java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 02:54:40,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 02:54:40,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 02:54:40,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 02:54:40,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 02:54:40,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 02:54:40,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 02:54:40,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 02:54:40,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 02:54:40,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 02:54:40,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 02:54:40,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-09-08 02:54:40,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 02:54:40,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 02:54:40,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 02:54:40,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 02:54:40,920 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 02:54:40,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 02:54:40,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 02:54:40,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 02:54:40,923 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 02:54:40,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 02:54:40,923 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 02:54:40,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 02:54:40,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 02:54:40,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 02:54:40,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 02:54:40,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 02:54:40,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 02:54:40,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 02:54:40,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 02:54:40,926 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 02:54:40,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 02:54:40,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 02:54:40,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 02:54:40,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 02:54:40,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 02:54:40,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:54:40,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 02:54:40,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 02:54:40,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 02:54:40,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 02:54:40,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 02:54:40,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 02:54:40,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 02:54:40,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 02:54:40,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 02:54:40,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 02:54:40,994 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 02:54:40,994 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 02:54:40,995 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2019-09-08 02:54:41,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab109a678/590b01d0d9ea44eaa34cf29b2d5781fa/FLAGdb44c3fa8 [2019-09-08 02:54:41,503 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 02:54:41,504 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2019-09-08 02:54:41,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab109a678/590b01d0d9ea44eaa34cf29b2d5781fa/FLAGdb44c3fa8 [2019-09-08 02:54:41,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab109a678/590b01d0d9ea44eaa34cf29b2d5781fa [2019-09-08 02:54:41,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 02:54:41,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 02:54:41,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 02:54:41,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 02:54:41,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 02:54:41,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:54:41" (1/1) ... [2019-09-08 02:54:41,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9ffc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:41, skipping insertion in model container [2019-09-08 02:54:41,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 02:54:41" (1/1) ... [2019-09-08 02:54:41,919 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 02:54:41,937 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 02:54:42,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:54:42,101 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 02:54:42,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 02:54:42,135 INFO L192 MainTranslator]: Completed translation [2019-09-08 02:54:42,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42 WrapperNode [2019-09-08 02:54:42,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 02:54:42,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 02:54:42,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 02:54:42,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 02:54:42,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... [2019-09-08 02:54:42,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... [2019-09-08 02:54:42,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... [2019-09-08 02:54:42,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... [2019-09-08 02:54:42,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... [2019-09-08 02:54:42,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... [2019-09-08 02:54:42,248 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... [2019-09-08 02:54:42,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 02:54:42,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 02:54:42,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 02:54:42,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 02:54:42,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 02:54:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 02:54:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 02:54:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-08 02:54:42,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 02:54:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 02:54:42,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 02:54:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-08 02:54:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 02:54:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 02:54:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 02:54:42,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 02:54:42,533 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 02:54:42,534 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 02:54:42,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:54:42 BoogieIcfgContainer [2019-09-08 02:54:42,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 02:54:42,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 02:54:42,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 02:54:42,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 02:54:42,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 02:54:41" (1/3) ... [2019-09-08 02:54:42,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7839dc5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:54:42, skipping insertion in model container [2019-09-08 02:54:42,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 02:54:42" (2/3) ... [2019-09-08 02:54:42,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7839dc5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 02:54:42, skipping insertion in model container [2019-09-08 02:54:42,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 02:54:42" (3/3) ... [2019-09-08 02:54:42,557 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2019-09-08 02:54:42,576 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 02:54:42,582 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 02:54:42,608 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 02:54:42,638 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 02:54:42,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 02:54:42,639 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 02:54:42,639 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 02:54:42,639 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 02:54:42,639 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 02:54:42,639 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 02:54:42,640 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 02:54:42,640 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 02:54:42,654 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-09-08 02:54:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 02:54:42,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:54:42,660 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:54:42,662 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:54:42,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:54:42,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1770779542, now seen corresponding path program 1 times [2019-09-08 02:54:42,668 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:54:42,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:54:42,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:54:42,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:54:42,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:54:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:54:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:54:42,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:54:42,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 02:54:42,875 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 02:54:42,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 02:54:42,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:54:42,888 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 6 states. [2019-09-08 02:54:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:54:43,009 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2019-09-08 02:54:43,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 02:54:43,010 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-09-08 02:54:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:54:43,017 INFO L225 Difference]: With dead ends: 51 [2019-09-08 02:54:43,017 INFO L226 Difference]: Without dead ends: 28 [2019-09-08 02:54:43,020 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 02:54:43,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-08 02:54:43,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-09-08 02:54:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-09-08 02:54:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2019-09-08 02:54:43,057 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2019-09-08 02:54:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:54:43,058 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2019-09-08 02:54:43,058 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 02:54:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2019-09-08 02:54:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-08 02:54:43,059 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:54:43,060 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:54:43,060 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:54:43,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:54:43,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1769173835, now seen corresponding path program 1 times [2019-09-08 02:54:43,061 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:54:43,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:54:43,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:54:43,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:54:43,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:54:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:54:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 02:54:43,199 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 02:54:43,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 02:54:43,202 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 02:54:43,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 02:54:43,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 02:54:43,203 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 6 states. [2019-09-08 02:54:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:54:43,285 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-09-08 02:54:43,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 02:54:43,286 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-09-08 02:54:43,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:54:43,288 INFO L225 Difference]: With dead ends: 38 [2019-09-08 02:54:43,289 INFO L226 Difference]: Without dead ends: 36 [2019-09-08 02:54:43,290 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 02:54:43,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-09-08 02:54:43,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-09-08 02:54:43,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-09-08 02:54:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2019-09-08 02:54:43,304 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 23 [2019-09-08 02:54:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:54:43,304 INFO L475 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2019-09-08 02:54:43,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 02:54:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2019-09-08 02:54:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-09-08 02:54:43,307 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 02:54:43,307 INFO L399 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 02:54:43,307 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 02:54:43,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 02:54:43,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1089945877, now seen corresponding path program 1 times [2019-09-08 02:54:43,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 02:54:43,308 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 02:54:43,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:54:43,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:54:43,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 02:54:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:54:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 02:54:43,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 02:54:43,450 INFO L223 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 [2019-09-08 02:54:43,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 02:54:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 02:54:43,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-08 02:54:43,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 02:54:43,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 02:54:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-08 02:54:43,697 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 02:54:43,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2019-09-08 02:54:43,698 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-08 02:54:43,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-08 02:54:43,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-08 02:54:43,699 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2019-09-08 02:54:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 02:54:43,929 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2019-09-08 02:54:43,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 02:54:43,929 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2019-09-08 02:54:43,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 02:54:43,930 INFO L225 Difference]: With dead ends: 41 [2019-09-08 02:54:43,930 INFO L226 Difference]: Without dead ends: 0 [2019-09-08 02:54:43,931 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2019-09-08 02:54:43,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-08 02:54:43,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-08 02:54:43,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-08 02:54:43,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-08 02:54:43,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2019-09-08 02:54:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 02:54:43,933 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-08 02:54:43,933 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-08 02:54:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-08 02:54:43,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-08 02:54:43,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-08 02:54:44,088 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-08 02:54:44,088 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-08 02:54:44,088 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-08 02:54:44,089 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-08 02:54:44,089 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-08 02:54:44,089 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-08 02:54:44,089 INFO L443 ceAbstractionStarter]: For program point L35-2(lines 35 39) no Hoare annotation was computed. [2019-09-08 02:54:44,089 INFO L439 ceAbstractionStarter]: At program point L35-3(lines 35 39) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= 1 main_~p~0)) [2019-09-08 02:54:44,089 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 42) no Hoare annotation was computed. [2019-09-08 02:54:44,090 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-09-08 02:54:44,090 INFO L446 ceAbstractionStarter]: At program point L40(lines 10 42) the Hoare annotation is: true [2019-09-08 02:54:44,090 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2019-09-08 02:54:44,090 INFO L439 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (and (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 1 main_~leader_len~0) (<= (+ main_~p~0 2) main_~bufsize_0~0) (<= 1 main_~p~0)) [2019-09-08 02:54:44,090 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-09-08 02:54:44,090 INFO L443 ceAbstractionStarter]: For program point L24-1(lines 11 42) no Hoare annotation was computed. [2019-09-08 02:54:44,091 INFO L443 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2019-09-08 02:54:44,091 INFO L443 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2019-09-08 02:54:44,091 INFO L443 ceAbstractionStarter]: For program point L25(lines 11 42) no Hoare annotation was computed. [2019-09-08 02:54:44,091 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-09-08 02:54:44,091 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 42) the Hoare annotation is: true [2019-09-08 02:54:44,091 INFO L443 ceAbstractionStarter]: For program point L26(lines 11 42) no Hoare annotation was computed. [2019-09-08 02:54:44,091 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-09-08 02:54:44,091 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-08 02:54:44,092 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-08 02:54:44,092 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-08 02:54:44,092 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-08 02:54:44,092 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-08 02:54:44,092 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-08 02:54:44,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 02:54:44 BoogieIcfgContainer [2019-09-08 02:54:44,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 02:54:44,109 INFO L168 Benchmark]: Toolchain (without parser) took 2206.06 ms. Allocated memory was 133.7 MB in the beginning and 226.5 MB in the end (delta: 92.8 MB). Free memory was 90.3 MB in the beginning and 165.1 MB in the end (delta: -74.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2019-09-08 02:54:44,110 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-08 02:54:44,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.89 ms. Allocated memory is still 133.7 MB. Free memory was 90.1 MB in the beginning and 80.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-08 02:54:44,112 INFO L168 Benchmark]: Boogie Preprocessor took 112.77 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 80.7 MB in the beginning and 176.9 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-08 02:54:44,113 INFO L168 Benchmark]: RCFGBuilder took 285.75 ms. Allocated memory is still 200.3 MB. Free memory was 176.9 MB in the beginning and 163.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-09-08 02:54:44,115 INFO L168 Benchmark]: TraceAbstraction took 1560.90 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 162.9 MB in the beginning and 165.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-09-08 02:54:44,126 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 133.7 MB. Free memory was 108.2 MB in the beginning and 108.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 231.89 ms. Allocated memory is still 133.7 MB. Free memory was 90.1 MB in the beginning and 80.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.77 ms. Allocated memory was 133.7 MB in the beginning and 200.3 MB in the end (delta: 66.6 MB). Free memory was 80.7 MB in the beginning and 176.9 MB in the end (delta: -96.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.75 ms. Allocated memory is still 200.3 MB. Free memory was 176.9 MB in the beginning and 163.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1560.90 ms. Allocated memory was 200.3 MB in the beginning and 226.5 MB in the end (delta: 26.2 MB). Free memory was 162.9 MB in the beginning and 165.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (p + 2 * ielen <= bufsize_0 + 2 * i && 1 <= leader_len) && 1 <= p - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 42 SDslu, 307 SDs, 0 SdLazy, 151 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 70 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 9578 SizeOfPredicates, 6 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 39/44 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...