/usr/bin/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:00:44,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:00:44,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:00:44,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 04:00:44,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:00:44,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:00:44,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:00:44,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:00:44,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:00:44,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:00:44,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:00:44,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:00:44,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:00:44,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:00:44,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:00:44,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:00:44,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:00:44,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:00:44,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:00:44,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:00:44,701 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 [2019-11-07 04:00:44,720 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:00:44,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:00:44,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:00:44,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:00:44,721 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:00:44,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:00:44,722 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:00:44,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:00:44,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:00:44,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:00:44,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:00:44,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:00:44,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:00:44,723 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:00:44,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:00:44,723 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:00:44,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:00:44,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:00:44,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:00:44,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:00:44,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:00:44,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:00:44,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:00:44,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:00:44,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:00:44,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:00:44,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:00:44,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:00:44,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:00:45,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:00:45,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:00:45,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:00:45,052 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:00:45,053 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:00:45,053 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2019-11-07 04:00:45,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5405b942/20414335842143179aaf0155b869a845/FLAG13e058ff5 [2019-11-07 04:00:45,543 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:00:45,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/MADWiFi-encode_ie_ok.i [2019-11-07 04:00:45,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5405b942/20414335842143179aaf0155b869a845/FLAG13e058ff5 [2019-11-07 04:00:45,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5405b942/20414335842143179aaf0155b869a845 [2019-11-07 04:00:45,960 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:00:45,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:00:45,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:45,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:00:45,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:00:45,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:45" (1/1) ... [2019-11-07 04:00:45,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb56b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:45, skipping insertion in model container [2019-11-07 04:00:45,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:45" (1/1) ... [2019-11-07 04:00:46,011 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:00:46,053 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:00:46,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:46,320 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:00:46,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:46,348 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:00:46,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46 WrapperNode [2019-11-07 04:00:46,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:46,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:00:46,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:00:46,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:00:46,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (1/1) ... [2019-11-07 04:00:46,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (1/1) ... [2019-11-07 04:00:46,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (1/1) ... [2019-11-07 04:00:46,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (1/1) ... [2019-11-07 04:00:46,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (1/1) ... [2019-11-07 04:00:46,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (1/1) ... [2019-11-07 04:00:46,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (1/1) ... [2019-11-07 04:00:46,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:00:46,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:00:46,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:00:46,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:00:46,454 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (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 [2019-11-07 04:00:46,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:00:46,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:00:46,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:00:46,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:00:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:00:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:00:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:00:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:00:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:00:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:00:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:00:46,778 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:00:46,778 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:00:46,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:46 BoogieIcfgContainer [2019-11-07 04:00:46,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:00:46,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:00:46,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:00:46,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:00:46,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:00:45" (1/3) ... [2019-11-07 04:00:46,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cf30d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:46, skipping insertion in model container [2019-11-07 04:00:46,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:46" (2/3) ... [2019-11-07 04:00:46,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10cf30d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:46, skipping insertion in model container [2019-11-07 04:00:46,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:46" (3/3) ... [2019-11-07 04:00:46,791 INFO L109 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2019-11-07 04:00:46,801 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:00:46,810 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:00:46,821 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:00:46,845 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:00:46,845 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:00:46,845 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:00:46,845 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:00:46,845 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:00:46,846 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:00:46,846 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:00:46,846 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:00:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-07 04:00:46,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-07 04:00:46,869 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:46,870 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:46,871 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:46,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:46,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1770779542, now seen corresponding path program 1 times [2019-11-07 04:00:46,884 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:46,884 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462275946] [2019-11-07 04:00:46,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:47,130 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462275946] [2019-11-07 04:00:47,131 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:00:47,132 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:00:47,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627832704] [2019-11-07 04:00:47,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:00:47,139 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:47,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:00:47,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:00:47,156 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2019-11-07 04:00:47,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:47,306 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2019-11-07 04:00:47,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:00:47,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-11-07 04:00:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:47,318 INFO L225 Difference]: With dead ends: 49 [2019-11-07 04:00:47,318 INFO L226 Difference]: Without dead ends: 27 [2019-11-07 04:00:47,324 INFO L630 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 [2019-11-07 04:00:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-07 04:00:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-07 04:00:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-07 04:00:47,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-07 04:00:47,359 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 18 [2019-11-07 04:00:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:47,359 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-07 04:00:47,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:00:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-07 04:00:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-07 04:00:47,361 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:47,361 INFO L410 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] [2019-11-07 04:00:47,362 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:47,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:47,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1769173835, now seen corresponding path program 1 times [2019-11-07 04:00:47,363 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:47,363 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113184151] [2019-11-07 04:00:47,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:47,473 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113184151] [2019-11-07 04:00:47,473 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:00:47,474 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:00:47,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453882181] [2019-11-07 04:00:47,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:00:47,477 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:47,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:00:47,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:00:47,478 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 6 states. [2019-11-07 04:00:47,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:47,582 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-11-07 04:00:47,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:00:47,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2019-11-07 04:00:47,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:47,585 INFO L225 Difference]: With dead ends: 37 [2019-11-07 04:00:47,586 INFO L226 Difference]: Without dead ends: 35 [2019-11-07 04:00:47,587 INFO L630 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 [2019-11-07 04:00:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-07 04:00:47,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-11-07 04:00:47,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-07 04:00:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2019-11-07 04:00:47,605 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 23 [2019-11-07 04:00:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:47,605 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2019-11-07 04:00:47,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:00:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2019-11-07 04:00:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-07 04:00:47,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:47,608 INFO L410 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] [2019-11-07 04:00:47,608 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:47,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1523372590, now seen corresponding path program 1 times [2019-11-07 04:00:47,609 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:47,610 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987835910] [2019-11-07 04:00:47,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 04:00:47,724 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987835910] [2019-11-07 04:00:47,724 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110461902] [2019-11-07 04:00:47,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:00:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:47,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 04:00:47,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:00:47,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:00:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:00:47,926 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:00:48,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 04:00:48,061 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [193523794] [2019-11-07 04:00:48,093 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2019-11-07 04:00:48,095 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:00:48,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:00:48,114 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:00:48,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:00:48,180 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:00:49,219 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-11-07 04:00:49,223 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:00:49,225 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:00:50,061 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:00:50,062 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8, 16] total 29 [2019-11-07 04:00:50,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132206440] [2019-11-07 04:00:50,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-07 04:00:50,064 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:50,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-07 04:00:50,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2019-11-07 04:00:50,066 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 29 states. [2019-11-07 04:00:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:50,732 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2019-11-07 04:00:50,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 04:00:50,733 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 35 [2019-11-07 04:00:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:50,734 INFO L225 Difference]: With dead ends: 39 [2019-11-07 04:00:50,734 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:00:50,736 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=970, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 04:00:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:00:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:00:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:00:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:00:50,736 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-11-07 04:00:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:50,737 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:00:50,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-07 04:00:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:00:50,738 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:00:50,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:00:50,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:00:51,167 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:00:51,167 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:00:51,167 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:00:51,167 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:00:51,167 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:00:51,168 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:00:51,168 INFO L439 ceAbstractionStarter]: At program point L35-3(lines 35 39) the Hoare annotation is: (and (< main_~ielen~0 1000000) (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 0 main_~i~0) (< main_~leader_len~0 1000000) (<= 1 main_~leader_len~0) (<= 0 main_~bufsize_0~0) (< 0 main_~ielen~0) (< main_~bufsize~0 1000000) (<= main_~bufsize_0~0 2000000) (<= 1 main_~p~0) (< 0 main_~bufsize~0)) [2019-11-07 04:00:51,168 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 42) no Hoare annotation was computed. [2019-11-07 04:00:51,169 INFO L443 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-07 04:00:51,169 INFO L446 ceAbstractionStarter]: At program point L40(lines 10 42) the Hoare annotation is: true [2019-11-07 04:00:51,169 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (< main_~ielen~0 1000000) (< main_~leader_len~0 1000000) (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 0 main_~i~0) (< 2 main_~bufsize~0) (< main_~i~0 main_~ielen~0) (< main_~bufsize~0 1000000) (< 0 main_~leader_len~0) (<= main_~bufsize_0~0 2000000) (<= 1 main_~p~0)) [2019-11-07 04:00:51,169 INFO L439 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (and (< main_~ielen~0 1000000) (< main_~leader_len~0 1000000) (<= (+ main_~p~0 (* 2 main_~ielen~0)) (+ main_~bufsize_0~0 (* 2 main_~i~0))) (<= 0 main_~i~0) (< 2 main_~bufsize~0) (< main_~i~0 main_~ielen~0) (< main_~bufsize~0 1000000) (< 0 main_~leader_len~0) (<= main_~bufsize_0~0 2000000) (<= 1 main_~p~0)) [2019-11-07 04:00:51,170 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-07 04:00:51,170 INFO L443 ceAbstractionStarter]: For program point L24-1(lines 11 42) no Hoare annotation was computed. [2019-11-07 04:00:51,170 INFO L443 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2019-11-07 04:00:51,170 INFO L443 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2019-11-07 04:00:51,170 INFO L443 ceAbstractionStarter]: For program point L25(lines 11 42) no Hoare annotation was computed. [2019-11-07 04:00:51,170 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-07 04:00:51,171 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 42) the Hoare annotation is: true [2019-11-07 04:00:51,171 INFO L443 ceAbstractionStarter]: For program point L26(lines 11 42) no Hoare annotation was computed. [2019-11-07 04:00:51,171 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-07 04:00:51,171 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 04:00:51,171 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 04:00:51,171 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:00:51,172 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 04:00:51,172 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 04:00:51,172 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:00:51,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:00:51 BoogieIcfgContainer [2019-11-07 04:00:51,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:00:51,195 INFO L168 Benchmark]: Toolchain (without parser) took 5229.24 ms. Allocated memory was 137.4 MB in the beginning and 288.9 MB in the end (delta: 151.5 MB). Free memory was 102.6 MB in the beginning and 221.6 MB in the end (delta: -119.0 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:51,201 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-07 04:00:51,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.91 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 MB in the beginning and 92.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:51,204 INFO L168 Benchmark]: Boogie Preprocessor took 103.13 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 178.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:51,206 INFO L168 Benchmark]: RCFGBuilder took 327.07 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 163.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:51,207 INFO L168 Benchmark]: TraceAbstraction took 4408.08 ms. Allocated memory was 199.8 MB in the beginning and 288.9 MB in the end (delta: 89.1 MB). Free memory was 163.3 MB in the beginning and 221.6 MB in the end (delta: -58.4 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:51,214 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 376.91 ms. Allocated memory is still 137.4 MB. Free memory was 102.2 MB in the beginning and 92.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.13 ms. Allocated memory was 137.4 MB in the beginning and 199.8 MB in the end (delta: 62.4 MB). Free memory was 92.4 MB in the beginning and 178.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.07 ms. Allocated memory is still 199.8 MB. Free memory was 178.3 MB in the beginning and 163.3 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4408.08 ms. Allocated memory was 199.8 MB in the beginning and 288.9 MB in the end (delta: 89.1 MB). Free memory was 163.3 MB in the beginning and 221.6 MB in the end (delta: -58.4 MB). Peak memory consumption was 30.7 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: (((((((((ielen < 1000000 && p + 2 * ielen <= bufsize_0 + 2 * i) && 0 <= i) && leader_len < 1000000) && 1 <= leader_len) && 0 <= bufsize_0) && 0 < ielen) && bufsize < 1000000) && bufsize_0 <= 2000000) && 1 <= p) && 0 < bufsize - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Result: SAFE, OverallTime: 4.3s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 65 SDtfs, 89 SDslu, 249 SDs, 0 SdLazy, 261 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 28 NumberOfFragments, 126 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 289 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 12239 SizeOfPredicates, 9 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 57/65 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 1132, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 30, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 26, TOOLS_POST_TIME[ms]: 12, TOOLS_POST_CALL_APPLICATIONS: 22, TOOLS_POST_CALL_TIME[ms]: 388, TOOLS_POST_RETURN_APPLICATIONS: 18, TOOLS_POST_RETURN_TIME[ms]: 36, TOOLS_QUANTIFIERELIM_APPLICATIONS: 66, TOOLS_QUANTIFIERELIM_TIME[ms]: 406, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 114, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 86, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 17, DOMAIN_JOIN_TIME[ms]: 480, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 66, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 30, DOMAIN_ISBOTTOM_TIME[ms]: 46, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 900, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 899, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 18, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 7, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 7, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 5, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 26, DAG_COMPRESSION_PROCESSED_NODES: 180, DAG_COMPRESSION_RETAINED_NODES: 74, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...