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.epf -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-133090d [2018-10-04 09:12:44,789 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 09:12:44,791 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 09:12:44,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 09:12:44,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 09:12:44,806 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 09:12:44,809 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 09:12:44,811 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 09:12:44,814 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 09:12:44,816 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 09:12:44,817 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 09:12:44,865 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-04 09:12:44,892 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 09:12:44,892 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 09:12:44,893 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 09:12:44,893 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 09:12:44,894 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 09:12:44,894 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 09:12:44,894 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 09:12:44,895 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 09:12:44,895 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 09:12:44,895 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 09:12:44,895 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 09:12:44,895 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 09:12:44,896 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 09:12:44,896 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 09:12:44,896 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 09:12:44,896 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 09:12:44,896 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 09:12:44,896 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 09:12:44,897 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 09:12:44,897 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 09:12:44,897 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 09:12:44,897 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 09:12:44,897 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:12:44,898 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 09:12:44,898 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 09:12:44,898 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 09:12:44,898 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 09:12:44,898 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 09:12:44,899 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 09:12:44,899 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 09:12:44,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 09:12:44,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 09:12:44,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 09:12:44,973 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 09:12:44,973 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 09:12:44,974 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-10-04 09:12:44,974 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl' [2018-10-04 09:12:45,024 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 09:12:45,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 09:12:45,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 09:12:45,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 09:12:45,027 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 09:12:45,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 09:12:45,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 09:12:45,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 09:12:45,068 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 09:12:45,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... [2018-10-04 09:12:45,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 09:12:45,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 09:12:45,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 09:12:45,089 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 09:12:45,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 09:12:45,169 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-04 09:12:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 09:12:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 09:12:45,407 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 09:12:45,408 INFO L202 PluginConnector]: Adding new model interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:12:45 BoogieIcfgContainer [2018-10-04 09:12:45,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 09:12:45,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 09:12:45,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 09:12:45,413 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 09:12:45,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 09:12:45" (1/2) ... [2018-10-04 09:12:45,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36de19e0 and model type interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 09:12:45, skipping insertion in model container [2018-10-04 09:12:45,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 09:12:45" (2/2) ... [2018-10-04 09:12:45,418 INFO L112 eAbstractionObserver]: Analyzing ICFG interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-10-04 09:12:45,428 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 09:12:45,437 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 09:12:45,485 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 09:12:45,486 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 09:12:45,486 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 09:12:45,486 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 09:12:45,486 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 09:12:45,486 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 09:12:45,487 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 09:12:45,487 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 09:12:45,487 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 09:12:45,502 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 09:12:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-10-04 09:12:45,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:45,510 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-10-04 09:12:45,511 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:45,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-10-04 09:12:45,520 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:45,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:45,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:45,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:45,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:45,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 09:12:45,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 09:12:45,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 09:12:45,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 09:12:45,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:12:45,696 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 09:12:45,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:45,722 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-10-04 09:12:45,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 09:12:45,724 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-10-04 09:12:45,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:45,733 INFO L225 Difference]: With dead ends: 9 [2018-10-04 09:12:45,734 INFO L226 Difference]: Without dead ends: 5 [2018-10-04 09:12:45,737 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 09:12:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-10-04 09:12:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-04 09:12:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-04 09:12:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-04 09:12:45,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-10-04 09:12:45,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:45,772 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-04 09:12:45,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 09:12:45,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-10-04 09:12:45,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 09:12:45,773 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:45,773 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 09:12:45,773 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:45,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:45,774 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-10-04 09:12:45,774 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:45,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:45,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:45,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:45,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:45,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:45,918 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:45,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:45,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:46,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:46,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-10-04 09:12:46,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 09:12:46,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 09:12:46,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-04 09:12:46,033 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2018-10-04 09:12:46,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:46,099 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-10-04 09:12:46,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 09:12:46,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-10-04 09:12:46,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:46,101 INFO L225 Difference]: With dead ends: 8 [2018-10-04 09:12:46,101 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 09:12:46,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-04 09:12:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 09:12:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 09:12:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 09:12:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 09:12:46,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 09:12:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:46,107 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 09:12:46,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 09:12:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 09:12:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 09:12:46,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:46,110 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2018-10-04 09:12:46,110 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:46,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash 28844579, now seen corresponding path program 2 times [2018-10-04 09:12:46,111 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:46,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:46,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:46,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:46,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:46,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:46,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:46,197 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:46,207 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:12:46,235 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:12:46,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:46,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:46,266 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:46,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-04 09:12:46,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 09:12:46,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 09:12:46,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-04 09:12:46,268 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 09:12:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:46,291 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-10-04 09:12:46,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 09:12:46,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 09:12:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:46,292 INFO L225 Difference]: With dead ends: 9 [2018-10-04 09:12:46,292 INFO L226 Difference]: Without dead ends: 7 [2018-10-04 09:12:46,296 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-04 09:12:46,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-10-04 09:12:46,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-04 09:12:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-04 09:12:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-10-04 09:12:46,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-10-04 09:12:46,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:46,299 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-10-04 09:12:46,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 09:12:46,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-10-04 09:12:46,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-04 09:12:46,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:46,301 INFO L375 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2018-10-04 09:12:46,301 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:46,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:46,301 INFO L82 PathProgramCache]: Analyzing trace with hash 894183756, now seen corresponding path program 3 times [2018-10-04 09:12:46,302 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:46,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:46,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:46,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:46,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:46,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:46,453 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:46,461 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:12:46,481 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-04 09:12:46,481 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:46,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:46,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:46,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-10-04 09:12:46,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 09:12:46,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 09:12:46,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-04 09:12:46,518 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-10-04 09:12:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:46,568 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 09:12:46,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 09:12:46,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-10-04 09:12:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:46,570 INFO L225 Difference]: With dead ends: 10 [2018-10-04 09:12:46,570 INFO L226 Difference]: Without dead ends: 8 [2018-10-04 09:12:46,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-04 09:12:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-10-04 09:12:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-10-04 09:12:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-10-04 09:12:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-10-04 09:12:46,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-10-04 09:12:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:46,574 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-10-04 09:12:46,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 09:12:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-10-04 09:12:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-04 09:12:46,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:46,575 INFO L375 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2018-10-04 09:12:46,576 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:46,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:46,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1949894467, now seen corresponding path program 4 times [2018-10-04 09:12:46,576 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:46,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:46,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:46,577 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:46,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:46,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:46,886 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:46,896 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:12:46,920 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:12:46,920 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:46,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:46,953 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:46,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-04 09:12:46,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-04 09:12:46,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-04 09:12:46,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-04 09:12:46,955 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 7 states. [2018-10-04 09:12:46,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:46,995 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-10-04 09:12:46,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-04 09:12:46,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-10-04 09:12:46,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:46,996 INFO L225 Difference]: With dead ends: 11 [2018-10-04 09:12:46,996 INFO L226 Difference]: Without dead ends: 9 [2018-10-04 09:12:46,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-04 09:12:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-10-04 09:12:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-10-04 09:12:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 09:12:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-10-04 09:12:47,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-10-04 09:12:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:47,001 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-10-04 09:12:47,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-04 09:12:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-10-04 09:12:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 09:12:47,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:47,002 INFO L375 BasicCegarLoop]: trace histogram [5, 1, 1, 1] [2018-10-04 09:12:47,002 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:47,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:47,002 INFO L82 PathProgramCache]: Analyzing trace with hash 317188140, now seen corresponding path program 5 times [2018-10-04 09:12:47,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:47,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:47,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:47,005 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:47,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:47,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:47,170 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:47,178 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:12:47,195 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-10-04 09:12:47,195 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:47,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:47,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:47,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-10-04 09:12:47,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-04 09:12:47,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-04 09:12:47,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-04 09:12:47,247 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-10-04 09:12:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:47,336 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-10-04 09:12:47,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-04 09:12:47,342 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2018-10-04 09:12:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:47,342 INFO L225 Difference]: With dead ends: 12 [2018-10-04 09:12:47,342 INFO L226 Difference]: Without dead ends: 10 [2018-10-04 09:12:47,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-10-04 09:12:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-10-04 09:12:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-10-04 09:12:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-10-04 09:12:47,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-10-04 09:12:47,347 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-10-04 09:12:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:47,347 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-10-04 09:12:47,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-04 09:12:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-10-04 09:12:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-04 09:12:47,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:47,348 INFO L375 BasicCegarLoop]: trace histogram [6, 1, 1, 1] [2018-10-04 09:12:47,349 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:47,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:47,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1242899555, now seen corresponding path program 6 times [2018-10-04 09:12:47,349 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:47,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:47,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:47,350 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:47,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:47,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:47,469 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:47,482 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:12:47,494 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2018-10-04 09:12:47,494 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:47,496 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:47,503 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:47,527 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:47,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-04 09:12:47,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-04 09:12:47,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-04 09:12:47,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-04 09:12:47,529 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 9 states. [2018-10-04 09:12:47,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:47,558 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-10-04 09:12:47,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-04 09:12:47,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2018-10-04 09:12:47,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:47,559 INFO L225 Difference]: With dead ends: 13 [2018-10-04 09:12:47,560 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 09:12:47,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-10-04 09:12:47,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 09:12:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 09:12:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 09:12:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-10-04 09:12:47,563 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-10-04 09:12:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:47,563 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-10-04 09:12:47,564 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-04 09:12:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-10-04 09:12:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 09:12:47,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:47,564 INFO L375 BasicCegarLoop]: trace histogram [7, 1, 1, 1] [2018-10-04 09:12:47,565 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:47,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:47,565 INFO L82 PathProgramCache]: Analyzing trace with hash -124817652, now seen corresponding path program 7 times [2018-10-04 09:12:47,565 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:47,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:47,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:47,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:47,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:47,977 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:47,977 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:47,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:48,020 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:48,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:48,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-04 09:12:48,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-04 09:12:48,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-04 09:12:48,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-04 09:12:48,066 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-10-04 09:12:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:48,119 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-10-04 09:12:48,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-04 09:12:48,119 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2018-10-04 09:12:48,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:48,120 INFO L225 Difference]: With dead ends: 14 [2018-10-04 09:12:48,120 INFO L226 Difference]: Without dead ends: 12 [2018-10-04 09:12:48,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-10-04 09:12:48,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-10-04 09:12:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-10-04 09:12:48,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-10-04 09:12:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-10-04 09:12:48,123 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-10-04 09:12:48,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:48,124 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-10-04 09:12:48,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-04 09:12:48,124 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-10-04 09:12:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-04 09:12:48,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:48,125 INFO L375 BasicCegarLoop]: trace histogram [8, 1, 1, 1] [2018-10-04 09:12:48,125 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:48,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:48,125 INFO L82 PathProgramCache]: Analyzing trace with hash 425621891, now seen corresponding path program 8 times [2018-10-04 09:12:48,125 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:48,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:48,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:48,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:48,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:48,298 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:48,299 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:48,307 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:12:48,334 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:12:48,335 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:48,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:48,370 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:48,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-10-04 09:12:48,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-04 09:12:48,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-04 09:12:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-04 09:12:48,372 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 11 states. [2018-10-04 09:12:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:48,423 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-04 09:12:48,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-04 09:12:48,424 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2018-10-04 09:12:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:48,425 INFO L225 Difference]: With dead ends: 15 [2018-10-04 09:12:48,425 INFO L226 Difference]: Without dead ends: 13 [2018-10-04 09:12:48,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-10-04 09:12:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-04 09:12:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-04 09:12:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-04 09:12:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-04 09:12:48,429 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-04 09:12:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:48,429 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-04 09:12:48,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-04 09:12:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-04 09:12:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-04 09:12:48,429 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:48,430 INFO L375 BasicCegarLoop]: trace histogram [9, 1, 1, 1] [2018-10-04 09:12:48,430 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:48,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash 309378540, now seen corresponding path program 9 times [2018-10-04 09:12:48,430 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:48,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:48,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:48,431 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:48,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:48,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:48,692 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:48,702 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:12:48,723 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-04 09:12:48,723 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:48,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:48,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:48,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-10-04 09:12:48,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-04 09:12:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-04 09:12:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-04 09:12:48,757 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-10-04 09:12:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:48,804 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-10-04 09:12:48,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-04 09:12:48,805 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2018-10-04 09:12:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:48,806 INFO L225 Difference]: With dead ends: 16 [2018-10-04 09:12:48,806 INFO L226 Difference]: Without dead ends: 14 [2018-10-04 09:12:48,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-10-04 09:12:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-04 09:12:48,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-04 09:12:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-04 09:12:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-04 09:12:48,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-10-04 09:12:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:48,811 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-04 09:12:48,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-04 09:12:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-04 09:12:48,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-04 09:12:48,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:48,812 INFO L375 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2018-10-04 09:12:48,812 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:48,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:48,812 INFO L82 PathProgramCache]: Analyzing trace with hash 1000801955, now seen corresponding path program 10 times [2018-10-04 09:12:48,813 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:48,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:48,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:48,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:48,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:49,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:49,076 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:49,083 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-04 09:12:49,114 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-04 09:12:49,114 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:49,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:49,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:49,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-10-04 09:12:49,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-04 09:12:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-04 09:12:49,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-10-04 09:12:49,148 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-10-04 09:12:49,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:49,186 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-10-04 09:12:49,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-04 09:12:49,187 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-10-04 09:12:49,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:49,188 INFO L225 Difference]: With dead ends: 17 [2018-10-04 09:12:49,188 INFO L226 Difference]: Without dead ends: 15 [2018-10-04 09:12:49,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-10-04 09:12:49,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-04 09:12:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-04 09:12:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-04 09:12:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-04 09:12:49,192 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-10-04 09:12:49,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:49,193 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-04 09:12:49,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-04 09:12:49,193 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-04 09:12:49,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-04 09:12:49,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:49,193 INFO L375 BasicCegarLoop]: trace histogram [11, 1, 1, 1] [2018-10-04 09:12:49,194 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:49,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:49,194 INFO L82 PathProgramCache]: Analyzing trace with hash 960091340, now seen corresponding path program 11 times [2018-10-04 09:12:49,194 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:49,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:49,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:49,195 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:49,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:49,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:49,415 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:49,425 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-04 09:12:49,465 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-10-04 09:12:49,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:49,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:49,500 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:49,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-10-04 09:12:49,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-04 09:12:49,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-04 09:12:49,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-10-04 09:12:49,501 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 14 states. [2018-10-04 09:12:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:49,564 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-04 09:12:49,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-04 09:12:49,565 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14 [2018-10-04 09:12:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:49,566 INFO L225 Difference]: With dead ends: 18 [2018-10-04 09:12:49,566 INFO L226 Difference]: Without dead ends: 16 [2018-10-04 09:12:49,567 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-10-04 09:12:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-04 09:12:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-04 09:12:49,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-04 09:12:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-04 09:12:49,570 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-10-04 09:12:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:49,571 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-04 09:12:49,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-04 09:12:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-04 09:12:49,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-04 09:12:49,571 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:49,572 INFO L375 BasicCegarLoop]: trace histogram [12, 1, 1, 1] [2018-10-04 09:12:49,572 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:49,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:49,572 INFO L82 PathProgramCache]: Analyzing trace with hash -301937725, now seen corresponding path program 12 times [2018-10-04 09:12:49,572 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:49,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:49,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:49,573 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:49,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:49,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:49,744 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:49,753 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-10-04 09:12:49,774 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-10-04 09:12:49,775 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:49,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:49,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:49,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-10-04 09:12:49,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-04 09:12:49,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-04 09:12:49,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-10-04 09:12:49,815 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 15 states. [2018-10-04 09:12:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:49,863 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-10-04 09:12:49,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-04 09:12:49,864 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 15 [2018-10-04 09:12:49,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:49,865 INFO L225 Difference]: With dead ends: 19 [2018-10-04 09:12:49,865 INFO L226 Difference]: Without dead ends: 17 [2018-10-04 09:12:49,866 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-10-04 09:12:49,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-04 09:12:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-04 09:12:49,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-04 09:12:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-10-04 09:12:49,870 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-10-04 09:12:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:49,870 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-10-04 09:12:49,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-04 09:12:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-10-04 09:12:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-04 09:12:49,871 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:49,871 INFO L375 BasicCegarLoop]: trace histogram [13, 1, 1, 1] [2018-10-04 09:12:49,871 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:49,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:49,872 INFO L82 PathProgramCache]: Analyzing trace with hash -770133076, now seen corresponding path program 13 times [2018-10-04 09:12:49,872 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:49,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:49,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:49,873 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:49,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:50,125 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:50,125 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:50,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:50,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:50,193 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:50,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-10-04 09:12:50,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-04 09:12:50,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-04 09:12:50,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-10-04 09:12:50,195 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 16 states. [2018-10-04 09:12:50,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:50,463 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-04 09:12:50,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-04 09:12:50,463 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 16 [2018-10-04 09:12:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:50,464 INFO L225 Difference]: With dead ends: 20 [2018-10-04 09:12:50,464 INFO L226 Difference]: Without dead ends: 18 [2018-10-04 09:12:50,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-10-04 09:12:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-04 09:12:50,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-04 09:12:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-04 09:12:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-04 09:12:50,472 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 16 [2018-10-04 09:12:50,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:50,472 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-04 09:12:50,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-04 09:12:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-04 09:12:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-04 09:12:50,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:50,473 INFO L375 BasicCegarLoop]: trace histogram [14, 1, 1, 1] [2018-10-04 09:12:50,473 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:50,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:50,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1895680227, now seen corresponding path program 14 times [2018-10-04 09:12:50,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:50,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:50,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:50,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 09:12:50,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:50,704 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:50,704 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:50,705 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:50,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-04 09:12:50,759 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-04 09:12:50,759 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:50,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:50,816 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:50,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-10-04 09:12:50,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-04 09:12:50,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-04 09:12:50,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-10-04 09:12:50,818 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 17 states. [2018-10-04 09:12:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:51,008 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-10-04 09:12:51,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-04 09:12:51,009 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2018-10-04 09:12:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:51,009 INFO L225 Difference]: With dead ends: 21 [2018-10-04 09:12:51,010 INFO L226 Difference]: Without dead ends: 19 [2018-10-04 09:12:51,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-10-04 09:12:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-04 09:12:51,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-04 09:12:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-04 09:12:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-04 09:12:51,014 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 17 [2018-10-04 09:12:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:51,014 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-04 09:12:51,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-04 09:12:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-04 09:12:51,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-04 09:12:51,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:51,015 INFO L375 BasicCegarLoop]: trace histogram [15, 1, 1, 1] [2018-10-04 09:12:51,016 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:51,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:51,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1363453300, now seen corresponding path program 15 times [2018-10-04 09:12:51,016 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:51,016 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:51,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:51,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:51,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 09:12:51,226 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:51,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 09:12:51,227 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 09:12:51,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-04 09:12:51,279 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2018-10-04 09:12:51,280 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-04 09:12:51,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 09:12:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 09:12:51,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 09:12:51,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-10-04 09:12:51,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-04 09:12:51,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-04 09:12:51,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-10-04 09:12:51,318 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 18 states. [2018-10-04 09:12:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 09:12:51,364 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-04 09:12:51,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-04 09:12:51,364 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18 [2018-10-04 09:12:51,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 09:12:51,365 INFO L225 Difference]: With dead ends: 22 [2018-10-04 09:12:51,365 INFO L226 Difference]: Without dead ends: 20 [2018-10-04 09:12:51,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-10-04 09:12:51,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-10-04 09:12:51,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-10-04 09:12:51,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-10-04 09:12:51,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-10-04 09:12:51,370 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2018-10-04 09:12:51,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 09:12:51,370 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-10-04 09:12:51,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-04 09:12:51,370 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-10-04 09:12:51,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-04 09:12:51,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 09:12:51,371 INFO L375 BasicCegarLoop]: trace histogram [16, 1, 1, 1] [2018-10-04 09:12:51,371 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 09:12:51,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 09:12:51,371 INFO L82 PathProgramCache]: Analyzing trace with hash 682622467, now seen corresponding path program 16 times [2018-10-04 09:12:51,371 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 09:12:51,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 09:12:51,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:51,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-04 09:12:51,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 09:12:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-04 09:12:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-04 09:12:51,403 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-04 09:12:51,428 INFO L202 PluginConnector]: Adding new model interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 09:12:51 BoogieIcfgContainer [2018-10-04 09:12:51,428 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 09:12:51,429 INFO L168 Benchmark]: Toolchain (without parser) took 6404.91 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.3 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -38.0 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2018-10-04 09:12:51,431 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:12:51,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:12:51,432 INFO L168 Benchmark]: Boogie Preprocessor took 20.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:12:51,433 INFO L168 Benchmark]: RCFGBuilder took 319.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-04 09:12:51,433 INFO L168 Benchmark]: TraceAbstraction took 6019.39 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.3 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -57.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 09:12:51,437 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 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.85 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 319.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6019.39 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.3 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -57.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 61]: assertion can be violated assertion can be violated We found a FailurePath: [L18] havoc main_#res; [L19] havoc main_#t~nondet0, main_~yy~5, main_~z~5, main_#t~nondet1, main_~xx~5, main_~x~5, main_~y~5, main_~zz~5, main_~i~5; [L20] main_~x~5 := main_#t~nondet0; [L21] havoc main_#t~nondet0; [L22] main_~y~5 := main_#t~nondet1; [L23] havoc main_#t~nondet1; [L24] havoc main_~xx~5; [L25] havoc main_~yy~5; [L26] havoc main_~zz~5; [L27] main_~z~5 := 0; [L28] main_~i~5 := 0; VAL [main_~i~5=0, main_~z~5=0] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=1] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=2] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=3] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=4] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=5] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=6] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=7] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=8] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=9] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=10] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=11] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=12] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=13] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=14] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=15] [L56] assume 0 <= main_~i~5 && main_~i~5 < 16; [L57] havoc main_~z~5; [L58] main_~i~5 := main_~i~5 + 1; VAL [main_~i~5=16] [L35] assume main_~i~5 < 4294967296 && !(main_~i~5 < 16); [L36] assume main_~x~5 < -65536; [L37] main_~xx~5 := main_~x~5 % 65536; [L38] assume main_~y~5 < -65536; [L39] main_~yy~5 := main_~y~5 % 65536; [L40] havoc main_~xx~5; [L41] havoc main_~xx~5; [L42] havoc main_~xx~5; [L43] havoc main_~xx~5; [L44] havoc main_~yy~5; [L45] havoc main_~yy~5; [L46] havoc main_~yy~5; [L47] havoc main_~yy~5; [L48] havoc main_~zz~5; [L49] assume (((main_~zz~5 < 4294967296 && 0 <= main_~zz~5) && -4294967296 <= main_~z~5) && main_~z~5 < 0) && !(main_~z~5 + 4294967296 == main_~zz~5); [L50] __VERIFIER_assert_#in~cond := 0; [L51] havoc __VERIFIER_assert_~cond; [L52] __VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; [L53] assume __VERIFIER_assert_~cond == 0; VAL [__VERIFIER_assert_#in~cond=0, __VERIFIER_assert_~cond=0, main_~i~5=16, main_~x~5=-65537, main_~y~5=-65537, main_~zz~5=0, main_~z~5=-1] [L61] assert false; VAL [__VERIFIER_assert_#in~cond=0, __VERIFIER_assert_~cond=0, main_~i~5=16, main_~x~5=-65537, main_~y~5=-65537, main_~zz~5=0, main_~z~5=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. UNSAFE Result, 5.9s OverallTime, 17 OverallIterations, 16 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 48 SDtfs, 0 SDslu, 114 SDs, 0 SdLazy, 266 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 302 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=16, 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: 0.0s AutomataMinimizationTime, 16 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 352 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 302 ConstructedInterpolants, 0 QuantifiedInterpolants, 10088 SizeOfPredicates, 15 NumberOfNonLiveVariables, 810 ConjunctsInSsa, 150 ConjunctsInUnsatCore, 31 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1360 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_09-12-51-448.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/interleave_bits.i_3.bplTransformedIcfg_BEv2_4.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_09-12-51-448.csv Received shutdown request...