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/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-4eac566 [2018-09-23 19:43:23,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-23 19:43:23,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-23 19:43:24,003 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-23 19:43:24,004 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-23 19:43:24,005 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-23 19:43:24,006 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-23 19:43:24,008 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-23 19:43:24,009 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-23 19:43:24,010 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-23 19:43:24,011 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-23 19:43:24,037 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 [2018-09-23 19:43:24,053 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-23 19:43:24,053 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-23 19:43:24,054 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-23 19:43:24,054 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-23 19:43:24,055 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-23 19:43:24,055 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-23 19:43:24,055 INFO L133 SettingsManager]: * Use SBE=true [2018-09-23 19:43:24,055 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-23 19:43:24,056 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-23 19:43:24,056 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-23 19:43:24,056 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-23 19:43:24,056 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-23 19:43:24,056 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-23 19:43:24,057 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-23 19:43:24,057 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-23 19:43:24,057 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-23 19:43:24,057 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-23 19:43:24,057 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-23 19:43:24,058 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-23 19:43:24,058 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-23 19:43:24,058 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-23 19:43:24,058 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-23 19:43:24,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:43:24,059 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-23 19:43:24,059 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-23 19:43:24,059 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-23 19:43:24,059 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-23 19:43:24,059 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-23 19:43:24,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-23 19:43:24,060 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-23 19:43:24,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-23 19:43:24,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-23 19:43:24,159 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-23 19:43:24,161 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-23 19:43:24,162 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-23 19:43:24,162 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl [2018-09-23 19:43:24,163 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl' [2018-09-23 19:43:24,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-23 19:43:24,223 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-23 19:43:24,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-23 19:43:24,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-23 19:43:24,224 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-23 19:43:24,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-23 19:43:24,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-23 19:43:24,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-23 19:43:24,269 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-23 19:43:24,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... [2018-09-23 19:43:24,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-23 19:43:24,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-23 19:43:24,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-23 19:43:24,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-23 19:43:24,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-23 19:43:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-23 19:43:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-23 19:43:24,591 INFO L354 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-23 19:43:24,591 INFO L202 PluginConnector]: Adding new model num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:43:24 BoogieIcfgContainer [2018-09-23 19:43:24,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-23 19:43:24,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-23 19:43:24,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-23 19:43:24,596 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-23 19:43:24,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.09 07:43:24" (1/2) ... [2018-09-23 19:43:24,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@612f1fb5 and model type num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.09 07:43:24, skipping insertion in model container [2018-09-23 19:43:24,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.09 07:43:24" (2/2) ... [2018-09-23 19:43:24,600 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.i_3.bpl [2018-09-23 19:43:24,610 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-23 19:43:24,618 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-23 19:43:24,663 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-23 19:43:24,664 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-23 19:43:24,664 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-23 19:43:24,665 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-23 19:43:24,665 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-23 19:43:24,665 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-23 19:43:24,665 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-23 19:43:24,665 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-23 19:43:24,666 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-23 19:43:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-09-23 19:43:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-23 19:43:24,687 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:24,688 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-23 19:43:24,689 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:24,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:24,695 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-23 19:43:24,698 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:24,698 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:24,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:24,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:43:24,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:24,874 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-23 19:43:24,875 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-23 19:43:24,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-23 19:43:24,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-23 19:43:24,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-23 19:43:24,894 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-09-23 19:43:24,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:24,955 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-09-23 19:43:24,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-23 19:43:24,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-23 19:43:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:24,970 INFO L225 Difference]: With dead ends: 11 [2018-09-23 19:43:24,971 INFO L226 Difference]: Without dead ends: 7 [2018-09-23 19:43:24,975 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 [2018-09-23 19:43:25,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-23 19:43:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-23 19:43:25,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-23 19:43:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-23 19:43:25,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-23 19:43:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:25,024 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-23 19:43:25,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-23 19:43:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-23 19:43:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-23 19:43:25,025 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:25,025 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-23 19:43:25,025 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:25,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:25,026 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-23 19:43:25,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:25,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:25,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:25,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:43:25,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:25,159 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:43:25,159 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:43:25,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:43:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:25,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:43:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:25,368 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:43:25,368 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-09-23 19:43:25,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-23 19:43:25,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-23 19:43:25,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:43:25,370 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-09-23 19:43:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:25,422 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-23 19:43:25,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-23 19:43:25,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-09-23 19:43:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:25,424 INFO L225 Difference]: With dead ends: 11 [2018-09-23 19:43:25,424 INFO L226 Difference]: Without dead ends: 9 [2018-09-23 19:43:25,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-23 19:43:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-23 19:43:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-23 19:43:25,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-23 19:43:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-23 19:43:25,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-09-23 19:43:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:25,429 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-23 19:43:25,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-23 19:43:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-23 19:43:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-23 19:43:25,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:25,431 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-09-23 19:43:25,431 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:25,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:25,431 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-09-23 19:43:25,432 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:25,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:25,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:25,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:43:25,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:25,595 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:43:25,595 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:43:25,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-23 19:43:25,619 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-23 19:43:25,620 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:43:25,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:43:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:25,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:43:25,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-09-23 19:43:25,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-23 19:43:25,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-23 19:43:25,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-23 19:43:25,836 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-09-23 19:43:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:25,940 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-23 19:43:25,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-23 19:43:25,941 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-09-23 19:43:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:25,942 INFO L225 Difference]: With dead ends: 13 [2018-09-23 19:43:25,942 INFO L226 Difference]: Without dead ends: 11 [2018-09-23 19:43:25,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-23 19:43:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-23 19:43:25,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-23 19:43:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-23 19:43:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-23 19:43:25,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-09-23 19:43:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:25,948 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-23 19:43:25,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-23 19:43:25,948 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-23 19:43:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-23 19:43:25,949 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:25,949 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-09-23 19:43:25,949 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:25,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:25,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-09-23 19:43:25,950 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:25,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:25,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:25,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:43:25,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:26,290 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:43:26,290 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:43:26,305 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-23 19:43:26,322 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-23 19:43:26,322 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:43:26,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:43:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:27,019 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:43:27,019 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-09-23 19:43:27,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-23 19:43:27,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-23 19:43:27,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-23 19:43:27,021 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-09-23 19:43:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:27,123 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-09-23 19:43:27,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-23 19:43:27,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2018-09-23 19:43:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:27,124 INFO L225 Difference]: With dead ends: 15 [2018-09-23 19:43:27,125 INFO L226 Difference]: Without dead ends: 13 [2018-09-23 19:43:27,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-09-23 19:43:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-23 19:43:27,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-23 19:43:27,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-23 19:43:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-23 19:43:27,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-23 19:43:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:27,133 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-23 19:43:27,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-23 19:43:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-23 19:43:27,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-23 19:43:27,133 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:27,134 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-09-23 19:43:27,134 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:27,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:27,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-09-23 19:43:27,134 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:27,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:27,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:27,139 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:43:27,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:27,372 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:43:27,372 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:43:27,382 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-23 19:43:27,408 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-23 19:43:27,409 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:43:27,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:43:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:27,825 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:43:27,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-09-23 19:43:27,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-23 19:43:27,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-23 19:43:27,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-09-23 19:43:27,827 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 11 states. [2018-09-23 19:43:27,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:27,970 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-23 19:43:27,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-23 19:43:27,971 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 12 [2018-09-23 19:43:27,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:27,971 INFO L225 Difference]: With dead ends: 17 [2018-09-23 19:43:27,972 INFO L226 Difference]: Without dead ends: 15 [2018-09-23 19:43:27,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-09-23 19:43:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-23 19:43:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-23 19:43:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-23 19:43:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-23 19:43:27,978 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-09-23 19:43:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:27,979 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-23 19:43:27,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-23 19:43:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-23 19:43:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-23 19:43:27,980 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:27,980 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-09-23 19:43:27,980 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:27,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:27,981 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-09-23 19:43:27,981 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:27,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:27,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:27,982 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:43:27,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:28,400 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:43:28,401 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:43:28,420 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-09-23 19:43:28,465 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-09-23 19:43:28,465 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:43:28,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:43:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:29,344 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:43:29,344 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-09-23 19:43:29,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-23 19:43:29,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-23 19:43:29,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-09-23 19:43:29,346 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 13 states. [2018-09-23 19:43:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:29,611 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-23 19:43:29,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-23 19:43:29,611 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2018-09-23 19:43:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:29,613 INFO L225 Difference]: With dead ends: 19 [2018-09-23 19:43:29,613 INFO L226 Difference]: Without dead ends: 17 [2018-09-23 19:43:29,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-09-23 19:43:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-23 19:43:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-23 19:43:29,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-23 19:43:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-09-23 19:43:29,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-09-23 19:43:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:29,622 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-09-23 19:43:29,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-23 19:43:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-09-23 19:43:29,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-23 19:43:29,623 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:29,624 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-09-23 19:43:29,624 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:29,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:29,624 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-09-23 19:43:29,624 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:29,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:29,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:29,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:43:29,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:29,793 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:29,794 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:43:29,794 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:43:29,803 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-09-23 19:43:29,833 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-09-23 19:43:29,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-23 19:43:29,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:43:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:32,780 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:43:32,780 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-09-23 19:43:32,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-23 19:43:32,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-23 19:43:32,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-09-23 19:43:32,782 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 15 states. [2018-09-23 19:43:33,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:33,200 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-23 19:43:33,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-23 19:43:33,201 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2018-09-23 19:43:33,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:33,202 INFO L225 Difference]: With dead ends: 21 [2018-09-23 19:43:33,202 INFO L226 Difference]: Without dead ends: 19 [2018-09-23 19:43:33,203 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-09-23 19:43:33,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-23 19:43:33,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-23 19:43:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-23 19:43:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-23 19:43:33,212 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-09-23 19:43:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:33,212 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-23 19:43:33,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-23 19:43:33,212 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-23 19:43:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-23 19:43:33,213 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:33,213 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-09-23 19:43:33,213 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:33,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:33,214 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-09-23 19:43:33,214 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:33,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:33,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:33,215 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-23 19:43:33,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:33,427 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:33,428 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-23 19:43:33,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-23 19:43:33,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:43:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-23 19:43:33,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-23 19:43:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-23 19:43:42,816 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-23 19:43:42,816 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-09-23 19:43:42,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-23 19:43:42,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-23 19:43:42,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=233, Unknown=1, NotChecked=0, Total=272 [2018-09-23 19:43:42,818 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 17 states. [2018-09-23 19:43:43,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-23 19:43:43,677 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-23 19:43:43,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-23 19:43:43,678 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 18 [2018-09-23 19:43:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-23 19:43:43,679 INFO L225 Difference]: With dead ends: 23 [2018-09-23 19:43:43,679 INFO L226 Difference]: Without dead ends: 21 [2018-09-23 19:43:43,680 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=38, Invalid=233, Unknown=1, NotChecked=0, Total=272 [2018-09-23 19:43:43,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-23 19:43:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-23 19:43:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-23 19:43:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-23 19:43:43,689 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-09-23 19:43:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-23 19:43:43,689 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-23 19:43:43,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-23 19:43:43,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-23 19:43:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-23 19:43:43,690 INFO L367 BasicCegarLoop]: Found error trace [2018-09-23 19:43:43,690 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-09-23 19:43:43,690 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-23 19:43:43,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-23 19:43:43,691 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-09-23 19:43:43,691 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-23 19:43:43,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-23 19:43:43,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:43,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-23 19:43:43,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-23 19:43:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-23 19:43:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-23 19:43:43,738 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-09-23 19:43:43,777 INFO L202 PluginConnector]: Adding new model num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.09 07:43:43 BoogieIcfgContainer [2018-09-23 19:43:43,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-23 19:43:43,778 INFO L168 Benchmark]: Toolchain (without parser) took 19557.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 351.6 MB). Peak memory consumption was 351.6 MB. Max. memory is 7.1 GB. [2018-09-23 19:43:43,780 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:43:43,780 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:43:43,781 INFO L168 Benchmark]: Boogie Preprocessor took 25.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-23 19:43:43,782 INFO L168 Benchmark]: RCFGBuilder took 297.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-23 19:43:43,782 INFO L168 Benchmark]: TraceAbstraction took 19184.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 330.5 MB). Peak memory consumption was 330.5 MB. Max. memory is 7.1 GB. [2018-09-23 19:43:43,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 297.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 19184.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 330.5 MB). Peak memory consumption was 330.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: overapproximation of shiftLeft at line 39, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L15] havoc main_#res; [L16] havoc main_#t~nondet0, main_~i~6, main_~bit~6, main_~x~5, main_~y~5, main_~c~5; [L17] main_~x~5 := main_#t~nondet0; [L18] havoc main_#t~nondet0; [L19] havoc main_~y~5; [L20] havoc main_~c~5; [L21] main_~y~5 := 0; [L22] main_~c~5 := 0; VAL [main_~c~5=0, main_~y~5=0] [L25] assume true; VAL [main_~c~5=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=1, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=1, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=2, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=2, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=3, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=3, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=4, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=4, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=5, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=5, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=6, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=6, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=7, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=7, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~y~5=0] [L30] assume !(main_~c~5 % 256 < 8); [L31] __VERIFIER_assert_#in~cond := (if main_~x~5 % 256 == main_~y~5 % 256 then 1 else 0); [L32] havoc __VERIFIER_assert_~cond; [L33] __VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; [L34] assume __VERIFIER_assert_~cond == 0; [L35] assume !false; VAL [__VERIFIER_assert_#in~cond=0, __VERIFIER_assert_~cond=0, main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~x~5=1, main_~y~5=0] [L46] assert false; VAL [__VERIFIER_assert_#in~cond=0, __VERIFIER_assert_~cond=0, main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~x~5=1, main_~y~5=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. UNSAFE Result, 19.1s OverallTime, 9 OverallIterations, 9 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 0 SDslu, 254 SDs, 0 SdLazy, 334 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 50 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=8, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 16.0s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 157 ConstructedInterpolants, 56 QuantifiedInterpolants, 42529 SizeOfPredicates, 10 NumberOfNonLiveVariables, 301 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 15 InterpolantComputations, 1 PerfectInterpolantSequences, 0/336 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/num_conversion_2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-23_19-43-43-798.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/num_conversion_2.i_3.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-23_19-43-43-798.csv Received shutdown request...