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 255 transitions. [2018-10-01 01:04:31,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-01 01:04:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 255 transitions. [2018-10-01 01:04:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2018-10-01 01:04:31,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:31,118 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:31,118 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:31,118 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1066081464, now seen corresponding path program 62 times [2018-10-01 01:04:31,119 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:31,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:31,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:31,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:31,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:31,537 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:31,537 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:31,545 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:31,593 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:31,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:31,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7626 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:32,070 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:32,070 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-10-01 01:04:32,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-01 01:04:32,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-01 01:04:32,071 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:32,071 INFO L87 Difference]: Start difference. First operand 255 states and 255 transitions. Second operand 65 states. [2018-10-01 01:04:32,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:32,379 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2018-10-01 01:04:32,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-01 01:04:32,380 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 254 [2018-10-01 01:04:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:32,382 INFO L225 Difference]: With dead ends: 261 [2018-10-01 01:04:32,382 INFO L226 Difference]: Without dead ends: 259 [2018-10-01 01:04:32,382 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:32,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-10-01 01:04:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2018-10-01 01:04:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2018-10-01 01:04:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2018-10-01 01:04:32,386 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 254 [2018-10-01 01:04:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:32,386 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2018-10-01 01:04:32,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-01 01:04:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2018-10-01 01:04:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-01 01:04:32,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:32,387 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:32,388 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:32,388 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:32,388 INFO L82 PathProgramCache]: Analyzing trace with hash -116437406, now seen corresponding path program 63 times [2018-10-01 01:04:32,388 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:32,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:32,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:32,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:32,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:32,840 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:32,840 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:32,849 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:32,940 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-10-01 01:04:32,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:32,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:33,381 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:33,381 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-10-01 01:04:33,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-10-01 01:04:33,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-10-01 01:04:33,382 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:33,382 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand 66 states. [2018-10-01 01:04:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:33,822 INFO L93 Difference]: Finished difference Result 265 states and 265 transitions. [2018-10-01 01:04:33,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-01 01:04:33,823 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 258 [2018-10-01 01:04:33,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:33,824 INFO L225 Difference]: With dead ends: 265 [2018-10-01 01:04:33,824 INFO L226 Difference]: Without dead ends: 263 [2018-10-01 01:04:33,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-10-01 01:04:33,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2018-10-01 01:04:33,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2018-10-01 01:04:33,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 263 transitions. [2018-10-01 01:04:33,828 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 263 transitions. Word has length 258 [2018-10-01 01:04:33,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:33,828 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 263 transitions. [2018-10-01 01:04:33,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-10-01 01:04:33,828 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 263 transitions. [2018-10-01 01:04:33,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-10-01 01:04:33,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:33,830 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:33,830 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:33,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:33,830 INFO L82 PathProgramCache]: Analyzing trace with hash 208575244, now seen corresponding path program 64 times [2018-10-01 01:04:33,830 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:33,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:33,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:33,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:33,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:34,254 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:34,254 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:34,262 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:34,313 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:34,313 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:34,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:34,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:34,785 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-10-01 01:04:34,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-01 01:04:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-01 01:04:34,785 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:34,786 INFO L87 Difference]: Start difference. First operand 263 states and 263 transitions. Second operand 67 states. [2018-10-01 01:04:35,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:35,128 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2018-10-01 01:04:35,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-10-01 01:04:35,129 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 262 [2018-10-01 01:04:35,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:35,130 INFO L225 Difference]: With dead ends: 269 [2018-10-01 01:04:35,131 INFO L226 Difference]: Without dead ends: 267 [2018-10-01 01:04:35,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:35,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-10-01 01:04:35,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2018-10-01 01:04:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2018-10-01 01:04:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2018-10-01 01:04:35,134 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 262 [2018-10-01 01:04:35,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:35,135 INFO L480 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2018-10-01 01:04:35,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-01 01:04:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2018-10-01 01:04:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-01 01:04:35,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:35,136 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:35,137 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:35,137 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1868332362, now seen corresponding path program 65 times [2018-10-01 01:04:35,137 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:35,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:35,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:35,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:35,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:35,553 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:35,553 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:35,561 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:35,650 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-10-01 01:04:35,651 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:35,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 8385 backedges. 0 proven. 8385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:36,112 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:36,113 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-10-01 01:04:36,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-10-01 01:04:36,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-10-01 01:04:36,114 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:36,114 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand 68 states. [2018-10-01 01:04:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:36,646 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2018-10-01 01:04:36,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-10-01 01:04:36,646 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 266 [2018-10-01 01:04:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:36,647 INFO L225 Difference]: With dead ends: 273 [2018-10-01 01:04:36,647 INFO L226 Difference]: Without dead ends: 271 [2018-10-01 01:04:36,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-10-01 01:04:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-01 01:04:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2018-10-01 01:04:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2018-10-01 01:04:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2018-10-01 01:04:36,650 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 266 [2018-10-01 01:04:36,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:36,651 INFO L480 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2018-10-01 01:04:36,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-10-01 01:04:36,651 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2018-10-01 01:04:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-01 01:04:36,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:36,652 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:36,653 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:36,653 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:36,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1687648928, now seen corresponding path program 66 times [2018-10-01 01:04:36,653 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:36,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:36,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:36,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:36,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:37,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:37,120 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:37,127 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:37,215 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-10-01 01:04:37,215 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:37,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8646 backedges. 0 proven. 8646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:37,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:37,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-10-01 01:04:37,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-10-01 01:04:37,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-10-01 01:04:37,717 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:37,717 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand 69 states. [2018-10-01 01:04:38,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:38,063 INFO L93 Difference]: Finished difference Result 277 states and 277 transitions. [2018-10-01 01:04:38,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-10-01 01:04:38,064 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 270 [2018-10-01 01:04:38,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:38,065 INFO L225 Difference]: With dead ends: 277 [2018-10-01 01:04:38,066 INFO L226 Difference]: Without dead ends: 275 [2018-10-01 01:04:38,066 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:38,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2018-10-01 01:04:38,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2018-10-01 01:04:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2018-10-01 01:04:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2018-10-01 01:04:38,069 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 270 [2018-10-01 01:04:38,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:38,069 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2018-10-01 01:04:38,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-10-01 01:04:38,070 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2018-10-01 01:04:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-01 01:04:38,070 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:38,071 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:38,071 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:38,071 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash -516414710, now seen corresponding path program 67 times [2018-10-01 01:04:38,071 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:38,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:38,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:38,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:38,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:38,484 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:38,484 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:38,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:38,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:39,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8911 backedges. 0 proven. 8911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:39,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:39,214 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-10-01 01:04:39,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-10-01 01:04:39,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-10-01 01:04:39,215 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:39,215 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 70 states. [2018-10-01 01:04:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:39,601 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2018-10-01 01:04:39,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-10-01 01:04:39,602 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 274 [2018-10-01 01:04:39,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:39,603 INFO L225 Difference]: With dead ends: 281 [2018-10-01 01:04:39,603 INFO L226 Difference]: Without dead ends: 279 [2018-10-01 01:04:39,603 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-10-01 01:04:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2018-10-01 01:04:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-01 01:04:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2018-10-01 01:04:39,606 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 274 [2018-10-01 01:04:39,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:39,607 INFO L480 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2018-10-01 01:04:39,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-10-01 01:04:39,607 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2018-10-01 01:04:39,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-01 01:04:39,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:39,609 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 68, 68, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:39,609 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:39,609 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:39,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1431100340, now seen corresponding path program 68 times [2018-10-01 01:04:39,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:39,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:39,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:39,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:39,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:40,051 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:40,051 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:40,059 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:40,113 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:40,113 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:40,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:40,618 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:40,618 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-10-01 01:04:40,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-01 01:04:40,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-01 01:04:40,619 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:40,619 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand 71 states. [2018-10-01 01:04:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:41,029 INFO L93 Difference]: Finished difference Result 285 states and 285 transitions. [2018-10-01 01:04:41,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-10-01 01:04:41,029 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-01 01:04:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:41,031 INFO L225 Difference]: With dead ends: 285 [2018-10-01 01:04:41,031 INFO L226 Difference]: Without dead ends: 283 [2018-10-01 01:04:41,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:41,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-01 01:04:41,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2018-10-01 01:04:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2018-10-01 01:04:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 283 transitions. [2018-10-01 01:04:41,034 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 283 transitions. Word has length 278 [2018-10-01 01:04:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:41,035 INFO L480 AbstractCegarLoop]: Abstraction has 283 states and 283 transitions. [2018-10-01 01:04:41,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-01 01:04:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 283 transitions. [2018-10-01 01:04:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-01 01:04:41,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:41,036 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 69, 69, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:41,036 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:41,036 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:41,036 INFO L82 PathProgramCache]: Analyzing trace with hash -912183458, now seen corresponding path program 69 times [2018-10-01 01:04:41,036 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:41,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:41,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:41,037 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:41,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:41,487 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:41,487 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:41,487 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:41,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:41,592 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-10-01 01:04:41,592 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:41,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 9453 backedges. 0 proven. 9453 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:42,332 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:42,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-10-01 01:04:42,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-10-01 01:04:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-10-01 01:04:42,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:42,334 INFO L87 Difference]: Start difference. First operand 283 states and 283 transitions. Second operand 72 states. [2018-10-01 01:04:42,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:42,705 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2018-10-01 01:04:42,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-10-01 01:04:42,705 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 282 [2018-10-01 01:04:42,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:42,706 INFO L225 Difference]: With dead ends: 289 [2018-10-01 01:04:42,706 INFO L226 Difference]: Without dead ends: 287 [2018-10-01 01:04:42,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:42,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2018-10-01 01:04:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2018-10-01 01:04:42,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-10-01 01:04:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2018-10-01 01:04:42,712 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 282 [2018-10-01 01:04:42,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:42,712 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2018-10-01 01:04:42,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-10-01 01:04:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2018-10-01 01:04:42,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-01 01:04:42,714 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:42,714 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 70, 70, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:42,714 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:42,714 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:42,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1896899064, now seen corresponding path program 70 times [2018-10-01 01:04:42,714 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:42,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:42,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:42,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:42,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:43,149 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:43,149 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:43,156 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:43,209 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:43,209 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:43,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9730 backedges. 0 proven. 9730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:43,685 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:43,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-10-01 01:04:43,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-01 01:04:43,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-01 01:04:43,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:43,686 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand 73 states. [2018-10-01 01:04:44,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:44,304 INFO L93 Difference]: Finished difference Result 293 states and 293 transitions. [2018-10-01 01:04:44,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-10-01 01:04:44,304 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 286 [2018-10-01 01:04:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:44,306 INFO L225 Difference]: With dead ends: 293 [2018-10-01 01:04:44,306 INFO L226 Difference]: Without dead ends: 291 [2018-10-01 01:04:44,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2018-10-01 01:04:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2018-10-01 01:04:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2018-10-01 01:04:44,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 291 transitions. [2018-10-01 01:04:44,308 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 291 transitions. Word has length 286 [2018-10-01 01:04:44,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:44,309 INFO L480 AbstractCegarLoop]: Abstraction has 291 states and 291 transitions. [2018-10-01 01:04:44,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-01 01:04:44,309 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 291 transitions. [2018-10-01 01:04:44,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-01 01:04:44,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:44,311 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 71, 71, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:44,311 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:44,311 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:44,311 INFO L82 PathProgramCache]: Analyzing trace with hash 347252658, now seen corresponding path program 71 times [2018-10-01 01:04:44,311 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:44,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:44,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:44,312 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:44,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:44,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:44,939 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:44,939 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:44,946 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:45,053 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-10-01 01:04:45,053 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:45,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10011 backedges. 0 proven. 10011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:45,575 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:45,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-10-01 01:04:45,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-10-01 01:04:45,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-10-01 01:04:45,577 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:45,577 INFO L87 Difference]: Start difference. First operand 291 states and 291 transitions. Second operand 74 states. [2018-10-01 01:04:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:45,928 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2018-10-01 01:04:45,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-01 01:04:45,929 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 290 [2018-10-01 01:04:45,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:45,930 INFO L225 Difference]: With dead ends: 297 [2018-10-01 01:04:45,931 INFO L226 Difference]: Without dead ends: 295 [2018-10-01 01:04:45,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:04:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2018-10-01 01:04:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2018-10-01 01:04:45,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2018-10-01 01:04:45,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2018-10-01 01:04:45,935 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 290 [2018-10-01 01:04:45,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:45,935 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2018-10-01 01:04:45,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-10-01 01:04:45,935 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2018-10-01 01:04:45,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2018-10-01 01:04:45,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:45,937 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 72, 72, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:45,937 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:45,937 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:45,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1994077092, now seen corresponding path program 72 times [2018-10-01 01:04:45,937 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:45,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:45,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:45,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:45,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:46,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:46,400 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:46,407 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:46,517 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-10-01 01:04:46,517 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:46,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10296 backedges. 0 proven. 10296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:47,008 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:47,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-10-01 01:04:47,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-10-01 01:04:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-10-01 01:04:47,010 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:47,010 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand 75 states. [2018-10-01 01:04:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:47,492 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2018-10-01 01:04:47,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-10-01 01:04:47,493 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 294 [2018-10-01 01:04:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:47,494 INFO L225 Difference]: With dead ends: 301 [2018-10-01 01:04:47,494 INFO L226 Difference]: Without dead ends: 299 [2018-10-01 01:04:47,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-01 01:04:47,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2018-10-01 01:04:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-10-01 01:04:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2018-10-01 01:04:47,497 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 294 [2018-10-01 01:04:47,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:47,497 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2018-10-01 01:04:47,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-10-01 01:04:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2018-10-01 01:04:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-01 01:04:47,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:47,499 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 73, 73, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:47,499 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:47,499 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:47,499 INFO L82 PathProgramCache]: Analyzing trace with hash 2034273286, now seen corresponding path program 73 times [2018-10-01 01:04:47,499 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:47,499 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:47,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:47,500 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:47,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:47,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:47,962 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:47,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:48,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:48,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10585 backedges. 0 proven. 10585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:48,566 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:48,567 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-10-01 01:04:48,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-10-01 01:04:48,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-10-01 01:04:48,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:48,568 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand 76 states. [2018-10-01 01:04:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:49,040 INFO L93 Difference]: Finished difference Result 305 states and 305 transitions. [2018-10-01 01:04:49,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-10-01 01:04:49,041 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 298 [2018-10-01 01:04:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:49,042 INFO L225 Difference]: With dead ends: 305 [2018-10-01 01:04:49,042 INFO L226 Difference]: Without dead ends: 303 [2018-10-01 01:04:49,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:49,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2018-10-01 01:04:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2018-10-01 01:04:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-01 01:04:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 303 transitions. [2018-10-01 01:04:49,045 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 303 transitions. Word has length 298 [2018-10-01 01:04:49,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:49,046 INFO L480 AbstractCegarLoop]: Abstraction has 303 states and 303 transitions. [2018-10-01 01:04:49,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-10-01 01:04:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 303 transitions. [2018-10-01 01:04:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-01 01:04:49,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:49,047 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 74, 74, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:49,047 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:49,047 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:49,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1891657392, now seen corresponding path program 74 times [2018-10-01 01:04:49,047 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:49,047 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:49,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:49,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:49,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:49,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:49,609 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:49,616 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:49,673 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:49,673 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:49,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10878 backedges. 0 proven. 10878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:50,195 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:50,195 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-10-01 01:04:50,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-10-01 01:04:50,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-10-01 01:04:50,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:50,196 INFO L87 Difference]: Start difference. First operand 303 states and 303 transitions. Second operand 77 states. [2018-10-01 01:04:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:50,602 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2018-10-01 01:04:50,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-10-01 01:04:50,603 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 302 [2018-10-01 01:04:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:50,605 INFO L225 Difference]: With dead ends: 309 [2018-10-01 01:04:50,605 INFO L226 Difference]: Without dead ends: 307 [2018-10-01 01:04:50,605 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:50,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-01 01:04:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2018-10-01 01:04:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2018-10-01 01:04:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2018-10-01 01:04:50,608 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 302 [2018-10-01 01:04:50,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:50,608 INFO L480 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2018-10-01 01:04:50,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-10-01 01:04:50,608 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2018-10-01 01:04:50,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-10-01 01:04:50,610 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:50,610 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 75, 75, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:50,610 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:50,610 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:50,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1709253542, now seen corresponding path program 75 times [2018-10-01 01:04:50,610 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:50,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:50,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:50,611 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:50,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:51,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:51,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:51,082 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:04:51,193 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-10-01 01:04:51,194 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:51,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11175 backedges. 0 proven. 11175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:51,723 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:51,723 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-10-01 01:04:51,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-01 01:04:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-01 01:04:51,724 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:51,724 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand 78 states. [2018-10-01 01:04:52,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:52,325 INFO L93 Difference]: Finished difference Result 313 states and 313 transitions. [2018-10-01 01:04:52,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-10-01 01:04:52,325 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 306 [2018-10-01 01:04:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:52,327 INFO L225 Difference]: With dead ends: 313 [2018-10-01 01:04:52,327 INFO L226 Difference]: Without dead ends: 311 [2018-10-01 01:04:52,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2018-10-01 01:04:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2018-10-01 01:04:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2018-10-01 01:04:52,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2018-10-01 01:04:52,331 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 306 [2018-10-01 01:04:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:52,331 INFO L480 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2018-10-01 01:04:52,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-01 01:04:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2018-10-01 01:04:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-01 01:04:52,332 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:52,333 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 76, 76, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:52,333 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:52,333 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:52,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1586916612, now seen corresponding path program 76 times [2018-10-01 01:04:52,333 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:52,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:52,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:52,334 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:52,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:52,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:52,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:52,803 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:04:52,864 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:04:52,864 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:52,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:53,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11476 backedges. 0 proven. 11476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:53,392 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:53,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-10-01 01:04:53,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-01 01:04:53,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-01 01:04:53,393 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:53,393 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 79 states. [2018-10-01 01:04:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:53,805 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2018-10-01 01:04:53,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2018-10-01 01:04:53,806 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 310 [2018-10-01 01:04:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:53,807 INFO L225 Difference]: With dead ends: 317 [2018-10-01 01:04:53,807 INFO L226 Difference]: Without dead ends: 315 [2018-10-01 01:04:53,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-10-01 01:04:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2018-10-01 01:04:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2018-10-01 01:04:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2018-10-01 01:04:53,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 315 transitions. [2018-10-01 01:04:53,810 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 315 transitions. Word has length 310 [2018-10-01 01:04:53,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:53,810 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 315 transitions. [2018-10-01 01:04:53,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-01 01:04:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 315 transitions. [2018-10-01 01:04:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2018-10-01 01:04:53,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:53,812 INFO L375 BasicCegarLoop]: trace histogram [77, 77, 77, 77, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:53,812 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:53,812 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash 102865070, now seen corresponding path program 77 times [2018-10-01 01:04:53,812 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:53,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:53,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:53,813 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:53,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:54,501 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:54,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:54,507 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:04:54,630 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2018-10-01 01:04:54,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:54,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11781 backedges. 0 proven. 11781 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:55,191 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:55,192 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-10-01 01:04:55,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states [2018-10-01 01:04:55,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2018-10-01 01:04:55,193 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:55,193 INFO L87 Difference]: Start difference. First operand 315 states and 315 transitions. Second operand 80 states. [2018-10-01 01:04:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:55,658 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2018-10-01 01:04:55,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-01 01:04:55,659 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 314 [2018-10-01 01:04:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:55,660 INFO L225 Difference]: With dead ends: 321 [2018-10-01 01:04:55,660 INFO L226 Difference]: Without dead ends: 319 [2018-10-01 01:04:55,661 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:04:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-10-01 01:04:55,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-10-01 01:04:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-10-01 01:04:55,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2018-10-01 01:04:55,664 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 314 [2018-10-01 01:04:55,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:55,664 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2018-10-01 01:04:55,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states. [2018-10-01 01:04:55,664 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2018-10-01 01:04:55,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-01 01:04:55,665 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:55,666 INFO L375 BasicCegarLoop]: trace histogram [78, 78, 78, 78, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:55,666 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:55,666 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:55,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670360, now seen corresponding path program 78 times [2018-10-01 01:04:55,666 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:55,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:55,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:55,667 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:55,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:56,152 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:56,152 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:56,160 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:04:56,273 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2018-10-01 01:04:56,273 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:56,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 12090 backedges. 0 proven. 12090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:56,822 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:56,822 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 80 [2018-10-01 01:04:56,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2018-10-01 01:04:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2018-10-01 01:04:56,823 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:56,823 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand 81 states. [2018-10-01 01:04:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:57,331 INFO L93 Difference]: Finished difference Result 325 states and 325 transitions. [2018-10-01 01:04:57,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2018-10-01 01:04:57,332 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 318 [2018-10-01 01:04:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:57,333 INFO L225 Difference]: With dead ends: 325 [2018-10-01 01:04:57,334 INFO L226 Difference]: Without dead ends: 323 [2018-10-01 01:04:57,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:57,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-01 01:04:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2018-10-01 01:04:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-01 01:04:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2018-10-01 01:04:57,336 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 318 [2018-10-01 01:04:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:57,336 INFO L480 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2018-10-01 01:04:57,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 81 states. [2018-10-01 01:04:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2018-10-01 01:04:57,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-01 01:04:57,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:57,338 INFO L375 BasicCegarLoop]: trace histogram [79, 79, 79, 79, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:57,338 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:57,338 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:57,338 INFO L82 PathProgramCache]: Analyzing trace with hash 941408514, now seen corresponding path program 79 times [2018-10-01 01:04:57,338 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:57,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:57,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:57,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:04:57,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:57,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:57,878 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:57,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:57,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:04:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 12403 backedges. 0 proven. 12403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:58,533 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:04:58,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 81 [2018-10-01 01:04:58,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states [2018-10-01 01:04:58,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2018-10-01 01:04:58,534 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:04:58,534 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand 82 states. [2018-10-01 01:04:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:04:59,002 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2018-10-01 01:04:59,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-01 01:04:59,002 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 322 [2018-10-01 01:04:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:04:59,004 INFO L225 Difference]: With dead ends: 329 [2018-10-01 01:04:59,004 INFO L226 Difference]: Without dead ends: 327 [2018-10-01 01:04:59,005 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:04:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-01 01:04:59,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2018-10-01 01:04:59,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-01 01:04:59,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2018-10-01 01:04:59,008 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 322 [2018-10-01 01:04:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:04:59,008 INFO L480 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2018-10-01 01:04:59,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states. [2018-10-01 01:04:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2018-10-01 01:04:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-01 01:04:59,009 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:04:59,010 INFO L375 BasicCegarLoop]: trace histogram [80, 80, 80, 80, 1, 1, 1, 1, 1, 1] [2018-10-01 01:04:59,010 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:04:59,010 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:04:59,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1279376812, now seen corresponding path program 80 times [2018-10-01 01:04:59,010 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:04:59,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:04:59,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:59,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:04:59,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:04:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:04:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:04:59,750 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:04:59,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:04:59,757 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:04:59,819 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:04:59,819 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:04:59,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12720 backedges. 0 proven. 12720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:00,379 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:00,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 82 [2018-10-01 01:05:00,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-01 01:05:00,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-01 01:05:00,381 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:00,381 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand 83 states. [2018-10-01 01:05:01,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:01,124 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-01 01:05:01,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-01 01:05:01,124 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 326 [2018-10-01 01:05:01,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:01,126 INFO L225 Difference]: With dead ends: 333 [2018-10-01 01:05:01,126 INFO L226 Difference]: Without dead ends: 331 [2018-10-01 01:05:01,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:01,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2018-10-01 01:05:01,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2018-10-01 01:05:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2018-10-01 01:05:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 331 transitions. [2018-10-01 01:05:01,129 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 331 transitions. Word has length 326 [2018-10-01 01:05:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:01,129 INFO L480 AbstractCegarLoop]: Abstraction has 331 states and 331 transitions. [2018-10-01 01:05:01,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-01 01:05:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 331 transitions. [2018-10-01 01:05:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2018-10-01 01:05:01,130 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:01,130 INFO L375 BasicCegarLoop]: trace histogram [81, 81, 81, 81, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:01,130 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:01,131 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:01,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1763420842, now seen corresponding path program 81 times [2018-10-01 01:05:01,131 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:01,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:01,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:01,131 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:01,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:01,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:01,649 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:01,656 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:01,779 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2018-10-01 01:05:01,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:01,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13041 backedges. 0 proven. 13041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:02,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:02,330 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 83 [2018-10-01 01:05:02,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states [2018-10-01 01:05:02,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2018-10-01 01:05:02,331 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:02,331 INFO L87 Difference]: Start difference. First operand 331 states and 331 transitions. Second operand 84 states. [2018-10-01 01:05:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:04,022 INFO L93 Difference]: Finished difference Result 337 states and 337 transitions. [2018-10-01 01:05:04,022 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2018-10-01 01:05:04,023 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 330 [2018-10-01 01:05:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:04,024 INFO L225 Difference]: With dead ends: 337 [2018-10-01 01:05:04,024 INFO L226 Difference]: Without dead ends: 335 [2018-10-01 01:05:04,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:05:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-10-01 01:05:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2018-10-01 01:05:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-01 01:05:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 335 transitions. [2018-10-01 01:05:04,027 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 335 transitions. Word has length 330 [2018-10-01 01:05:04,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:04,028 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 335 transitions. [2018-10-01 01:05:04,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states. [2018-10-01 01:05:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 335 transitions. [2018-10-01 01:05:04,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-10-01 01:05:04,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:04,029 INFO L375 BasicCegarLoop]: trace histogram [82, 82, 82, 82, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:04,029 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:04,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:04,029 INFO L82 PathProgramCache]: Analyzing trace with hash 431949824, now seen corresponding path program 82 times [2018-10-01 01:05:04,030 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:04,030 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:04,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:04,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:04,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:04,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:04,860 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:04,869 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:04,934 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:04,934 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:04,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 13366 backedges. 0 proven. 13366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:05,601 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:05,601 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 84 [2018-10-01 01:05:05,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2018-10-01 01:05:05,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2018-10-01 01:05:05,602 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:05,602 INFO L87 Difference]: Start difference. First operand 335 states and 335 transitions. Second operand 85 states. [2018-10-01 01:05:06,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:06,124 INFO L93 Difference]: Finished difference Result 341 states and 341 transitions. [2018-10-01 01:05:06,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-10-01 01:05:06,125 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 334 [2018-10-01 01:05:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:06,127 INFO L225 Difference]: With dead ends: 341 [2018-10-01 01:05:06,127 INFO L226 Difference]: Without dead ends: 339 [2018-10-01 01:05:06,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:05:06,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-01 01:05:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2018-10-01 01:05:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2018-10-01 01:05:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 339 transitions. [2018-10-01 01:05:06,130 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 339 transitions. Word has length 334 [2018-10-01 01:05:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:06,130 INFO L480 AbstractCegarLoop]: Abstraction has 339 states and 339 transitions. [2018-10-01 01:05:06,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 85 states. [2018-10-01 01:05:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 339 transitions. [2018-10-01 01:05:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-10-01 01:05:06,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:06,131 INFO L375 BasicCegarLoop]: trace histogram [83, 83, 83, 83, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:06,132 INFO L423 AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:06,132 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:06,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1967936938, now seen corresponding path program 83 times [2018-10-01 01:05:06,132 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:06,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:06,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:06,133 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:06,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:06,679 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:06,679 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:06,686 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:06,816 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2018-10-01 01:05:06,816 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:06,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13695 backedges. 0 proven. 13695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:07,386 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:07,386 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 85 [2018-10-01 01:05:07,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states [2018-10-01 01:05:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2018-10-01 01:05:07,388 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:07,388 INFO L87 Difference]: Start difference. First operand 339 states and 339 transitions. Second operand 86 states. [2018-10-01 01:05:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:07,879 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2018-10-01 01:05:07,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-01 01:05:07,879 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 338 [2018-10-01 01:05:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:07,881 INFO L225 Difference]: With dead ends: 345 [2018-10-01 01:05:07,881 INFO L226 Difference]: Without dead ends: 343 [2018-10-01 01:05:07,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:05:07,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2018-10-01 01:05:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2018-10-01 01:05:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2018-10-01 01:05:07,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 343 transitions. [2018-10-01 01:05:07,884 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 343 transitions. Word has length 338 [2018-10-01 01:05:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:07,884 INFO L480 AbstractCegarLoop]: Abstraction has 343 states and 343 transitions. [2018-10-01 01:05:07,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states. [2018-10-01 01:05:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 343 transitions. [2018-10-01 01:05:07,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-01 01:05:07,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:07,887 INFO L375 BasicCegarLoop]: trace histogram [84, 84, 84, 84, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:07,887 INFO L423 AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:07,887 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:07,887 INFO L82 PathProgramCache]: Analyzing trace with hash -2000241068, now seen corresponding path program 84 times [2018-10-01 01:05:07,888 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:07,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:07,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:07,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:07,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:08,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:08,786 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:08,786 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:08,794 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:08,925 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2018-10-01 01:05:08,926 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:08,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:09,568 INFO L134 CoverageAnalysis]: Checked inductivity of 14028 backedges. 0 proven. 14028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:09,587 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:09,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 86] total 86 [2018-10-01 01:05:09,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2018-10-01 01:05:09,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2018-10-01 01:05:09,589 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:09,589 INFO L87 Difference]: Start difference. First operand 343 states and 343 transitions. Second operand 87 states. [2018-10-01 01:05:10,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:10,316 INFO L93 Difference]: Finished difference Result 349 states and 349 transitions. [2018-10-01 01:05:10,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-10-01 01:05:10,317 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 342 [2018-10-01 01:05:10,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:10,319 INFO L225 Difference]: With dead ends: 349 [2018-10-01 01:05:10,319 INFO L226 Difference]: Without dead ends: 347 [2018-10-01 01:05:10,319 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:05:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2018-10-01 01:05:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2018-10-01 01:05:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2018-10-01 01:05:10,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2018-10-01 01:05:10,324 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 342 [2018-10-01 01:05:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:10,324 INFO L480 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2018-10-01 01:05:10,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 87 states. [2018-10-01 01:05:10,324 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2018-10-01 01:05:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-01 01:05:10,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:10,326 INFO L375 BasicCegarLoop]: trace histogram [85, 85, 85, 85, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:10,326 INFO L423 AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:10,326 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:10,326 INFO L82 PathProgramCache]: Analyzing trace with hash 304660990, now seen corresponding path program 85 times [2018-10-01 01:05:10,326 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:10,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:10,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:10,327 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:10,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:10,882 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:10,882 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:10,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:10,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14365 backedges. 0 proven. 14365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:11,549 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:11,549 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 87 [2018-10-01 01:05:11,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states [2018-10-01 01:05:11,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2018-10-01 01:05:11,551 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:11,551 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 88 states. [2018-10-01 01:05:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:12,368 INFO L93 Difference]: Finished difference Result 353 states and 353 transitions. [2018-10-01 01:05:12,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2018-10-01 01:05:12,368 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 346 [2018-10-01 01:05:12,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:12,370 INFO L225 Difference]: With dead ends: 353 [2018-10-01 01:05:12,370 INFO L226 Difference]: Without dead ends: 351 [2018-10-01 01:05:12,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time [2018-10-01 01:05:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-10-01 01:05:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-10-01 01:05:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-10-01 01:05:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2018-10-01 01:05:12,373 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 346 [2018-10-01 01:05:12,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:12,373 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2018-10-01 01:05:12,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states. [2018-10-01 01:05:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2018-10-01 01:05:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-10-01 01:05:12,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:12,375 INFO L375 BasicCegarLoop]: trace histogram [86, 86, 86, 86, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:12,375 INFO L423 AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:12,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:12,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1311563944, now seen corresponding path program 86 times [2018-10-01 01:05:12,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:12,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:12,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:12,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:12,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:13,102 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:13,102 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:13,109 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:13,176 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:13,176 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:13,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 14706 backedges. 0 proven. 14706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:13,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:13,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 88] total 88 [2018-10-01 01:05:13,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2018-10-01 01:05:13,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2018-10-01 01:05:13,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:13,781 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand 89 states. [2018-10-01 01:05:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:14,752 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2018-10-01 01:05:14,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-01 01:05:14,752 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 350 [2018-10-01 01:05:14,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:14,753 INFO L225 Difference]: With dead ends: 357 [2018-10-01 01:05:14,753 INFO L226 Difference]: Without dead ends: 355 [2018-10-01 01:05:14,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:14,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-01 01:05:14,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2018-10-01 01:05:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2018-10-01 01:05:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2018-10-01 01:05:14,757 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 350 [2018-10-01 01:05:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:14,757 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2018-10-01 01:05:14,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 89 states. [2018-10-01 01:05:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2018-10-01 01:05:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-10-01 01:05:14,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:14,759 INFO L375 BasicCegarLoop]: trace histogram [87, 87, 87, 87, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:14,759 INFO L423 AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:14,759 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:14,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1739744686, now seen corresponding path program 87 times [2018-10-01 01:05:14,760 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:14,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:14,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:14,760 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:14,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:15,353 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:15,353 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:15,354 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:15,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:15,518 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2018-10-01 01:05:15,518 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:15,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 15051 backedges. 0 proven. 15051 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:16,265 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:16,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 89 [2018-10-01 01:05:16,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states [2018-10-01 01:05:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2018-10-01 01:05:16,266 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:16,266 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand 90 states. [2018-10-01 01:05:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:16,914 INFO L93 Difference]: Finished difference Result 361 states and 361 transitions. [2018-10-01 01:05:16,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2018-10-01 01:05:16,915 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 354 [2018-10-01 01:05:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:16,916 INFO L225 Difference]: With dead ends: 361 [2018-10-01 01:05:16,916 INFO L226 Difference]: Without dead ends: 359 [2018-10-01 01:05:16,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-01 01:05:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2018-10-01 01:05:16,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-01 01:05:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 359 transitions. [2018-10-01 01:05:16,919 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 359 transitions. Word has length 354 [2018-10-01 01:05:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:16,919 INFO L480 AbstractCegarLoop]: Abstraction has 359 states and 359 transitions. [2018-10-01 01:05:16,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states. [2018-10-01 01:05:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 359 transitions. [2018-10-01 01:05:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-10-01 01:05:16,921 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:16,922 INFO L375 BasicCegarLoop]: trace histogram [88, 88, 88, 88, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:16,922 INFO L423 AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:16,922 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:16,922 INFO L82 PathProgramCache]: Analyzing trace with hash 180711164, now seen corresponding path program 88 times [2018-10-01 01:05:16,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:16,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:16,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:16,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:16,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:17,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:17,486 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:17,486 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:17,493 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:17,575 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:17,576 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:17,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 15400 backedges. 0 proven. 15400 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:18,255 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:18,255 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 90] total 90 [2018-10-01 01:05:18,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2018-10-01 01:05:18,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2018-10-01 01:05:18,256 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:18,256 INFO L87 Difference]: Start difference. First operand 359 states and 359 transitions. Second operand 91 states. [2018-10-01 01:05:18,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:18,978 INFO L93 Difference]: Finished difference Result 365 states and 365 transitions. [2018-10-01 01:05:18,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2018-10-01 01:05:18,978 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 358 [2018-10-01 01:05:18,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:18,979 INFO L225 Difference]: With dead ends: 365 [2018-10-01 01:05:18,980 INFO L226 Difference]: Without dead ends: 363 [2018-10-01 01:05:18,980 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:05:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-01 01:05:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2018-10-01 01:05:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-01 01:05:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 363 transitions. [2018-10-01 01:05:18,982 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 363 transitions. Word has length 358 [2018-10-01 01:05:18,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:18,983 INFO L480 AbstractCegarLoop]: Abstraction has 363 states and 363 transitions. [2018-10-01 01:05:18,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 91 states. [2018-10-01 01:05:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 363 transitions. [2018-10-01 01:05:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-10-01 01:05:18,984 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:18,984 INFO L375 BasicCegarLoop]: trace histogram [89, 89, 89, 89, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:18,984 INFO L423 AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:18,985 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:18,985 INFO L82 PathProgramCache]: Analyzing trace with hash 512679590, now seen corresponding path program 89 times [2018-10-01 01:05:18,985 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:18,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:18,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:18,985 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:18,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:19,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:19,557 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:19,557 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:19,566 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:19,734 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2018-10-01 01:05:19,735 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:19,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:20,430 INFO L134 CoverageAnalysis]: Checked inductivity of 15753 backedges. 0 proven. 15753 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:20,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:20,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 91 [2018-10-01 01:05:20,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states [2018-10-01 01:05:20,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2018-10-01 01:05:20,452 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:20,452 INFO L87 Difference]: Start difference. First operand 363 states and 363 transitions. Second operand 92 states. [2018-10-01 01:05:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:21,414 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2018-10-01 01:05:21,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-01 01:05:21,415 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 362 [2018-10-01 01:05:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:21,416 INFO L225 Difference]: With dead ends: 369 [2018-10-01 01:05:21,416 INFO L226 Difference]: Without dead ends: 367 [2018-10-01 01:05:21,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-10-01 01:05:21,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 367. [2018-10-01 01:05:21,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2018-10-01 01:05:21,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 367 transitions. [2018-10-01 01:05:21,419 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 367 transitions. Word has length 362 [2018-10-01 01:05:21,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:21,419 INFO L480 AbstractCegarLoop]: Abstraction has 367 states and 367 transitions. [2018-10-01 01:05:21,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states. [2018-10-01 01:05:21,419 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 367 transitions. [2018-10-01 01:05:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-01 01:05:21,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:21,421 INFO L375 BasicCegarLoop]: trace histogram [90, 90, 90, 90, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:21,421 INFO L423 AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:21,421 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:21,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1264871760, now seen corresponding path program 90 times [2018-10-01 01:05:21,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:21,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:21,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:21,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:21,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:22,067 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:22,067 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:22,075 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:22,253 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2018-10-01 01:05:22,254 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:22,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:22,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16110 backedges. 0 proven. 16110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:22,881 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:22,881 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 92] total 92 [2018-10-01 01:05:22,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2018-10-01 01:05:22,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2018-10-01 01:05:22,883 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:22,883 INFO L87 Difference]: Start difference. First operand 367 states and 367 transitions. Second operand 93 states. [2018-10-01 01:05:23,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:23,534 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2018-10-01 01:05:23,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-01 01:05:23,535 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 366 [2018-10-01 01:05:23,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:23,537 INFO L225 Difference]: With dead ends: 373 [2018-10-01 01:05:23,537 INFO L226 Difference]: Without dead ends: 371 [2018-10-01 01:05:23,537 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:05:23,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2018-10-01 01:05:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 371. [2018-10-01 01:05:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2018-10-01 01:05:23,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 371 transitions. [2018-10-01 01:05:23,540 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 371 transitions. Word has length 366 [2018-10-01 01:05:23,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:23,540 INFO L480 AbstractCegarLoop]: Abstraction has 371 states and 371 transitions. [2018-10-01 01:05:23,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 93 states. [2018-10-01 01:05:23,540 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 371 transitions. [2018-10-01 01:05:23,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-01 01:05:23,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:23,541 INFO L375 BasicCegarLoop]: trace histogram [91, 91, 91, 91, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:23,542 INFO L423 AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:23,542 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:23,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1480552710, now seen corresponding path program 91 times [2018-10-01 01:05:23,542 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:23,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:23,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:23,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:23,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:24,151 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:24,151 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:24,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:24,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:24,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16471 backedges. 0 proven. 16471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:24,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:24,920 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 93 [2018-10-01 01:05:24,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-01 01:05:24,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-01 01:05:24,921 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:24,921 INFO L87 Difference]: Start difference. First operand 371 states and 371 transitions. Second operand 94 states. [2018-10-01 01:05:25,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:25,860 INFO L93 Difference]: Finished difference Result 377 states and 377 transitions. [2018-10-01 01:05:25,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2018-10-01 01:05:25,860 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 370 [2018-10-01 01:05:25,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:25,862 INFO L225 Difference]: With dead ends: 377 [2018-10-01 01:05:25,862 INFO L226 Difference]: Without dead ends: 375 [2018-10-01 01:05:25,863 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:25,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2018-10-01 01:05:25,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2018-10-01 01:05:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2018-10-01 01:05:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 375 transitions. [2018-10-01 01:05:25,866 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 375 transitions. Word has length 370 [2018-10-01 01:05:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:25,866 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 375 transitions. [2018-10-01 01:05:25,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-01 01:05:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 375 transitions. [2018-10-01 01:05:25,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-10-01 01:05:25,868 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:25,868 INFO L375 BasicCegarLoop]: trace histogram [92, 92, 92, 92, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:25,868 INFO L423 AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:25,868 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:25,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1998729308, now seen corresponding path program 92 times [2018-10-01 01:05:25,868 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:25,868 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:25,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:25,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:25,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:26,586 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:26,587 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:26,594 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:26,664 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:26,664 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:26,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:27,273 INFO L134 CoverageAnalysis]: Checked inductivity of 16836 backedges. 0 proven. 16836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:27,292 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:27,292 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94] total 94 [2018-10-01 01:05:27,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-10-01 01:05:27,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-10-01 01:05:27,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:27,294 INFO L87 Difference]: Start difference. First operand 375 states and 375 transitions. Second operand 95 states. [2018-10-01 01:05:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:28,249 INFO L93 Difference]: Finished difference Result 381 states and 381 transitions. [2018-10-01 01:05:28,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2018-10-01 01:05:28,249 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 374 [2018-10-01 01:05:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:28,251 INFO L225 Difference]: With dead ends: 381 [2018-10-01 01:05:28,251 INFO L226 Difference]: Without dead ends: 379 [2018-10-01 01:05:28,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-01 01:05:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-01 01:05:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-01 01:05:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2018-10-01 01:05:28,255 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 374 [2018-10-01 01:05:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:28,256 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2018-10-01 01:05:28,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-10-01 01:05:28,256 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2018-10-01 01:05:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-10-01 01:05:28,257 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:28,257 INFO L375 BasicCegarLoop]: trace histogram [93, 93, 93, 93, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:28,257 INFO L423 AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:28,257 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:28,258 INFO L82 PathProgramCache]: Analyzing trace with hash 582396750, now seen corresponding path program 93 times [2018-10-01 01:05:28,258 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:28,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:28,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:28,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:28,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:28,855 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:28,855 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:28,874 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:29,028 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2018-10-01 01:05:29,028 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:29,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 17205 backedges. 0 proven. 17205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:29,681 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:29,681 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 95 [2018-10-01 01:05:29,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states [2018-10-01 01:05:29,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2018-10-01 01:05:29,683 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:29,683 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand 96 states. [2018-10-01 01:05:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:30,671 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2018-10-01 01:05:30,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2018-10-01 01:05:30,671 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 378 [2018-10-01 01:05:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:30,672 INFO L225 Difference]: With dead ends: 385 [2018-10-01 01:05:30,673 INFO L226 Difference]: Without dead ends: 383 [2018-10-01 01:05:30,673 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:05:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-10-01 01:05:30,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-10-01 01:05:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-01 01:05:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2018-10-01 01:05:30,676 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 378 [2018-10-01 01:05:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:30,676 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2018-10-01 01:05:30,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states. [2018-10-01 01:05:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2018-10-01 01:05:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-01 01:05:30,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:30,678 INFO L375 BasicCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:30,678 INFO L423 AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:30,678 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:30,678 INFO L82 PathProgramCache]: Analyzing trace with hash 671457784, now seen corresponding path program 94 times [2018-10-01 01:05:30,678 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:30,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:30,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:30,679 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:30,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:31,294 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:31,294 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:31,313 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:31,390 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:31,390 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:31,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:32,089 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:32,089 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96] total 96 [2018-10-01 01:05:32,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2018-10-01 01:05:32,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2018-10-01 01:05:32,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:32,091 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 97 states. [2018-10-01 01:05:32,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:32,843 INFO L93 Difference]: Finished difference Result 389 states and 389 transitions. [2018-10-01 01:05:32,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-01 01:05:32,843 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 382 [2018-10-01 01:05:32,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:32,844 INFO L225 Difference]: With dead ends: 389 [2018-10-01 01:05:32,845 INFO L226 Difference]: Without dead ends: 387 [2018-10-01 01:05:32,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2018-10-01 01:05:32,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2018-10-01 01:05:32,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2018-10-01 01:05:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 387 transitions. [2018-10-01 01:05:32,848 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 387 transitions. Word has length 382 [2018-10-01 01:05:32,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:32,848 INFO L480 AbstractCegarLoop]: Abstraction has 387 states and 387 transitions. [2018-10-01 01:05:32,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 97 states. [2018-10-01 01:05:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 387 transitions. [2018-10-01 01:05:32,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2018-10-01 01:05:32,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:32,850 INFO L375 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:32,850 INFO L423 AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:32,850 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:32,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1782920098, now seen corresponding path program 95 times [2018-10-01 01:05:32,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:32,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:32,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:32,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:32,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:33,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:33,480 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:33,500 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:33,669 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2018-10-01 01:05:33,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:33,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 17955 backedges. 0 proven. 17955 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:34,325 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:34,325 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 97 [2018-10-01 01:05:34,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-01 01:05:34,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-01 01:05:34,326 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:34,327 INFO L87 Difference]: Start difference. First operand 387 states and 387 transitions. Second operand 98 states. [2018-10-01 01:05:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:35,296 INFO L93 Difference]: Finished difference Result 393 states and 393 transitions. [2018-10-01 01:05:35,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-01 01:05:35,296 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 386 [2018-10-01 01:05:35,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:35,298 INFO L225 Difference]: With dead ends: 393 [2018-10-01 01:05:35,298 INFO L226 Difference]: Without dead ends: 391 [2018-10-01 01:05:35,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time [2018-10-01 01:05:35,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-01 01:05:35,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2018-10-01 01:05:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-10-01 01:05:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 391 transitions. [2018-10-01 01:05:35,302 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 391 transitions. Word has length 386 [2018-10-01 01:05:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:35,302 INFO L480 AbstractCegarLoop]: Abstraction has 391 states and 391 transitions. [2018-10-01 01:05:35,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-01 01:05:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 391 transitions. [2018-10-01 01:05:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-01 01:05:35,303 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:35,304 INFO L375 BasicCegarLoop]: trace histogram [96, 96, 96, 96, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:35,304 INFO L423 AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:35,304 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:35,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2041569356, now seen corresponding path program 96 times [2018-10-01 01:05:35,304 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:35,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:35,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:35,305 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:35,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:35,983 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:35,983 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:35,991 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:36,144 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2018-10-01 01:05:36,145 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:36,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 18336 backedges. 0 proven. 18336 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:36,809 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:36,810 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 98 [2018-10-01 01:05:36,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2018-10-01 01:05:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2018-10-01 01:05:36,811 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:36,811 INFO L87 Difference]: Start difference. First operand 391 states and 391 transitions. Second operand 99 states. [2018-10-01 01:05:37,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:37,518 INFO L93 Difference]: Finished difference Result 397 states and 397 transitions. [2018-10-01 01:05:37,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2018-10-01 01:05:37,518 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 390 [2018-10-01 01:05:37,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:37,520 INFO L225 Difference]: With dead ends: 397 [2018-10-01 01:05:37,520 INFO L226 Difference]: Without dead ends: 395 [2018-10-01 01:05:37,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2018-10-01 01:05:37,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2018-10-01 01:05:37,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-10-01 01:05:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 395 transitions. [2018-10-01 01:05:37,523 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 395 transitions. Word has length 390 [2018-10-01 01:05:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:37,523 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 395 transitions. [2018-10-01 01:05:37,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 99 states. [2018-10-01 01:05:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 395 transitions. [2018-10-01 01:05:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-01 01:05:37,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:37,525 INFO L375 BasicCegarLoop]: trace histogram [97, 97, 97, 97, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:37,525 INFO L423 AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:37,525 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:37,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1161832438, now seen corresponding path program 97 times [2018-10-01 01:05:37,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:37,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:37,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:37,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:37,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:38,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:38,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:38,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:38,262 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18721 backedges. 0 proven. 18721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:38,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:38,940 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 99 [2018-10-01 01:05:38,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states [2018-10-01 01:05:38,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2018-10-01 01:05:38,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:38,941 INFO L87 Difference]: Start difference. First operand 395 states and 395 transitions. Second operand 100 states. [2018-10-01 01:05:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:39,806 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2018-10-01 01:05:39,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2018-10-01 01:05:39,807 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 394 [2018-10-01 01:05:39,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:39,808 INFO L225 Difference]: With dead ends: 401 [2018-10-01 01:05:39,808 INFO L226 Difference]: Without dead ends: 399 [2018-10-01 01:05:39,808 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:39,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-10-01 01:05:39,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2018-10-01 01:05:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2018-10-01 01:05:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 399 transitions. [2018-10-01 01:05:39,811 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 399 transitions. Word has length 394 [2018-10-01 01:05:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:39,812 INFO L480 AbstractCegarLoop]: Abstraction has 399 states and 399 transitions. [2018-10-01 01:05:39,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states. [2018-10-01 01:05:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 399 transitions. [2018-10-01 01:05:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-01 01:05:39,813 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:39,813 INFO L375 BasicCegarLoop]: trace histogram [98, 98, 98, 98, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:39,813 INFO L423 AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:39,814 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1162835296, now seen corresponding path program 98 times [2018-10-01 01:05:39,814 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:39,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:39,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:39,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:39,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:40,707 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:40,707 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:40,721 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:40,801 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:40,801 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:40,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 19110 backedges. 0 proven. 19110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:41,499 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:41,500 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 100] total 100 [2018-10-01 01:05:41,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2018-10-01 01:05:41,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2018-10-01 01:05:41,501 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:41,501 INFO L87 Difference]: Start difference. First operand 399 states and 399 transitions. Second operand 101 states. [2018-10-01 01:05:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:42,357 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2018-10-01 01:05:42,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2018-10-01 01:05:42,357 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 398 [2018-10-01 01:05:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:42,358 INFO L225 Difference]: With dead ends: 405 [2018-10-01 01:05:42,359 INFO L226 Difference]: Without dead ends: 403 [2018-10-01 01:05:42,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:05:42,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2018-10-01 01:05:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2018-10-01 01:05:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2018-10-01 01:05:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 403 transitions. [2018-10-01 01:05:42,362 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 403 transitions. Word has length 398 [2018-10-01 01:05:42,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:42,362 INFO L480 AbstractCegarLoop]: Abstraction has 403 states and 403 transitions. [2018-10-01 01:05:42,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 101 states. [2018-10-01 01:05:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 403 transitions. [2018-10-01 01:05:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-10-01 01:05:42,364 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:42,364 INFO L375 BasicCegarLoop]: trace histogram [99, 99, 99, 99, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:42,364 INFO L423 AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:42,365 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1719371850, now seen corresponding path program 99 times [2018-10-01 01:05:42,365 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:42,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:42,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:42,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:42,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:43,038 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:43,038 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:43,038 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:43,046 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:43,237 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2018-10-01 01:05:43,237 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:43,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 19503 backedges. 0 proven. 19503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:43,948 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:43,948 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 101 [2018-10-01 01:05:43,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states [2018-10-01 01:05:43,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2018-10-01 01:05:43,950 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:43,950 INFO L87 Difference]: Start difference. First operand 403 states and 403 transitions. Second operand 102 states. [2018-10-01 01:05:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:44,862 INFO L93 Difference]: Finished difference Result 409 states and 409 transitions. [2018-10-01 01:05:44,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-01 01:05:44,863 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 402 [2018-10-01 01:05:44,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:44,864 INFO L225 Difference]: With dead ends: 409 [2018-10-01 01:05:44,864 INFO L226 Difference]: Without dead ends: 407 [2018-10-01 01:05:44,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-10-01 01:05:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-10-01 01:05:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-10-01 01:05:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2018-10-01 01:05:44,869 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 402 [2018-10-01 01:05:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:44,869 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2018-10-01 01:05:44,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states. [2018-10-01 01:05:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2018-10-01 01:05:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-10-01 01:05:44,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:44,871 INFO L375 BasicCegarLoop]: trace histogram [100, 100, 100, 100, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:44,872 INFO L423 AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:44,872 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:44,872 INFO L82 PathProgramCache]: Analyzing trace with hash 333160692, now seen corresponding path program 100 times [2018-10-01 01:05:44,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:44,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:44,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:44,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:44,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:45,868 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:45,868 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:45,876 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:05:45,956 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:05:45,956 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:45,962 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 19900 backedges. 0 proven. 19900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:46,676 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:46,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 102] total 102 [2018-10-01 01:05:46,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-10-01 01:05:46,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-10-01 01:05:46,678 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:46,678 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand 103 states. [2018-10-01 01:05:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:47,694 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2018-10-01 01:05:47,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-10-01 01:05:47,694 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 406 [2018-10-01 01:05:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:47,696 INFO L225 Difference]: With dead ends: 413 [2018-10-01 01:05:47,696 INFO L226 Difference]: Without dead ends: 411 [2018-10-01 01:05:47,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:05:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2018-10-01 01:05:47,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2018-10-01 01:05:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2018-10-01 01:05:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2018-10-01 01:05:47,700 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 406 [2018-10-01 01:05:47,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:47,700 INFO L480 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2018-10-01 01:05:47,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-10-01 01:05:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2018-10-01 01:05:47,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2018-10-01 01:05:47,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:47,702 INFO L375 BasicCegarLoop]: trace histogram [101, 101, 101, 101, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:47,702 INFO L423 AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:47,702 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:47,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1825264798, now seen corresponding path program 101 times [2018-10-01 01:05:47,703 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:47,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:47,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:47,703 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:47,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:48,435 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:48,435 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:48,441 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:05:48,616 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 102 check-sat command(s) [2018-10-01 01:05:48,616 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:48,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20301 backedges. 0 proven. 20301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:49,448 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:49,448 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 103 [2018-10-01 01:05:49,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states [2018-10-01 01:05:49,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2018-10-01 01:05:49,449 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:49,450 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand 104 states. [2018-10-01 01:05:50,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:50,636 INFO L93 Difference]: Finished difference Result 417 states and 417 transitions. [2018-10-01 01:05:50,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-01 01:05:50,637 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 410 [2018-10-01 01:05:50,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:50,638 INFO L225 Difference]: With dead ends: 417 [2018-10-01 01:05:50,638 INFO L226 Difference]: Without dead ends: 415 [2018-10-01 01:05:50,638 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:05:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-01 01:05:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-10-01 01:05:50,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-10-01 01:05:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 415 transitions. [2018-10-01 01:05:50,642 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 415 transitions. Word has length 410 [2018-10-01 01:05:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:50,643 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 415 transitions. [2018-10-01 01:05:50,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states. [2018-10-01 01:05:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 415 transitions. [2018-10-01 01:05:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-01 01:05:50,645 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:50,645 INFO L375 BasicCegarLoop]: trace histogram [102, 102, 102, 102, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:50,650 INFO L423 AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:50,650 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:50,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1710939320, now seen corresponding path program 102 times [2018-10-01 01:05:50,650 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:50,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:50,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:50,651 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:50,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:51,409 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:51,409 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:51,417 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:05:51,590 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 103 check-sat command(s) [2018-10-01 01:05:51,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:51,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 20706 backedges. 0 proven. 20706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:52,329 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:52,329 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 104] total 104 [2018-10-01 01:05:52,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2018-10-01 01:05:52,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2018-10-01 01:05:52,331 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:52,331 INFO L87 Difference]: Start difference. First operand 415 states and 415 transitions. Second operand 105 states. [2018-10-01 01:05:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:53,399 INFO L93 Difference]: Finished difference Result 421 states and 421 transitions. [2018-10-01 01:05:53,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2018-10-01 01:05:53,400 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 414 [2018-10-01 01:05:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:53,401 INFO L225 Difference]: With dead ends: 421 [2018-10-01 01:05:53,401 INFO L226 Difference]: Without dead ends: 419 [2018-10-01 01:05:53,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:05:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-10-01 01:05:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2018-10-01 01:05:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-10-01 01:05:53,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2018-10-01 01:05:53,405 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 414 [2018-10-01 01:05:53,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:53,406 INFO L480 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2018-10-01 01:05:53,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 105 states. [2018-10-01 01:05:53,406 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2018-10-01 01:05:53,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-10-01 01:05:53,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:53,408 INFO L375 BasicCegarLoop]: trace histogram [103, 103, 103, 103, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:53,408 INFO L423 AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:53,408 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:53,408 INFO L82 PathProgramCache]: Analyzing trace with hash -486306574, now seen corresponding path program 103 times [2018-10-01 01:05:53,409 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:53,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:53,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:53,409 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:53,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:54,126 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:54,126 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:54,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:54,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 21115 backedges. 0 proven. 21115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:54,946 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:54,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 105 [2018-10-01 01:05:54,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states [2018-10-01 01:05:54,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2018-10-01 01:05:54,948 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:54,948 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 106 states. [2018-10-01 01:05:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:55,989 INFO L93 Difference]: Finished difference Result 425 states and 425 transitions. [2018-10-01 01:05:55,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-10-01 01:05:55,990 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 418 [2018-10-01 01:05:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:55,990 INFO L225 Difference]: With dead ends: 425 [2018-10-01 01:05:55,990 INFO L226 Difference]: Without dead ends: 423 [2018-10-01 01:05:55,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-10-01 01:05:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-10-01 01:05:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2018-10-01 01:05:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-10-01 01:05:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 423 transitions. [2018-10-01 01:05:55,994 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 423 transitions. Word has length 418 [2018-10-01 01:05:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:55,995 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 423 transitions. [2018-10-01 01:05:55,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states. [2018-10-01 01:05:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 423 transitions. [2018-10-01 01:05:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-10-01 01:05:55,996 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:55,996 INFO L375 BasicCegarLoop]: trace histogram [104, 104, 104, 104, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:55,997 INFO L423 AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:55,997 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1308692892, now seen corresponding path program 104 times [2018-10-01 01:05:55,997 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:55,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:55,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:55,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:05:55,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:56,762 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:56,762 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:56,769 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:05:56,846 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:05:56,846 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:56,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:05:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 21528 backedges. 0 proven. 21528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:57,614 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:05:57,615 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 106] total 106 [2018-10-01 01:05:57,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2018-10-01 01:05:57,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2018-10-01 01:05:57,616 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:05:57,616 INFO L87 Difference]: Start difference. First operand 423 states and 423 transitions. Second operand 107 states. [2018-10-01 01:05:58,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:05:58,748 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2018-10-01 01:05:58,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2018-10-01 01:05:58,749 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 422 [2018-10-01 01:05:58,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:05:58,749 INFO L225 Difference]: With dead ends: 429 [2018-10-01 01:05:58,750 INFO L226 Difference]: Without dead ends: 427 [2018-10-01 01:05:58,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:05:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2018-10-01 01:05:58,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2018-10-01 01:05:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-10-01 01:05:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 427 transitions. [2018-10-01 01:05:58,753 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 427 transitions. Word has length 422 [2018-10-01 01:05:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:05:58,753 INFO L480 AbstractCegarLoop]: Abstraction has 427 states and 427 transitions. [2018-10-01 01:05:58,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 107 states. [2018-10-01 01:05:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 427 transitions. [2018-10-01 01:05:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-01 01:05:58,756 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:05:58,756 INFO L375 BasicCegarLoop]: trace histogram [105, 105, 105, 105, 1, 1, 1, 1, 1, 1] [2018-10-01 01:05:58,756 INFO L423 AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:05:58,756 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:05:58,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1073230150, now seen corresponding path program 105 times [2018-10-01 01:05:58,757 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:05:58,757 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:05:58,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:58,757 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:05:58,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:05:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:05:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:05:59,496 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:05:59,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:05:59,509 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:05:59,710 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 106 check-sat command(s) [2018-10-01 01:05:59,710 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:05:59,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:00,440 INFO L134 CoverageAnalysis]: Checked inductivity of 21945 backedges. 0 proven. 21945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:00,460 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:00,461 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 107 [2018-10-01 01:06:00,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states [2018-10-01 01:06:00,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2018-10-01 01:06:00,462 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:00,462 INFO L87 Difference]: Start difference. First operand 427 states and 427 transitions. Second operand 108 states. [2018-10-01 01:06:01,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:01,556 INFO L93 Difference]: Finished difference Result 433 states and 433 transitions. [2018-10-01 01:06:01,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-10-01 01:06:01,556 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 426 [2018-10-01 01:06:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:01,557 INFO L225 Difference]: With dead ends: 433 [2018-10-01 01:06:01,557 INFO L226 Difference]: Without dead ends: 431 [2018-10-01 01:06:01,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:06:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-10-01 01:06:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2018-10-01 01:06:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2018-10-01 01:06:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 431 transitions. [2018-10-01 01:06:01,560 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 431 transitions. Word has length 426 [2018-10-01 01:06:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:01,560 INFO L480 AbstractCegarLoop]: Abstraction has 431 states and 431 transitions. [2018-10-01 01:06:01,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states. [2018-10-01 01:06:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 431 transitions. [2018-10-01 01:06:01,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2018-10-01 01:06:01,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:01,562 INFO L375 BasicCegarLoop]: trace histogram [106, 106, 106, 106, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:01,562 INFO L423 AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:01,562 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:01,562 INFO L82 PathProgramCache]: Analyzing trace with hash 480472048, now seen corresponding path program 106 times [2018-10-01 01:06:01,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:01,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:01,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:01,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:01,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:02,291 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:02,291 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 [2018-10-01 01:06:02,299 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:02,385 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:02,386 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:02,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 22366 backedges. 0 proven. 22366 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:03,175 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:03,175 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108] total 108 [2018-10-01 01:06:03,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2018-10-01 01:06:03,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2018-10-01 01:06:03,177 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:03,177 INFO L87 Difference]: Start difference. First operand 431 states and 431 transitions. Second operand 109 states. [2018-10-01 01:06:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:04,285 INFO L93 Difference]: Finished difference Result 437 states and 437 transitions. [2018-10-01 01:06:04,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-01 01:06:04,286 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 430 [2018-10-01 01:06:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:04,286 INFO L225 Difference]: With dead ends: 437 [2018-10-01 01:06:04,286 INFO L226 Difference]: Without dead ends: 435 [2018-10-01 01:06:04,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:06:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2018-10-01 01:06:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2018-10-01 01:06:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2018-10-01 01:06:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2018-10-01 01:06:04,290 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 430 [2018-10-01 01:06:04,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:04,291 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2018-10-01 01:06:04,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 109 states. [2018-10-01 01:06:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2018-10-01 01:06:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-10-01 01:06:04,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:04,292 INFO L375 BasicCegarLoop]: trace histogram [107, 107, 107, 107, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:04,293 INFO L423 AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:04,293 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:04,293 INFO L82 PathProgramCache]: Analyzing trace with hash -427998822, now seen corresponding path program 107 times [2018-10-01 01:06:04,293 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:04,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:04,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:04,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:04,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:05,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:05,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:06:05,145 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:05,339 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2018-10-01 01:06:05,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:05,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22791 backedges. 0 proven. 22791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:06,318 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:06,319 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 109 [2018-10-01 01:06:06,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states [2018-10-01 01:06:06,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2018-10-01 01:06:06,320 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:06,320 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand 110 states. [2018-10-01 01:06:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:07,583 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2018-10-01 01:06:07,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2018-10-01 01:06:07,584 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 434 [2018-10-01 01:06:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:07,585 INFO L225 Difference]: With dead ends: 441 [2018-10-01 01:06:07,585 INFO L226 Difference]: Without dead ends: 439 [2018-10-01 01:06:07,585 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:06:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-10-01 01:06:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2018-10-01 01:06:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2018-10-01 01:06:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2018-10-01 01:06:07,587 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 434 [2018-10-01 01:06:07,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:07,588 INFO L480 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2018-10-01 01:06:07,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states. [2018-10-01 01:06:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2018-10-01 01:06:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2018-10-01 01:06:07,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:07,589 INFO L375 BasicCegarLoop]: trace histogram [108, 108, 108, 108, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:07,589 INFO L423 AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:07,590 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:07,590 INFO L82 PathProgramCache]: Analyzing trace with hash -557829564, now seen corresponding path program 108 times [2018-10-01 01:06:07,590 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:07,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:07,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:07,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:07,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:08,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:08,343 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 [2018-10-01 01:06:08,350 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:06:08,552 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 109 check-sat command(s) [2018-10-01 01:06:08,553 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:08,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 23220 backedges. 0 proven. 23220 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:09,338 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:09,338 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110] total 110 [2018-10-01 01:06:09,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2018-10-01 01:06:09,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2018-10-01 01:06:09,340 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:09,340 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand 111 states. [2018-10-01 01:06:10,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:10,501 INFO L93 Difference]: Finished difference Result 445 states and 445 transitions. [2018-10-01 01:06:10,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-01 01:06:10,502 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 438 [2018-10-01 01:06:10,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:10,503 INFO L225 Difference]: With dead ends: 445 [2018-10-01 01:06:10,503 INFO L226 Difference]: Without dead ends: 443 [2018-10-01 01:06:10,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:06:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2018-10-01 01:06:10,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2018-10-01 01:06:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2018-10-01 01:06:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 443 transitions. [2018-10-01 01:06:10,507 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 443 transitions. Word has length 438 [2018-10-01 01:06:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:10,507 INFO L480 AbstractCegarLoop]: Abstraction has 443 states and 443 transitions. [2018-10-01 01:06:10,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 111 states. [2018-10-01 01:06:10,507 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 443 transitions. [2018-10-01 01:06:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-01 01:06:10,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:10,509 INFO L375 BasicCegarLoop]: trace histogram [109, 109, 109, 109, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:10,509 INFO L423 AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:10,509 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash 627490286, now seen corresponding path program 109 times [2018-10-01 01:06:10,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:10,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:10,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:10,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:10,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:11,436 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:11,436 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:06:11,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:11,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:12,290 INFO L134 CoverageAnalysis]: Checked inductivity of 23653 backedges. 0 proven. 23653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:12,310 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:12,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 111 [2018-10-01 01:06:12,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states [2018-10-01 01:06:12,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2018-10-01 01:06:12,313 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:12,313 INFO L87 Difference]: Start difference. First operand 443 states and 443 transitions. Second operand 112 states. [2018-10-01 01:06:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:13,488 INFO L93 Difference]: Finished difference Result 449 states and 449 transitions. [2018-10-01 01:06:13,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2018-10-01 01:06:13,489 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 442 [2018-10-01 01:06:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:13,490 INFO L225 Difference]: With dead ends: 449 [2018-10-01 01:06:13,490 INFO L226 Difference]: Without dead ends: 447 [2018-10-01 01:06:13,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:06:13,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-10-01 01:06:13,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-10-01 01:06:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-10-01 01:06:13,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 447 transitions. [2018-10-01 01:06:13,493 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 447 transitions. Word has length 442 [2018-10-01 01:06:13,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:13,493 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 447 transitions. [2018-10-01 01:06:13,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states. [2018-10-01 01:06:13,493 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 447 transitions. [2018-10-01 01:06:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-10-01 01:06:13,494 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:13,495 INFO L375 BasicCegarLoop]: trace histogram [110, 110, 110, 110, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:13,495 INFO L423 AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:13,495 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:13,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1496016024, now seen corresponding path program 110 times [2018-10-01 01:06:13,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:13,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:13,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:13,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:13,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:14,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:14,379 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 [2018-10-01 01:06:14,387 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:14,473 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:14,473 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:14,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 24090 backedges. 0 proven. 24090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:15,265 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:15,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 112] total 112 [2018-10-01 01:06:15,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2018-10-01 01:06:15,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2018-10-01 01:06:15,267 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:15,267 INFO L87 Difference]: Start difference. First operand 447 states and 447 transitions. Second operand 113 states. [2018-10-01 01:06:16,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:16,396 INFO L93 Difference]: Finished difference Result 453 states and 453 transitions. [2018-10-01 01:06:16,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2018-10-01 01:06:16,396 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 446 [2018-10-01 01:06:16,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:16,397 INFO L225 Difference]: With dead ends: 453 [2018-10-01 01:06:16,397 INFO L226 Difference]: Without dead ends: 451 [2018-10-01 01:06:16,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:06:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2018-10-01 01:06:16,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2018-10-01 01:06:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2018-10-01 01:06:16,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 451 transitions. [2018-10-01 01:06:16,400 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 451 transitions. Word has length 446 [2018-10-01 01:06:16,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:16,400 INFO L480 AbstractCegarLoop]: Abstraction has 451 states and 451 transitions. [2018-10-01 01:06:16,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 113 states. [2018-10-01 01:06:16,400 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 451 transitions. [2018-10-01 01:06:16,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-10-01 01:06:16,401 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:16,402 INFO L375 BasicCegarLoop]: trace histogram [111, 111, 111, 111, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:16,402 INFO L423 AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:16,402 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash 931702338, now seen corresponding path program 111 times [2018-10-01 01:06:16,402 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:16,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:16,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:16,403 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:16,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:17,206 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:17,206 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 [2018-10-01 01:06:17,212 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:17,421 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 112 check-sat command(s) [2018-10-01 01:06:17,422 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:17,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 24531 backedges. 0 proven. 24531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:18,226 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:18,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 113 [2018-10-01 01:06:18,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states [2018-10-01 01:06:18,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2018-10-01 01:06:18,227 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:18,227 INFO L87 Difference]: Start difference. First operand 451 states and 451 transitions. Second operand 114 states. [2018-10-01 01:06:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:19,708 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2018-10-01 01:06:19,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2018-10-01 01:06:19,708 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 450 [2018-10-01 01:06:19,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:19,709 INFO L225 Difference]: With dead ends: 457 [2018-10-01 01:06:19,710 INFO L226 Difference]: Without dead ends: 455 [2018-10-01 01:06:19,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-10-01 01:06:19,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2018-10-01 01:06:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2018-10-01 01:06:19,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2018-10-01 01:06:19,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2018-10-01 01:06:19,713 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 450 [2018-10-01 01:06:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:19,713 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2018-10-01 01:06:19,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states. [2018-10-01 01:06:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2018-10-01 01:06:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-10-01 01:06:19,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:19,715 INFO L375 BasicCegarLoop]: trace histogram [112, 112, 112, 112, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:19,715 INFO L423 AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:19,715 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:19,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1018757868, now seen corresponding path program 112 times [2018-10-01 01:06:19,715 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:19,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:19,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:19,716 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:19,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:20,508 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:20,508 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 [2018-10-01 01:06:20,515 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:20,606 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:20,607 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:20,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 24976 backedges. 0 proven. 24976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:21,652 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:21,652 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 114 [2018-10-01 01:06:21,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2018-10-01 01:06:21,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2018-10-01 01:06:21,654 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:21,654 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 115 states. [2018-10-01 01:06:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:23,136 INFO L93 Difference]: Finished difference Result 461 states and 461 transitions. [2018-10-01 01:06:23,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2018-10-01 01:06:23,136 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 454 [2018-10-01 01:06:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:23,138 INFO L225 Difference]: With dead ends: 461 [2018-10-01 01:06:23,138 INFO L226 Difference]: Without dead ends: 459 [2018-10-01 01:06:23,138 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:06:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2018-10-01 01:06:23,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2018-10-01 01:06:23,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 459 states. [2018-10-01 01:06:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 459 transitions. [2018-10-01 01:06:23,141 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 459 transitions. Word has length 454 [2018-10-01 01:06:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:23,141 INFO L480 AbstractCegarLoop]: Abstraction has 459 states and 459 transitions. [2018-10-01 01:06:23,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 115 states. [2018-10-01 01:06:23,142 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 459 transitions. [2018-10-01 01:06:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-10-01 01:06:23,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:23,143 INFO L375 BasicCegarLoop]: trace histogram [113, 113, 113, 113, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:23,143 INFO L423 AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:23,143 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:23,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1136065174, now seen corresponding path program 113 times [2018-10-01 01:06:23,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:23,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:23,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:23,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:23,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:24,008 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:24,008 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 [2018-10-01 01:06:24,015 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:24,244 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 114 check-sat command(s) [2018-10-01 01:06:24,244 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:24,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 25425 backedges. 0 proven. 25425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:25,233 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:25,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 115 [2018-10-01 01:06:25,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states [2018-10-01 01:06:25,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2018-10-01 01:06:25,234 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:25,234 INFO L87 Difference]: Start difference. First operand 459 states and 459 transitions. Second operand 116 states. [2018-10-01 01:06:26,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:26,769 INFO L93 Difference]: Finished difference Result 465 states and 465 transitions. [2018-10-01 01:06:26,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2018-10-01 01:06:26,769 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 458 [2018-10-01 01:06:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:26,770 INFO L225 Difference]: With dead ends: 465 [2018-10-01 01:06:26,770 INFO L226 Difference]: Without dead ends: 463 [2018-10-01 01:06:26,770 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:06:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-10-01 01:06:26,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2018-10-01 01:06:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2018-10-01 01:06:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2018-10-01 01:06:26,773 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 458 [2018-10-01 01:06:26,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:26,773 INFO L480 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2018-10-01 01:06:26,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states. [2018-10-01 01:06:26,773 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2018-10-01 01:06:26,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-10-01 01:06:26,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:26,776 INFO L375 BasicCegarLoop]: trace histogram [114, 114, 114, 114, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:26,776 INFO L423 AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:26,776 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:26,776 INFO L82 PathProgramCache]: Analyzing trace with hash 641535296, now seen corresponding path program 114 times [2018-10-01 01:06:26,776 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:26,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:26,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:26,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:26,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:27,585 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:27,585 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 [2018-10-01 01:06:27,591 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:06:27,808 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 115 check-sat command(s) [2018-10-01 01:06:27,808 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:27,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 25878 backedges. 0 proven. 25878 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:28,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:28,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [116, 116] total 116 [2018-10-01 01:06:28,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2018-10-01 01:06:28,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2018-10-01 01:06:28,618 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:28,618 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand 117 states. [2018-10-01 01:06:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:29,667 INFO L93 Difference]: Finished difference Result 469 states and 469 transitions. [2018-10-01 01:06:29,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-10-01 01:06:29,668 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 462 [2018-10-01 01:06:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:29,669 INFO L225 Difference]: With dead ends: 469 [2018-10-01 01:06:29,669 INFO L226 Difference]: Without dead ends: 467 [2018-10-01 01:06:29,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:06:29,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2018-10-01 01:06:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 467. [2018-10-01 01:06:29,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2018-10-01 01:06:29,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 467 transitions. [2018-10-01 01:06:29,672 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 467 transitions. Word has length 462 [2018-10-01 01:06:29,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:29,673 INFO L480 AbstractCegarLoop]: Abstraction has 467 states and 467 transitions. [2018-10-01 01:06:29,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 117 states. [2018-10-01 01:06:29,673 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 467 transitions. [2018-10-01 01:06:29,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2018-10-01 01:06:29,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:29,675 INFO L375 BasicCegarLoop]: trace histogram [115, 115, 115, 115, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:29,675 INFO L423 AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:29,675 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:29,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1556462314, now seen corresponding path program 115 times [2018-10-01 01:06:29,675 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:29,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:29,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:29,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:29,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:30,539 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:30,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:30,539 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:06:30,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:30,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:31,500 INFO L134 CoverageAnalysis]: Checked inductivity of 26335 backedges. 0 proven. 26335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:31,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:31,520 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 117 [2018-10-01 01:06:31,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states [2018-10-01 01:06:31,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2018-10-01 01:06:31,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:31,522 INFO L87 Difference]: Start difference. First operand 467 states and 467 transitions. Second operand 118 states. [2018-10-01 01:06:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:33,076 INFO L93 Difference]: Finished difference Result 473 states and 473 transitions. [2018-10-01 01:06:33,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2018-10-01 01:06:33,077 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 466 [2018-10-01 01:06:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:33,078 INFO L225 Difference]: With dead ends: 473 [2018-10-01 01:06:33,078 INFO L226 Difference]: Without dead ends: 471 [2018-10-01 01:06:33,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:06:33,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2018-10-01 01:06:33,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2018-10-01 01:06:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2018-10-01 01:06:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 471 transitions. [2018-10-01 01:06:33,081 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 471 transitions. Word has length 466 [2018-10-01 01:06:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:33,082 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 471 transitions. [2018-10-01 01:06:33,082 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states. [2018-10-01 01:06:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 471 transitions. [2018-10-01 01:06:33,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-10-01 01:06:33,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:33,083 INFO L375 BasicCegarLoop]: trace histogram [116, 116, 116, 116, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:33,084 INFO L423 AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:33,084 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:33,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1635023980, now seen corresponding path program 116 times [2018-10-01 01:06:33,084 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:33,084 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:33,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:33,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:33,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:33,920 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:33,920 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-10-01 01:06:33,929 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:34,017 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:34,018 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:34,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 26796 backedges. 0 proven. 26796 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:34,865 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:34,865 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118] total 118 [2018-10-01 01:06:34,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2018-10-01 01:06:34,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2018-10-01 01:06:34,866 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:34,867 INFO L87 Difference]: Start difference. First operand 471 states and 471 transitions. Second operand 119 states. [2018-10-01 01:06:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:36,190 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2018-10-01 01:06:36,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-10-01 01:06:36,191 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 470 [2018-10-01 01:06:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:36,192 INFO L225 Difference]: With dead ends: 477 [2018-10-01 01:06:36,192 INFO L226 Difference]: Without dead ends: 475 [2018-10-01 01:06:36,192 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:06:36,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2018-10-01 01:06:36,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2018-10-01 01:06:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2018-10-01 01:06:36,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 475 transitions. [2018-10-01 01:06:36,195 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 475 transitions. Word has length 470 [2018-10-01 01:06:36,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:36,195 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 475 transitions. [2018-10-01 01:06:36,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 119 states. [2018-10-01 01:06:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 475 transitions. [2018-10-01 01:06:36,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-01 01:06:36,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:36,197 INFO L375 BasicCegarLoop]: trace histogram [117, 117, 117, 117, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:36,197 INFO L423 AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:36,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2121734338, now seen corresponding path program 117 times [2018-10-01 01:06:36,198 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:36,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:36,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:36,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:36,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:37,209 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:37,209 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 [2018-10-01 01:06:37,218 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:37,444 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 118 check-sat command(s) [2018-10-01 01:06:37,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:37,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:38,278 INFO L134 CoverageAnalysis]: Checked inductivity of 27261 backedges. 0 proven. 27261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:38,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:38,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 119 [2018-10-01 01:06:38,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states [2018-10-01 01:06:38,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2018-10-01 01:06:38,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:38,300 INFO L87 Difference]: Start difference. First operand 475 states and 475 transitions. Second operand 120 states. [2018-10-01 01:06:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:39,619 INFO L93 Difference]: Finished difference Result 481 states and 481 transitions. [2018-10-01 01:06:39,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2018-10-01 01:06:39,620 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 474 [2018-10-01 01:06:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:39,620 INFO L225 Difference]: With dead ends: 481 [2018-10-01 01:06:39,621 INFO L226 Difference]: Without dead ends: 479 [2018-10-01 01:06:39,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:06:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-10-01 01:06:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-10-01 01:06:39,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-10-01 01:06:39,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2018-10-01 01:06:39,624 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 474 [2018-10-01 01:06:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:39,624 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2018-10-01 01:06:39,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states. [2018-10-01 01:06:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2018-10-01 01:06:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2018-10-01 01:06:39,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:39,626 INFO L375 BasicCegarLoop]: trace histogram [118, 118, 118, 118, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:39,626 INFO L423 AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:39,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:39,626 INFO L82 PathProgramCache]: Analyzing trace with hash 444098024, now seen corresponding path program 118 times [2018-10-01 01:06:39,626 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:39,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:39,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:39,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:39,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:40,516 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:40,516 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 [2018-10-01 01:06:40,523 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:06:40,623 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:06:40,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:40,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:41,466 INFO L134 CoverageAnalysis]: Checked inductivity of 27730 backedges. 0 proven. 27730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:41,486 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:41,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [120, 120] total 120 [2018-10-01 01:06:41,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2018-10-01 01:06:41,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2018-10-01 01:06:41,488 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:41,488 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand 121 states. [2018-10-01 01:06:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:43,061 INFO L93 Difference]: Finished difference Result 485 states and 485 transitions. [2018-10-01 01:06:43,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-10-01 01:06:43,061 INFO L78 Accepts]: Start accepts. Automaton has 121 states. Word has length 478 [2018-10-01 01:06:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:43,062 INFO L225 Difference]: With dead ends: 485 [2018-10-01 01:06:43,062 INFO L226 Difference]: Without dead ends: 483 [2018-10-01 01:06:43,062 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-10-01 01:06:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2018-10-01 01:06:43,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2018-10-01 01:06:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2018-10-01 01:06:43,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 483 transitions. [2018-10-01 01:06:43,066 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 483 transitions. Word has length 478 [2018-10-01 01:06:43,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:43,066 INFO L480 AbstractCegarLoop]: Abstraction has 483 states and 483 transitions. [2018-10-01 01:06:43,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 121 states. [2018-10-01 01:06:43,067 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 483 transitions. [2018-10-01 01:06:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2018-10-01 01:06:43,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:43,069 INFO L375 BasicCegarLoop]: trace histogram [119, 119, 119, 119, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:43,069 INFO L423 AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:43,069 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:43,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1663795310, now seen corresponding path program 119 times [2018-10-01 01:06:43,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:43,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:43,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:43,070 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:43,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:44,066 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:44,066 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 [2018-10-01 01:06:44,074 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:06:44,310 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 120 check-sat command(s) [2018-10-01 01:06:44,310 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:44,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:45,183 INFO L134 CoverageAnalysis]: Checked inductivity of 28203 backedges. 0 proven. 28203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:45,204 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:45,205 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 121 [2018-10-01 01:06:45,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-10-01 01:06:45,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-10-01 01:06:45,206 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:45,206 INFO L87 Difference]: Start difference. First operand 483 states and 483 transitions. Second operand 122 states. [2018-10-01 01:06:47,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:47,007 INFO L93 Difference]: Finished difference Result 489 states and 489 transitions. [2018-10-01 01:06:47,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-01 01:06:47,008 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 482 [2018-10-01 01:06:47,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:47,009 INFO L225 Difference]: With dead ends: 489 [2018-10-01 01:06:47,009 INFO L226 Difference]: Without dead ends: 487 [2018-10-01 01:06:47,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:06:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-10-01 01:06:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2018-10-01 01:06:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2018-10-01 01:06:47,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 487 transitions. [2018-10-01 01:06:47,013 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 487 transitions. Word has length 482 [2018-10-01 01:06:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:47,013 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 487 transitions. [2018-10-01 01:06:47,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-10-01 01:06:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 487 transitions. [2018-10-01 01:06:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2018-10-01 01:06:47,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:47,015 INFO L375 BasicCegarLoop]: trace histogram [120, 120, 120, 120, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:47,015 INFO L423 AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:47,015 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:47,016 INFO L82 PathProgramCache]: Analyzing trace with hash -86526916, now seen corresponding path program 120 times [2018-10-01 01:06:47,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:47,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:47,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:47,016 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:47,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:47,967 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:47,967 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 [2018-10-01 01:06:47,975 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:06:48,200 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 121 check-sat command(s) [2018-10-01 01:06:48,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:48,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 28680 backedges. 0 proven. 28680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:49,086 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:49,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [122, 122] total 122 [2018-10-01 01:06:49,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 123 states [2018-10-01 01:06:49,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 123 interpolants. [2018-10-01 01:06:49,088 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:49,088 INFO L87 Difference]: Start difference. First operand 487 states and 487 transitions. Second operand 123 states. [2018-10-01 01:06:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:50,249 INFO L93 Difference]: Finished difference Result 493 states and 493 transitions. [2018-10-01 01:06:50,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2018-10-01 01:06:50,249 INFO L78 Accepts]: Start accepts. Automaton has 123 states. Word has length 486 [2018-10-01 01:06:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:50,250 INFO L225 Difference]: With dead ends: 493 [2018-10-01 01:06:50,250 INFO L226 Difference]: Without dead ends: 491 [2018-10-01 01:06:50,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:06:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-10-01 01:06:50,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2018-10-01 01:06:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2018-10-01 01:06:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2018-10-01 01:06:50,253 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 486 [2018-10-01 01:06:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:50,254 INFO L480 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2018-10-01 01:06:50,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 123 states. [2018-10-01 01:06:50,254 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2018-10-01 01:06:50,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2018-10-01 01:06:50,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:50,255 INFO L375 BasicCegarLoop]: trace histogram [121, 121, 121, 121, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:50,256 INFO L423 AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:50,256 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:50,256 INFO L82 PathProgramCache]: Analyzing trace with hash -2055437338, now seen corresponding path program 121 times [2018-10-01 01:06:50,256 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:50,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:50,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:50,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:50,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:51,139 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:51,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:51,139 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 [2018-10-01 01:06:51,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:51,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 29161 backedges. 0 proven. 29161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:52,594 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:52,595 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 123 [2018-10-01 01:06:52,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states [2018-10-01 01:06:52,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2018-10-01 01:06:52,597 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:52,597 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 124 states. [2018-10-01 01:06:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:54,301 INFO L93 Difference]: Finished difference Result 497 states and 497 transitions. [2018-10-01 01:06:54,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2018-10-01 01:06:54,301 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 490 [2018-10-01 01:06:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:54,302 INFO L225 Difference]: With dead ends: 497 [2018-10-01 01:06:54,303 INFO L226 Difference]: Without dead ends: 495 [2018-10-01 01:06:54,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:06:54,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-10-01 01:06:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2018-10-01 01:06:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2018-10-01 01:06:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 495 transitions. [2018-10-01 01:06:54,307 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 495 transitions. Word has length 490 [2018-10-01 01:06:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:54,307 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 495 transitions. [2018-10-01 01:06:54,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states. [2018-10-01 01:06:54,307 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 495 transitions. [2018-10-01 01:06:54,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-10-01 01:06:54,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:54,310 INFO L375 BasicCegarLoop]: trace histogram [122, 122, 122, 122, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:54,310 INFO L423 AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:54,310 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:54,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1937936752, now seen corresponding path program 122 times [2018-10-01 01:06:54,310 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:54,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:54,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:54,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:06:54,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:55,308 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:55,308 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:55,315 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:06:55,406 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:06:55,406 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:55,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 29646 backedges. 0 proven. 29646 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:56,306 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:56,306 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [124, 124] total 124 [2018-10-01 01:06:56,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 125 states [2018-10-01 01:06:56,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2018-10-01 01:06:56,308 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:56,308 INFO L87 Difference]: Start difference. First operand 495 states and 495 transitions. Second operand 125 states. [2018-10-01 01:06:57,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:06:57,573 INFO L93 Difference]: Finished difference Result 501 states and 501 transitions. [2018-10-01 01:06:57,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2018-10-01 01:06:57,573 INFO L78 Accepts]: Start accepts. Automaton has 125 states. Word has length 494 [2018-10-01 01:06:57,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:06:57,574 INFO L225 Difference]: With dead ends: 501 [2018-10-01 01:06:57,574 INFO L226 Difference]: Without dead ends: 499 [2018-10-01 01:06:57,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:06:57,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2018-10-01 01:06:57,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2018-10-01 01:06:57,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2018-10-01 01:06:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 499 transitions. [2018-10-01 01:06:57,580 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 499 transitions. Word has length 494 [2018-10-01 01:06:57,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:06:57,580 INFO L480 AbstractCegarLoop]: Abstraction has 499 states and 499 transitions. [2018-10-01 01:06:57,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 125 states. [2018-10-01 01:06:57,581 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 499 transitions. [2018-10-01 01:06:57,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2018-10-01 01:06:57,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:06:57,582 INFO L375 BasicCegarLoop]: trace histogram [123, 123, 123, 123, 1, 1, 1, 1, 1, 1] [2018-10-01 01:06:57,583 INFO L423 AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:06:57,583 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:06:57,583 INFO L82 PathProgramCache]: Analyzing trace with hash -27986886, now seen corresponding path program 123 times [2018-10-01 01:06:57,583 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:06:57,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:06:57,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:57,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:06:57,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:06:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:06:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:58,487 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:06:58,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:06:58,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:06:58,745 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 124 check-sat command(s) [2018-10-01 01:06:58,745 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:06:58,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:06:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30135 backedges. 0 proven. 30135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:06:59,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:06:59,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 125 [2018-10-01 01:06:59,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states [2018-10-01 01:06:59,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2018-10-01 01:06:59,661 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:06:59,661 INFO L87 Difference]: Start difference. First operand 499 states and 499 transitions. Second operand 126 states. [2018-10-01 01:07:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:01,263 INFO L93 Difference]: Finished difference Result 505 states and 505 transitions. [2018-10-01 01:07:01,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2018-10-01 01:07:01,264 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 498 [2018-10-01 01:07:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:01,265 INFO L225 Difference]: With dead ends: 505 [2018-10-01 01:07:01,265 INFO L226 Difference]: Without dead ends: 503 [2018-10-01 01:07:01,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s Time [2018-10-01 01:07:01,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2018-10-01 01:07:01,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2018-10-01 01:07:01,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2018-10-01 01:07:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 503 transitions. [2018-10-01 01:07:01,268 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 503 transitions. Word has length 498 [2018-10-01 01:07:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:01,268 INFO L480 AbstractCegarLoop]: Abstraction has 503 states and 503 transitions. [2018-10-01 01:07:01,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states. [2018-10-01 01:07:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 503 transitions. [2018-10-01 01:07:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-10-01 01:07:01,270 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:01,270 INFO L375 BasicCegarLoop]: trace histogram [124, 124, 124, 124, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:01,270 INFO L423 AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:01,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:01,270 INFO L82 PathProgramCache]: Analyzing trace with hash 138253540, now seen corresponding path program 124 times [2018-10-01 01:07:01,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:01,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:01,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:01,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:01,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:02,228 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:02,228 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:02,235 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:07:02,338 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:07:02,338 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:02,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30628 backedges. 0 proven. 30628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:03,261 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:03,261 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [126, 126] total 126 [2018-10-01 01:07:03,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 127 states [2018-10-01 01:07:03,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2018-10-01 01:07:03,263 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:03,263 INFO L87 Difference]: Start difference. First operand 503 states and 503 transitions. Second operand 127 states. [2018-10-01 01:07:04,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:04,817 INFO L93 Difference]: Finished difference Result 509 states and 509 transitions. [2018-10-01 01:07:04,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2018-10-01 01:07:04,817 INFO L78 Accepts]: Start accepts. Automaton has 127 states. Word has length 502 [2018-10-01 01:07:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:04,818 INFO L225 Difference]: With dead ends: 509 [2018-10-01 01:07:04,818 INFO L226 Difference]: Without dead ends: 507 [2018-10-01 01:07:04,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:07:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2018-10-01 01:07:04,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2018-10-01 01:07:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2018-10-01 01:07:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 507 transitions. [2018-10-01 01:07:04,821 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 507 transitions. Word has length 502 [2018-10-01 01:07:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:04,822 INFO L480 AbstractCegarLoop]: Abstraction has 507 states and 507 transitions. [2018-10-01 01:07:04,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 127 states. [2018-10-01 01:07:04,822 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 507 transitions. [2018-10-01 01:07:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-01 01:07:04,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:04,825 INFO L375 BasicCegarLoop]: trace histogram [125, 125, 125, 125, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:04,825 INFO L423 AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:04,825 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:04,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1238249330, now seen corresponding path program 125 times [2018-10-01 01:07:04,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:04,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:04,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:04,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:04,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:05,814 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:05,814 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:05,814 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:05,823 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:07:06,110 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2018-10-01 01:07:06,110 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:06,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:07,006 INFO L134 CoverageAnalysis]: Checked inductivity of 31125 backedges. 0 proven. 31125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:07,043 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:07,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 127 [2018-10-01 01:07:07,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states [2018-10-01 01:07:07,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2018-10-01 01:07:07,045 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:07,045 INFO L87 Difference]: Start difference. First operand 507 states and 507 transitions. Second operand 128 states. [2018-10-01 01:07:08,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:08,349 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2018-10-01 01:07:08,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-10-01 01:07:08,350 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 506 [2018-10-01 01:07:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:08,351 INFO L225 Difference]: With dead ends: 513 [2018-10-01 01:07:08,351 INFO L226 Difference]: Without dead ends: 511 [2018-10-01 01:07:08,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 632 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:07:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-10-01 01:07:08,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2018-10-01 01:07:08,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-10-01 01:07:08,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 511 transitions. [2018-10-01 01:07:08,356 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 511 transitions. Word has length 506 [2018-10-01 01:07:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:08,356 INFO L480 AbstractCegarLoop]: Abstraction has 511 states and 511 transitions. [2018-10-01 01:07:08,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states. [2018-10-01 01:07:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 511 transitions. [2018-10-01 01:07:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-10-01 01:07:08,359 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:08,359 INFO L375 BasicCegarLoop]: trace histogram [126, 126, 126, 126, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:08,359 INFO L423 AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:08,359 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1830017224, now seen corresponding path program 126 times [2018-10-01 01:07:08,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:08,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:08,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:08,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:08,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:09,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:09,325 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:09,332 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:07:09,598 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 127 check-sat command(s) [2018-10-01 01:07:09,599 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:09,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 31626 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:10,555 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:10,556 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128] total 128 [2018-10-01 01:07:10,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2018-10-01 01:07:10,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2018-10-01 01:07:10,557 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:10,558 INFO L87 Difference]: Start difference. First operand 511 states and 511 transitions. Second operand 129 states. [2018-10-01 01:07:12,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:12,243 INFO L93 Difference]: Finished difference Result 517 states and 517 transitions. [2018-10-01 01:07:12,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-10-01 01:07:12,243 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 510 [2018-10-01 01:07:12,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:12,244 INFO L225 Difference]: With dead ends: 517 [2018-10-01 01:07:12,245 INFO L226 Difference]: Without dead ends: 515 [2018-10-01 01:07:12,245 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:07:12,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-01 01:07:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2018-10-01 01:07:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2018-10-01 01:07:12,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 515 transitions. [2018-10-01 01:07:12,248 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 515 transitions. Word has length 510 [2018-10-01 01:07:12,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:12,249 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 515 transitions. [2018-10-01 01:07:12,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 129 states. [2018-10-01 01:07:12,249 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 515 transitions. [2018-10-01 01:07:12,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-10-01 01:07:12,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:12,251 INFO L375 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:12,251 INFO L423 AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:12,251 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:12,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1206327522, now seen corresponding path program 127 times [2018-10-01 01:07:12,252 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:12,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:12,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:12,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:12,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:13,375 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:13,375 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:13,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:13,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:14,444 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:14,445 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 129 [2018-10-01 01:07:14,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states [2018-10-01 01:07:14,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2018-10-01 01:07:14,447 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:14,447 INFO L87 Difference]: Start difference. First operand 515 states and 515 transitions. Second operand 130 states. [2018-10-01 01:07:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:16,201 INFO L93 Difference]: Finished difference Result 521 states and 521 transitions. [2018-10-01 01:07:16,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-01 01:07:16,201 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 514 [2018-10-01 01:07:16,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:16,202 INFO L225 Difference]: With dead ends: 521 [2018-10-01 01:07:16,202 INFO L226 Difference]: Without dead ends: 519 [2018-10-01 01:07:16,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:07:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2018-10-01 01:07:16,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2018-10-01 01:07:16,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2018-10-01 01:07:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 519 transitions. [2018-10-01 01:07:16,206 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 519 transitions. Word has length 514 [2018-10-01 01:07:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:16,206 INFO L480 AbstractCegarLoop]: Abstraction has 519 states and 519 transitions. [2018-10-01 01:07:16,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states. [2018-10-01 01:07:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 519 transitions. [2018-10-01 01:07:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-10-01 01:07:16,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:16,208 INFO L375 BasicCegarLoop]: trace histogram [128, 128, 128, 128, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:16,209 INFO L423 AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:16,209 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:16,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1029514636, now seen corresponding path program 128 times [2018-10-01 01:07:16,209 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:16,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:16,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:16,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:17,186 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:17,186 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:17,194 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:07:17,292 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:07:17,292 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:17,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 32640 backedges. 0 proven. 32640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:18,418 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:18,418 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 130] total 130 [2018-10-01 01:07:18,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 131 states [2018-10-01 01:07:18,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2018-10-01 01:07:18,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:18,420 INFO L87 Difference]: Start difference. First operand 519 states and 519 transitions. Second operand 131 states. [2018-10-01 01:07:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:19,767 INFO L93 Difference]: Finished difference Result 525 states and 525 transitions. [2018-10-01 01:07:19,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2018-10-01 01:07:19,767 INFO L78 Accepts]: Start accepts. Automaton has 131 states. Word has length 518 [2018-10-01 01:07:19,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:19,768 INFO L225 Difference]: With dead ends: 525 [2018-10-01 01:07:19,768 INFO L226 Difference]: Without dead ends: 523 [2018-10-01 01:07:19,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:07:19,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2018-10-01 01:07:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2018-10-01 01:07:19,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2018-10-01 01:07:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 523 transitions. [2018-10-01 01:07:19,773 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 523 transitions. Word has length 518 [2018-10-01 01:07:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:19,773 INFO L480 AbstractCegarLoop]: Abstraction has 523 states and 523 transitions. [2018-10-01 01:07:19,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 131 states. [2018-10-01 01:07:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 523 transitions. [2018-10-01 01:07:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-10-01 01:07:19,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:19,776 INFO L375 BasicCegarLoop]: trace histogram [129, 129, 129, 129, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:19,776 INFO L423 AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:19,776 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:19,776 INFO L82 PathProgramCache]: Analyzing trace with hash 977849654, now seen corresponding path program 129 times [2018-10-01 01:07:19,777 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:19,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:19,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:19,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:19,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:20,807 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:20,807 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:20,814 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:07:21,084 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 130 check-sat command(s) [2018-10-01 01:07:21,084 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:21,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 33153 backedges. 0 proven. 33153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:22,041 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:22,042 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131] total 131 [2018-10-01 01:07:22,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states [2018-10-01 01:07:22,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2018-10-01 01:07:22,043 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:22,043 INFO L87 Difference]: Start difference. First operand 523 states and 523 transitions. Second operand 132 states. [2018-10-01 01:07:23,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:23,430 INFO L93 Difference]: Finished difference Result 529 states and 529 transitions. [2018-10-01 01:07:23,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2018-10-01 01:07:23,430 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 522 [2018-10-01 01:07:23,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:23,431 INFO L225 Difference]: With dead ends: 529 [2018-10-01 01:07:23,431 INFO L226 Difference]: Without dead ends: 527 [2018-10-01 01:07:23,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 522 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:07:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-10-01 01:07:23,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 527. [2018-10-01 01:07:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2018-10-01 01:07:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2018-10-01 01:07:23,434 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 522 [2018-10-01 01:07:23,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:23,434 INFO L480 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2018-10-01 01:07:23,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states. [2018-10-01 01:07:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2018-10-01 01:07:23,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-10-01 01:07:23,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:23,436 INFO L375 BasicCegarLoop]: trace histogram [130, 130, 130, 130, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:23,436 INFO L423 AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:23,436 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:23,436 INFO L82 PathProgramCache]: Analyzing trace with hash 73699296, now seen corresponding path program 130 times [2018-10-01 01:07:23,436 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:23,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:23,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:23,437 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:23,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 33670 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:24,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:24,441 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:24,449 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:07:24,550 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:07:24,551 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:24,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33670 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:25,520 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:25,521 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [132, 132] total 132 [2018-10-01 01:07:25,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 133 states [2018-10-01 01:07:25,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2018-10-01 01:07:25,522 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:25,522 INFO L87 Difference]: Start difference. First operand 527 states and 527 transitions. Second operand 133 states. [2018-10-01 01:07:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:27,797 INFO L93 Difference]: Finished difference Result 533 states and 533 transitions. [2018-10-01 01:07:27,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2018-10-01 01:07:27,797 INFO L78 Accepts]: Start accepts. Automaton has 133 states. Word has length 526 [2018-10-01 01:07:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:27,798 INFO L225 Difference]: With dead ends: 533 [2018-10-01 01:07:27,798 INFO L226 Difference]: Without dead ends: 531 [2018-10-01 01:07:27,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time [2018-10-01 01:07:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-01 01:07:27,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2018-10-01 01:07:27,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2018-10-01 01:07:27,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 531 transitions. [2018-10-01 01:07:27,801 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 531 transitions. Word has length 526 [2018-10-01 01:07:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:27,802 INFO L480 AbstractCegarLoop]: Abstraction has 531 states and 531 transitions. [2018-10-01 01:07:27,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 133 states. [2018-10-01 01:07:27,802 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 531 transitions. [2018-10-01 01:07:27,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-01 01:07:27,805 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:27,805 INFO L375 BasicCegarLoop]: trace histogram [131, 131, 131, 131, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:27,805 INFO L423 AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:27,805 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:27,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2813322, now seen corresponding path program 131 times [2018-10-01 01:07:27,805 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:27,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:27,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:27,806 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:27,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:27,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 34191 backedges. 0 proven. 34191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:29,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:29,307 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:29,314 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:07:29,597 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 132 check-sat command(s) [2018-10-01 01:07:29,597 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:29,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 34191 backedges. 0 proven. 34191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:30,566 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:30,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 133 [2018-10-01 01:07:30,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states [2018-10-01 01:07:30,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2018-10-01 01:07:30,568 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:30,568 INFO L87 Difference]: Start difference. First operand 531 states and 531 transitions. Second operand 134 states. [2018-10-01 01:07:32,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:32,655 INFO L93 Difference]: Finished difference Result 537 states and 537 transitions. [2018-10-01 01:07:32,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2018-10-01 01:07:32,655 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 530 [2018-10-01 01:07:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:32,656 INFO L225 Difference]: With dead ends: 537 [2018-10-01 01:07:32,656 INFO L226 Difference]: Without dead ends: 535 [2018-10-01 01:07:32,657 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:07:32,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2018-10-01 01:07:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2018-10-01 01:07:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2018-10-01 01:07:32,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 535 transitions. [2018-10-01 01:07:32,659 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 535 transitions. Word has length 530 [2018-10-01 01:07:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:32,660 INFO L480 AbstractCegarLoop]: Abstraction has 535 states and 535 transitions. [2018-10-01 01:07:32,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states. [2018-10-01 01:07:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 535 transitions. [2018-10-01 01:07:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2018-10-01 01:07:32,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:32,672 INFO L375 BasicCegarLoop]: trace histogram [132, 132, 132, 132, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:32,672 INFO L423 AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:32,672 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:32,672 INFO L82 PathProgramCache]: Analyzing trace with hash -791255500, now seen corresponding path program 132 times [2018-10-01 01:07:32,672 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:32,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:32,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:32,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:32,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:33,858 INFO L134 CoverageAnalysis]: Checked inductivity of 34716 backedges. 0 proven. 34716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:33,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:33,858 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:33,865 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:07:34,130 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 133 check-sat command(s) [2018-10-01 01:07:34,130 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:34,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 34716 backedges. 0 proven. 34716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:35,120 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:35,120 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [134, 134] total 134 [2018-10-01 01:07:35,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 135 states [2018-10-01 01:07:35,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 135 interpolants. [2018-10-01 01:07:35,122 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:35,122 INFO L87 Difference]: Start difference. First operand 535 states and 535 transitions. Second operand 135 states. [2018-10-01 01:07:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:37,324 INFO L93 Difference]: Finished difference Result 541 states and 541 transitions. [2018-10-01 01:07:37,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2018-10-01 01:07:37,324 INFO L78 Accepts]: Start accepts. Automaton has 135 states. Word has length 534 [2018-10-01 01:07:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:37,325 INFO L225 Difference]: With dead ends: 541 [2018-10-01 01:07:37,325 INFO L226 Difference]: Without dead ends: 539 [2018-10-01 01:07:37,325 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:07:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2018-10-01 01:07:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2018-10-01 01:07:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-10-01 01:07:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 539 transitions. [2018-10-01 01:07:37,329 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 539 transitions. Word has length 534 [2018-10-01 01:07:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:37,329 INFO L480 AbstractCegarLoop]: Abstraction has 539 states and 539 transitions. [2018-10-01 01:07:37,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 135 states. [2018-10-01 01:07:37,329 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 539 transitions. [2018-10-01 01:07:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2018-10-01 01:07:37,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:37,331 INFO L375 BasicCegarLoop]: trace histogram [133, 133, 133, 133, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:37,331 INFO L423 AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:37,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:37,331 INFO L82 PathProgramCache]: Analyzing trace with hash -127829538, now seen corresponding path program 133 times [2018-10-01 01:07:37,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:37,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:37,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:37,332 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:37,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 35245 backedges. 0 proven. 35245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:38,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:38,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:38,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:38,709 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 35245 backedges. 0 proven. 35245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:39,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:39,697 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [135, 135] total 135 [2018-10-01 01:07:39,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states [2018-10-01 01:07:39,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2018-10-01 01:07:39,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:39,698 INFO L87 Difference]: Start difference. First operand 539 states and 539 transitions. Second operand 136 states. [2018-10-01 01:07:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:41,279 INFO L93 Difference]: Finished difference Result 545 states and 545 transitions. [2018-10-01 01:07:41,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2018-10-01 01:07:41,280 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 538 [2018-10-01 01:07:41,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:41,280 INFO L225 Difference]: With dead ends: 545 [2018-10-01 01:07:41,281 INFO L226 Difference]: Without dead ends: 543 [2018-10-01 01:07:41,281 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:07:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-10-01 01:07:41,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2018-10-01 01:07:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-10-01 01:07:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 543 transitions. [2018-10-01 01:07:41,284 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 543 transitions. Word has length 538 [2018-10-01 01:07:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:41,284 INFO L480 AbstractCegarLoop]: Abstraction has 543 states and 543 transitions. [2018-10-01 01:07:41,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states. [2018-10-01 01:07:41,284 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 543 transitions. [2018-10-01 01:07:41,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 543 [2018-10-01 01:07:41,287 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:41,287 INFO L375 BasicCegarLoop]: trace histogram [134, 134, 134, 134, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:41,287 INFO L423 AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:41,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 2005313672, now seen corresponding path program 134 times [2018-10-01 01:07:41,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:41,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:41,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:41,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:07:41,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 35778 backedges. 0 proven. 35778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:42,326 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:42,326 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:42,335 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:07:42,435 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:07:42,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:42,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 35778 backedges. 0 proven. 35778 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:43,636 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:43,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [136, 136] total 136 [2018-10-01 01:07:43,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 137 states [2018-10-01 01:07:43,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2018-10-01 01:07:43,638 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:43,638 INFO L87 Difference]: Start difference. First operand 543 states and 543 transitions. Second operand 137 states. [2018-10-01 01:07:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:45,659 INFO L93 Difference]: Finished difference Result 549 states and 549 transitions. [2018-10-01 01:07:45,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2018-10-01 01:07:45,659 INFO L78 Accepts]: Start accepts. Automaton has 137 states. Word has length 542 [2018-10-01 01:07:45,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:45,660 INFO L225 Difference]: With dead ends: 549 [2018-10-01 01:07:45,660 INFO L226 Difference]: Without dead ends: 547 [2018-10-01 01:07:45,660 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:07:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2018-10-01 01:07:45,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2018-10-01 01:07:45,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2018-10-01 01:07:45,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 547 transitions. [2018-10-01 01:07:45,664 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 547 transitions. Word has length 542 [2018-10-01 01:07:45,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:45,664 INFO L480 AbstractCegarLoop]: Abstraction has 547 states and 547 transitions. [2018-10-01 01:07:45,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 137 states. [2018-10-01 01:07:45,664 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 547 transitions. [2018-10-01 01:07:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-10-01 01:07:45,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:45,666 INFO L375 BasicCegarLoop]: trace histogram [135, 135, 135, 135, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:45,666 INFO L423 AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:45,666 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:45,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1841328690, now seen corresponding path program 135 times [2018-10-01 01:07:45,667 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:45,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:45,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:45,667 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:45,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:45,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 36315 backedges. 0 proven. 36315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:46,729 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:46,729 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:46,736 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:07:47,032 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 136 check-sat command(s) [2018-10-01 01:07:47,032 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:47,040 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 36315 backedges. 0 proven. 36315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:48,039 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:48,039 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [137, 137] total 137 [2018-10-01 01:07:48,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states [2018-10-01 01:07:48,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2018-10-01 01:07:48,041 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:48,041 INFO L87 Difference]: Start difference. First operand 547 states and 547 transitions. Second operand 138 states. [2018-10-01 01:07:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:50,436 INFO L93 Difference]: Finished difference Result 553 states and 553 transitions. [2018-10-01 01:07:50,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2018-10-01 01:07:50,437 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 546 [2018-10-01 01:07:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:50,438 INFO L225 Difference]: With dead ends: 553 [2018-10-01 01:07:50,438 INFO L226 Difference]: Without dead ends: 551 [2018-10-01 01:07:50,438 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:07:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2018-10-01 01:07:50,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2018-10-01 01:07:50,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2018-10-01 01:07:50,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 551 transitions. [2018-10-01 01:07:50,443 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 551 transitions. Word has length 546 [2018-10-01 01:07:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:50,444 INFO L480 AbstractCegarLoop]: Abstraction has 551 states and 551 transitions. [2018-10-01 01:07:50,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states. [2018-10-01 01:07:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 551 transitions. [2018-10-01 01:07:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-10-01 01:07:50,447 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:50,447 INFO L375 BasicCegarLoop]: trace histogram [136, 136, 136, 136, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:50,447 INFO L423 AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:50,447 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:50,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1186375972, now seen corresponding path program 136 times [2018-10-01 01:07:50,447 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:50,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:50,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:50,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:50,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:50,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:51,675 INFO L134 CoverageAnalysis]: Checked inductivity of 36856 backedges. 0 proven. 36856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:51,675 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:51,675 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:51,683 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:07:51,793 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:07:51,794 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:51,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 36856 backedges. 0 proven. 36856 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:52,817 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:52,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [138, 138] total 138 [2018-10-01 01:07:52,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 139 states [2018-10-01 01:07:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2018-10-01 01:07:52,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:52,820 INFO L87 Difference]: Start difference. First operand 551 states and 551 transitions. Second operand 139 states. [2018-10-01 01:07:55,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:55,133 INFO L93 Difference]: Finished difference Result 557 states and 557 transitions. [2018-10-01 01:07:55,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2018-10-01 01:07:55,134 INFO L78 Accepts]: Start accepts. Automaton has 139 states. Word has length 550 [2018-10-01 01:07:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:55,134 INFO L225 Difference]: With dead ends: 557 [2018-10-01 01:07:55,134 INFO L226 Difference]: Without dead ends: 555 [2018-10-01 01:07:55,134 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:07:55,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2018-10-01 01:07:55,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2018-10-01 01:07:55,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2018-10-01 01:07:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 555 transitions. [2018-10-01 01:07:55,137 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 555 transitions. Word has length 550 [2018-10-01 01:07:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:55,138 INFO L480 AbstractCegarLoop]: Abstraction has 555 states and 555 transitions. [2018-10-01 01:07:55,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 139 states. [2018-10-01 01:07:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 555 transitions. [2018-10-01 01:07:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-10-01 01:07:55,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:55,140 INFO L375 BasicCegarLoop]: trace histogram [137, 137, 137, 137, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:55,141 INFO L423 AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:55,141 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:55,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1759783290, now seen corresponding path program 137 times [2018-10-01 01:07:55,141 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:55,141 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:55,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:55,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:55,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:07:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 37401 backedges. 0 proven. 37401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:56,223 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:07:56,224 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:07:56,230 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:07:56,544 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 138 check-sat command(s) [2018-10-01 01:07:56,544 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:07:56,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:07:57,548 INFO L134 CoverageAnalysis]: Checked inductivity of 37401 backedges. 0 proven. 37401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:07:57,570 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:07:57,571 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139] total 139 [2018-10-01 01:07:57,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states [2018-10-01 01:07:57,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2018-10-01 01:07:57,573 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:07:57,573 INFO L87 Difference]: Start difference. First operand 555 states and 555 transitions. Second operand 140 states. [2018-10-01 01:07:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:07:59,935 INFO L93 Difference]: Finished difference Result 561 states and 561 transitions. [2018-10-01 01:07:59,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-10-01 01:07:59,935 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 554 [2018-10-01 01:07:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:07:59,936 INFO L225 Difference]: With dead ends: 561 [2018-10-01 01:07:59,936 INFO L226 Difference]: Without dead ends: 559 [2018-10-01 01:07:59,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 554 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:07:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-10-01 01:07:59,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2018-10-01 01:07:59,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2018-10-01 01:07:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 559 transitions. [2018-10-01 01:07:59,939 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 559 transitions. Word has length 554 [2018-10-01 01:07:59,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:07:59,939 INFO L480 AbstractCegarLoop]: Abstraction has 559 states and 559 transitions. [2018-10-01 01:07:59,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states. [2018-10-01 01:07:59,939 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 559 transitions. [2018-10-01 01:07:59,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-10-01 01:07:59,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:07:59,941 INFO L375 BasicCegarLoop]: trace histogram [138, 138, 138, 138, 1, 1, 1, 1, 1, 1] [2018-10-01 01:07:59,942 INFO L423 AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:07:59,942 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:07:59,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1123184944, now seen corresponding path program 138 times [2018-10-01 01:07:59,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:07:59,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:07:59,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:07:59,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:07:59,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 37950 backedges. 0 proven. 37950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:01,021 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:01,021 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:01,027 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:01,319 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 139 check-sat command(s) [2018-10-01 01:08:01,319 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:01,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:02,325 INFO L134 CoverageAnalysis]: Checked inductivity of 37950 backedges. 0 proven. 37950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:02,346 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:02,346 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140] total 140 [2018-10-01 01:08:02,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 141 states [2018-10-01 01:08:02,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2018-10-01 01:08:02,348 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:02,348 INFO L87 Difference]: Start difference. First operand 559 states and 559 transitions. Second operand 141 states. [2018-10-01 01:08:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:04,645 INFO L93 Difference]: Finished difference Result 565 states and 565 transitions. [2018-10-01 01:08:04,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2018-10-01 01:08:04,646 INFO L78 Accepts]: Start accepts. Automaton has 141 states. Word has length 558 [2018-10-01 01:08:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:04,646 INFO L225 Difference]: With dead ends: 565 [2018-10-01 01:08:04,646 INFO L226 Difference]: Without dead ends: 563 [2018-10-01 01:08:04,647 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 697 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:08:04,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2018-10-01 01:08:04,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2018-10-01 01:08:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2018-10-01 01:08:04,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 563 transitions. [2018-10-01 01:08:04,650 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 563 transitions. Word has length 558 [2018-10-01 01:08:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:04,651 INFO L480 AbstractCegarLoop]: Abstraction has 563 states and 563 transitions. [2018-10-01 01:08:04,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has 141 states. [2018-10-01 01:08:04,651 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 563 transitions. [2018-10-01 01:08:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-10-01 01:08:04,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:04,653 INFO L375 BasicCegarLoop]: trace histogram [139, 139, 139, 139, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:04,653 INFO L423 AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:04,653 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1756911910, now seen corresponding path program 139 times [2018-10-01 01:08:04,654 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:04,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:04,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:04,654 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:04,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 38503 backedges. 0 proven. 38503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:05,751 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:05,752 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:05,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:05,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 38503 backedges. 0 proven. 38503 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:06,930 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:06,930 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [141, 141] total 141 [2018-10-01 01:08:06,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states [2018-10-01 01:08:06,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2018-10-01 01:08:06,932 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:06,932 INFO L87 Difference]: Start difference. First operand 563 states and 563 transitions. Second operand 142 states. [2018-10-01 01:08:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:09,322 INFO L93 Difference]: Finished difference Result 569 states and 569 transitions. [2018-10-01 01:08:09,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2018-10-01 01:08:09,322 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 562 [2018-10-01 01:08:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:09,323 INFO L225 Difference]: With dead ends: 569 [2018-10-01 01:08:09,323 INFO L226 Difference]: Without dead ends: 567 [2018-10-01 01:08:09,323 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:08:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2018-10-01 01:08:09,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2018-10-01 01:08:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2018-10-01 01:08:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 567 transitions. [2018-10-01 01:08:09,326 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 567 transitions. Word has length 562 [2018-10-01 01:08:09,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:09,326 INFO L480 AbstractCegarLoop]: Abstraction has 567 states and 567 transitions. [2018-10-01 01:08:09,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states. [2018-10-01 01:08:09,326 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 567 transitions. [2018-10-01 01:08:09,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2018-10-01 01:08:09,329 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:09,329 INFO L375 BasicCegarLoop]: trace histogram [140, 140, 140, 140, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:09,329 INFO L423 AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:09,329 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:09,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1386875004, now seen corresponding path program 140 times [2018-10-01 01:08:09,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:09,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:09,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:09,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:09,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 39060 backedges. 0 proven. 39060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:10,473 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:10,473 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:10,480 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:10,586 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:10,587 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:10,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 39060 backedges. 0 proven. 39060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:11,635 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:11,635 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [142, 142] total 142 [2018-10-01 01:08:11,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 143 states [2018-10-01 01:08:11,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2018-10-01 01:08:11,637 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:11,637 INFO L87 Difference]: Start difference. First operand 567 states and 567 transitions. Second operand 143 states. [2018-10-01 01:08:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:13,540 INFO L93 Difference]: Finished difference Result 573 states and 573 transitions. [2018-10-01 01:08:13,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2018-10-01 01:08:13,541 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 566 [2018-10-01 01:08:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:13,542 INFO L225 Difference]: With dead ends: 573 [2018-10-01 01:08:13,542 INFO L226 Difference]: Without dead ends: 571 [2018-10-01 01:08:13,542 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time [2018-10-01 01:08:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2018-10-01 01:08:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2018-10-01 01:08:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2018-10-01 01:08:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 571 transitions. [2018-10-01 01:08:13,545 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 571 transitions. Word has length 566 [2018-10-01 01:08:13,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:13,546 INFO L480 AbstractCegarLoop]: Abstraction has 571 states and 571 transitions. [2018-10-01 01:08:13,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 143 states. [2018-10-01 01:08:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 571 transitions. [2018-10-01 01:08:13,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2018-10-01 01:08:13,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:13,548 INFO L375 BasicCegarLoop]: trace histogram [141, 141, 141, 141, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:13,548 INFO L423 AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:13,548 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:13,548 INFO L82 PathProgramCache]: Analyzing trace with hash 2098717486, now seen corresponding path program 141 times [2018-10-01 01:08:13,548 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:13,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:13,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:13,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:13,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 39621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:14,886 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:14,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:14,893 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:15,226 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 142 check-sat command(s) [2018-10-01 01:08:15,226 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:15,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 39621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:16,307 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:16,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [143, 143] total 143 [2018-10-01 01:08:16,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states [2018-10-01 01:08:16,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2018-10-01 01:08:16,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:16,310 INFO L87 Difference]: Start difference. First operand 571 states and 571 transitions. Second operand 144 states. [2018-10-01 01:08:19,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:19,253 INFO L93 Difference]: Finished difference Result 577 states and 577 transitions. [2018-10-01 01:08:19,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2018-10-01 01:08:19,253 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 570 [2018-10-01 01:08:19,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:19,254 INFO L225 Difference]: With dead ends: 577 [2018-10-01 01:08:19,254 INFO L226 Difference]: Without dead ends: 575 [2018-10-01 01:08:19,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 570 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:08:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2018-10-01 01:08:19,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2018-10-01 01:08:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2018-10-01 01:08:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 575 transitions. [2018-10-01 01:08:19,261 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 575 transitions. Word has length 570 [2018-10-01 01:08:19,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:19,261 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 575 transitions. [2018-10-01 01:08:19,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states. [2018-10-01 01:08:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 575 transitions. [2018-10-01 01:08:19,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-10-01 01:08:19,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:19,263 INFO L375 BasicCegarLoop]: trace histogram [142, 142, 142, 142, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:19,264 INFO L423 AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:19,264 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:19,264 INFO L82 PathProgramCache]: Analyzing trace with hash 2101864920, now seen corresponding path program 142 times [2018-10-01 01:08:19,264 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:19,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:19,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:19,264 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:19,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 40186 backedges. 0 proven. 40186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:20,406 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:20,406 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:20,415 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:20,542 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:20,543 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:20,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 40186 backedges. 0 proven. 40186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:21,908 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:21,908 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [144, 144] total 144 [2018-10-01 01:08:21,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 145 states [2018-10-01 01:08:21,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2018-10-01 01:08:21,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:21,910 INFO L87 Difference]: Start difference. First operand 575 states and 575 transitions. Second operand 145 states. [2018-10-01 01:08:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:24,339 INFO L93 Difference]: Finished difference Result 581 states and 581 transitions. [2018-10-01 01:08:24,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-01 01:08:24,339 INFO L78 Accepts]: Start accepts. Automaton has 145 states. Word has length 574 [2018-10-01 01:08:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:24,340 INFO L225 Difference]: With dead ends: 581 [2018-10-01 01:08:24,340 INFO L226 Difference]: Without dead ends: 579 [2018-10-01 01:08:24,340 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 717 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:08:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2018-10-01 01:08:24,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2018-10-01 01:08:24,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2018-10-01 01:08:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 579 transitions. [2018-10-01 01:08:24,343 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 579 transitions. Word has length 574 [2018-10-01 01:08:24,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:24,343 INFO L480 AbstractCegarLoop]: Abstraction has 579 states and 579 transitions. [2018-10-01 01:08:24,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 145 states. [2018-10-01 01:08:24,343 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 579 transitions. [2018-10-01 01:08:24,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2018-10-01 01:08:24,345 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:24,346 INFO L375 BasicCegarLoop]: trace histogram [143, 143, 143, 143, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:24,346 INFO L423 AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:24,346 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:24,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1130400642, now seen corresponding path program 143 times [2018-10-01 01:08:24,346 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:24,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:24,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:24,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:24,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 40755 backedges. 0 proven. 40755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:25,505 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:25,506 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:25,512 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:25,845 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 144 check-sat command(s) [2018-10-01 01:08:25,845 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:25,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 40755 backedges. 0 proven. 40755 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:26,928 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:26,928 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [145, 145] total 145 [2018-10-01 01:08:26,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states [2018-10-01 01:08:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2018-10-01 01:08:26,930 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:26,930 INFO L87 Difference]: Start difference. First operand 579 states and 579 transitions. Second operand 146 states. [2018-10-01 01:08:29,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:29,954 INFO L93 Difference]: Finished difference Result 585 states and 585 transitions. [2018-10-01 01:08:29,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2018-10-01 01:08:29,955 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 578 [2018-10-01 01:08:29,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:29,956 INFO L225 Difference]: With dead ends: 585 [2018-10-01 01:08:29,956 INFO L226 Difference]: Without dead ends: 583 [2018-10-01 01:08:29,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:08:29,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2018-10-01 01:08:29,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 583. [2018-10-01 01:08:29,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2018-10-01 01:08:29,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 583 transitions. [2018-10-01 01:08:29,959 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 583 transitions. Word has length 578 [2018-10-01 01:08:29,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:29,959 INFO L480 AbstractCegarLoop]: Abstraction has 583 states and 583 transitions. [2018-10-01 01:08:29,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states. [2018-10-01 01:08:29,959 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 583 transitions. [2018-10-01 01:08:29,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-10-01 01:08:29,961 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:29,961 INFO L375 BasicCegarLoop]: trace histogram [144, 144, 144, 144, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:29,962 INFO L423 AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:29,962 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash 597444652, now seen corresponding path program 144 times [2018-10-01 01:08:29,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:29,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:29,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:29,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:29,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 41328 backedges. 0 proven. 41328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:31,098 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:31,098 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:31,107 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:08:31,414 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 145 check-sat command(s) [2018-10-01 01:08:31,414 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:31,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 41328 backedges. 0 proven. 41328 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:32,529 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:32,529 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [146, 146] total 146 [2018-10-01 01:08:32,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 147 states [2018-10-01 01:08:32,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 147 interpolants. [2018-10-01 01:08:32,531 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:32,531 INFO L87 Difference]: Start difference. First operand 583 states and 583 transitions. Second operand 147 states. [2018-10-01 01:08:34,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:34,569 INFO L93 Difference]: Finished difference Result 589 states and 589 transitions. [2018-10-01 01:08:34,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2018-10-01 01:08:34,569 INFO L78 Accepts]: Start accepts. Automaton has 147 states. Word has length 582 [2018-10-01 01:08:34,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:34,570 INFO L225 Difference]: With dead ends: 589 [2018-10-01 01:08:34,570 INFO L226 Difference]: Without dead ends: 587 [2018-10-01 01:08:34,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:08:34,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2018-10-01 01:08:34,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2018-10-01 01:08:34,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2018-10-01 01:08:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 587 transitions. [2018-10-01 01:08:34,575 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 587 transitions. Word has length 582 [2018-10-01 01:08:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:34,575 INFO L480 AbstractCegarLoop]: Abstraction has 587 states and 587 transitions. [2018-10-01 01:08:34,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 147 states. [2018-10-01 01:08:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 587 transitions. [2018-10-01 01:08:34,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2018-10-01 01:08:34,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:34,579 INFO L375 BasicCegarLoop]: trace histogram [145, 145, 145, 145, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:34,579 INFO L423 AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:34,579 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:34,579 INFO L82 PathProgramCache]: Analyzing trace with hash -789209130, now seen corresponding path program 145 times [2018-10-01 01:08:34,579 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:34,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:34,580 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:34,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:35,789 INFO L134 CoverageAnalysis]: Checked inductivity of 41905 backedges. 0 proven. 41905 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:35,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:35,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:35,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:35,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 41905 backedges. 0 proven. 41905 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:37,009 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:37,010 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [147, 147] total 147 [2018-10-01 01:08:37,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states [2018-10-01 01:08:37,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2018-10-01 01:08:37,012 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:37,012 INFO L87 Difference]: Start difference. First operand 587 states and 587 transitions. Second operand 148 states. [2018-10-01 01:08:38,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:38,843 INFO L93 Difference]: Finished difference Result 593 states and 593 transitions. [2018-10-01 01:08:38,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-01 01:08:38,843 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 586 [2018-10-01 01:08:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:38,844 INFO L225 Difference]: With dead ends: 593 [2018-10-01 01:08:38,844 INFO L226 Difference]: Without dead ends: 591 [2018-10-01 01:08:38,845 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:08:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2018-10-01 01:08:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2018-10-01 01:08:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 591 states. [2018-10-01 01:08:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 591 transitions. [2018-10-01 01:08:38,848 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 591 transitions. Word has length 586 [2018-10-01 01:08:38,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:38,848 INFO L480 AbstractCegarLoop]: Abstraction has 591 states and 591 transitions. [2018-10-01 01:08:38,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states. [2018-10-01 01:08:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 591 transitions. [2018-10-01 01:08:38,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 591 [2018-10-01 01:08:38,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:38,852 INFO L375 BasicCegarLoop]: trace histogram [146, 146, 146, 146, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:38,852 INFO L423 AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:38,852 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -47771008, now seen corresponding path program 146 times [2018-10-01 01:08:38,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:38,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:38,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:08:38,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:38,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 42486 backedges. 0 proven. 42486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:40,226 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:40,226 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:40,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:08:40,343 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:08:40,344 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:40,350 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 42486 backedges. 0 proven. 42486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:41,503 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:41,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [148, 148] total 148 [2018-10-01 01:08:41,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 149 states [2018-10-01 01:08:41,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2018-10-01 01:08:41,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:41,505 INFO L87 Difference]: Start difference. First operand 591 states and 591 transitions. Second operand 149 states. [2018-10-01 01:08:43,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:43,804 INFO L93 Difference]: Finished difference Result 597 states and 597 transitions. [2018-10-01 01:08:43,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2018-10-01 01:08:43,804 INFO L78 Accepts]: Start accepts. Automaton has 149 states. Word has length 590 [2018-10-01 01:08:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:43,805 INFO L225 Difference]: With dead ends: 597 [2018-10-01 01:08:43,805 INFO L226 Difference]: Without dead ends: 595 [2018-10-01 01:08:43,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 590 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:08:43,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2018-10-01 01:08:43,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2018-10-01 01:08:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2018-10-01 01:08:43,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 595 transitions. [2018-10-01 01:08:43,808 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 595 transitions. Word has length 590 [2018-10-01 01:08:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:43,808 INFO L480 AbstractCegarLoop]: Abstraction has 595 states and 595 transitions. [2018-10-01 01:08:43,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 149 states. [2018-10-01 01:08:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 595 transitions. [2018-10-01 01:08:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-10-01 01:08:43,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:43,811 INFO L375 BasicCegarLoop]: trace histogram [147, 147, 147, 147, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:43,811 INFO L423 AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:43,811 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -123002838, now seen corresponding path program 147 times [2018-10-01 01:08:43,811 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:43,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:43,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:43,812 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:43,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 43071 backedges. 0 proven. 43071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:45,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:45,225 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:45,232 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:08:45,586 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 148 check-sat command(s) [2018-10-01 01:08:45,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:45,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 43071 backedges. 0 proven. 43071 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:46,696 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:46,696 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [149, 149] total 149 [2018-10-01 01:08:46,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states [2018-10-01 01:08:46,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants. [2018-10-01 01:08:46,698 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:46,698 INFO L87 Difference]: Start difference. First operand 595 states and 595 transitions. Second operand 150 states. [2018-10-01 01:08:48,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:48,921 INFO L93 Difference]: Finished difference Result 601 states and 601 transitions. [2018-10-01 01:08:48,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2018-10-01 01:08:48,921 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 594 [2018-10-01 01:08:48,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:48,922 INFO L225 Difference]: With dead ends: 601 [2018-10-01 01:08:48,922 INFO L226 Difference]: Without dead ends: 599 [2018-10-01 01:08:48,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 594 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:08:48,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2018-10-01 01:08:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2018-10-01 01:08:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2018-10-01 01:08:48,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 599 transitions. [2018-10-01 01:08:48,925 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 599 transitions. Word has length 594 [2018-10-01 01:08:48,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:48,926 INFO L480 AbstractCegarLoop]: Abstraction has 599 states and 599 transitions. [2018-10-01 01:08:48,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states. [2018-10-01 01:08:48,926 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 599 transitions. [2018-10-01 01:08:48,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-10-01 01:08:48,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:48,928 INFO L375 BasicCegarLoop]: trace histogram [148, 148, 148, 148, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:48,928 INFO L423 AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:48,928 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1388071124, now seen corresponding path program 148 times [2018-10-01 01:08:48,929 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:48,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:48,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:48,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:48,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 43660 backedges. 0 proven. 43660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:50,365 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:50,365 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:50,374 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:08:50,498 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:08:50,498 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:50,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 43660 backedges. 0 proven. 43660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:51,619 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:51,620 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [150, 150] total 150 [2018-10-01 01:08:51,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 151 states [2018-10-01 01:08:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2018-10-01 01:08:51,622 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:51,623 INFO L87 Difference]: Start difference. First operand 599 states and 599 transitions. Second operand 151 states. [2018-10-01 01:08:53,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:53,366 INFO L93 Difference]: Finished difference Result 605 states and 605 transitions. [2018-10-01 01:08:53,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2018-10-01 01:08:53,366 INFO L78 Accepts]: Start accepts. Automaton has 151 states. Word has length 598 [2018-10-01 01:08:53,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:53,367 INFO L225 Difference]: With dead ends: 605 [2018-10-01 01:08:53,367 INFO L226 Difference]: Without dead ends: 603 [2018-10-01 01:08:53,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:08:53,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2018-10-01 01:08:53,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2018-10-01 01:08:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2018-10-01 01:08:53,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 603 transitions. [2018-10-01 01:08:53,370 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 603 transitions. Word has length 598 [2018-10-01 01:08:53,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:53,371 INFO L480 AbstractCegarLoop]: Abstraction has 603 states and 603 transitions. [2018-10-01 01:08:53,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has 151 states. [2018-10-01 01:08:53,371 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 603 transitions. [2018-10-01 01:08:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2018-10-01 01:08:53,374 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:53,375 INFO L375 BasicCegarLoop]: trace histogram [149, 149, 149, 149, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:53,375 INFO L423 AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:53,375 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:53,375 INFO L82 PathProgramCache]: Analyzing trace with hash 2035616894, now seen corresponding path program 149 times [2018-10-01 01:08:53,375 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:53,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:53,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:53,376 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:53,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:08:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 44253 backedges. 0 proven. 44253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:54,633 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:08:54,633 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:08:54,639 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:08:55,020 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 150 check-sat command(s) [2018-10-01 01:08:55,020 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:08:55,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:08:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 44253 backedges. 0 proven. 44253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:08:56,154 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:08:56,154 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [151, 151] total 151 [2018-10-01 01:08:56,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states [2018-10-01 01:08:56,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2018-10-01 01:08:56,156 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:08:56,156 INFO L87 Difference]: Start difference. First operand 603 states and 603 transitions. Second operand 152 states. [2018-10-01 01:08:59,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:08:59,136 INFO L93 Difference]: Finished difference Result 609 states and 609 transitions. [2018-10-01 01:08:59,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2018-10-01 01:08:59,136 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 602 [2018-10-01 01:08:59,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:08:59,137 INFO L225 Difference]: With dead ends: 609 [2018-10-01 01:08:59,137 INFO L226 Difference]: Without dead ends: 607 [2018-10-01 01:08:59,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time [2018-10-01 01:08:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2018-10-01 01:08:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2018-10-01 01:08:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2018-10-01 01:08:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 607 transitions. [2018-10-01 01:08:59,140 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 607 transitions. Word has length 602 [2018-10-01 01:08:59,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:08:59,141 INFO L480 AbstractCegarLoop]: Abstraction has 607 states and 607 transitions. [2018-10-01 01:08:59,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states. [2018-10-01 01:08:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 607 transitions. [2018-10-01 01:08:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2018-10-01 01:08:59,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:08:59,143 INFO L375 BasicCegarLoop]: trace histogram [150, 150, 150, 150, 1, 1, 1, 1, 1, 1] [2018-10-01 01:08:59,143 INFO L423 AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:08:59,144 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:08:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1496312616, now seen corresponding path program 150 times [2018-10-01 01:08:59,144 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:08:59,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:08:59,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,144 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:08:59,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:08:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 44850 backedges. 0 proven. 44850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:00,611 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:00,611 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:00,618 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:00,949 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 151 check-sat command(s) [2018-10-01 01:09:00,949 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:00,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 44850 backedges. 0 proven. 44850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:02,151 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:02,151 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152] total 152 [2018-10-01 01:09:02,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 153 states [2018-10-01 01:09:02,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 153 interpolants. [2018-10-01 01:09:02,153 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:02,153 INFO L87 Difference]: Start difference. First operand 607 states and 607 transitions. Second operand 153 states. [2018-10-01 01:09:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:05,353 INFO L93 Difference]: Finished difference Result 613 states and 613 transitions. [2018-10-01 01:09:05,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2018-10-01 01:09:05,353 INFO L78 Accepts]: Start accepts. Automaton has 153 states. Word has length 606 [2018-10-01 01:09:05,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:05,354 INFO L225 Difference]: With dead ends: 613 [2018-10-01 01:09:05,354 INFO L226 Difference]: Without dead ends: 611 [2018-10-01 01:09:05,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:09:05,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2018-10-01 01:09:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2018-10-01 01:09:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2018-10-01 01:09:05,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 611 transitions. [2018-10-01 01:09:05,358 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 611 transitions. Word has length 606 [2018-10-01 01:09:05,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:05,358 INFO L480 AbstractCegarLoop]: Abstraction has 611 states and 611 transitions. [2018-10-01 01:09:05,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has 153 states. [2018-10-01 01:09:05,358 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 611 transitions. [2018-10-01 01:09:05,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-10-01 01:09:05,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:05,361 INFO L375 BasicCegarLoop]: trace histogram [151, 151, 151, 151, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:05,361 INFO L423 AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:05,361 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:05,361 INFO L82 PathProgramCache]: Analyzing trace with hash -37264174, now seen corresponding path program 151 times [2018-10-01 01:09:05,361 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:05,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:05,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:05,362 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:05,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45451 backedges. 0 proven. 45451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:06,655 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:06,655 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:06,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:06,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:07,918 INFO L134 CoverageAnalysis]: Checked inductivity of 45451 backedges. 0 proven. 45451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:07,939 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:07,939 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [153, 153] total 153 [2018-10-01 01:09:07,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states [2018-10-01 01:09:07,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2018-10-01 01:09:07,941 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:07,941 INFO L87 Difference]: Start difference. First operand 611 states and 611 transitions. Second operand 154 states. [2018-10-01 01:09:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:09,904 INFO L93 Difference]: Finished difference Result 617 states and 617 transitions. [2018-10-01 01:09:09,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2018-10-01 01:09:09,905 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 610 [2018-10-01 01:09:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:09,905 INFO L225 Difference]: With dead ends: 617 [2018-10-01 01:09:09,905 INFO L226 Difference]: Without dead ends: 615 [2018-10-01 01:09:09,906 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:09:09,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2018-10-01 01:09:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2018-10-01 01:09:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2018-10-01 01:09:09,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 615 transitions. [2018-10-01 01:09:09,910 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 615 transitions. Word has length 610 [2018-10-01 01:09:09,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:09,911 INFO L480 AbstractCegarLoop]: Abstraction has 615 states and 615 transitions. [2018-10-01 01:09:09,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states. [2018-10-01 01:09:09,911 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 615 transitions. [2018-10-01 01:09:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-10-01 01:09:09,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:09,915 INFO L375 BasicCegarLoop]: trace histogram [152, 152, 152, 152, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:09,915 INFO L423 AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:09,915 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:09,915 INFO L82 PathProgramCache]: Analyzing trace with hash 827718012, now seen corresponding path program 152 times [2018-10-01 01:09:09,915 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:09,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:09,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:09,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:09,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:10,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 46056 backedges. 0 proven. 46056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:11,384 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:11,384 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:11,391 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:11,506 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:11,506 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:11,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 46056 backedges. 0 proven. 46056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:12,711 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:12,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [154, 154] total 154 [2018-10-01 01:09:12,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 155 states [2018-10-01 01:09:12,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2018-10-01 01:09:12,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:12,714 INFO L87 Difference]: Start difference. First operand 615 states and 615 transitions. Second operand 155 states. [2018-10-01 01:09:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:16,012 INFO L93 Difference]: Finished difference Result 621 states and 621 transitions. [2018-10-01 01:09:16,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2018-10-01 01:09:16,013 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 614 [2018-10-01 01:09:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:16,013 INFO L225 Difference]: With dead ends: 621 [2018-10-01 01:09:16,014 INFO L226 Difference]: Without dead ends: 619 [2018-10-01 01:09:16,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:09:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2018-10-01 01:09:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2018-10-01 01:09:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2018-10-01 01:09:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 619 transitions. [2018-10-01 01:09:16,017 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 619 transitions. Word has length 614 [2018-10-01 01:09:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:16,017 INFO L480 AbstractCegarLoop]: Abstraction has 619 states and 619 transitions. [2018-10-01 01:09:16,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 155 states. [2018-10-01 01:09:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 619 transitions. [2018-10-01 01:09:16,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2018-10-01 01:09:16,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:16,020 INFO L375 BasicCegarLoop]: trace histogram [153, 153, 153, 153, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:16,020 INFO L423 AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:16,020 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:16,020 INFO L82 PathProgramCache]: Analyzing trace with hash 483797286, now seen corresponding path program 153 times [2018-10-01 01:09:16,020 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:16,020 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:16,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:16,021 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:16,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:16,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 46665 backedges. 0 proven. 46665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:17,359 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:17,359 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:17,366 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:17,743 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 154 check-sat command(s) [2018-10-01 01:09:17,743 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:17,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 46665 backedges. 0 proven. 46665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:18,883 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:18,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [155, 155] total 155 [2018-10-01 01:09:18,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states [2018-10-01 01:09:18,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants. [2018-10-01 01:09:18,886 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:18,886 INFO L87 Difference]: Start difference. First operand 619 states and 619 transitions. Second operand 156 states. [2018-10-01 01:09:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:21,259 INFO L93 Difference]: Finished difference Result 625 states and 625 transitions. [2018-10-01 01:09:21,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2018-10-01 01:09:21,259 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 618 [2018-10-01 01:09:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:21,260 INFO L225 Difference]: With dead ends: 625 [2018-10-01 01:09:21,260 INFO L226 Difference]: Without dead ends: 623 [2018-10-01 01:09:21,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 618 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:09:21,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2018-10-01 01:09:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2018-10-01 01:09:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2018-10-01 01:09:21,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 623 transitions. [2018-10-01 01:09:21,264 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 623 transitions. Word has length 618 [2018-10-01 01:09:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:21,264 INFO L480 AbstractCegarLoop]: Abstraction has 623 states and 623 transitions. [2018-10-01 01:09:21,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states. [2018-10-01 01:09:21,264 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 623 transitions. [2018-10-01 01:09:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2018-10-01 01:09:21,267 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:21,267 INFO L375 BasicCegarLoop]: trace histogram [154, 154, 154, 154, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:21,267 INFO L423 AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:21,267 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:21,267 INFO L82 PathProgramCache]: Analyzing trace with hash -402492464, now seen corresponding path program 154 times [2018-10-01 01:09:21,267 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:21,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:21,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:21,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 47278 backedges. 0 proven. 47278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:22,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:22,592 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:22,599 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:22,730 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:22,731 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:22,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 47278 backedges. 0 proven. 47278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:23,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:23,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [156, 156] total 156 [2018-10-01 01:09:23,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 157 states [2018-10-01 01:09:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 157 interpolants. [2018-10-01 01:09:23,963 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:23,964 INFO L87 Difference]: Start difference. First operand 623 states and 623 transitions. Second operand 157 states. [2018-10-01 01:09:26,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:26,710 INFO L93 Difference]: Finished difference Result 629 states and 629 transitions. [2018-10-01 01:09:26,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2018-10-01 01:09:26,710 INFO L78 Accepts]: Start accepts. Automaton has 157 states. Word has length 622 [2018-10-01 01:09:26,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:26,711 INFO L225 Difference]: With dead ends: 629 [2018-10-01 01:09:26,711 INFO L226 Difference]: Without dead ends: 627 [2018-10-01 01:09:26,712 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 777 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time [2018-10-01 01:09:26,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2018-10-01 01:09:26,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2018-10-01 01:09:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2018-10-01 01:09:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 627 transitions. [2018-10-01 01:09:26,715 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 627 transitions. Word has length 622 [2018-10-01 01:09:26,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:26,715 INFO L480 AbstractCegarLoop]: Abstraction has 627 states and 627 transitions. [2018-10-01 01:09:26,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 157 states. [2018-10-01 01:09:26,715 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 627 transitions. [2018-10-01 01:09:26,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-10-01 01:09:26,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:26,718 INFO L375 BasicCegarLoop]: trace histogram [155, 155, 155, 155, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:26,718 INFO L423 AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:26,718 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:26,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1498765690, now seen corresponding path program 155 times [2018-10-01 01:09:26,718 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:26,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:26,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:26,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:26,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:28,080 INFO L134 CoverageAnalysis]: Checked inductivity of 47895 backedges. 0 proven. 47895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:28,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:28,080 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:28,088 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:09:28,477 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 156 check-sat command(s) [2018-10-01 01:09:28,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:28,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:29,715 INFO L134 CoverageAnalysis]: Checked inductivity of 47895 backedges. 0 proven. 47895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:29,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:29,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [157, 157] total 157 [2018-10-01 01:09:29,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states [2018-10-01 01:09:29,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2018-10-01 01:09:29,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:29,738 INFO L87 Difference]: Start difference. First operand 627 states and 627 transitions. Second operand 158 states. [2018-10-01 01:09:33,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:33,429 INFO L93 Difference]: Finished difference Result 633 states and 633 transitions. [2018-10-01 01:09:33,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2018-10-01 01:09:33,430 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 626 [2018-10-01 01:09:33,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:33,430 INFO L225 Difference]: With dead ends: 633 [2018-10-01 01:09:33,431 INFO L226 Difference]: Without dead ends: 631 [2018-10-01 01:09:33,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 626 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:09:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2018-10-01 01:09:33,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 631. [2018-10-01 01:09:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2018-10-01 01:09:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 631 transitions. [2018-10-01 01:09:33,434 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 631 transitions. Word has length 626 [2018-10-01 01:09:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:33,434 INFO L480 AbstractCegarLoop]: Abstraction has 631 states and 631 transitions. [2018-10-01 01:09:33,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states. [2018-10-01 01:09:33,434 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 631 transitions. [2018-10-01 01:09:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2018-10-01 01:09:33,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:33,437 INFO L375 BasicCegarLoop]: trace histogram [156, 156, 156, 156, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:33,437 INFO L423 AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:33,437 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1980324388, now seen corresponding path program 156 times [2018-10-01 01:09:33,438 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:33,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:33,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,438 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:33,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:33,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 48516 backedges. 0 proven. 48516 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:34,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:34,782 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:34,790 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:09:35,142 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 157 check-sat command(s) [2018-10-01 01:09:35,142 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:35,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 48516 backedges. 0 proven. 48516 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:36,606 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:36,607 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [158, 158] total 158 [2018-10-01 01:09:36,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 159 states [2018-10-01 01:09:36,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 159 interpolants. [2018-10-01 01:09:36,609 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:36,609 INFO L87 Difference]: Start difference. First operand 631 states and 631 transitions. Second operand 159 states. [2018-10-01 01:09:40,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:40,010 INFO L93 Difference]: Finished difference Result 637 states and 637 transitions. [2018-10-01 01:09:40,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2018-10-01 01:09:40,011 INFO L78 Accepts]: Start accepts. Automaton has 159 states. Word has length 630 [2018-10-01 01:09:40,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:40,012 INFO L225 Difference]: With dead ends: 637 [2018-10-01 01:09:40,012 INFO L226 Difference]: Without dead ends: 635 [2018-10-01 01:09:40,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 630 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:09:40,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2018-10-01 01:09:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2018-10-01 01:09:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2018-10-01 01:09:40,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 635 transitions. [2018-10-01 01:09:40,015 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 635 transitions. Word has length 630 [2018-10-01 01:09:40,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:40,015 INFO L480 AbstractCegarLoop]: Abstraction has 635 states and 635 transitions. [2018-10-01 01:09:40,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 159 states. [2018-10-01 01:09:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 635 transitions. [2018-10-01 01:09:40,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-10-01 01:09:40,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:40,018 INFO L375 BasicCegarLoop]: trace histogram [157, 157, 157, 157, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:40,018 INFO L423 AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:40,018 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:40,018 INFO L82 PathProgramCache]: Analyzing trace with hash 572061134, now seen corresponding path program 157 times [2018-10-01 01:09:40,018 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:40,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:40,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:40,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 49141 backedges. 0 proven. 49141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:41,594 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:41,594 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:41,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:41,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:42,947 INFO L134 CoverageAnalysis]: Checked inductivity of 49141 backedges. 0 proven. 49141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:42,969 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:42,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [159, 159] total 159 [2018-10-01 01:09:42,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states [2018-10-01 01:09:42,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants. [2018-10-01 01:09:42,971 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:42,971 INFO L87 Difference]: Start difference. First operand 635 states and 635 transitions. Second operand 160 states. [2018-10-01 01:09:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:46,332 INFO L93 Difference]: Finished difference Result 641 states and 641 transitions. [2018-10-01 01:09:46,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2018-10-01 01:09:46,333 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 634 [2018-10-01 01:09:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:46,333 INFO L225 Difference]: With dead ends: 641 [2018-10-01 01:09:46,334 INFO L226 Difference]: Without dead ends: 639 [2018-10-01 01:09:46,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:09:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2018-10-01 01:09:46,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 639. [2018-10-01 01:09:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2018-10-01 01:09:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 639 transitions. [2018-10-01 01:09:46,337 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 639 transitions. Word has length 634 [2018-10-01 01:09:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:46,338 INFO L480 AbstractCegarLoop]: Abstraction has 639 states and 639 transitions. [2018-10-01 01:09:46,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states. [2018-10-01 01:09:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 639 transitions. [2018-10-01 01:09:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2018-10-01 01:09:46,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:46,341 INFO L375 BasicCegarLoop]: trace histogram [158, 158, 158, 158, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:46,341 INFO L423 AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:46,341 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:46,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1069634440, now seen corresponding path program 158 times [2018-10-01 01:09:46,341 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:46,341 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:46,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:46,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:09:46,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 49770 backedges. 0 proven. 49770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:47,717 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:47,717 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:47,724 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:09:47,847 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:09:47,848 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:47,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 49770 backedges. 0 proven. 49770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:49,058 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:49,058 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [160, 160] total 160 [2018-10-01 01:09:49,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 161 states [2018-10-01 01:09:49,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2018-10-01 01:09:49,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:49,060 INFO L87 Difference]: Start difference. First operand 639 states and 639 transitions. Second operand 161 states. [2018-10-01 01:09:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:51,957 INFO L93 Difference]: Finished difference Result 645 states and 645 transitions. [2018-10-01 01:09:51,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2018-10-01 01:09:51,957 INFO L78 Accepts]: Start accepts. Automaton has 161 states. Word has length 638 [2018-10-01 01:09:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:51,958 INFO L225 Difference]: With dead ends: 645 [2018-10-01 01:09:51,958 INFO L226 Difference]: Without dead ends: 643 [2018-10-01 01:09:51,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 638 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:09:51,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-10-01 01:09:51,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2018-10-01 01:09:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2018-10-01 01:09:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 643 transitions. [2018-10-01 01:09:51,963 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 643 transitions. Word has length 638 [2018-10-01 01:09:51,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:51,963 INFO L480 AbstractCegarLoop]: Abstraction has 643 states and 643 transitions. [2018-10-01 01:09:51,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 161 states. [2018-10-01 01:09:51,964 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 643 transitions. [2018-10-01 01:09:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2018-10-01 01:09:51,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:51,967 INFO L375 BasicCegarLoop]: trace histogram [159, 159, 159, 159, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:51,968 INFO L423 AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:51,968 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:51,968 INFO L82 PathProgramCache]: Analyzing trace with hash -772473310, now seen corresponding path program 159 times [2018-10-01 01:09:51,968 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:51,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:51,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:51,969 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:51,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 50403 backedges. 0 proven. 50403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:53,383 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:53,383 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:53,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:09:53,810 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 160 check-sat command(s) [2018-10-01 01:09:53,810 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:53,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 50403 backedges. 0 proven. 50403 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:55,033 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:55,033 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161] total 161 [2018-10-01 01:09:55,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states [2018-10-01 01:09:55,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants. [2018-10-01 01:09:55,035 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:55,035 INFO L87 Difference]: Start difference. First operand 643 states and 643 transitions. Second operand 162 states. [2018-10-01 01:09:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:09:56,985 INFO L93 Difference]: Finished difference Result 649 states and 649 transitions. [2018-10-01 01:09:56,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2018-10-01 01:09:56,985 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 642 [2018-10-01 01:09:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:09:56,986 INFO L225 Difference]: With dead ends: 649 [2018-10-01 01:09:56,986 INFO L226 Difference]: Without dead ends: 647 [2018-10-01 01:09:56,987 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 642 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:09:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2018-10-01 01:09:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2018-10-01 01:09:56,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 647 states. [2018-10-01 01:09:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 647 transitions. [2018-10-01 01:09:56,989 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 647 transitions. Word has length 642 [2018-10-01 01:09:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:09:56,990 INFO L480 AbstractCegarLoop]: Abstraction has 647 states and 647 transitions. [2018-10-01 01:09:56,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states. [2018-10-01 01:09:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 647 transitions. [2018-10-01 01:09:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-10-01 01:09:56,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:09:56,992 INFO L375 BasicCegarLoop]: trace histogram [160, 160, 160, 160, 1, 1, 1, 1, 1, 1] [2018-10-01 01:09:56,993 INFO L423 AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:09:56,993 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:09:56,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1753847092, now seen corresponding path program 160 times [2018-10-01 01:09:56,993 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:09:56,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:09:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:56,993 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:09:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:09:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:09:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 51040 backedges. 0 proven. 51040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:58,378 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:09:58,378 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:09:58,385 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:09:58,521 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:09:58,522 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:09:58,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:09:59,750 INFO L134 CoverageAnalysis]: Checked inductivity of 51040 backedges. 0 proven. 51040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:09:59,771 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:09:59,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [162, 162] total 162 [2018-10-01 01:09:59,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 163 states [2018-10-01 01:09:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2018-10-01 01:09:59,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:09:59,773 INFO L87 Difference]: Start difference. First operand 647 states and 647 transitions. Second operand 163 states. [2018-10-01 01:10:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:04,266 INFO L93 Difference]: Finished difference Result 653 states and 653 transitions. [2018-10-01 01:10:04,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2018-10-01 01:10:04,266 INFO L78 Accepts]: Start accepts. Automaton has 163 states. Word has length 646 [2018-10-01 01:10:04,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:04,267 INFO L225 Difference]: With dead ends: 653 [2018-10-01 01:10:04,267 INFO L226 Difference]: Without dead ends: 651 [2018-10-01 01:10:04,268 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 646 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s Time [2018-10-01 01:10:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2018-10-01 01:10:04,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2018-10-01 01:10:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2018-10-01 01:10:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 651 transitions. [2018-10-01 01:10:04,271 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 651 transitions. Word has length 646 [2018-10-01 01:10:04,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:04,271 INFO L480 AbstractCegarLoop]: Abstraction has 651 states and 651 transitions. [2018-10-01 01:10:04,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 163 states. [2018-10-01 01:10:04,271 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 651 transitions. [2018-10-01 01:10:04,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2018-10-01 01:10:04,274 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:04,274 INFO L375 BasicCegarLoop]: trace histogram [161, 161, 161, 161, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:04,274 INFO L423 AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:04,274 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:04,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1346538890, now seen corresponding path program 161 times [2018-10-01 01:10:04,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:04,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:04,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:04,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:04,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 51681 backedges. 0 proven. 51681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:05,715 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:05,715 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:05,722 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:06,128 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 162 check-sat command(s) [2018-10-01 01:10:06,129 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:06,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 51681 backedges. 0 proven. 51681 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:07,683 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:07,684 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [163, 163] total 163 [2018-10-01 01:10:07,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states [2018-10-01 01:10:07,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2018-10-01 01:10:07,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:07,686 INFO L87 Difference]: Start difference. First operand 651 states and 651 transitions. Second operand 164 states. [2018-10-01 01:10:10,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:10,938 INFO L93 Difference]: Finished difference Result 657 states and 657 transitions. [2018-10-01 01:10:10,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2018-10-01 01:10:10,938 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 650 [2018-10-01 01:10:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:10,939 INFO L225 Difference]: With dead ends: 657 [2018-10-01 01:10:10,939 INFO L226 Difference]: Without dead ends: 655 [2018-10-01 01:10:10,940 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 650 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:10:10,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2018-10-01 01:10:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2018-10-01 01:10:10,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2018-10-01 01:10:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 655 transitions. [2018-10-01 01:10:10,943 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 655 transitions. Word has length 650 [2018-10-01 01:10:10,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:10,943 INFO L480 AbstractCegarLoop]: Abstraction has 655 states and 655 transitions. [2018-10-01 01:10:10,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states. [2018-10-01 01:10:10,943 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 655 transitions. [2018-10-01 01:10:10,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 655 [2018-10-01 01:10:10,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:10,946 INFO L375 BasicCegarLoop]: trace histogram [162, 162, 162, 162, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:10,946 INFO L423 AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:10,947 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:10,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1199270624, now seen corresponding path program 162 times [2018-10-01 01:10:10,947 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:10,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:10,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:10,947 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:10,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 52326 backedges. 0 proven. 52326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:12,603 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:12,603 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:12,610 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:12,981 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 163 check-sat command(s) [2018-10-01 01:10:12,982 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:12,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 52326 backedges. 0 proven. 52326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:14,254 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:14,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [164, 164] total 164 [2018-10-01 01:10:14,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 165 states [2018-10-01 01:10:14,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 165 interpolants. [2018-10-01 01:10:14,257 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:14,257 INFO L87 Difference]: Start difference. First operand 655 states and 655 transitions. Second operand 165 states. [2018-10-01 01:10:18,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:18,863 INFO L93 Difference]: Finished difference Result 661 states and 661 transitions. [2018-10-01 01:10:18,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2018-10-01 01:10:18,863 INFO L78 Accepts]: Start accepts. Automaton has 165 states. Word has length 654 [2018-10-01 01:10:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:18,864 INFO L225 Difference]: With dead ends: 661 [2018-10-01 01:10:18,864 INFO L226 Difference]: Without dead ends: 659 [2018-10-01 01:10:18,864 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 817 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:10:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2018-10-01 01:10:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2018-10-01 01:10:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2018-10-01 01:10:18,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 659 transitions. [2018-10-01 01:10:18,867 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 659 transitions. Word has length 654 [2018-10-01 01:10:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:18,868 INFO L480 AbstractCegarLoop]: Abstraction has 659 states and 659 transitions. [2018-10-01 01:10:18,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 165 states. [2018-10-01 01:10:18,868 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 659 transitions. [2018-10-01 01:10:18,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-10-01 01:10:18,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:18,871 INFO L375 BasicCegarLoop]: trace histogram [163, 163, 163, 163, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:18,871 INFO L423 AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:18,871 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:18,871 INFO L82 PathProgramCache]: Analyzing trace with hash -297381174, now seen corresponding path program 163 times [2018-10-01 01:10:18,871 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:18,871 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:18,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:18,872 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:18,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:20,342 INFO L134 CoverageAnalysis]: Checked inductivity of 52975 backedges. 0 proven. 52975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:20,342 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:20,342 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:20,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:20,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 52975 backedges. 0 proven. 52975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:21,778 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:21,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [165, 165] total 165 [2018-10-01 01:10:21,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states [2018-10-01 01:10:21,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants. [2018-10-01 01:10:21,781 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:21,781 INFO L87 Difference]: Start difference. First operand 659 states and 659 transitions. Second operand 166 states. [2018-10-01 01:10:24,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:24,102 INFO L93 Difference]: Finished difference Result 665 states and 665 transitions. [2018-10-01 01:10:24,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2018-10-01 01:10:24,103 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 658 [2018-10-01 01:10:24,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:24,103 INFO L225 Difference]: With dead ends: 665 [2018-10-01 01:10:24,104 INFO L226 Difference]: Without dead ends: 663 [2018-10-01 01:10:24,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:10:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2018-10-01 01:10:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2018-10-01 01:10:24,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2018-10-01 01:10:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 663 transitions. [2018-10-01 01:10:24,107 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 663 transitions. Word has length 658 [2018-10-01 01:10:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:24,107 INFO L480 AbstractCegarLoop]: Abstraction has 663 states and 663 transitions. [2018-10-01 01:10:24,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states. [2018-10-01 01:10:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 663 transitions. [2018-10-01 01:10:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2018-10-01 01:10:24,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:24,110 INFO L375 BasicCegarLoop]: trace histogram [164, 164, 164, 164, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:24,110 INFO L423 AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:24,111 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:24,111 INFO L82 PathProgramCache]: Analyzing trace with hash -868406412, now seen corresponding path program 164 times [2018-10-01 01:10:24,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:24,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:24,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:10:24,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 53628 backedges. 0 proven. 53628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:25,590 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:25,590 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:25,597 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:10:25,722 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:10:25,722 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:25,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 53628 backedges. 0 proven. 53628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:27,029 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:27,029 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [166, 166] total 166 [2018-10-01 01:10:27,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 167 states [2018-10-01 01:10:27,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2018-10-01 01:10:27,031 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:27,032 INFO L87 Difference]: Start difference. First operand 663 states and 663 transitions. Second operand 167 states. [2018-10-01 01:10:30,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:30,447 INFO L93 Difference]: Finished difference Result 669 states and 669 transitions. [2018-10-01 01:10:30,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2018-10-01 01:10:30,448 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 662 [2018-10-01 01:10:30,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:30,448 INFO L225 Difference]: With dead ends: 669 [2018-10-01 01:10:30,448 INFO L226 Difference]: Without dead ends: 667 [2018-10-01 01:10:30,449 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:10:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-10-01 01:10:30,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-10-01 01:10:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-10-01 01:10:30,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 667 transitions. [2018-10-01 01:10:30,452 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 667 transitions. Word has length 662 [2018-10-01 01:10:30,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:30,452 INFO L480 AbstractCegarLoop]: Abstraction has 667 states and 667 transitions. [2018-10-01 01:10:30,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 167 states. [2018-10-01 01:10:30,452 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 667 transitions. [2018-10-01 01:10:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2018-10-01 01:10:30,455 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:30,456 INFO L375 BasicCegarLoop]: trace histogram [165, 165, 165, 165, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:30,456 INFO L423 AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:30,456 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:30,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1402757346, now seen corresponding path program 165 times [2018-10-01 01:10:30,456 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:30,456 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:30,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:30,457 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:30,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 54285 backedges. 0 proven. 54285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:31,919 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:31,919 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:31,927 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:10:32,425 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 166 check-sat command(s) [2018-10-01 01:10:32,425 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:32,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 54285 backedges. 0 proven. 54285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:33,720 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:33,720 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [167, 167] total 167 [2018-10-01 01:10:33,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states [2018-10-01 01:10:33,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants. [2018-10-01 01:10:33,722 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:33,722 INFO L87 Difference]: Start difference. First operand 667 states and 667 transitions. Second operand 168 states. [2018-10-01 01:10:38,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:38,033 INFO L93 Difference]: Finished difference Result 673 states and 673 transitions. [2018-10-01 01:10:38,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2018-10-01 01:10:38,033 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 666 [2018-10-01 01:10:38,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:38,034 INFO L225 Difference]: With dead ends: 673 [2018-10-01 01:10:38,034 INFO L226 Difference]: Without dead ends: 671 [2018-10-01 01:10:38,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 832 GetRequests, 666 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:10:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2018-10-01 01:10:38,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2018-10-01 01:10:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2018-10-01 01:10:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 671 transitions. [2018-10-01 01:10:38,037 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 671 transitions. Word has length 666 [2018-10-01 01:10:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:38,037 INFO L480 AbstractCegarLoop]: Abstraction has 671 states and 671 transitions. [2018-10-01 01:10:38,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states. [2018-10-01 01:10:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 671 transitions. [2018-10-01 01:10:38,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 671 [2018-10-01 01:10:38,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:38,041 INFO L375 BasicCegarLoop]: trace histogram [166, 166, 166, 166, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:38,041 INFO L423 AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:38,041 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:38,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1735667144, now seen corresponding path program 166 times [2018-10-01 01:10:38,041 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:38,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:38,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:38,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:38,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:39,537 INFO L134 CoverageAnalysis]: Checked inductivity of 54946 backedges. 0 proven. 54946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:39,538 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:39,538 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:39,544 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:10:39,683 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:10:39,683 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:39,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 54946 backedges. 0 proven. 54946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:41,001 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:41,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [168, 168] total 168 [2018-10-01 01:10:41,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 169 states [2018-10-01 01:10:41,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2018-10-01 01:10:41,004 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:41,004 INFO L87 Difference]: Start difference. First operand 671 states and 671 transitions. Second operand 169 states. [2018-10-01 01:10:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:45,883 INFO L93 Difference]: Finished difference Result 677 states and 677 transitions. [2018-10-01 01:10:45,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2018-10-01 01:10:45,883 INFO L78 Accepts]: Start accepts. Automaton has 169 states. Word has length 670 [2018-10-01 01:10:45,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:45,884 INFO L225 Difference]: With dead ends: 677 [2018-10-01 01:10:45,884 INFO L226 Difference]: Without dead ends: 675 [2018-10-01 01:10:45,885 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:10:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2018-10-01 01:10:45,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2018-10-01 01:10:45,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2018-10-01 01:10:45,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 675 transitions. [2018-10-01 01:10:45,888 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 675 transitions. Word has length 670 [2018-10-01 01:10:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:45,889 INFO L480 AbstractCegarLoop]: Abstraction has 675 states and 675 transitions. [2018-10-01 01:10:45,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 169 states. [2018-10-01 01:10:45,889 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 675 transitions. [2018-10-01 01:10:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2018-10-01 01:10:45,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:45,892 INFO L375 BasicCegarLoop]: trace histogram [167, 167, 167, 167, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:45,892 INFO L423 AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:45,892 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:45,892 INFO L82 PathProgramCache]: Analyzing trace with hash -186034318, now seen corresponding path program 167 times [2018-10-01 01:10:45,892 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:45,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:45,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:45,893 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:45,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 55611 backedges. 0 proven. 55611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:47,417 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:47,417 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:47,424 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:10:47,889 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 168 check-sat command(s) [2018-10-01 01:10:47,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:47,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 55611 backedges. 0 proven. 55611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:49,214 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:49,215 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [169, 169] total 169 [2018-10-01 01:10:49,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states [2018-10-01 01:10:49,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2018-10-01 01:10:49,217 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:49,217 INFO L87 Difference]: Start difference. First operand 675 states and 675 transitions. Second operand 170 states. [2018-10-01 01:10:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:10:54,087 INFO L93 Difference]: Finished difference Result 681 states and 681 transitions. [2018-10-01 01:10:54,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2018-10-01 01:10:54,087 INFO L78 Accepts]: Start accepts. Automaton has 170 states. Word has length 674 [2018-10-01 01:10:54,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:10:54,088 INFO L225 Difference]: With dead ends: 681 [2018-10-01 01:10:54,088 INFO L226 Difference]: Without dead ends: 679 [2018-10-01 01:10:54,088 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 842 GetRequests, 674 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time [2018-10-01 01:10:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2018-10-01 01:10:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2018-10-01 01:10:54,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679 states. [2018-10-01 01:10:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 679 transitions. [2018-10-01 01:10:54,091 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 679 transitions. Word has length 674 [2018-10-01 01:10:54,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:10:54,092 INFO L480 AbstractCegarLoop]: Abstraction has 679 states and 679 transitions. [2018-10-01 01:10:54,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 170 states. [2018-10-01 01:10:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 679 transitions. [2018-10-01 01:10:54,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-10-01 01:10:54,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:10:54,095 INFO L375 BasicCegarLoop]: trace histogram [168, 168, 168, 168, 1, 1, 1, 1, 1, 1] [2018-10-01 01:10:54,095 INFO L423 AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:10:54,095 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:10:54,095 INFO L82 PathProgramCache]: Analyzing trace with hash 184392732, now seen corresponding path program 168 times [2018-10-01 01:10:54,095 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:10:54,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:10:54,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:54,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:10:54,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:10:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:10:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 56280 backedges. 0 proven. 56280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:55,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:10:55,669 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:10:55,675 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:10:56,086 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 169 check-sat command(s) [2018-10-01 01:10:56,087 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:10:56,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:10:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 56280 backedges. 0 proven. 56280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:10:57,440 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:10:57,441 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [170, 170] total 170 [2018-10-01 01:10:57,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 171 states [2018-10-01 01:10:57,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 171 interpolants. [2018-10-01 01:10:57,443 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:10:57,443 INFO L87 Difference]: Start difference. First operand 679 states and 679 transitions. Second operand 171 states. [2018-10-01 01:11:01,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:01,521 INFO L93 Difference]: Finished difference Result 685 states and 685 transitions. [2018-10-01 01:11:01,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2018-10-01 01:11:01,521 INFO L78 Accepts]: Start accepts. Automaton has 171 states. Word has length 678 [2018-10-01 01:11:01,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:01,522 INFO L225 Difference]: With dead ends: 685 [2018-10-01 01:11:01,522 INFO L226 Difference]: Without dead ends: 683 [2018-10-01 01:11:01,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-10-01 01:11:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-10-01 01:11:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-10-01 01:11:01,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-10-01 01:11:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 683 transitions. [2018-10-01 01:11:01,525 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 683 transitions. Word has length 678 [2018-10-01 01:11:01,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:01,525 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 683 transitions. [2018-10-01 01:11:01,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 171 states. [2018-10-01 01:11:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 683 transitions. [2018-10-01 01:11:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2018-10-01 01:11:01,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:01,529 INFO L375 BasicCegarLoop]: trace histogram [169, 169, 169, 169, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:01,529 INFO L423 AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:01,529 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:01,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1096057914, now seen corresponding path program 169 times [2018-10-01 01:11:01,529 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:01,529 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:01,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:01,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:01,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 56953 backedges. 0 proven. 56953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:03,219 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:03,220 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:03,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:03,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 56953 backedges. 0 proven. 56953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:04,741 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:04,741 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [171, 171] total 171 [2018-10-01 01:11:04,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 172 states [2018-10-01 01:11:04,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 172 interpolants. [2018-10-01 01:11:04,744 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:04,744 INFO L87 Difference]: Start difference. First operand 683 states and 683 transitions. Second operand 172 states. [2018-10-01 01:11:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:07,242 INFO L93 Difference]: Finished difference Result 689 states and 689 transitions. [2018-10-01 01:11:07,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2018-10-01 01:11:07,242 INFO L78 Accepts]: Start accepts. Automaton has 172 states. Word has length 682 [2018-10-01 01:11:07,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:07,243 INFO L225 Difference]: With dead ends: 689 [2018-10-01 01:11:07,244 INFO L226 Difference]: Without dead ends: 687 [2018-10-01 01:11:07,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:11:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2018-10-01 01:11:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2018-10-01 01:11:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2018-10-01 01:11:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 687 transitions. [2018-10-01 01:11:07,247 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 687 transitions. Word has length 682 [2018-10-01 01:11:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:07,247 INFO L480 AbstractCegarLoop]: Abstraction has 687 states and 687 transitions. [2018-10-01 01:11:07,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 172 states. [2018-10-01 01:11:07,248 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 687 transitions. [2018-10-01 01:11:07,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2018-10-01 01:11:07,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:07,251 INFO L375 BasicCegarLoop]: trace histogram [170, 170, 170, 170, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:07,251 INFO L423 AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:07,251 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:07,251 INFO L82 PathProgramCache]: Analyzing trace with hash 598570608, now seen corresponding path program 170 times [2018-10-01 01:11:07,251 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:07,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:07,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:07,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:07,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 57630 backedges. 0 proven. 57630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:09,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:09,074 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:09,083 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:09,213 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:09,213 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:09,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 57630 backedges. 0 proven. 57630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:10,569 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:10,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [172, 172] total 172 [2018-10-01 01:11:10,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 173 states [2018-10-01 01:11:10,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2018-10-01 01:11:10,571 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:10,571 INFO L87 Difference]: Start difference. First operand 687 states and 687 transitions. Second operand 173 states. [2018-10-01 01:11:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:15,364 INFO L93 Difference]: Finished difference Result 693 states and 693 transitions. [2018-10-01 01:11:15,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2018-10-01 01:11:15,364 INFO L78 Accepts]: Start accepts. Automaton has 173 states. Word has length 686 [2018-10-01 01:11:15,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:15,365 INFO L225 Difference]: With dead ends: 693 [2018-10-01 01:11:15,365 INFO L226 Difference]: Without dead ends: 691 [2018-10-01 01:11:15,365 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:11:15,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2018-10-01 01:11:15,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2018-10-01 01:11:15,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2018-10-01 01:11:15,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 691 transitions. [2018-10-01 01:11:15,368 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 691 transitions. Word has length 686 [2018-10-01 01:11:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:15,369 INFO L480 AbstractCegarLoop]: Abstraction has 691 states and 691 transitions. [2018-10-01 01:11:15,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 173 states. [2018-10-01 01:11:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 691 transitions. [2018-10-01 01:11:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2018-10-01 01:11:15,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:15,372 INFO L375 BasicCegarLoop]: trace histogram [171, 171, 171, 171, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:15,372 INFO L423 AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:15,372 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:15,372 INFO L82 PathProgramCache]: Analyzing trace with hash -327283686, now seen corresponding path program 171 times [2018-10-01 01:11:15,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:15,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:15,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:15,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 58311 backedges. 0 proven. 58311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:16,959 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:16,959 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:16,967 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:11:17,429 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 172 check-sat command(s) [2018-10-01 01:11:17,429 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:17,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 58311 backedges. 0 proven. 58311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:18,993 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:18,993 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173] total 173 [2018-10-01 01:11:18,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 174 states [2018-10-01 01:11:18,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 174 interpolants. [2018-10-01 01:11:18,996 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:18,996 INFO L87 Difference]: Start difference. First operand 691 states and 691 transitions. Second operand 174 states. [2018-10-01 01:11:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:23,066 INFO L93 Difference]: Finished difference Result 697 states and 697 transitions. [2018-10-01 01:11:23,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2018-10-01 01:11:23,066 INFO L78 Accepts]: Start accepts. Automaton has 174 states. Word has length 690 [2018-10-01 01:11:23,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:23,067 INFO L225 Difference]: With dead ends: 697 [2018-10-01 01:11:23,067 INFO L226 Difference]: Without dead ends: 695 [2018-10-01 01:11:23,067 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:11:23,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2018-10-01 01:11:23,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2018-10-01 01:11:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2018-10-01 01:11:23,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 695 transitions. [2018-10-01 01:11:23,070 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 695 transitions. Word has length 690 [2018-10-01 01:11:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:23,071 INFO L480 AbstractCegarLoop]: Abstraction has 695 states and 695 transitions. [2018-10-01 01:11:23,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 174 states. [2018-10-01 01:11:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 695 transitions. [2018-10-01 01:11:23,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 695 [2018-10-01 01:11:23,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:23,074 INFO L375 BasicCegarLoop]: trace histogram [172, 172, 172, 172, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:23,074 INFO L423 AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:23,074 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:23,074 INFO L82 PathProgramCache]: Analyzing trace with hash 173522116, now seen corresponding path program 172 times [2018-10-01 01:11:23,075 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:23,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:23,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:23,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:23,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 58996 backedges. 0 proven. 58996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:24,822 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:24,822 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:24,828 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:11:24,973 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:11:24,973 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:24,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 58996 backedges. 0 proven. 58996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:26,350 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:26,351 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [174, 174] total 174 [2018-10-01 01:11:26,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 175 states [2018-10-01 01:11:26,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2018-10-01 01:11:26,353 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:26,353 INFO L87 Difference]: Start difference. First operand 695 states and 695 transitions. Second operand 175 states. [2018-10-01 01:11:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:30,995 INFO L93 Difference]: Finished difference Result 701 states and 701 transitions. [2018-10-01 01:11:30,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-10-01 01:11:30,995 INFO L78 Accepts]: Start accepts. Automaton has 175 states. Word has length 694 [2018-10-01 01:11:30,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:30,996 INFO L225 Difference]: With dead ends: 701 [2018-10-01 01:11:30,996 INFO L226 Difference]: Without dead ends: 699 [2018-10-01 01:11:30,996 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:11:30,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-10-01 01:11:31,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2018-10-01 01:11:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-01 01:11:31,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 699 transitions. [2018-10-01 01:11:31,001 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 699 transitions. Word has length 694 [2018-10-01 01:11:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:31,001 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 699 transitions. [2018-10-01 01:11:31,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 175 states. [2018-10-01 01:11:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 699 transitions. [2018-10-01 01:11:31,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2018-10-01 01:11:31,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:31,006 INFO L375 BasicCegarLoop]: trace histogram [173, 173, 173, 173, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:31,006 INFO L423 AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:31,006 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:31,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1295321198, now seen corresponding path program 173 times [2018-10-01 01:11:31,006 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:31,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:31,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:31,007 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:31,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 59685 backedges. 0 proven. 59685 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:32,653 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:32,653 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:32,661 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:11:33,134 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 174 check-sat command(s) [2018-10-01 01:11:33,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:33,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:34,754 INFO L134 CoverageAnalysis]: Checked inductivity of 59685 backedges. 0 proven. 59685 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:34,775 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:34,775 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [175, 175] total 175 [2018-10-01 01:11:34,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 176 states [2018-10-01 01:11:34,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2018-10-01 01:11:34,778 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:34,779 INFO L87 Difference]: Start difference. First operand 699 states and 699 transitions. Second operand 176 states. [2018-10-01 01:11:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:37,268 INFO L93 Difference]: Finished difference Result 705 states and 705 transitions. [2018-10-01 01:11:37,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2018-10-01 01:11:37,268 INFO L78 Accepts]: Start accepts. Automaton has 176 states. Word has length 698 [2018-10-01 01:11:37,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:37,269 INFO L225 Difference]: With dead ends: 705 [2018-10-01 01:11:37,269 INFO L226 Difference]: Without dead ends: 703 [2018-10-01 01:11:37,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 872 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:11:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2018-10-01 01:11:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2018-10-01 01:11:37,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2018-10-01 01:11:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 703 transitions. [2018-10-01 01:11:37,272 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 703 transitions. Word has length 698 [2018-10-01 01:11:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:37,273 INFO L480 AbstractCegarLoop]: Abstraction has 703 states and 703 transitions. [2018-10-01 01:11:37,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 176 states. [2018-10-01 01:11:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 703 transitions. [2018-10-01 01:11:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2018-10-01 01:11:37,276 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:37,276 INFO L375 BasicCegarLoop]: trace histogram [174, 174, 174, 174, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:37,276 INFO L423 AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:37,276 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:37,276 INFO L82 PathProgramCache]: Analyzing trace with hash 63991576, now seen corresponding path program 174 times [2018-10-01 01:11:37,276 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:37,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:37,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:37,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:37,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:39,146 INFO L134 CoverageAnalysis]: Checked inductivity of 60378 backedges. 0 proven. 60378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:39,147 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:39,147 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:39,154 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:11:39,588 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 175 check-sat command(s) [2018-10-01 01:11:39,588 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:39,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 60378 backedges. 0 proven. 60378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:40,971 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:40,971 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [176, 176] total 176 [2018-10-01 01:11:40,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 177 states [2018-10-01 01:11:40,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 177 interpolants. [2018-10-01 01:11:40,973 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:40,974 INFO L87 Difference]: Start difference. First operand 703 states and 703 transitions. Second operand 177 states. [2018-10-01 01:11:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:44,444 INFO L93 Difference]: Finished difference Result 709 states and 709 transitions. [2018-10-01 01:11:44,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2018-10-01 01:11:44,444 INFO L78 Accepts]: Start accepts. Automaton has 177 states. Word has length 702 [2018-10-01 01:11:44,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:44,445 INFO L225 Difference]: With dead ends: 709 [2018-10-01 01:11:44,445 INFO L226 Difference]: Without dead ends: 707 [2018-10-01 01:11:44,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 702 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:11:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2018-10-01 01:11:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2018-10-01 01:11:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2018-10-01 01:11:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 707 transitions. [2018-10-01 01:11:44,449 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 707 transitions. Word has length 702 [2018-10-01 01:11:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:44,450 INFO L480 AbstractCegarLoop]: Abstraction has 707 states and 707 transitions. [2018-10-01 01:11:44,450 INFO L481 AbstractCegarLoop]: Interpolant automaton has 177 states. [2018-10-01 01:11:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 707 transitions. [2018-10-01 01:11:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2018-10-01 01:11:44,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:44,454 INFO L375 BasicCegarLoop]: trace histogram [175, 175, 175, 175, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:44,454 INFO L423 AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:44,454 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:44,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1683722046, now seen corresponding path program 175 times [2018-10-01 01:11:44,455 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:44,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:44,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:44,455 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:11:44,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 61075 backedges. 0 proven. 61075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:46,139 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:46,139 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:46,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:46,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 61075 backedges. 0 proven. 61075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:47,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:47,780 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [177, 177] total 177 [2018-10-01 01:11:47,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 178 states [2018-10-01 01:11:47,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 178 interpolants. [2018-10-01 01:11:47,783 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:47,783 INFO L87 Difference]: Start difference. First operand 707 states and 707 transitions. Second operand 178 states. [2018-10-01 01:11:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:11:52,003 INFO L93 Difference]: Finished difference Result 713 states and 713 transitions. [2018-10-01 01:11:52,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2018-10-01 01:11:52,003 INFO L78 Accepts]: Start accepts. Automaton has 178 states. Word has length 706 [2018-10-01 01:11:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:11:52,004 INFO L225 Difference]: With dead ends: 713 [2018-10-01 01:11:52,004 INFO L226 Difference]: Without dead ends: 711 [2018-10-01 01:11:52,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 882 GetRequests, 706 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:11:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2018-10-01 01:11:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2018-10-01 01:11:52,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 711 states. [2018-10-01 01:11:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 711 transitions. [2018-10-01 01:11:52,008 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 711 transitions. Word has length 706 [2018-10-01 01:11:52,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:11:52,009 INFO L480 AbstractCegarLoop]: Abstraction has 711 states and 711 transitions. [2018-10-01 01:11:52,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 178 states. [2018-10-01 01:11:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 711 transitions. [2018-10-01 01:11:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2018-10-01 01:11:52,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:11:52,014 INFO L375 BasicCegarLoop]: trace histogram [176, 176, 176, 176, 1, 1, 1, 1, 1, 1] [2018-10-01 01:11:52,014 INFO L423 AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:11:52,014 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:11:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1089178988, now seen corresponding path program 176 times [2018-10-01 01:11:52,014 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:11:52,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:11:52,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:52,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:11:52,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:11:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:11:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 61776 backedges. 0 proven. 61776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:53,706 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:11:53,706 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:11:53,714 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:11:53,862 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:11:53,862 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:11:53,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:11:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 61776 backedges. 0 proven. 61776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:11:55,540 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:11:55,540 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [178, 178] total 178 [2018-10-01 01:11:55,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 179 states [2018-10-01 01:11:55,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2018-10-01 01:11:55,543 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:11:55,543 INFO L87 Difference]: Start difference. First operand 711 states and 711 transitions. Second operand 179 states. [2018-10-01 01:12:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:00,470 INFO L93 Difference]: Finished difference Result 717 states and 717 transitions. [2018-10-01 01:12:00,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2018-10-01 01:12:00,470 INFO L78 Accepts]: Start accepts. Automaton has 179 states. Word has length 710 [2018-10-01 01:12:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:00,471 INFO L225 Difference]: With dead ends: 717 [2018-10-01 01:12:00,471 INFO L226 Difference]: Without dead ends: 715 [2018-10-01 01:12:00,472 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:12:00,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2018-10-01 01:12:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2018-10-01 01:12:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2018-10-01 01:12:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 715 transitions. [2018-10-01 01:12:00,475 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 715 transitions. Word has length 710 [2018-10-01 01:12:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:00,475 INFO L480 AbstractCegarLoop]: Abstraction has 715 states and 715 transitions. [2018-10-01 01:12:00,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 179 states. [2018-10-01 01:12:00,475 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 715 transitions. [2018-10-01 01:12:00,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2018-10-01 01:12:00,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:00,479 INFO L375 BasicCegarLoop]: trace histogram [177, 177, 177, 177, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:00,479 INFO L423 AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:00,479 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:00,479 INFO L82 PathProgramCache]: Analyzing trace with hash 2124432662, now seen corresponding path program 177 times [2018-10-01 01:12:00,479 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:00,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:00,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:00,480 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:00,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 62481 backedges. 0 proven. 62481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:02,216 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:02,216 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:02,222 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:02,733 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 178 check-sat command(s) [2018-10-01 01:12:02,733 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:02,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:04,175 INFO L134 CoverageAnalysis]: Checked inductivity of 62481 backedges. 0 proven. 62481 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:04,196 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:04,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [179, 179] total 179 [2018-10-01 01:12:04,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 180 states [2018-10-01 01:12:04,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 180 interpolants. [2018-10-01 01:12:04,198 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:04,198 INFO L87 Difference]: Start difference. First operand 715 states and 715 transitions. Second operand 180 states. [2018-10-01 01:12:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:09,990 INFO L93 Difference]: Finished difference Result 721 states and 721 transitions. [2018-10-01 01:12:09,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2018-10-01 01:12:09,990 INFO L78 Accepts]: Start accepts. Automaton has 180 states. Word has length 714 [2018-10-01 01:12:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:09,991 INFO L225 Difference]: With dead ends: 721 [2018-10-01 01:12:09,991 INFO L226 Difference]: Without dead ends: 719 [2018-10-01 01:12:09,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 892 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s Time [2018-10-01 01:12:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2018-10-01 01:12:09,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2018-10-01 01:12:09,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2018-10-01 01:12:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 719 transitions. [2018-10-01 01:12:09,996 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 719 transitions. Word has length 714 [2018-10-01 01:12:09,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:09,996 INFO L480 AbstractCegarLoop]: Abstraction has 719 states and 719 transitions. [2018-10-01 01:12:09,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 180 states. [2018-10-01 01:12:09,996 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 719 transitions. [2018-10-01 01:12:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2018-10-01 01:12:09,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:10,000 INFO L375 BasicCegarLoop]: trace histogram [178, 178, 178, 178, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:10,000 INFO L423 AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:10,000 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:10,000 INFO L82 PathProgramCache]: Analyzing trace with hash -562227264, now seen corresponding path program 178 times [2018-10-01 01:12:10,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:10,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:10,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:10,001 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:10,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 63190 backedges. 0 proven. 63190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:11,752 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:11,752 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:11,758 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:12:11,911 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:12:11,911 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:11,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 63190 backedges. 0 proven. 63190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:13,394 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:13,395 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [180, 180] total 180 [2018-10-01 01:12:13,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 181 states [2018-10-01 01:12:13,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2018-10-01 01:12:13,397 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:13,397 INFO L87 Difference]: Start difference. First operand 719 states and 719 transitions. Second operand 181 states. [2018-10-01 01:12:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:16,776 INFO L93 Difference]: Finished difference Result 725 states and 725 transitions. [2018-10-01 01:12:16,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 181 states. [2018-10-01 01:12:16,777 INFO L78 Accepts]: Start accepts. Automaton has 181 states. Word has length 718 [2018-10-01 01:12:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:16,778 INFO L225 Difference]: With dead ends: 725 [2018-10-01 01:12:16,778 INFO L226 Difference]: Without dead ends: 723 [2018-10-01 01:12:16,778 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 897 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:12:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2018-10-01 01:12:16,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2018-10-01 01:12:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2018-10-01 01:12:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 723 transitions. [2018-10-01 01:12:16,781 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 723 transitions. Word has length 718 [2018-10-01 01:12:16,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:16,782 INFO L480 AbstractCegarLoop]: Abstraction has 723 states and 723 transitions. [2018-10-01 01:12:16,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 181 states. [2018-10-01 01:12:16,782 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 723 transitions. [2018-10-01 01:12:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2018-10-01 01:12:16,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:16,785 INFO L375 BasicCegarLoop]: trace histogram [179, 179, 179, 179, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:16,785 INFO L423 AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:16,785 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:16,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1996716694, now seen corresponding path program 179 times [2018-10-01 01:12:16,786 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:16,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:16,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:16,786 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:16,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 63903 backedges. 0 proven. 63903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:18,540 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:18,540 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:18,547 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:12:19,043 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 180 check-sat command(s) [2018-10-01 01:12:19,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:19,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 63903 backedges. 0 proven. 63903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:20,703 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:20,704 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [181, 181] total 181 [2018-10-01 01:12:20,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 182 states [2018-10-01 01:12:20,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2018-10-01 01:12:20,706 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:20,706 INFO L87 Difference]: Start difference. First operand 723 states and 723 transitions. Second operand 182 states. [2018-10-01 01:12:23,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:23,676 INFO L93 Difference]: Finished difference Result 729 states and 729 transitions. [2018-10-01 01:12:23,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2018-10-01 01:12:23,676 INFO L78 Accepts]: Start accepts. Automaton has 182 states. Word has length 722 [2018-10-01 01:12:23,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:23,677 INFO L225 Difference]: With dead ends: 729 [2018-10-01 01:12:23,677 INFO L226 Difference]: Without dead ends: 727 [2018-10-01 01:12:23,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:12:23,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2018-10-01 01:12:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2018-10-01 01:12:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2018-10-01 01:12:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 727 transitions. [2018-10-01 01:12:23,681 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 727 transitions. Word has length 722 [2018-10-01 01:12:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:23,681 INFO L480 AbstractCegarLoop]: Abstraction has 727 states and 727 transitions. [2018-10-01 01:12:23,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 182 states. [2018-10-01 01:12:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 727 transitions. [2018-10-01 01:12:23,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2018-10-01 01:12:23,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:23,685 INFO L375 BasicCegarLoop]: trace histogram [180, 180, 180, 180, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:23,685 INFO L423 AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:23,685 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:23,685 INFO L82 PathProgramCache]: Analyzing trace with hash -447148524, now seen corresponding path program 180 times [2018-10-01 01:12:23,685 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:23,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:23,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:23,686 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:23,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 64620 backedges. 0 proven. 64620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:25,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:25,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:25,611 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:12:26,078 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 181 check-sat command(s) [2018-10-01 01:12:26,078 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:26,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 64620 backedges. 0 proven. 64620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:27,547 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:27,547 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [182, 182] total 182 [2018-10-01 01:12:27,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 183 states [2018-10-01 01:12:27,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 183 interpolants. [2018-10-01 01:12:27,550 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:27,550 INFO L87 Difference]: Start difference. First operand 727 states and 727 transitions. Second operand 183 states. [2018-10-01 01:12:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:34,226 INFO L93 Difference]: Finished difference Result 733 states and 733 transitions. [2018-10-01 01:12:34,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2018-10-01 01:12:34,226 INFO L78 Accepts]: Start accepts. Automaton has 183 states. Word has length 726 [2018-10-01 01:12:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:34,227 INFO L225 Difference]: With dead ends: 733 [2018-10-01 01:12:34,227 INFO L226 Difference]: Without dead ends: 731 [2018-10-01 01:12:34,228 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:12:34,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2018-10-01 01:12:34,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2018-10-01 01:12:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2018-10-01 01:12:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 731 transitions. [2018-10-01 01:12:34,231 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 731 transitions. Word has length 726 [2018-10-01 01:12:34,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:34,231 INFO L480 AbstractCegarLoop]: Abstraction has 731 states and 731 transitions. [2018-10-01 01:12:34,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 183 states. [2018-10-01 01:12:34,231 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 731 transitions. [2018-10-01 01:12:34,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2018-10-01 01:12:34,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:34,235 INFO L375 BasicCegarLoop]: trace histogram [181, 181, 181, 181, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:34,235 INFO L423 AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:34,235 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:34,235 INFO L82 PathProgramCache]: Analyzing trace with hash 965554622, now seen corresponding path program 181 times [2018-10-01 01:12:34,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:34,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:34,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:34,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:34,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 65341 backedges. 0 proven. 65341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:36,167 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:36,167 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:36,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:36,322 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 65341 backedges. 0 proven. 65341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:37,771 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:37,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [183, 183] total 183 [2018-10-01 01:12:37,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 184 states [2018-10-01 01:12:37,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 184 interpolants. [2018-10-01 01:12:37,774 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:37,774 INFO L87 Difference]: Start difference. First operand 731 states and 731 transitions. Second operand 184 states. [2018-10-01 01:12:41,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:41,097 INFO L93 Difference]: Finished difference Result 737 states and 737 transitions. [2018-10-01 01:12:41,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2018-10-01 01:12:41,097 INFO L78 Accepts]: Start accepts. Automaton has 184 states. Word has length 730 [2018-10-01 01:12:41,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:41,099 INFO L225 Difference]: With dead ends: 737 [2018-10-01 01:12:41,099 INFO L226 Difference]: Without dead ends: 735 [2018-10-01 01:12:41,099 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:12:41,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2018-10-01 01:12:41,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2018-10-01 01:12:41,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 735 states. [2018-10-01 01:12:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 735 transitions. [2018-10-01 01:12:41,102 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 735 transitions. Word has length 730 [2018-10-01 01:12:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:41,103 INFO L480 AbstractCegarLoop]: Abstraction has 735 states and 735 transitions. [2018-10-01 01:12:41,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 184 states. [2018-10-01 01:12:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 735 transitions. [2018-10-01 01:12:41,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2018-10-01 01:12:41,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:41,106 INFO L375 BasicCegarLoop]: trace histogram [182, 182, 182, 182, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:41,106 INFO L423 AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:41,107 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1246982248, now seen corresponding path program 182 times [2018-10-01 01:12:41,107 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:41,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:41,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:41,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:12:41,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 66066 backedges. 0 proven. 66066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:42,901 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:42,901 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:42,907 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:12:43,045 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:12:43,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:43,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 66066 backedges. 0 proven. 66066 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:44,524 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:44,524 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [184, 184] total 184 [2018-10-01 01:12:44,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 185 states [2018-10-01 01:12:44,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2018-10-01 01:12:44,527 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:44,527 INFO L87 Difference]: Start difference. First operand 735 states and 735 transitions. Second operand 185 states. [2018-10-01 01:12:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:51,382 INFO L93 Difference]: Finished difference Result 741 states and 741 transitions. [2018-10-01 01:12:51,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2018-10-01 01:12:51,382 INFO L78 Accepts]: Start accepts. Automaton has 185 states. Word has length 734 [2018-10-01 01:12:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:51,383 INFO L225 Difference]: With dead ends: 741 [2018-10-01 01:12:51,383 INFO L226 Difference]: Without dead ends: 739 [2018-10-01 01:12:51,383 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:12:51,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2018-10-01 01:12:51,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 739. [2018-10-01 01:12:51,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2018-10-01 01:12:51,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 739 transitions. [2018-10-01 01:12:51,387 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 739 transitions. Word has length 734 [2018-10-01 01:12:51,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:51,387 INFO L480 AbstractCegarLoop]: Abstraction has 739 states and 739 transitions. [2018-10-01 01:12:51,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 185 states. [2018-10-01 01:12:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 739 transitions. [2018-10-01 01:12:51,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2018-10-01 01:12:51,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:51,391 INFO L375 BasicCegarLoop]: trace histogram [183, 183, 183, 183, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:51,391 INFO L423 AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:51,391 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:51,391 INFO L82 PathProgramCache]: Analyzing trace with hash -81376750, now seen corresponding path program 183 times [2018-10-01 01:12:51,391 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:51,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:51,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:51,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:51,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:12:53,220 INFO L134 CoverageAnalysis]: Checked inductivity of 66795 backedges. 0 proven. 66795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:53,220 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:12:53,220 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:12:53,228 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:12:53,756 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 184 check-sat command(s) [2018-10-01 01:12:53,756 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:12:53,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:12:55,272 INFO L134 CoverageAnalysis]: Checked inductivity of 66795 backedges. 0 proven. 66795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:12:55,294 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:12:55,294 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [185, 185] total 185 [2018-10-01 01:12:55,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 186 states [2018-10-01 01:12:55,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2018-10-01 01:12:55,297 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:12:55,297 INFO L87 Difference]: Start difference. First operand 739 states and 739 transitions. Second operand 186 states. [2018-10-01 01:12:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:12:58,809 INFO L93 Difference]: Finished difference Result 745 states and 745 transitions. [2018-10-01 01:12:58,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2018-10-01 01:12:58,810 INFO L78 Accepts]: Start accepts. Automaton has 186 states. Word has length 738 [2018-10-01 01:12:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:12:58,811 INFO L225 Difference]: With dead ends: 745 [2018-10-01 01:12:58,811 INFO L226 Difference]: Without dead ends: 743 [2018-10-01 01:12:58,811 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 922 GetRequests, 738 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:12:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-10-01 01:12:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2018-10-01 01:12:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2018-10-01 01:12:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 743 transitions. [2018-10-01 01:12:58,816 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 743 transitions. Word has length 738 [2018-10-01 01:12:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:12:58,816 INFO L480 AbstractCegarLoop]: Abstraction has 743 states and 743 transitions. [2018-10-01 01:12:58,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 186 states. [2018-10-01 01:12:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 743 transitions. [2018-10-01 01:12:58,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2018-10-01 01:12:58,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:12:58,821 INFO L375 BasicCegarLoop]: trace histogram [184, 184, 184, 184, 1, 1, 1, 1, 1, 1] [2018-10-01 01:12:58,821 INFO L423 AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:12:58,822 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:12:58,822 INFO L82 PathProgramCache]: Analyzing trace with hash -297779524, now seen corresponding path program 184 times [2018-10-01 01:12:58,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:12:58,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:12:58,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:58,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:12:58,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:12:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 67528 backedges. 0 proven. 67528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:00,660 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:00,660 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:00,667 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:00,827 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:00,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:00,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 67528 backedges. 0 proven. 67528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:02,300 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:02,300 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [186, 186] total 186 [2018-10-01 01:13:02,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 187 states [2018-10-01 01:13:02,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 187 interpolants. [2018-10-01 01:13:02,303 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:02,303 INFO L87 Difference]: Start difference. First operand 743 states and 743 transitions. Second operand 187 states. [2018-10-01 01:13:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:05,711 INFO L93 Difference]: Finished difference Result 749 states and 749 transitions. [2018-10-01 01:13:05,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2018-10-01 01:13:05,712 INFO L78 Accepts]: Start accepts. Automaton has 187 states. Word has length 742 [2018-10-01 01:13:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:05,713 INFO L225 Difference]: With dead ends: 749 [2018-10-01 01:13:05,713 INFO L226 Difference]: Without dead ends: 747 [2018-10-01 01:13:05,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 927 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time [2018-10-01 01:13:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2018-10-01 01:13:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2018-10-01 01:13:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2018-10-01 01:13:05,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 747 transitions. [2018-10-01 01:13:05,717 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 747 transitions. Word has length 742 [2018-10-01 01:13:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:05,717 INFO L480 AbstractCegarLoop]: Abstraction has 747 states and 747 transitions. [2018-10-01 01:13:05,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 187 states. [2018-10-01 01:13:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 747 transitions. [2018-10-01 01:13:05,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2018-10-01 01:13:05,723 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:05,723 INFO L375 BasicCegarLoop]: trace histogram [185, 185, 185, 185, 1, 1, 1, 1, 1, 1] [2018-10-01 01:13:05,723 INFO L423 AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:05,723 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash 614190694, now seen corresponding path program 185 times [2018-10-01 01:13:05,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:05,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:05,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:05,724 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:05,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 68265 backedges. 0 proven. 68265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:07,702 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:07,702 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:07,708 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:13:08,238 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 186 check-sat command(s) [2018-10-01 01:13:08,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:08,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 68265 backedges. 0 proven. 68265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:09,739 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:09,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [187, 187] total 187 [2018-10-01 01:13:09,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 188 states [2018-10-01 01:13:09,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2018-10-01 01:13:09,742 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:09,742 INFO L87 Difference]: Start difference. First operand 747 states and 747 transitions. Second operand 188 states. [2018-10-01 01:13:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:14,208 INFO L93 Difference]: Finished difference Result 753 states and 753 transitions. [2018-10-01 01:13:14,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2018-10-01 01:13:14,209 INFO L78 Accepts]: Start accepts. Automaton has 188 states. Word has length 746 [2018-10-01 01:13:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:14,210 INFO L225 Difference]: With dead ends: 753 [2018-10-01 01:13:14,210 INFO L226 Difference]: Without dead ends: 751 [2018-10-01 01:13:14,210 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:13:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2018-10-01 01:13:14,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2018-10-01 01:13:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 751 states. [2018-10-01 01:13:14,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 751 transitions. [2018-10-01 01:13:14,216 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 751 transitions. Word has length 746 [2018-10-01 01:13:14,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:14,216 INFO L480 AbstractCegarLoop]: Abstraction has 751 states and 751 transitions. [2018-10-01 01:13:14,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 188 states. [2018-10-01 01:13:14,217 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 751 transitions. [2018-10-01 01:13:14,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-10-01 01:13:14,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:14,222 INFO L375 BasicCegarLoop]: trace histogram [186, 186, 186, 186, 1, 1, 1, 1, 1, 1] [2018-10-01 01:13:14,222 INFO L423 AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:14,222 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:14,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1644988144, now seen corresponding path program 186 times [2018-10-01 01:13:14,222 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:14,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:14,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:14,223 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:14,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:16,182 INFO L134 CoverageAnalysis]: Checked inductivity of 69006 backedges. 0 proven. 69006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:16,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:16,182 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:16,189 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:13:16,688 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 187 check-sat command(s) [2018-10-01 01:13:16,689 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:16,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 69006 backedges. 0 proven. 69006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:18,269 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:18,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [188, 188] total 188 [2018-10-01 01:13:18,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 189 states [2018-10-01 01:13:18,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2018-10-01 01:13:18,272 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:18,272 INFO L87 Difference]: Start difference. First operand 751 states and 751 transitions. Second operand 189 states. [2018-10-01 01:13:23,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:23,165 INFO L93 Difference]: Finished difference Result 757 states and 757 transitions. [2018-10-01 01:13:23,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2018-10-01 01:13:23,165 INFO L78 Accepts]: Start accepts. Automaton has 189 states. Word has length 750 [2018-10-01 01:13:23,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:23,166 INFO L225 Difference]: With dead ends: 757 [2018-10-01 01:13:23,166 INFO L226 Difference]: Without dead ends: 755 [2018-10-01 01:13:23,166 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:13:23,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2018-10-01 01:13:23,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2018-10-01 01:13:23,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2018-10-01 01:13:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 755 transitions. [2018-10-01 01:13:23,170 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 755 transitions. Word has length 750 [2018-10-01 01:13:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:23,170 INFO L480 AbstractCegarLoop]: Abstraction has 755 states and 755 transitions. [2018-10-01 01:13:23,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 189 states. [2018-10-01 01:13:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 755 transitions. [2018-10-01 01:13:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2018-10-01 01:13:23,173 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:23,174 INFO L375 BasicCegarLoop]: trace histogram [187, 187, 187, 187, 1, 1, 1, 1, 1, 1] [2018-10-01 01:13:23,174 INFO L423 AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:23,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:23,174 INFO L82 PathProgramCache]: Analyzing trace with hash -121520454, now seen corresponding path program 187 times [2018-10-01 01:13:23,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:23,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:23,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:23,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:23,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 69751 backedges. 0 proven. 69751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:25,072 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:25,072 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:25,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:25,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 69751 backedges. 0 proven. 69751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:26,997 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:26,997 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [189, 189] total 189 [2018-10-01 01:13:26,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 190 states [2018-10-01 01:13:26,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2018-10-01 01:13:27,000 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:27,000 INFO L87 Difference]: Start difference. First operand 755 states and 755 transitions. Second operand 190 states. [2018-10-01 01:13:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:30,661 INFO L93 Difference]: Finished difference Result 761 states and 761 transitions. [2018-10-01 01:13:30,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2018-10-01 01:13:30,662 INFO L78 Accepts]: Start accepts. Automaton has 190 states. Word has length 754 [2018-10-01 01:13:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:30,663 INFO L225 Difference]: With dead ends: 761 [2018-10-01 01:13:30,663 INFO L226 Difference]: Without dead ends: 759 [2018-10-01 01:13:30,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:13:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2018-10-01 01:13:30,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2018-10-01 01:13:30,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-01 01:13:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 759 transitions. [2018-10-01 01:13:30,667 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 759 transitions. Word has length 754 [2018-10-01 01:13:30,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:30,668 INFO L480 AbstractCegarLoop]: Abstraction has 759 states and 759 transitions. [2018-10-01 01:13:30,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 190 states. [2018-10-01 01:13:30,668 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 759 transitions. [2018-10-01 01:13:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2018-10-01 01:13:30,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:30,673 INFO L375 BasicCegarLoop]: trace histogram [188, 188, 188, 188, 1, 1, 1, 1, 1, 1] [2018-10-01 01:13:30,673 INFO L423 AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:30,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:30,674 INFO L82 PathProgramCache]: Analyzing trace with hash 306257764, now seen corresponding path program 188 times [2018-10-01 01:13:30,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:30,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:30,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:30,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:13:30,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 70500 backedges. 0 proven. 70500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:32,714 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:32,714 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:32,721 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:13:32,865 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:13:32,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:32,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:34,328 INFO L134 CoverageAnalysis]: Checked inductivity of 70500 backedges. 0 proven. 70500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:34,348 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:34,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 190] total 190 [2018-10-01 01:13:34,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 191 states [2018-10-01 01:13:34,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2018-10-01 01:13:34,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:34,351 INFO L87 Difference]: Start difference. First operand 759 states and 759 transitions. Second operand 191 states. [2018-10-01 01:13:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:37,334 INFO L93 Difference]: Finished difference Result 765 states and 765 transitions. [2018-10-01 01:13:37,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2018-10-01 01:13:37,334 INFO L78 Accepts]: Start accepts. Automaton has 191 states. Word has length 758 [2018-10-01 01:13:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:37,335 INFO L225 Difference]: With dead ends: 765 [2018-10-01 01:13:37,335 INFO L226 Difference]: Without dead ends: 763 [2018-10-01 01:13:37,335 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 758 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:13:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2018-10-01 01:13:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 763. [2018-10-01 01:13:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2018-10-01 01:13:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 763 transitions. [2018-10-01 01:13:37,339 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 763 transitions. Word has length 758 [2018-10-01 01:13:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:37,339 INFO L480 AbstractCegarLoop]: Abstraction has 763 states and 763 transitions. [2018-10-01 01:13:37,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 191 states. [2018-10-01 01:13:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 763 transitions. [2018-10-01 01:13:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2018-10-01 01:13:37,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:37,343 INFO L375 BasicCegarLoop]: trace histogram [189, 189, 189, 189, 1, 1, 1, 1, 1, 1] [2018-10-01 01:13:37,343 INFO L423 AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:37,343 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1502864626, now seen corresponding path program 189 times [2018-10-01 01:13:37,344 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:37,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:37,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:37,344 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:37,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 71253 backedges. 0 proven. 71253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:39,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:39,297 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:39,307 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:13:39,877 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 190 check-sat command(s) [2018-10-01 01:13:39,877 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:39,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 71253 backedges. 0 proven. 71253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:41,432 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:41,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191] total 191 [2018-10-01 01:13:41,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 192 states [2018-10-01 01:13:41,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2018-10-01 01:13:41,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:41,435 INFO L87 Difference]: Start difference. First operand 763 states and 763 transitions. Second operand 192 states. [2018-10-01 01:13:48,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:48,577 INFO L93 Difference]: Finished difference Result 769 states and 769 transitions. [2018-10-01 01:13:48,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2018-10-01 01:13:48,577 INFO L78 Accepts]: Start accepts. Automaton has 192 states. Word has length 762 [2018-10-01 01:13:48,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:48,578 INFO L225 Difference]: With dead ends: 769 [2018-10-01 01:13:48,578 INFO L226 Difference]: Without dead ends: 767 [2018-10-01 01:13:48,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 952 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s Time [2018-10-01 01:13:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2018-10-01 01:13:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 767. [2018-10-01 01:13:48,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2018-10-01 01:13:48,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 767 transitions. [2018-10-01 01:13:48,582 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 767 transitions. Word has length 762 [2018-10-01 01:13:48,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:48,582 INFO L480 AbstractCegarLoop]: Abstraction has 767 states and 767 transitions. [2018-10-01 01:13:48,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 192 states. [2018-10-01 01:13:48,582 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 767 transitions. [2018-10-01 01:13:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2018-10-01 01:13:48,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:48,586 INFO L375 BasicCegarLoop]: trace histogram [190, 190, 190, 190, 1, 1, 1, 1, 1, 1] [2018-10-01 01:13:48,586 INFO L423 AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:48,586 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:48,587 INFO L82 PathProgramCache]: Analyzing trace with hash -268619336, now seen corresponding path program 190 times [2018-10-01 01:13:48,587 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:48,587 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:48,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:48,588 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:48,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:13:50,518 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:50,519 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:13:50,519 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:13:50,526 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:13:50,690 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:13:50,690 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:13:50,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:13:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:13:52,514 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:13:52,514 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192] total 192 [2018-10-01 01:13:52,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 193 states [2018-10-01 01:13:52,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2018-10-01 01:13:52,517 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:13:52,517 INFO L87 Difference]: Start difference. First operand 767 states and 767 transitions. Second operand 193 states. [2018-10-01 01:13:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:13:58,665 INFO L93 Difference]: Finished difference Result 773 states and 773 transitions. [2018-10-01 01:13:58,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2018-10-01 01:13:58,666 INFO L78 Accepts]: Start accepts. Automaton has 193 states. Word has length 766 [2018-10-01 01:13:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:13:58,667 INFO L225 Difference]: With dead ends: 773 [2018-10-01 01:13:58,667 INFO L226 Difference]: Without dead ends: 771 [2018-10-01 01:13:58,667 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:13:58,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2018-10-01 01:13:58,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2018-10-01 01:13:58,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 771 states. [2018-10-01 01:13:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 771 transitions. [2018-10-01 01:13:58,671 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 771 transitions. Word has length 766 [2018-10-01 01:13:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:13:58,671 INFO L480 AbstractCegarLoop]: Abstraction has 771 states and 771 transitions. [2018-10-01 01:13:58,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 193 states. [2018-10-01 01:13:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 771 transitions. [2018-10-01 01:13:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2018-10-01 01:13:58,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:13:58,677 INFO L375 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 1, 1, 1, 1, 1, 1] [2018-10-01 01:13:58,677 INFO L423 AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:13:58,677 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:13:58,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1215226722, now seen corresponding path program 191 times [2018-10-01 01:13:58,677 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:13:58,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:13:58,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:58,678 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:13:58,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:13:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 72771 backedges. 0 proven. 72771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:00,623 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:00,623 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:00,635 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:01,218 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 192 check-sat command(s) [2018-10-01 01:14:01,218 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:01,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 72771 backedges. 0 proven. 72771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:02,906 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:02,906 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193] total 193 [2018-10-01 01:14:02,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 194 states [2018-10-01 01:14:02,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2018-10-01 01:14:02,910 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:02,910 INFO L87 Difference]: Start difference. First operand 771 states and 771 transitions. Second operand 194 states. [2018-10-01 01:14:07,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:07,779 INFO L93 Difference]: Finished difference Result 777 states and 777 transitions. [2018-10-01 01:14:07,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2018-10-01 01:14:07,779 INFO L78 Accepts]: Start accepts. Automaton has 194 states. Word has length 770 [2018-10-01 01:14:07,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:07,780 INFO L225 Difference]: With dead ends: 777 [2018-10-01 01:14:07,780 INFO L226 Difference]: Without dead ends: 775 [2018-10-01 01:14:07,780 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 770 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:14:07,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2018-10-01 01:14:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2018-10-01 01:14:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 775 states. [2018-10-01 01:14:07,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 775 transitions. [2018-10-01 01:14:07,784 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 775 transitions. Word has length 770 [2018-10-01 01:14:07,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:07,784 INFO L480 AbstractCegarLoop]: Abstraction has 775 states and 775 transitions. [2018-10-01 01:14:07,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 194 states. [2018-10-01 01:14:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 775 transitions. [2018-10-01 01:14:07,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2018-10-01 01:14:07,788 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:07,788 INFO L375 BasicCegarLoop]: trace histogram [192, 192, 192, 192, 1, 1, 1, 1, 1, 1] [2018-10-01 01:14:07,788 INFO L423 AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:07,789 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:07,789 INFO L82 PathProgramCache]: Analyzing trace with hash -939806708, now seen corresponding path program 192 times [2018-10-01 01:14:07,789 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:07,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:07,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:07,789 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:07,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 73536 backedges. 0 proven. 73536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:09,789 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:09,789 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:09,797 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:14:10,324 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 193 check-sat command(s) [2018-10-01 01:14:10,324 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:10,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 73536 backedges. 0 proven. 73536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:11,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:11,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [194, 194] total 194 [2018-10-01 01:14:11,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 195 states [2018-10-01 01:14:11,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 195 interpolants. [2018-10-01 01:14:11,892 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:11,893 INFO L87 Difference]: Start difference. First operand 775 states and 775 transitions. Second operand 195 states. [2018-10-01 01:14:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:16,428 INFO L93 Difference]: Finished difference Result 781 states and 781 transitions. [2018-10-01 01:14:16,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2018-10-01 01:14:16,428 INFO L78 Accepts]: Start accepts. Automaton has 195 states. Word has length 774 [2018-10-01 01:14:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:16,429 INFO L225 Difference]: With dead ends: 781 [2018-10-01 01:14:16,429 INFO L226 Difference]: Without dead ends: 779 [2018-10-01 01:14:16,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 774 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time [2018-10-01 01:14:16,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2018-10-01 01:14:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2018-10-01 01:14:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2018-10-01 01:14:16,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 779 transitions. [2018-10-01 01:14:16,435 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 779 transitions. Word has length 774 [2018-10-01 01:14:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:16,435 INFO L480 AbstractCegarLoop]: Abstraction has 779 states and 779 transitions. [2018-10-01 01:14:16,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 195 states. [2018-10-01 01:14:16,435 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 779 transitions. [2018-10-01 01:14:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2018-10-01 01:14:16,439 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:16,439 INFO L375 BasicCegarLoop]: trace histogram [193, 193, 193, 193, 1, 1, 1, 1, 1, 1] [2018-10-01 01:14:16,439 INFO L423 AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:16,439 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:16,439 INFO L82 PathProgramCache]: Analyzing trace with hash -442624074, now seen corresponding path program 193 times [2018-10-01 01:14:16,439 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:16,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:16,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:16,440 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:16,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 74305 backedges. 0 proven. 74305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:18,638 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:18,638 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:18,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:18,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 74305 backedges. 0 proven. 74305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:20,415 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:20,415 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [195, 195] total 195 [2018-10-01 01:14:20,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 196 states [2018-10-01 01:14:20,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 196 interpolants. [2018-10-01 01:14:20,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:20,418 INFO L87 Difference]: Start difference. First operand 779 states and 779 transitions. Second operand 196 states. [2018-10-01 01:14:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:26,368 INFO L93 Difference]: Finished difference Result 785 states and 785 transitions. [2018-10-01 01:14:26,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2018-10-01 01:14:26,368 INFO L78 Accepts]: Start accepts. Automaton has 196 states. Word has length 778 [2018-10-01 01:14:26,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:26,369 INFO L225 Difference]: With dead ends: 785 [2018-10-01 01:14:26,369 INFO L226 Difference]: Without dead ends: 783 [2018-10-01 01:14:26,370 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:14:26,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2018-10-01 01:14:26,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2018-10-01 01:14:26,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 783 states. [2018-10-01 01:14:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 783 transitions. [2018-10-01 01:14:26,374 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 783 transitions. Word has length 778 [2018-10-01 01:14:26,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:26,374 INFO L480 AbstractCegarLoop]: Abstraction has 783 states and 783 transitions. [2018-10-01 01:14:26,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 196 states. [2018-10-01 01:14:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 783 transitions. [2018-10-01 01:14:26,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2018-10-01 01:14:26,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:26,378 INFO L375 BasicCegarLoop]: trace histogram [194, 194, 194, 194, 1, 1, 1, 1, 1, 1] [2018-10-01 01:14:26,378 INFO L423 AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:26,378 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:26,379 INFO L82 PathProgramCache]: Analyzing trace with hash 386964064, now seen corresponding path program 194 times [2018-10-01 01:14:26,379 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:26,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:26,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:26,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:14:26,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 75078 backedges. 0 proven. 75078 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:28,605 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:28,605 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:28,613 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:14:28,768 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:14:28,768 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:28,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 75078 backedges. 0 proven. 75078 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:30,416 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:30,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [196, 196] total 196 [2018-10-01 01:14:30,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 197 states [2018-10-01 01:14:30,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2018-10-01 01:14:30,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:30,420 INFO L87 Difference]: Start difference. First operand 783 states and 783 transitions. Second operand 197 states. [2018-10-01 01:14:37,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:37,283 INFO L93 Difference]: Finished difference Result 789 states and 789 transitions. [2018-10-01 01:14:37,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-10-01 01:14:37,283 INFO L78 Accepts]: Start accepts. Automaton has 197 states. Word has length 782 [2018-10-01 01:14:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:37,284 INFO L225 Difference]: With dead ends: 789 [2018-10-01 01:14:37,284 INFO L226 Difference]: Without dead ends: 787 [2018-10-01 01:14:37,285 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 977 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:14:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2018-10-01 01:14:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 787. [2018-10-01 01:14:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2018-10-01 01:14:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 787 transitions. [2018-10-01 01:14:37,288 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 787 transitions. Word has length 782 [2018-10-01 01:14:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:37,289 INFO L480 AbstractCegarLoop]: Abstraction has 787 states and 787 transitions. [2018-10-01 01:14:37,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 197 states. [2018-10-01 01:14:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 787 transitions. [2018-10-01 01:14:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2018-10-01 01:14:37,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:37,293 INFO L375 BasicCegarLoop]: trace histogram [195, 195, 195, 195, 1, 1, 1, 1, 1, 1] [2018-10-01 01:14:37,294 INFO L423 AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:37,294 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:37,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1892530186, now seen corresponding path program 195 times [2018-10-01 01:14:37,294 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:37,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:37,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:37,295 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:37,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 75855 backedges. 0 proven. 75855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:39,515 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:39,515 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:39,523 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:14:40,119 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 196 check-sat command(s) [2018-10-01 01:14:40,119 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:40,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 75855 backedges. 0 proven. 75855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:41,764 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:41,764 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [197, 197] total 197 [2018-10-01 01:14:41,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 198 states [2018-10-01 01:14:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2018-10-01 01:14:41,767 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:41,767 INFO L87 Difference]: Start difference. First operand 787 states and 787 transitions. Second operand 198 states. [2018-10-01 01:14:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:45,851 INFO L93 Difference]: Finished difference Result 793 states and 793 transitions. [2018-10-01 01:14:45,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2018-10-01 01:14:45,852 INFO L78 Accepts]: Start accepts. Automaton has 198 states. Word has length 786 [2018-10-01 01:14:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:45,853 INFO L225 Difference]: With dead ends: 793 [2018-10-01 01:14:45,853 INFO L226 Difference]: Without dead ends: 791 [2018-10-01 01:14:45,853 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:14:45,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2018-10-01 01:14:45,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2018-10-01 01:14:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2018-10-01 01:14:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 791 transitions. [2018-10-01 01:14:45,856 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 791 transitions. Word has length 786 [2018-10-01 01:14:45,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:45,857 INFO L480 AbstractCegarLoop]: Abstraction has 791 states and 791 transitions. [2018-10-01 01:14:45,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 198 states. [2018-10-01 01:14:45,857 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 791 transitions. [2018-10-01 01:14:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-10-01 01:14:45,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:45,861 INFO L375 BasicCegarLoop]: trace histogram [196, 196, 196, 196, 1, 1, 1, 1, 1, 1] [2018-10-01 01:14:45,861 INFO L423 AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:45,861 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:45,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1175449780, now seen corresponding path program 196 times [2018-10-01 01:14:45,861 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:45,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:45,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:45,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:45,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 76636 backedges. 0 proven. 76636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:47,968 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:47,968 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:47,976 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:14:48,147 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:14:48,147 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:48,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 76636 backedges. 0 proven. 76636 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:49,893 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:49,893 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 198] total 198 [2018-10-01 01:14:49,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 199 states [2018-10-01 01:14:49,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 199 interpolants. [2018-10-01 01:14:49,896 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:49,896 INFO L87 Difference]: Start difference. First operand 791 states and 791 transitions. Second operand 199 states. [2018-10-01 01:14:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:14:54,376 INFO L93 Difference]: Finished difference Result 797 states and 797 transitions. [2018-10-01 01:14:54,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2018-10-01 01:14:54,377 INFO L78 Accepts]: Start accepts. Automaton has 199 states. Word has length 790 [2018-10-01 01:14:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:14:54,378 INFO L225 Difference]: With dead ends: 797 [2018-10-01 01:14:54,378 INFO L226 Difference]: Without dead ends: 795 [2018-10-01 01:14:54,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:14:54,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2018-10-01 01:14:54,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2018-10-01 01:14:54,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2018-10-01 01:14:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 795 transitions. [2018-10-01 01:14:54,383 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 795 transitions. Word has length 790 [2018-10-01 01:14:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:14:54,384 INFO L480 AbstractCegarLoop]: Abstraction has 795 states and 795 transitions. [2018-10-01 01:14:54,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has 199 states. [2018-10-01 01:14:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 795 transitions. [2018-10-01 01:14:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2018-10-01 01:14:54,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:14:54,389 INFO L375 BasicCegarLoop]: trace histogram [197, 197, 197, 197, 1, 1, 1, 1, 1, 1] [2018-10-01 01:14:54,389 INFO L423 AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:14:54,389 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:14:54,390 INFO L82 PathProgramCache]: Analyzing trace with hash -925776802, now seen corresponding path program 197 times [2018-10-01 01:14:54,390 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:14:54,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:14:54,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:54,391 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:14:54,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:14:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:14:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 77421 backedges. 0 proven. 77421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:56,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:14:56,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:14:56,504 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:14:57,123 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 198 check-sat command(s) [2018-10-01 01:14:57,123 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:14:57,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:14:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 77421 backedges. 0 proven. 77421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:14:58,812 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:14:58,812 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [199, 199] total 199 [2018-10-01 01:14:58,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 200 states [2018-10-01 01:14:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 200 interpolants. [2018-10-01 01:14:58,815 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:14:58,815 INFO L87 Difference]: Start difference. First operand 795 states and 795 transitions. Second operand 200 states. [2018-10-01 01:15:03,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:03,979 INFO L93 Difference]: Finished difference Result 801 states and 801 transitions. [2018-10-01 01:15:03,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2018-10-01 01:15:03,980 INFO L78 Accepts]: Start accepts. Automaton has 200 states. Word has length 794 [2018-10-01 01:15:03,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:03,981 INFO L225 Difference]: With dead ends: 801 [2018-10-01 01:15:03,981 INFO L226 Difference]: Without dead ends: 799 [2018-10-01 01:15:03,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:15:03,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2018-10-01 01:15:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2018-10-01 01:15:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 799 states. [2018-10-01 01:15:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 799 transitions. [2018-10-01 01:15:03,985 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 799 transitions. Word has length 794 [2018-10-01 01:15:03,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:03,985 INFO L480 AbstractCegarLoop]: Abstraction has 799 states and 799 transitions. [2018-10-01 01:15:03,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 200 states. [2018-10-01 01:15:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 799 transitions. [2018-10-01 01:15:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2018-10-01 01:15:03,989 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:03,989 INFO L375 BasicCegarLoop]: trace histogram [198, 198, 198, 198, 1, 1, 1, 1, 1, 1] [2018-10-01 01:15:03,990 INFO L423 AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:03,990 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:03,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1446137080, now seen corresponding path program 198 times [2018-10-01 01:15:03,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:03,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:03,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:03,990 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:03,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 78210 backedges. 0 proven. 78210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:06,073 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:06,073 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:06,081 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:15:06,626 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 199 check-sat command(s) [2018-10-01 01:15:06,626 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:06,635 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 78210 backedges. 0 proven. 78210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:08,298 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:08,298 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [200, 200] total 200 [2018-10-01 01:15:08,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 201 states [2018-10-01 01:15:08,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2018-10-01 01:15:08,301 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:08,301 INFO L87 Difference]: Start difference. First operand 799 states and 799 transitions. Second operand 201 states. [2018-10-01 01:15:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:16,126 INFO L93 Difference]: Finished difference Result 805 states and 805 transitions. [2018-10-01 01:15:16,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2018-10-01 01:15:16,126 INFO L78 Accepts]: Start accepts. Automaton has 201 states. Word has length 798 [2018-10-01 01:15:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:16,127 INFO L225 Difference]: With dead ends: 805 [2018-10-01 01:15:16,127 INFO L226 Difference]: Without dead ends: 803 [2018-10-01 01:15:16,127 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 997 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:15:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2018-10-01 01:15:16,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2018-10-01 01:15:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2018-10-01 01:15:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 803 transitions. [2018-10-01 01:15:16,130 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 803 transitions. Word has length 798 [2018-10-01 01:15:16,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:16,131 INFO L480 AbstractCegarLoop]: Abstraction has 803 states and 803 transitions. [2018-10-01 01:15:16,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 201 states. [2018-10-01 01:15:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 803 transitions. [2018-10-01 01:15:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-10-01 01:15:16,135 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:16,135 INFO L375 BasicCegarLoop]: trace histogram [199, 199, 199, 199, 1, 1, 1, 1, 1, 1] [2018-10-01 01:15:16,135 INFO L423 AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:16,136 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:16,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1199686478, now seen corresponding path program 199 times [2018-10-01 01:15:16,136 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:16,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:16,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:16,137 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:16,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 79003 backedges. 0 proven. 79003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:18,346 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:18,346 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:18,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:18,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 79003 backedges. 0 proven. 79003 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:20,356 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:20,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [201, 201] total 201 [2018-10-01 01:15:20,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 202 states [2018-10-01 01:15:20,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 202 interpolants. [2018-10-01 01:15:20,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:20,359 INFO L87 Difference]: Start difference. First operand 803 states and 803 transitions. Second operand 202 states. [2018-10-01 01:15:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:26,999 INFO L93 Difference]: Finished difference Result 809 states and 809 transitions. [2018-10-01 01:15:26,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2018-10-01 01:15:26,999 INFO L78 Accepts]: Start accepts. Automaton has 202 states. Word has length 802 [2018-10-01 01:15:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:27,000 INFO L225 Difference]: With dead ends: 809 [2018-10-01 01:15:27,000 INFO L226 Difference]: Without dead ends: 807 [2018-10-01 01:15:27,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:15:27,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-10-01 01:15:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2018-10-01 01:15:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-10-01 01:15:27,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 807 transitions. [2018-10-01 01:15:27,004 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 807 transitions. Word has length 802 [2018-10-01 01:15:27,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:27,004 INFO L480 AbstractCegarLoop]: Abstraction has 807 states and 807 transitions. [2018-10-01 01:15:27,004 INFO L481 AbstractCegarLoop]: Interpolant automaton has 202 states. [2018-10-01 01:15:27,004 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 807 transitions. [2018-10-01 01:15:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2018-10-01 01:15:27,008 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:27,008 INFO L375 BasicCegarLoop]: trace histogram [200, 200, 200, 200, 1, 1, 1, 1, 1, 1] [2018-10-01 01:15:27,008 INFO L423 AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:27,009 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:27,009 INFO L82 PathProgramCache]: Analyzing trace with hash -2095193764, now seen corresponding path program 200 times [2018-10-01 01:15:27,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:27,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:27,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:27,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:15:27,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 79800 backedges. 0 proven. 79800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:29,227 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:29,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:29,233 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:15:29,384 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:15:29,385 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:29,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 79800 backedges. 0 proven. 79800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:31,069 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:31,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [202, 202] total 202 [2018-10-01 01:15:31,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 203 states [2018-10-01 01:15:31,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 203 interpolants. [2018-10-01 01:15:31,072 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:31,072 INFO L87 Difference]: Start difference. First operand 807 states and 807 transitions. Second operand 203 states. [2018-10-01 01:15:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:36,102 INFO L93 Difference]: Finished difference Result 813 states and 813 transitions. [2018-10-01 01:15:36,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2018-10-01 01:15:36,102 INFO L78 Accepts]: Start accepts. Automaton has 203 states. Word has length 806 [2018-10-01 01:15:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:36,103 INFO L225 Difference]: With dead ends: 813 [2018-10-01 01:15:36,103 INFO L226 Difference]: Without dead ends: 811 [2018-10-01 01:15:36,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1007 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:15:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2018-10-01 01:15:36,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 811. [2018-10-01 01:15:36,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 811 states. [2018-10-01 01:15:36,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 811 transitions. [2018-10-01 01:15:36,107 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 811 transitions. Word has length 806 [2018-10-01 01:15:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:36,107 INFO L480 AbstractCegarLoop]: Abstraction has 811 states and 811 transitions. [2018-10-01 01:15:36,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 203 states. [2018-10-01 01:15:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 811 transitions. [2018-10-01 01:15:36,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2018-10-01 01:15:36,111 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:36,111 INFO L375 BasicCegarLoop]: trace histogram [201, 201, 201, 201, 1, 1, 1, 1, 1, 1] [2018-10-01 01:15:36,111 INFO L423 AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:36,111 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:36,111 INFO L82 PathProgramCache]: Analyzing trace with hash -156819194, now seen corresponding path program 201 times [2018-10-01 01:15:36,112 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:36,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:36,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:36,112 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:36,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 80601 backedges. 0 proven. 80601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:38,347 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:38,347 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:38,354 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:15:39,003 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 202 check-sat command(s) [2018-10-01 01:15:39,003 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:39,012 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 80601 backedges. 0 proven. 80601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:40,772 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:40,772 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [203, 203] total 203 [2018-10-01 01:15:40,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 204 states [2018-10-01 01:15:40,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 204 interpolants. [2018-10-01 01:15:40,775 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:40,775 INFO L87 Difference]: Start difference. First operand 811 states and 811 transitions. Second operand 204 states. [2018-10-01 01:15:49,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:15:49,106 INFO L93 Difference]: Finished difference Result 817 states and 817 transitions. [2018-10-01 01:15:49,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2018-10-01 01:15:49,106 INFO L78 Accepts]: Start accepts. Automaton has 204 states. Word has length 810 [2018-10-01 01:15:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:15:49,107 INFO L225 Difference]: With dead ends: 817 [2018-10-01 01:15:49,107 INFO L226 Difference]: Without dead ends: 815 [2018-10-01 01:15:49,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:15:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2018-10-01 01:15:49,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2018-10-01 01:15:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 815 states. [2018-10-01 01:15:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 815 transitions. [2018-10-01 01:15:49,111 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 815 transitions. Word has length 810 [2018-10-01 01:15:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:15:49,111 INFO L480 AbstractCegarLoop]: Abstraction has 815 states and 815 transitions. [2018-10-01 01:15:49,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 204 states. [2018-10-01 01:15:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 815 transitions. [2018-10-01 01:15:49,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-10-01 01:15:49,116 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:15:49,116 INFO L375 BasicCegarLoop]: trace histogram [202, 202, 202, 202, 1, 1, 1, 1, 1, 1] [2018-10-01 01:15:49,116 INFO L423 AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:15:49,116 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:15:49,116 INFO L82 PathProgramCache]: Analyzing trace with hash -19629136, now seen corresponding path program 202 times [2018-10-01 01:15:49,116 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:15:49,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:15:49,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:49,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:15:49,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:15:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:15:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 81406 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:51,439 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:15:51,439 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:15:51,446 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-01 01:15:51,618 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-01 01:15:51,618 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:15:51,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:15:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 81406 backedges. 0 proven. 81406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:15:53,314 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:15:53,314 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [204, 204] total 204 [2018-10-01 01:15:53,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 205 states [2018-10-01 01:15:53,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 205 interpolants. [2018-10-01 01:15:53,317 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:15:53,318 INFO L87 Difference]: Start difference. First operand 815 states and 815 transitions. Second operand 205 states. [2018-10-01 01:16:00,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:00,224 INFO L93 Difference]: Finished difference Result 821 states and 821 transitions. [2018-10-01 01:16:00,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2018-10-01 01:16:00,225 INFO L78 Accepts]: Start accepts. Automaton has 205 states. Word has length 814 [2018-10-01 01:16:00,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:00,226 INFO L225 Difference]: With dead ends: 821 [2018-10-01 01:16:00,226 INFO L226 Difference]: Without dead ends: 819 [2018-10-01 01:16:00,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time [2018-10-01 01:16:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-10-01 01:16:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2018-10-01 01:16:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2018-10-01 01:16:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 819 transitions. [2018-10-01 01:16:00,230 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 819 transitions. Word has length 814 [2018-10-01 01:16:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:00,231 INFO L480 AbstractCegarLoop]: Abstraction has 819 states and 819 transitions. [2018-10-01 01:16:00,231 INFO L481 AbstractCegarLoop]: Interpolant automaton has 205 states. [2018-10-01 01:16:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 819 transitions. [2018-10-01 01:16:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2018-10-01 01:16:00,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:00,235 INFO L375 BasicCegarLoop]: trace histogram [203, 203, 203, 203, 1, 1, 1, 1, 1, 1] [2018-10-01 01:16:00,235 INFO L423 AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:00,236 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:00,236 INFO L82 PathProgramCache]: Analyzing trace with hash 639660378, now seen corresponding path program 203 times [2018-10-01 01:16:00,236 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:00,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:00,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:00,237 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:00,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 82215 backedges. 0 proven. 82215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:02,446 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:02,446 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:02,452 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-01 01:16:03,108 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 204 check-sat command(s) [2018-10-01 01:16:03,109 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:03,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 82215 backedges. 0 proven. 82215 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:04,813 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:04,813 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [205, 205] total 205 [2018-10-01 01:16:04,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 206 states [2018-10-01 01:16:04,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 206 interpolants. [2018-10-01 01:16:04,816 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:04,816 INFO L87 Difference]: Start difference. First operand 819 states and 819 transitions. Second operand 206 states. [2018-10-01 01:16:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:09,616 INFO L93 Difference]: Finished difference Result 825 states and 825 transitions. [2018-10-01 01:16:09,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2018-10-01 01:16:09,616 INFO L78 Accepts]: Start accepts. Automaton has 206 states. Word has length 818 [2018-10-01 01:16:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:09,618 INFO L225 Difference]: With dead ends: 825 [2018-10-01 01:16:09,618 INFO L226 Difference]: Without dead ends: 823 [2018-10-01 01:16:09,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1022 GetRequests, 818 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s Time [2018-10-01 01:16:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2018-10-01 01:16:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 823. [2018-10-01 01:16:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-10-01 01:16:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 823 transitions. [2018-10-01 01:16:09,622 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 823 transitions. Word has length 818 [2018-10-01 01:16:09,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:09,623 INFO L480 AbstractCegarLoop]: Abstraction has 823 states and 823 transitions. [2018-10-01 01:16:09,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 206 states. [2018-10-01 01:16:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 823 transitions. [2018-10-01 01:16:09,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2018-10-01 01:16:09,627 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:09,627 INFO L375 BasicCegarLoop]: trace histogram [204, 204, 204, 204, 1, 1, 1, 1, 1, 1] [2018-10-01 01:16:09,628 INFO L423 AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:09,628 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:09,628 INFO L82 PathProgramCache]: Analyzing trace with hash 902136324, now seen corresponding path program 204 times [2018-10-01 01:16:09,628 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:09,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:09,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:09,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:09,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 83028 backedges. 0 proven. 83028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:11,876 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:11,876 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:11,884 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-01 01:16:12,455 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 205 check-sat command(s) [2018-10-01 01:16:12,455 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:12,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:14,172 INFO L134 CoverageAnalysis]: Checked inductivity of 83028 backedges. 0 proven. 83028 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:14,193 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:14,193 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [206, 206] total 206 [2018-10-01 01:16:14,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 207 states [2018-10-01 01:16:14,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 207 interpolants. [2018-10-01 01:16:14,196 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:14,196 INFO L87 Difference]: Start difference. First operand 823 states and 823 transitions. Second operand 207 states. [2018-10-01 01:16:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:19,013 INFO L93 Difference]: Finished difference Result 829 states and 829 transitions. [2018-10-01 01:16:19,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2018-10-01 01:16:19,013 INFO L78 Accepts]: Start accepts. Automaton has 207 states. Word has length 822 [2018-10-01 01:16:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:19,014 INFO L225 Difference]: With dead ends: 829 [2018-10-01 01:16:19,014 INFO L226 Difference]: Without dead ends: 827 [2018-10-01 01:16:19,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time [2018-10-01 01:16:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2018-10-01 01:16:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2018-10-01 01:16:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2018-10-01 01:16:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 827 transitions. [2018-10-01 01:16:19,018 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 827 transitions. Word has length 822 [2018-10-01 01:16:19,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:19,019 INFO L480 AbstractCegarLoop]: Abstraction has 827 states and 827 transitions. [2018-10-01 01:16:19,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 207 states. [2018-10-01 01:16:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 827 transitions. [2018-10-01 01:16:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2018-10-01 01:16:19,023 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:19,023 INFO L375 BasicCegarLoop]: trace histogram [205, 205, 205, 205, 1, 1, 1, 1, 1, 1] [2018-10-01 01:16:19,023 INFO L423 AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:19,023 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:19,023 INFO L82 PathProgramCache]: Analyzing trace with hash -708956754, now seen corresponding path program 205 times [2018-10-01 01:16:19,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:19,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:19,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:19,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:19,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 83845 backedges. 0 proven. 83845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:21,422 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:21,422 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:21,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:21,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:23,355 INFO L134 CoverageAnalysis]: Checked inductivity of 83845 backedges. 0 proven. 83845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:23,377 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:23,377 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [207, 207] total 207 [2018-10-01 01:16:23,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 208 states [2018-10-01 01:16:23,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 208 interpolants. [2018-10-01 01:16:23,380 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:23,380 INFO L87 Difference]: Start difference. First operand 827 states and 827 transitions. Second operand 208 states. [2018-10-01 01:16:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:30,134 INFO L93 Difference]: Finished difference Result 833 states and 833 transitions. [2018-10-01 01:16:30,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2018-10-01 01:16:30,134 INFO L78 Accepts]: Start accepts. Automaton has 208 states. Word has length 826 [2018-10-01 01:16:30,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:30,135 INFO L225 Difference]: With dead ends: 833 [2018-10-01 01:16:30,135 INFO L226 Difference]: Without dead ends: 831 [2018-10-01 01:16:30,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 826 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 01:16:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2018-10-01 01:16:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2018-10-01 01:16:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 831 states. [2018-10-01 01:16:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 831 transitions. [2018-10-01 01:16:30,139 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 831 transitions. Word has length 826 [2018-10-01 01:16:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:30,140 INFO L480 AbstractCegarLoop]: Abstraction has 831 states and 831 transitions. [2018-10-01 01:16:30,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 208 states. [2018-10-01 01:16:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 831 transitions. [2018-10-01 01:16:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2018-10-01 01:16:30,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:30,144 INFO L375 BasicCegarLoop]: trace histogram [206, 206, 206, 206, 1, 1, 1, 1, 1, 1] [2018-10-01 01:16:30,144 INFO L423 AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:30,144 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:30,145 INFO L82 PathProgramCache]: Analyzing trace with hash 751105112, now seen corresponding path program 206 times [2018-10-01 01:16:30,145 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:30,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:30,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:30,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-01 01:16:30,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:32,511 INFO L134 CoverageAnalysis]: Checked inductivity of 84666 backedges. 0 proven. 84666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:32,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:32,511 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:32,519 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-01 01:16:32,677 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-01 01:16:32,677 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:32,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-01 01:16:34,411 INFO L134 CoverageAnalysis]: Checked inductivity of 84666 backedges. 0 proven. 84666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:34,431 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-01 01:16:34,432 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [208, 208] total 208 [2018-10-01 01:16:34,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 209 states [2018-10-01 01:16:34,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 209 interpolants. [2018-10-01 01:16:34,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-10-01 01:16:34,435 INFO L87 Difference]: Start difference. First operand 831 states and 831 transitions. Second operand 209 states. [2018-10-01 01:16:40,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-01 01:16:40,400 INFO L93 Difference]: Finished difference Result 837 states and 837 transitions. [2018-10-01 01:16:40,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2018-10-01 01:16:40,400 INFO L78 Accepts]: Start accepts. Automaton has 209 states. Word has length 830 [2018-10-01 01:16:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-01 01:16:40,401 INFO L225 Difference]: With dead ends: 837 [2018-10-01 01:16:40,401 INFO L226 Difference]: Without dead ends: 835 [2018-10-01 01:16:40,401 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 830 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s Time [2018-10-01 01:16:40,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2018-10-01 01:16:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 835. [2018-10-01 01:16:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 835 states. [2018-10-01 01:16:40,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 835 transitions. [2018-10-01 01:16:40,405 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 835 transitions. Word has length 830 [2018-10-01 01:16:40,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-01 01:16:40,405 INFO L480 AbstractCegarLoop]: Abstraction has 835 states and 835 transitions. [2018-10-01 01:16:40,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 209 states. [2018-10-01 01:16:40,405 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 835 transitions. [2018-10-01 01:16:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2018-10-01 01:16:40,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-01 01:16:40,409 INFO L375 BasicCegarLoop]: trace histogram [207, 207, 207, 207, 1, 1, 1, 1, 1, 1] [2018-10-01 01:16:40,410 INFO L423 AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-10-01 01:16:40,410 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-01 01:16:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2141956606, now seen corresponding path program 207 times [2018-10-01 01:16:40,410 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-01 01:16:40,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-01 01:16:40,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:40,410 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-01 01:16:40,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-01 01:16:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-01 01:16:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 85491 backedges. 0 proven. 85491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-01 01:16:42,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-01 01:16:42,595 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:42,602 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-01 01:16:43,267 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 208 check-sat command(s) [2018-10-01 01:16:43,267 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-01 01:16:43,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-10-01 01:16:43,927 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-01 01:16:44,128 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-01 01:16:44,128 WARN L549 AbstractCegarLoop]: Verification canceled [2018-10-01 01:16:44,134 WARN L206 ceAbstractionStarter]: Timeout [2018-10-01 01:16:44,135 INFO L202 PluginConnector]: Adding new model Luxembourg-ArraysIntegefied.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.10 01:16:44 BoogieIcfgContainer [2018-10-01 01:16:44,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-01 01:16:44,136 INFO L168 Benchmark]: Toolchain (without parser) took 803984.90 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 202.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-01 01:16:44,137 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:16:44,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:16:44,139 INFO L168 Benchmark]: Boogie Preprocessor took 27.07 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-01 01:16:44,139 INFO L168 Benchmark]: RCFGBuilder took 348.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-01 01:16:44,139 INFO L168 Benchmark]: TraceAbstraction took 803561.02 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 183.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-01 01:16:44,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.07 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 348.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 803561.02 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 183.2 MB). Peak memory consumption was 1.3 GB. 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 835 with TraceHistMax 207, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 803.4s OverallTime, 209 OverallIterations, 207 TraceHistogramMax, 380.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1872 SDtfs, 2166 SDslu, 70653 SDs, 0 SdLazy, 27808 SolverSat, 721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108051 GetRequests, 86522 SyntacticMatches, 0 SemanticMatches, 21529 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 283.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=835occurred in iteration=208, 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: 0.7s AutomataMinimizationTime, 208 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.8s SsaConstructionTime, 45.4s SatisfiabilityAnalysisTime, 333.1s InterpolantComputationTime, 173052 NumberOfCodeBlocks, 173052 NumberOfCodeBlocksAsserted, 11057 NumberOfCheckSat, 172638 ConstructedInterpolants, 0 QuantifiedInterpolants, 286581130 SizeOfPredicates, 206 NumberOfNonLiveVariables, 130398 ConjunctsInSsa, 21733 ConjunctsInUnsatCore, 414 InterpolantComputations, 2 PerfectInterpolantSequences, 0/11698122 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-0-2018-10-01_01-16-44-150.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-0-2018-10-01_01-16-44-150.csv Completed graceful shutdown