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/20170304-DifficultPathPrograms/nested.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cc990c [2018-09-30 20:44:41,920 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 20:44:41,924 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 20:44:41,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-09-30 20:44:41,974 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-30 20:44:41,997 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 20:44:41,997 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 20:44:41,998 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 20:44:41,998 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 20:44:41,999 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 20:44:42,000 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 20:44:42,000 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 20:44:42,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 20:44:42,000 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 20:44:42,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 20:44:42,001 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 20:44:42,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 20:44:42,001 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 20:44:42,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 20:44:42,002 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 20:44:42,003 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 20:44:42,003 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 20:44:42,003 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 20:44:42,004 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 20:44:42,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 20:44:42,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 20:44:42,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 20:44:42,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:44:42,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 20:44:42,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 20:44:42,006 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 20:44:42,006 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 20:44:42,006 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 20:44:42,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 20:44:42,007 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 20:44:42,007 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 20:44:42,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 20:44:42,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 20:44:42,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 20:44:42,078 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 20:44:42,079 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 20:44:42,080 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl [2018-09-30 20:44:42,080 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/nested.i_4.bpl' [2018-09-30 20:44:42,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 20:44:42,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 20:44:42,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 20:44:42,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 20:44:42,137 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 20:44:42,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,170 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 20:44:42,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 20:44:42,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 20:44:42,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 20:44:42,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... [2018-09-30 20:44:42,202 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 20:44:42,203 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 20:44:42,203 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 20:44:42,203 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 20:44:42,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 20:44:42,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 20:44:42,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 20:44:42,584 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 20:44:42,585 INFO L202 PluginConnector]: Adding new model nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:44:42 BoogieIcfgContainer [2018-09-30 20:44:42,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 20:44:42,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 20:44:42,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 20:44:42,592 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 20:44:42,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 08:44:42" (1/2) ... [2018-09-30 20:44:42,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c1a3df and model type nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 08:44:42, skipping insertion in model container [2018-09-30 20:44:42,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 08:44:42" (2/2) ... [2018-09-30 20:44:42,596 INFO L112 eAbstractionObserver]: Analyzing ICFG nested.i_4.bpl [2018-09-30 20:44:42,606 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 20:44:42,618 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 20:44:42,663 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 20:44:42,664 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 20:44:42,665 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 20:44:42,665 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 20:44:42,665 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 20:44:42,665 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 20:44:42,665 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 20:44:42,666 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 20:44:42,666 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 20:44:42,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-30 20:44:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 20:44:42,685 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:42,686 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 20:44:42,687 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:42,694 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:42,694 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-30 20:44:42,697 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:42,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:42,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:42,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:42,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:44:42,856 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:44:42,857 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 20:44:42,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 20:44:42,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 20:44:42,877 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:42,879 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-30 20:44:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:43,087 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-09-30 20:44:43,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 20:44:43,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-30 20:44:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:43,101 INFO L225 Difference]: With dead ends: 17 [2018-09-30 20:44:43,101 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 20:44:43,105 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:44:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 20:44:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-09-30 20:44:43,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 20:44:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-09-30 20:44:43,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-09-30 20:44:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:43,143 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-09-30 20:44:43,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 20:44:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-09-30 20:44:43,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-30 20:44:43,144 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:43,144 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:44:43,145 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:43,145 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:43,145 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-09-30 20:44:43,145 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:43,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:43,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:43,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:43,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:44:43,230 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:44:43,230 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-30 20:44:43,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 20:44:43,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 20:44:43,232 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:43,232 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-09-30 20:44:43,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:43,349 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-09-30 20:44:43,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 20:44:43,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-09-30 20:44:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:43,351 INFO L225 Difference]: With dead ends: 17 [2018-09-30 20:44:43,351 INFO L226 Difference]: Without dead ends: 11 [2018-09-30 20:44:43,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 20:44:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-30 20:44:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-30 20:44:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 20:44:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-09-30 20:44:43,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-09-30 20:44:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:43,356 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-09-30 20:44:43,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 20:44:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-09-30 20:44:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 20:44:43,357 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:43,357 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 20:44:43,357 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:43,358 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:43,358 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-09-30 20:44:43,358 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:43,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:43,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:43,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:43,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:43,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:44:43,462 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:43,463 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:43,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:43,505 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:44:43,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:43,847 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-09-30 20:44:43,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-30 20:44:43,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-30 20:44:43,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:43,848 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 7 states. [2018-09-30 20:44:44,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:44,224 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-09-30 20:44:44,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 20:44:44,226 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2018-09-30 20:44:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:44,226 INFO L225 Difference]: With dead ends: 21 [2018-09-30 20:44:44,226 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 20:44:44,227 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time [2018-09-30 20:44:44,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 20:44:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-30 20:44:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-30 20:44:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-09-30 20:44:44,232 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-09-30 20:44:44,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:44,232 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-09-30 20:44:44,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-30 20:44:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-09-30 20:44:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-30 20:44:44,233 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:44,234 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2018-09-30 20:44:44,234 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:44,235 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:44,235 INFO L82 PathProgramCache]: Analyzing trace with hash -928778543, now seen corresponding path program 2 times [2018-09-30 20:44:44,235 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:44,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:44,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:44,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:44,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 20:44:44,367 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:44,368 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:44,381 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:44:44,410 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:44:44,411 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:44,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-30 20:44:44,609 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:44,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 7 [2018-09-30 20:44:44,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 20:44:44,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 20:44:44,612 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:44,612 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-09-30 20:44:45,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:45,629 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-09-30 20:44:45,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-30 20:44:45,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-09-30 20:44:45,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:45,634 INFO L225 Difference]: With dead ends: 43 [2018-09-30 20:44:45,634 INFO L226 Difference]: Without dead ends: 33 [2018-09-30 20:44:45,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time [2018-09-30 20:44:45,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-30 20:44:45,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-09-30 20:44:45,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-30 20:44:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-09-30 20:44:45,643 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2018-09-30 20:44:45,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:45,643 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-09-30 20:44:45,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 20:44:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-09-30 20:44:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-30 20:44:45,644 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:45,645 INFO L375 BasicCegarLoop]: trace histogram [8, 6, 3, 2, 2, 1, 1, 1] [2018-09-30 20:44:45,645 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:45,645 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1778757007, now seen corresponding path program 3 times [2018-09-30 20:44:45,646 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:45,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:45,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:45,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:45,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:45,754 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-09-30 20:44:45,754 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:45,754 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:45,763 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:44:45,775 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-09-30 20:44:45,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:45,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-09-30 20:44:45,920 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:45,921 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9 [2018-09-30 20:44:45,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-30 20:44:45,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-30 20:44:45,922 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:45,922 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 10 states. [2018-09-30 20:44:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:46,831 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2018-09-30 20:44:46,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-30 20:44:46,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2018-09-30 20:44:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:46,834 INFO L225 Difference]: With dead ends: 65 [2018-09-30 20:44:46,834 INFO L226 Difference]: Without dead ends: 51 [2018-09-30 20:44:46,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:44:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-30 20:44:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2018-09-30 20:44:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-09-30 20:44:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-09-30 20:44:46,847 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 24 [2018-09-30 20:44:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:46,847 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-09-30 20:44:46,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-30 20:44:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-09-30 20:44:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-30 20:44:46,849 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:46,849 INFO L375 BasicCegarLoop]: trace histogram [15, 12, 4, 3, 3, 1, 1, 1] [2018-09-30 20:44:46,849 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:46,849 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:46,849 INFO L82 PathProgramCache]: Analyzing trace with hash 209827969, now seen corresponding path program 4 times [2018-09-30 20:44:46,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:46,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:46,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:46,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:46,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:46,979 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-09-30 20:44:46,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:46,980 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:46,988 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:44:47,021 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:44:47,021 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:47,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 106 proven. 20 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-09-30 20:44:47,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:47,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-09-30 20:44:47,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-30 20:44:47,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-30 20:44:47,132 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:47,132 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 13 states. [2018-09-30 20:44:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:47,307 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-09-30 20:44:47,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 20:44:47,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-09-30 20:44:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:47,314 INFO L225 Difference]: With dead ends: 75 [2018-09-30 20:44:47,314 INFO L226 Difference]: Without dead ends: 47 [2018-09-30 20:44:47,314 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time [2018-09-30 20:44:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-30 20:44:47,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-09-30 20:44:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-30 20:44:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-09-30 20:44:47,332 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 40 [2018-09-30 20:44:47,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:47,332 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-09-30 20:44:47,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-30 20:44:47,333 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-09-30 20:44:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-09-30 20:44:47,334 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:47,334 INFO L375 BasicCegarLoop]: trace histogram [18, 15, 4, 3, 3, 1, 1, 1] [2018-09-30 20:44:47,334 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:47,335 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:47,335 INFO L82 PathProgramCache]: Analyzing trace with hash -254509681, now seen corresponding path program 5 times [2018-09-30 20:44:47,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:47,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:47,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:47,336 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:47,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:47,521 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-09-30 20:44:47,521 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:47,522 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:47,533 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:44:47,601 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-09-30 20:44:47,601 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:47,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 150 proven. 30 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-09-30 20:44:47,953 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:47,953 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-09-30 20:44:47,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-30 20:44:47,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-30 20:44:47,954 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:47,954 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 15 states. [2018-09-30 20:44:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:48,072 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2018-09-30 20:44:48,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:44:48,074 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2018-09-30 20:44:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:48,075 INFO L225 Difference]: With dead ends: 85 [2018-09-30 20:44:48,075 INFO L226 Difference]: Without dead ends: 53 [2018-09-30 20:44:48,075 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:44:48,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-30 20:44:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-30 20:44:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-30 20:44:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-09-30 20:44:48,089 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 46 [2018-09-30 20:44:48,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:48,090 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-09-30 20:44:48,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-30 20:44:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-09-30 20:44:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-09-30 20:44:48,092 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:48,092 INFO L375 BasicCegarLoop]: trace histogram [21, 18, 4, 3, 3, 1, 1, 1] [2018-09-30 20:44:48,092 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:48,092 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:48,093 INFO L82 PathProgramCache]: Analyzing trace with hash -996261859, now seen corresponding path program 6 times [2018-09-30 20:44:48,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:48,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:48,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:48,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:48,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:48,251 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 202 proven. 42 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-09-30 20:44:48,252 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:48,252 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:48,260 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:44:48,277 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-09-30 20:44:48,277 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:48,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-09-30 20:44:48,680 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:48,680 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 13 [2018-09-30 20:44:48,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:44:48,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:44:48,681 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:48,681 INFO L87 Difference]: Start difference. First operand 53 states and 56 transitions. Second operand 14 states. [2018-09-30 20:44:50,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:50,254 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2018-09-30 20:44:50,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-09-30 20:44:50,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2018-09-30 20:44:50,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:50,255 INFO L225 Difference]: With dead ends: 129 [2018-09-30 20:44:50,256 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 20:44:50,256 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time [2018-09-30 20:44:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 20:44:50,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-09-30 20:44:50,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-09-30 20:44:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2018-09-30 20:44:50,274 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2018-09-30 20:44:50,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:50,274 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2018-09-30 20:44:50,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:44:50,274 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2018-09-30 20:44:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-09-30 20:44:50,277 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:50,277 INFO L375 BasicCegarLoop]: trace histogram [32, 28, 5, 4, 4, 1, 1, 1] [2018-09-30 20:44:50,277 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:50,277 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash -252111625, now seen corresponding path program 7 times [2018-09-30 20:44:50,278 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:50,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:50,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:50,279 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:50,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:50,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-09-30 20:44:50,965 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:50,965 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:50,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:51,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 392 proven. 56 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2018-09-30 20:44:51,527 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:51,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-09-30 20:44:51,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-30 20:44:51,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-30 20:44:51,528 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:51,528 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 19 states. [2018-09-30 20:44:51,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:51,798 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2018-09-30 20:44:51,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:44:51,800 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 76 [2018-09-30 20:44:51,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:51,801 INFO L225 Difference]: With dead ends: 143 [2018-09-30 20:44:51,801 INFO L226 Difference]: Without dead ends: 85 [2018-09-30 20:44:51,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s Time [2018-09-30 20:44:51,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-30 20:44:51,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-09-30 20:44:51,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-09-30 20:44:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2018-09-30 20:44:51,819 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 76 [2018-09-30 20:44:51,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:51,819 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2018-09-30 20:44:51,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-30 20:44:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2018-09-30 20:44:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-09-30 20:44:51,821 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:51,821 INFO L375 BasicCegarLoop]: trace histogram [36, 32, 5, 4, 4, 1, 1, 1] [2018-09-30 20:44:51,821 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:51,822 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:51,822 INFO L82 PathProgramCache]: Analyzing trace with hash 771511391, now seen corresponding path program 8 times [2018-09-30 20:44:51,822 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:51,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:51,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:51,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:51,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-09-30 20:44:52,081 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:52,081 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:52,096 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:44:52,168 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:44:52,169 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:52,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1280 backedges. 494 proven. 72 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2018-09-30 20:44:52,506 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:52,506 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-09-30 20:44:52,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-09-30 20:44:52,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-09-30 20:44:52,507 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:52,507 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 21 states. [2018-09-30 20:44:52,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:52,712 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2018-09-30 20:44:52,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-30 20:44:52,712 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 84 [2018-09-30 20:44:52,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:52,713 INFO L225 Difference]: With dead ends: 157 [2018-09-30 20:44:52,713 INFO L226 Difference]: Without dead ends: 93 [2018-09-30 20:44:52,714 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:44:52,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-09-30 20:44:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-09-30 20:44:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-09-30 20:44:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2018-09-30 20:44:52,730 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 84 [2018-09-30 20:44:52,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:52,731 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2018-09-30 20:44:52,731 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-09-30 20:44:52,731 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2018-09-30 20:44:52,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-09-30 20:44:52,732 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:52,732 INFO L375 BasicCegarLoop]: trace histogram [40, 36, 5, 4, 4, 1, 1, 1] [2018-09-30 20:44:52,733 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:52,733 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:52,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1630563271, now seen corresponding path program 9 times [2018-09-30 20:44:52,733 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:52,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:52,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:52,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:52,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-09-30 20:44:52,881 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:52,881 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:52,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:44:52,941 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-09-30 20:44:52,941 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:52,945 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 608 proven. 90 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2018-09-30 20:44:53,311 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:53,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2018-09-30 20:44:53,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-09-30 20:44:53,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-09-30 20:44:53,312 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:53,312 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 23 states. [2018-09-30 20:44:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:53,641 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2018-09-30 20:44:53,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:44:53,641 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2018-09-30 20:44:53,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:53,642 INFO L225 Difference]: With dead ends: 171 [2018-09-30 20:44:53,642 INFO L226 Difference]: Without dead ends: 101 [2018-09-30 20:44:53,643 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:44:53,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-09-30 20:44:53,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-09-30 20:44:53,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-09-30 20:44:53,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2018-09-30 20:44:53,661 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 92 [2018-09-30 20:44:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:53,661 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2018-09-30 20:44:53,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-09-30 20:44:53,662 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2018-09-30 20:44:53,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-09-30 20:44:53,663 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:53,663 INFO L375 BasicCegarLoop]: trace histogram [44, 40, 5, 4, 4, 1, 1, 1] [2018-09-30 20:44:53,664 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:53,664 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:53,664 INFO L82 PathProgramCache]: Analyzing trace with hash -220374225, now seen corresponding path program 10 times [2018-09-30 20:44:53,664 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:53,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:53,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:53,665 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:53,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-09-30 20:44:53,799 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:53,800 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:53,807 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-30 20:44:53,861 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-30 20:44:53,861 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:53,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1912 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 440 trivial. 0 not checked. [2018-09-30 20:44:54,104 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:54,104 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2018-09-30 20:44:54,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-30 20:44:54,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-30 20:44:54,105 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:54,105 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 12 states. [2018-09-30 20:44:54,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:54,290 INFO L93 Difference]: Finished difference Result 149 states and 155 transitions. [2018-09-30 20:44:54,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 20:44:54,293 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 100 [2018-09-30 20:44:54,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:54,295 INFO L225 Difference]: With dead ends: 149 [2018-09-30 20:44:54,295 INFO L226 Difference]: Without dead ends: 147 [2018-09-30 20:44:54,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time [2018-09-30 20:44:54,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-09-30 20:44:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2018-09-30 20:44:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-09-30 20:44:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2018-09-30 20:44:54,316 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 100 [2018-09-30 20:44:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:54,316 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2018-09-30 20:44:54,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-30 20:44:54,317 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2018-09-30 20:44:54,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-09-30 20:44:54,318 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:54,319 INFO L375 BasicCegarLoop]: trace histogram [55, 50, 6, 5, 5, 1, 1, 1] [2018-09-30 20:44:54,319 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:54,319 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:54,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1446024969, now seen corresponding path program 11 times [2018-09-30 20:44:54,319 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:54,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:54,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:54,320 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:54,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-09-30 20:44:54,723 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:54,723 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:54,730 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-30 20:44:54,809 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-09-30 20:44:54,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:54,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3000 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2018-09-30 20:44:55,223 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:55,223 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-09-30 20:44:55,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-30 20:44:55,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-30 20:44:55,224 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:55,224 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 14 states. [2018-09-30 20:44:55,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:55,352 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2018-09-30 20:44:55,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-30 20:44:55,360 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2018-09-30 20:44:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:55,361 INFO L225 Difference]: With dead ends: 173 [2018-09-30 20:44:55,361 INFO L226 Difference]: Without dead ends: 171 [2018-09-30 20:44:55,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time [2018-09-30 20:44:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-09-30 20:44:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2018-09-30 20:44:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-09-30 20:44:55,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 155 transitions. [2018-09-30 20:44:55,391 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 155 transitions. Word has length 124 [2018-09-30 20:44:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:55,391 INFO L480 AbstractCegarLoop]: Abstraction has 149 states and 155 transitions. [2018-09-30 20:44:55,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-30 20:44:55,391 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 155 transitions. [2018-09-30 20:44:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-30 20:44:55,393 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:55,393 INFO L375 BasicCegarLoop]: trace histogram [66, 60, 7, 6, 6, 1, 1, 1] [2018-09-30 20:44:55,394 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:55,394 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:55,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1667523811, now seen corresponding path program 12 times [2018-09-30 20:44:55,394 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:55,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:55,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:55,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:55,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-09-30 20:44:55,629 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:55,629 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:55,637 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-30 20:44:55,709 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2018-09-30 20:44:55,709 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:55,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4332 backedges. 0 proven. 3672 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2018-09-30 20:44:56,090 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:56,090 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-09-30 20:44:56,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-30 20:44:56,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-30 20:44:56,091 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:56,091 INFO L87 Difference]: Start difference. First operand 149 states and 155 transitions. Second operand 16 states. [2018-09-30 20:44:56,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:56,296 INFO L93 Difference]: Finished difference Result 197 states and 205 transitions. [2018-09-30 20:44:56,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-30 20:44:56,297 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 148 [2018-09-30 20:44:56,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:56,298 INFO L225 Difference]: With dead ends: 197 [2018-09-30 20:44:56,298 INFO L226 Difference]: Without dead ends: 195 [2018-09-30 20:44:56,299 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time [2018-09-30 20:44:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-09-30 20:44:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 173. [2018-09-30 20:44:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2018-09-30 20:44:56,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 180 transitions. [2018-09-30 20:44:56,325 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 180 transitions. Word has length 148 [2018-09-30 20:44:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:56,326 INFO L480 AbstractCegarLoop]: Abstraction has 173 states and 180 transitions. [2018-09-30 20:44:56,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-30 20:44:56,326 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 180 transitions. [2018-09-30 20:44:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-09-30 20:44:56,328 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:56,328 INFO L375 BasicCegarLoop]: trace histogram [77, 70, 8, 7, 7, 1, 1, 1] [2018-09-30 20:44:56,328 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:56,328 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:56,329 INFO L82 PathProgramCache]: Analyzing trace with hash 107136189, now seen corresponding path program 13 times [2018-09-30 20:44:56,329 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:56,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:56,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:56,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:56,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-09-30 20:44:56,626 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:56,626 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:56,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:56,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:57,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5908 backedges. 0 proven. 5138 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-09-30 20:44:57,185 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:57,185 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2018-09-30 20:44:57,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-30 20:44:57,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-30 20:44:57,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:57,186 INFO L87 Difference]: Start difference. First operand 173 states and 180 transitions. Second operand 18 states. [2018-09-30 20:44:57,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:57,386 INFO L93 Difference]: Finished difference Result 221 states and 230 transitions. [2018-09-30 20:44:57,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-30 20:44:57,392 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 172 [2018-09-30 20:44:57,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:57,393 INFO L225 Difference]: With dead ends: 221 [2018-09-30 20:44:57,393 INFO L226 Difference]: Without dead ends: 219 [2018-09-30 20:44:57,394 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:44:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-09-30 20:44:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 197. [2018-09-30 20:44:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-09-30 20:44:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 205 transitions. [2018-09-30 20:44:57,437 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 205 transitions. Word has length 172 [2018-09-30 20:44:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:57,438 INFO L480 AbstractCegarLoop]: Abstraction has 197 states and 205 transitions. [2018-09-30 20:44:57,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-09-30 20:44:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 205 transitions. [2018-09-30 20:44:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-09-30 20:44:57,440 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:57,440 INFO L375 BasicCegarLoop]: trace histogram [88, 80, 9, 8, 8, 1, 1, 1] [2018-09-30 20:44:57,441 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:57,441 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1927956841, now seen corresponding path program 14 times [2018-09-30 20:44:57,441 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:57,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:57,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:57,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 20:44:57,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-09-30 20:44:58,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:58,304 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:58,313 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 20:44:58,411 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 20:44:58,411 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:58,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:44:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7728 backedges. 0 proven. 6848 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2018-09-30 20:44:58,990 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:44:58,990 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2018-09-30 20:44:58,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-09-30 20:44:58,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-09-30 20:44:58,991 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:44:58,991 INFO L87 Difference]: Start difference. First operand 197 states and 205 transitions. Second operand 20 states. [2018-09-30 20:44:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:44:59,199 INFO L93 Difference]: Finished difference Result 245 states and 255 transitions. [2018-09-30 20:44:59,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-30 20:44:59,200 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 196 [2018-09-30 20:44:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:44:59,202 INFO L225 Difference]: With dead ends: 245 [2018-09-30 20:44:59,202 INFO L226 Difference]: Without dead ends: 243 [2018-09-30 20:44:59,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time [2018-09-30 20:44:59,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-09-30 20:44:59,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 221. [2018-09-30 20:44:59,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2018-09-30 20:44:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 230 transitions. [2018-09-30 20:44:59,241 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 230 transitions. Word has length 196 [2018-09-30 20:44:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:44:59,241 INFO L480 AbstractCegarLoop]: Abstraction has 221 states and 230 transitions. [2018-09-30 20:44:59,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-09-30 20:44:59,242 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 230 transitions. [2018-09-30 20:44:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-30 20:44:59,244 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:44:59,244 INFO L375 BasicCegarLoop]: trace histogram [99, 90, 10, 9, 9, 1, 1, 1] [2018-09-30 20:44:59,245 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:44:59,245 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:44:59,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1486407055, now seen corresponding path program 15 times [2018-09-30 20:44:59,245 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:44:59,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:44:59,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:59,246 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:44:59,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:44:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:44:59,511 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-09-30 20:44:59,511 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 20:44:59,511 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 20:44:59,520 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-30 20:44:59,670 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 50 check-sat command(s) [2018-09-30 20:44:59,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 20:44:59,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 20:45:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9792 backedges. 0 proven. 8802 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2018-09-30 20:45:00,252 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 20:45:00,252 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2018-09-30 20:45:00,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-09-30 20:45:00,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-09-30 20:45:00,253 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:45:00,253 INFO L87 Difference]: Start difference. First operand 221 states and 230 transitions. Second operand 22 states. [2018-09-30 20:45:00,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:45:00,523 INFO L93 Difference]: Finished difference Result 269 states and 280 transitions. [2018-09-30 20:45:00,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-30 20:45:00,524 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 220 [2018-09-30 20:45:00,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:45:00,525 INFO L225 Difference]: With dead ends: 269 [2018-09-30 20:45:00,526 INFO L226 Difference]: Without dead ends: 267 [2018-09-30 20:45:00,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time [2018-09-30 20:45:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2018-09-30 20:45:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 245. [2018-09-30 20:45:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2018-09-30 20:45:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 255 transitions. [2018-09-30 20:45:00,572 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 255 transitions. Word has length 220 [2018-09-30 20:45:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:45:00,572 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 255 transitions. [2018-09-30 20:45:00,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-09-30 20:45:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 255 transitions. [2018-09-30 20:45:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-09-30 20:45:00,574 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 20:45:00,574 INFO L375 BasicCegarLoop]: trace histogram [110, 100, 11, 10, 10, 1, 1, 1] [2018-09-30 20:45:00,574 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 20:45:00,575 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 20:45:00,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1732333643, now seen corresponding path program 16 times [2018-09-30 20:45:00,575 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 20:45:00,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 20:45:00,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:45:00,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-30 20:45:00,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 20:45:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 20:45:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12100 backedges. 12082 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-30 20:45:02,846 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 20:45:02,846 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [102] imperfect sequences [] total 102 [2018-09-30 20:45:02,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2018-09-30 20:45:02,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2018-09-30 20:45:02,848 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 20:45:02,848 INFO L87 Difference]: Start difference. First operand 245 states and 255 transitions. Second operand 103 states. [2018-09-30 20:45:06,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 20:45:06,910 INFO L93 Difference]: Finished difference Result 10235 states and 10695 transitions. [2018-09-30 20:45:06,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2018-09-30 20:45:06,910 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 244 [2018-09-30 20:45:06,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 20:45:06,911 INFO L225 Difference]: With dead ends: 10235 [2018-09-30 20:45:06,911 INFO L226 Difference]: Without dead ends: 0 [2018-09-30 20:45:06,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time [2018-09-30 20:45:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-30 20:45:06,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-30 20:45:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-30 20:45:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-30 20:45:06,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 244 [2018-09-30 20:45:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 20:45:06,923 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-30 20:45:06,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 103 states. [2018-09-30 20:45:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-30 20:45:06,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-30 20:45:06,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-30 20:45:13,353 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,354 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,365 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,601 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,646 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,775 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:13,963 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:14,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:14,248 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:14,306 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:14,504 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:14,542 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:14,711 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:14,810 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:15,075 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:15,190 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:15,285 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:15,506 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:15,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:16,143 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:16,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:16,343 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:16,586 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:16,865 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:17,382 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:17,933 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:18,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:18,438 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:18,615 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:18,818 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:19,671 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:19,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:20,207 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:20,337 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:21,012 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:21,243 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:21,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:21,856 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:22,034 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:22,166 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:22,222 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:22,882 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:23,081 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:23,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:23,357 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:23,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:23,514 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:23,661 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:24,980 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:24,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:25,383 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:26,080 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:26,742 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:27,267 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:27,824 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:30,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:32,560 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:32,745 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:33,329 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:33,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:36,552 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:37,811 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:38,038 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:38,850 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:39,880 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:42,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:44,457 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:47,313 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:49,981 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:54,369 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:45:54,553 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:02,806 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:28,456 WARN L178 SmtUtils]: Spent 1.36 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-09-30 20:46:33,277 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,282 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,359 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,410 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,435 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,493 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,511 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,620 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,657 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,803 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:33,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,044 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,203 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,269 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,427 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,561 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,679 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:34,943 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:35,032 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:35,628 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:35,879 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:35,990 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:36,263 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:36,574 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:37,007 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:37,444 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:37,722 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:37,894 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:38,049 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:38,230 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:38,991 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:39,114 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:39,443 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:39,713 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:40,399 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:40,643 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:40,772 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:41,260 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:41,425 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:41,532 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:41,580 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:42,098 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:42,232 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:42,273 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:42,367 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:42,419 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:42,523 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:42,663 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:44,099 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:44,112 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:44,478 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:45,099 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:45,631 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:46,141 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:46,692 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:49,042 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:51,258 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:51,437 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:52,150 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:52,168 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:55,312 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:56,651 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:56,867 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:57,454 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:46:58,463 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:01,171 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:03,158 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:06,015 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:08,662 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:12,793 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:12,984 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:21,153 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-30 20:47:46,152 WARN L178 SmtUtils]: Spent 1.29 m on a formula simplification. DAG size of input: 5105 DAG size of output: 1935 [2018-09-30 20:47:47,060 WARN L178 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 [2018-09-30 20:47:47,923 WARN L178 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 673 DAG size of output: 664 Received shutdown request... [2018-09-30 20:49:00,231 WARN L186 SmtUtils]: Removed 22 from assertion stack [2018-09-30 20:49:00,231 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-30 20:49:00,232 INFO L168 Benchmark]: Toolchain (without parser) took 258099.91 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -194.9 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-09-30 20:49:00,234 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:49:00,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:49:00,235 INFO L168 Benchmark]: Boogie Preprocessor took 23.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-30 20:49:00,242 INFO L168 Benchmark]: RCFGBuilder took 382.20 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 20:49:00,245 INFO L168 Benchmark]: TraceAbstraction took 257645.41 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -216.0 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-30 20:49:00,250 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 0.20 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 42.05 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.55 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 382.20 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 257645.41 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -216.0 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1932. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_20-49-00-271.csv Completed graceful shutdown