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/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d19836b [2018-09-26 21:45:15,376 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 21:45:15,378 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 21:45:15,390 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 21:45:15,390 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 21:45:15,391 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 21:45:15,393 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 21:45:15,395 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 21:45:15,397 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 21:45:15,398 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 21:45:15,399 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 21:45:15,432 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-09-26 21:45:15,455 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 21:45:15,456 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 21:45:15,458 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-26 21:45:15,458 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-26 21:45:15,459 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-26 21:45:15,459 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-26 21:45:15,460 INFO L133 SettingsManager]: * Use SBE=true [2018-09-26 21:45:15,460 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-26 21:45:15,460 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-26 21:45:15,460 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-26 21:45:15,460 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-26 21:45:15,461 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-26 21:45:15,461 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-26 21:45:15,461 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-26 21:45:15,461 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-26 21:45:15,463 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-26 21:45:15,463 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-26 21:45:15,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-26 21:45:15,464 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 21:45:15,465 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-26 21:45:15,465 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-26 21:45:15,465 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-26 21:45:15,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:45:15,466 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 21:45:15,466 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-26 21:45:15,466 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-26 21:45:15,466 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-26 21:45:15,466 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 21:45:15,467 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-26 21:45:15,467 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 21:45:15,467 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-26 21:45:15,529 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 21:45:15,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 21:45:15,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 21:45:15,552 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 21:45:15,553 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 21:45:15,554 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl [2018-09-26 21:45:15,554 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl' [2018-09-26 21:45:15,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 21:45:15,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 21:45:15,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 21:45:15,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 21:45:15,641 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 21:45:15,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 21:45:15,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 21:45:15,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 21:45:15,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 21:45:15,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... [2018-09-26 21:45:15,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 21:45:15,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 21:45:15,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 21:45:15,742 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 21:45:15,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-26 21:45:15,824 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-26 21:45:15,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 21:45:15,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 21:45:16,351 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 21:45:16,352 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:45:16 BoogieIcfgContainer [2018-09-26 21:45:16,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 21:45:16,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 21:45:16,353 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 21:45:16,356 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 21:45:16,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:45:15" (1/2) ... [2018-09-26 21:45:16,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350790ea and model type pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:45:16, skipping insertion in model container [2018-09-26 21:45:16,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:45:16" (2/2) ... [2018-09-26 21:45:16,360 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl [2018-09-26 21:45:16,369 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-26 21:45:16,378 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 21:45:16,429 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 21:45:16,430 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 21:45:16,430 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 21:45:16,430 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-26 21:45:16,430 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 21:45:16,430 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 21:45:16,430 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 21:45:16,431 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 21:45:16,431 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 21:45:16,447 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-09-26 21:45:16,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 21:45:16,453 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:16,454 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:45:16,455 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:16,463 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:16,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1823027031, now seen corresponding path program 1 times [2018-09-26 21:45:16,466 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:16,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:16,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:16,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:16,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:16,733 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:45:16,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 21:45:16,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 21:45:16,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 21:45:16,752 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:16,754 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2018-09-26 21:45:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:17,005 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2018-09-26 21:45:17,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:45:17,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-26 21:45:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:17,021 INFO L225 Difference]: With dead ends: 43 [2018-09-26 21:45:17,021 INFO L226 Difference]: Without dead ends: 39 [2018-09-26 21:45:17,024 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:17,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-09-26 21:45:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 17. [2018-09-26 21:45:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-26 21:45:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-09-26 21:45:17,065 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 14 [2018-09-26 21:45:17,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:17,066 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-09-26 21:45:17,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 21:45:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2018-09-26 21:45:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 21:45:17,067 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:17,067 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:45:17,068 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:17,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:17,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1823086613, now seen corresponding path program 1 times [2018-09-26 21:45:17,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:17,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:17,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:17,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:17,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:17,358 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:45:17,358 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 21:45:17,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 21:45:17,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 21:45:17,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:17,361 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand 4 states. [2018-09-26 21:45:17,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:17,782 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2018-09-26 21:45:17,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 21:45:17,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-26 21:45:17,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:17,784 INFO L225 Difference]: With dead ends: 47 [2018-09-26 21:45:17,784 INFO L226 Difference]: Without dead ends: 31 [2018-09-26 21:45:17,785 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:17,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-26 21:45:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2018-09-26 21:45:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-26 21:45:17,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2018-09-26 21:45:17,795 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 14 [2018-09-26 21:45:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:17,796 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2018-09-26 21:45:17,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 21:45:17,797 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2018-09-26 21:45:17,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 21:45:17,797 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:17,798 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:45:17,798 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:17,798 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:17,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1765828311, now seen corresponding path program 1 times [2018-09-26 21:45:17,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:17,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:17,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:17,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:17,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:17,923 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:45:17,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:45:17,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:45:17,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:45:17,924 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:17,925 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 3 states. [2018-09-26 21:45:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:17,977 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2018-09-26 21:45:17,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:45:17,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-26 21:45:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:17,984 INFO L225 Difference]: With dead ends: 49 [2018-09-26 21:45:17,984 INFO L226 Difference]: Without dead ends: 31 [2018-09-26 21:45:17,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-26 21:45:17,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-09-26 21:45:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-09-26 21:45:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-09-26 21:45:18,001 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 14 [2018-09-26 21:45:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:18,001 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2018-09-26 21:45:18,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:45:18,001 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2018-09-26 21:45:18,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 21:45:18,002 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:18,002 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:45:18,003 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:18,003 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:18,003 INFO L82 PathProgramCache]: Analyzing trace with hash 2023993749, now seen corresponding path program 1 times [2018-09-26 21:45:18,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:18,004 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:18,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:18,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:18,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:18,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:18,091 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:45:18,091 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:45:18,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:45:18,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:45:18,092 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:18,092 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 3 states. [2018-09-26 21:45:18,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:18,146 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2018-09-26 21:45:18,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:45:18,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-09-26 21:45:18,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:18,149 INFO L225 Difference]: With dead ends: 51 [2018-09-26 21:45:18,149 INFO L226 Difference]: Without dead ends: 33 [2018-09-26 21:45:18,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-26 21:45:18,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-09-26 21:45:18,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-09-26 21:45:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2018-09-26 21:45:18,163 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 14 [2018-09-26 21:45:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:18,164 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2018-09-26 21:45:18,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:45:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2018-09-26 21:45:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-26 21:45:18,167 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:18,167 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:45:18,167 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:18,168 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:18,168 INFO L82 PathProgramCache]: Analyzing trace with hash 550402615, now seen corresponding path program 1 times [2018-09-26 21:45:18,168 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:18,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:18,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:18,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:18,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:18,306 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:18,306 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 [2018-09-26 21:45:18,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:18,407 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:18,902 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-26 21:45:18,902 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-09-26 21:45:18,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:45:18,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:45:18,903 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:18,903 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 6 states. [2018-09-26 21:45:19,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:19,228 INFO L93 Difference]: Finished difference Result 127 states and 160 transitions. [2018-09-26 21:45:19,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 21:45:19,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-09-26 21:45:19,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:19,230 INFO L225 Difference]: With dead ends: 127 [2018-09-26 21:45:19,231 INFO L226 Difference]: Without dead ends: 97 [2018-09-26 21:45:19,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:19,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-09-26 21:45:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 79. [2018-09-26 21:45:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-09-26 21:45:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2018-09-26 21:45:19,251 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 26 [2018-09-26 21:45:19,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:19,251 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2018-09-26 21:45:19,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:45:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2018-09-26 21:45:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-26 21:45:19,252 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:19,253 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:45:19,253 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:19,253 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:19,253 INFO L82 PathProgramCache]: Analyzing trace with hash 943429625, now seen corresponding path program 1 times [2018-09-26 21:45:19,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:19,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:19,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:19,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:19,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:19,399 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-26 21:45:19,400 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2018-09-26 21:45:19,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:19,469 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-26 21:45:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 21:45:19,915 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-09-26 21:45:19,915 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-09-26 21:45:19,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 21:45:19,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 21:45:19,916 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:19,916 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand 6 states. [2018-09-26 21:45:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:20,985 INFO L93 Difference]: Finished difference Result 233 states and 295 transitions. [2018-09-26 21:45:20,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 21:45:20,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-09-26 21:45:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:20,989 INFO L225 Difference]: With dead ends: 233 [2018-09-26 21:45:20,990 INFO L226 Difference]: Without dead ends: 145 [2018-09-26 21:45:20,991 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:20,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-09-26 21:45:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2018-09-26 21:45:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-09-26 21:45:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 157 transitions. [2018-09-26 21:45:21,026 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 157 transitions. Word has length 26 [2018-09-26 21:45:21,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:21,026 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 157 transitions. [2018-09-26 21:45:21,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 21:45:21,027 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 157 transitions. [2018-09-26 21:45:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-26 21:45:21,028 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 21:45:21,028 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-26 21:45:21,028 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 21:45:21,029 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-26 21:45:21,029 INFO L82 PathProgramCache]: Analyzing trace with hash -477798729, now seen corresponding path program 1 times [2018-09-26 21:45:21,029 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-26 21:45:21,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-26 21:45:21,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:21,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-26 21:45:21,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-26 21:45:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 21:45:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-09-26 21:45:21,086 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 21:45:21,086 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 21:45:21,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 21:45:21,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 21:45:21,087 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-26 21:45:21,087 INFO L87 Difference]: Start difference. First operand 127 states and 157 transitions. Second operand 3 states. [2018-09-26 21:45:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 21:45:21,094 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2018-09-26 21:45:21,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 21:45:21,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-09-26 21:45:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 21:45:21,094 INFO L225 Difference]: With dead ends: 127 [2018-09-26 21:45:21,094 INFO L226 Difference]: Without dead ends: 0 [2018-09-26 21:45:21,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-26 21:45:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-26 21:45:21,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-26 21:45:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-26 21:45:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-26 21:45:21,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-09-26 21:45:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 21:45:21,097 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-26 21:45:21,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 21:45:21,097 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-26 21:45:21,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-26 21:45:21,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-26 21:45:21,517 WARN L178 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-09-26 21:45:21,986 WARN L178 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2018-09-26 21:45:22,094 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 16 [2018-09-26 21:45:22,285 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2018-09-26 21:45:22,653 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2018-09-26 21:45:22,947 INFO L422 ceAbstractionStarter]: At program point L225(lines 225 235) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (not (= (+ ~p1_old 1) 0)) .cse0 (<= 1 ~mode2)) (and (= ~mode1 1) (<= ~r1 0) (= ~mode2 0) .cse0 (<= 0 ~p1_new)))) [2018-09-26 21:45:22,947 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 47 318) no Hoare annotation was computed. [2018-09-26 21:45:22,947 INFO L422 ceAbstractionStarter]: At program point L283(lines 279 284) the Hoare annotation is: (and (= ~mode1 1) (<= 1 ULTIMATE.start_check_~tmp~77) (= ~mode1 ~mode2) (not (= (+ ~p1_old 1) 0)) (= 0 (+ ~nomsg 1))) [2018-09-26 21:45:22,947 INFO L422 ceAbstractionStarter]: At program point L240(lines 234 241) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (<= 0 ~p1_new)) [2018-09-26 21:45:22,948 INFO L422 ceAbstractionStarter]: At program point L304(lines 304 310) the Hoare annotation is: (and (= ~mode1 1) (not (= 0 ULTIMATE.start_assert_~arg)) (= ~mode1 ~mode2) (not (= (+ ~p1_old 1) 0)) (= 0 (+ ~nomsg 1)) (not (= 0 |ULTIMATE.start_assert_#in~arg|))) [2018-09-26 21:45:22,948 INFO L422 ceAbstractionStarter]: At program point L300(lines 296 301) the Hoare annotation is: (and (= ~mode1 1) (= ~mode1 ~mode2) (not (= (+ ~p1_old 1) 0)) (= 0 (+ ~nomsg 1)) (not (= 0 |ULTIMATE.start_assert_#in~arg|))) [2018-09-26 21:45:22,948 INFO L422 ceAbstractionStarter]: At program point L199(lines 199 212) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (not (= (+ ~p1_old 1) 0)) (= ~mode1 1) .cse0 (= ~mode1 ~mode2)) (and (<= ~r1 0) (= ~mode2 0) (<= (+ ~mode1 256) 0) .cse0))) [2018-09-26 21:45:22,948 INFO L422 ceAbstractionStarter]: At program point L290(lines 290 297) the Hoare annotation is: (and (= ~mode1 1) (<= 1 ULTIMATE.start_check_~tmp~77) (= ~mode1 ~mode2) (not (= (+ ~p1_old 1) 0)) (= 0 (+ ~nomsg 1)) (<= 1 ULTIMATE.start_main_~c1~84)) [2018-09-26 21:45:22,948 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 47 318) no Hoare annotation was computed. [2018-09-26 21:45:22,948 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 47 318) no Hoare annotation was computed. [2018-09-26 21:45:22,949 INFO L422 ceAbstractionStarter]: At program point L220(lines 211 221) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (not (= (+ ~p1_old 1) 0)) .cse0 (<= 1 ~mode2)) (and (= ~mode1 1) (<= ~r1 0) (= ~mode2 0) .cse0 (<= 0 ~p1_new)))) [2018-09-26 21:45:22,949 INFO L422 ceAbstractionStarter]: At program point L315(lines 193 315) the Hoare annotation is: (let ((.cse0 (= 0 (+ ~nomsg 1)))) (or (and (not (= (+ ~p1_old 1) 0)) (= ~mode1 1) .cse0 (= ~mode1 ~mode2)) (and (<= ~r1 0) (= ~mode2 0) (<= (+ ~mode1 256) 0) .cse0))) [2018-09-26 21:45:22,949 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 317) no Hoare annotation was computed. [2018-09-26 21:45:22,949 INFO L422 ceAbstractionStarter]: At program point L245(lines 245 254) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (<= 0 ~p1_new)) [2018-09-26 21:45:22,950 INFO L422 ceAbstractionStarter]: At program point L309(lines 309 316) the Hoare annotation is: false [2018-09-26 21:45:22,950 INFO L422 ceAbstractionStarter]: At program point L272(lines 272 280) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (not (= (+ ~p1_old 1) 0)) (= 0 (+ ~nomsg 1))) [2018-09-26 21:45:22,950 INFO L422 ceAbstractionStarter]: At program point L260(lines 253 261) the Hoare annotation is: (and (= ~mode1 1) (<= ~r1 0) (= ~mode1 ~mode2) (= 0 (+ ~nomsg 1)) (<= 0 ~p1_new)) [2018-09-26 21:45:22,966 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:45:22 BoogieIcfgContainer [2018-09-26 21:45:22,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 21:45:22,967 INFO L168 Benchmark]: Toolchain (without parser) took 7330.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 341.0 MB). Peak memory consumption was 341.0 MB. Max. memory is 7.1 GB. [2018-09-26 21:45:22,968 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:45:22,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.96 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:45:22,970 INFO L168 Benchmark]: Boogie Preprocessor took 52.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 21:45:22,971 INFO L168 Benchmark]: RCFGBuilder took 610.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-26 21:45:22,972 INFO L168 Benchmark]: TraceAbstraction took 6613.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. [2018-09-26 21:45:22,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.96 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 52.41 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 610.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6613.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 309.3 MB). Peak memory consumption was 309.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 317]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 234]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && 0 <= ~p1_new - InvariantResult [Line: 272]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && !(~p1_old + 1 == 0)) && 0 == ~nomsg + 1 - InvariantResult [Line: 279]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && 1 <= check_~tmp~77) && ~mode1 == ~mode2) && !(~p1_old + 1 == 0)) && 0 == ~nomsg + 1 - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: ((!(~p1_old + 1 == 0) && 0 == ~nomsg + 1) && 1 <= ~mode2) || ((((~mode1 == 1 && ~r1 <= 0) && ~mode2 == 0) && 0 == ~nomsg + 1) && 0 <= ~p1_new) - InvariantResult [Line: 199]: Loop Invariant Derived loop invariant: (((!(~p1_old + 1 == 0) && ~mode1 == 1) && 0 == ~nomsg + 1) && ~mode1 == ~mode2) || (((~r1 <= 0 && ~mode2 == 0) && ~mode1 + 256 <= 0) && 0 == ~nomsg + 1) - InvariantResult [Line: 309]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 245]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && 0 <= ~p1_new - InvariantResult [Line: 225]: Loop Invariant Derived loop invariant: ((!(~p1_old + 1 == 0) && 0 == ~nomsg + 1) && 1 <= ~mode2) || ((((~mode1 == 1 && ~r1 <= 0) && ~mode2 == 0) && 0 == ~nomsg + 1) && 0 <= ~p1_new) - InvariantResult [Line: 296]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~mode1 == ~mode2) && !(~p1_old + 1 == 0)) && 0 == ~nomsg + 1) && !(0 == assert_#in~arg) - InvariantResult [Line: 290]: Loop Invariant Derived loop invariant: ((((~mode1 == 1 && 1 <= check_~tmp~77) && ~mode1 == ~mode2) && !(~p1_old + 1 == 0)) && 0 == ~nomsg + 1) && 1 <= main_~c1~84 - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: (((!(~p1_old + 1 == 0) && ~mode1 == 1) && 0 == ~nomsg + 1) && ~mode1 == ~mode2) || (((~r1 <= 0 && ~mode2 == 0) && ~mode1 + 256 <= 0) && 0 == ~nomsg + 1) - InvariantResult [Line: 304]: Loop Invariant Derived loop invariant: ((((~mode1 == 1 && !(0 == assert_~arg)) && ~mode1 == ~mode2) && !(~p1_old + 1 == 0)) && 0 == ~nomsg + 1) && !(0 == assert_#in~arg) - InvariantResult [Line: 253]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && ~r1 <= 0) && ~mode1 == ~mode2) && 0 == ~nomsg + 1) && 0 <= ~p1_new - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 6.5s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 1.8s HoareAnnotationTime, HoareTripleCheckerStatistics: 158 SDtfs, 219 SDslu, 254 SDs, 0 SdLazy, 114 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 39 NumberOfFragments, 310 HoareAnnotationTreeSize, 13 FomulaSimplifications, 537 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 488 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 13893 SizeOfPredicates, 0 NumberOfNonLiveVariables, 451 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 56/60 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_21-45-22-995.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c_9.bplTransformedIcfg_BEv2_24.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_21-45-22-995.csv Received shutdown request...