/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/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:00:47,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:00:47,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:00:47,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:00:47,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:00:47,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:00:47,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:00:47,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:00:47,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:00:47,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:00:47,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:00:47,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:00:47,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:00:47,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:00:47,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:00:47,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:00:47,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:00:47,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:00:47,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:00:47,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:00:47,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:00:47,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:00:47,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:00:47,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:00:47,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:00:47,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:00:47,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:00:47,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:00:47,395 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 04:00:47,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:00:47,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:00:47,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:00:47,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:00:47,410 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:00:47,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:00:47,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:00:47,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:00:47,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:00:47,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:00:47,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:00:47,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:00:47,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:00:47,412 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:00:47,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:00:47,412 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:00:47,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:00:47,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:00:47,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:00:47,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:00:47,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:00:47,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:00:47,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:00:47,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:00:47,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:00:47,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:00:47,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:00:47,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:00:47,415 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 04:00:47,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:00:47,754 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:00:47,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:00:47,759 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:00:47,760 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:00:47,761 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-11-07 04:00:47,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a2f62ea/2f6b293de510425fa68b7bb9fc068c5d/FLAG55114d420 [2019-11-07 04:00:48,249 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:00:48,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-11-07 04:00:48,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a2f62ea/2f6b293de510425fa68b7bb9fc068c5d/FLAG55114d420 [2019-11-07 04:00:48,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a2f62ea/2f6b293de510425fa68b7bb9fc068c5d [2019-11-07 04:00:48,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:00:48,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:00:48,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:48,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:00:48,711 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:00:48,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:48" (1/1) ... [2019-11-07 04:00:48,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b5e08e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:48, skipping insertion in model container [2019-11-07 04:00:48,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:48" (1/1) ... [2019-11-07 04:00:48,741 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:00:48,785 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:00:49,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:49,117 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:00:49,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:49,155 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:00:49,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49 WrapperNode [2019-11-07 04:00:49,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:49,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:00:49,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:00:49,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:00:49,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (1/1) ... [2019-11-07 04:00:49,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (1/1) ... [2019-11-07 04:00:49,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (1/1) ... [2019-11-07 04:00:49,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (1/1) ... [2019-11-07 04:00:49,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (1/1) ... [2019-11-07 04:00:49,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (1/1) ... [2019-11-07 04:00:49,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (1/1) ... [2019-11-07 04:00:49,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:00:49,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:00:49,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:00:49,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:00:49,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (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 04:00:49,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:00:49,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:00:49,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:00:49,374 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:00:49,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:00:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:00:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:00:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:00:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:00:49,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:00:49,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:00:49,687 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:00:49,687 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:00:49,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:49 BoogieIcfgContainer [2019-11-07 04:00:49,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:00:49,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:00:49,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:00:49,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:00:49,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:00:48" (1/3) ... [2019-11-07 04:00:49,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795549bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:49, skipping insertion in model container [2019-11-07 04:00:49,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:49" (2/3) ... [2019-11-07 04:00:49,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@795549bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:49, skipping insertion in model container [2019-11-07 04:00:49,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:49" (3/3) ... [2019-11-07 04:00:49,697 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-11-07 04:00:49,707 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:00:49,715 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:00:49,727 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:00:49,750 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:00:49,750 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:00:49,750 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:00:49,750 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:00:49,752 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:00:49,752 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:00:49,752 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:00:49,752 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:00:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-07 04:00:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:00:49,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:49,773 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:49,775 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:49,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:49,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1006006752, now seen corresponding path program 1 times [2019-11-07 04:00:49,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:49,788 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317118790] [2019-11-07 04:00:49,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:49,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:49,988 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 04:00:49,989 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317118790] [2019-11-07 04:00:49,990 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:00:49,990 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:00:49,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641836226] [2019-11-07 04:00:49,998 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:00:49,998 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:50,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:00:50,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:00:50,017 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-11-07 04:00:50,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:50,123 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-11-07 04:00:50,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:00:50,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-11-07 04:00:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:50,131 INFO L225 Difference]: With dead ends: 40 [2019-11-07 04:00:50,132 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 04:00:50,135 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:00:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 04:00:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-07 04:00:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-07 04:00:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-07 04:00:50,174 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2019-11-07 04:00:50,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:50,174 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-07 04:00:50,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:00:50,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-07 04:00:50,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 04:00:50,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:50,176 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:50,176 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:50,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:50,177 INFO L82 PathProgramCache]: Analyzing trace with hash 859609374, now seen corresponding path program 1 times [2019-11-07 04:00:50,177 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:50,177 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236226904] [2019-11-07 04:00:50,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:50,252 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 04:00:50,253 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236226904] [2019-11-07 04:00:50,253 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:00:50,253 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 04:00:50,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003681802] [2019-11-07 04:00:50,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 04:00:50,255 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:50,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 04:00:50,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 04:00:50,256 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-07 04:00:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:50,320 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-11-07 04:00:50,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 04:00:50,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-11-07 04:00:50,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:50,323 INFO L225 Difference]: With dead ends: 30 [2019-11-07 04:00:50,323 INFO L226 Difference]: Without dead ends: 28 [2019-11-07 04:00:50,324 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:00:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-07 04:00:50,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-11-07 04:00:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-07 04:00:50,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-07 04:00:50,338 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-11-07 04:00:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:50,338 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-07 04:00:50,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 04:00:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-07 04:00:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-07 04:00:50,341 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:50,341 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:50,341 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:50,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1549601922, now seen corresponding path program 1 times [2019-11-07 04:00:50,342 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:50,342 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977690959] [2019-11-07 04:00:50,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:50,445 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 04:00:50,445 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977690959] [2019-11-07 04:00:50,446 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324669203] [2019-11-07 04:00:50,446 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 04:00:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:50,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-07 04:00:50,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:00:50,613 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:00:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:00:50,650 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:00:50,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:00:50,729 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:00:50,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:00:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 04:00:50,762 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [450784009] [2019-11-07 04:00:50,786 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-07 04:00:50,787 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:00:50,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:00:50,800 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:00:50,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:00:50,873 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:00:51,564 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-11-07 04:00:51,569 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:00:51,571 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:00:51,779 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2019-11-07 04:00:51,974 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2019-11-07 04:00:52,197 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:00:52,198 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8, 10] total 23 [2019-11-07 04:00:52,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206331434] [2019-11-07 04:00:52,200 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-07 04:00:52,200 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:52,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-07 04:00:52,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2019-11-07 04:00:52,203 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 23 states. [2019-11-07 04:00:52,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:52,689 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2019-11-07 04:00:52,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 04:00:52,690 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2019-11-07 04:00:52,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:52,691 INFO L225 Difference]: With dead ends: 36 [2019-11-07 04:00:52,691 INFO L226 Difference]: Without dead ends: 34 [2019-11-07 04:00:52,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2019-11-07 04:00:52,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-07 04:00:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-11-07 04:00:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-07 04:00:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-11-07 04:00:52,701 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2019-11-07 04:00:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:52,702 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-11-07 04:00:52,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-07 04:00:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-11-07 04:00:52,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-07 04:00:52,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:52,704 INFO L410 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:52,907 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:00:52,907 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:52,909 INFO L82 PathProgramCache]: Analyzing trace with hash 745848286, now seen corresponding path program 2 times [2019-11-07 04:00:52,909 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:52,910 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333194529] [2019-11-07 04:00:52,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 04:00:53,002 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333194529] [2019-11-07 04:00:53,003 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16020293] [2019-11-07 04:00:53,003 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:00:53,047 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 04:00:53,047 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:00:53,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-07 04:00:53,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:00:53,109 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 04:00:53,109 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:00:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 04:00:53,197 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1572685192] [2019-11-07 04:00:53,198 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-07 04:00:53,199 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:00:53,199 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:00:53,199 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:00:53,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:00:53,215 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:00:53,677 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-11-07 04:00:53,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:00:53,684 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:00:53,867 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 32 [2019-11-07 04:00:54,008 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2019-11-07 04:00:54,265 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:00:54,265 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8, 10] total 22 [2019-11-07 04:00:54,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899123474] [2019-11-07 04:00:54,267 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-07 04:00:54,267 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:54,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-07 04:00:54,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2019-11-07 04:00:54,268 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 22 states. [2019-11-07 04:00:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:54,525 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-11-07 04:00:54,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:00:54,525 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2019-11-07 04:00:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:54,526 INFO L225 Difference]: With dead ends: 33 [2019-11-07 04:00:54,526 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:00:54,527 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2019-11-07 04:00:54,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:00:54,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:00:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:00:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:00:54,529 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-11-07 04:00:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:54,529 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:00:54,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-07 04:00:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:00:54,529 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:00:54,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:00:54,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:00:54,877 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2019-11-07 04:00:54,992 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 31 [2019-11-07 04:00:55,103 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 28 [2019-11-07 04:00:55,106 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 04:00:55,106 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:00:55,106 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:00:55,106 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:00:55,106 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:00:55,106 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:00:55,107 INFO L446 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-11-07 04:00:55,107 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 31) the Hoare annotation is: true [2019-11-07 04:00:55,107 INFO L443 ceAbstractionStarter]: For program point L28(lines 24 29) no Hoare annotation was computed. [2019-11-07 04:00:55,108 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (let ((.cse0 (= main_~pathbuf_off~0 0))) (or (and .cse0 (= main_~bound_off~0 main_~glob2_pathlim_off~0) (< 0 main_~MAXPATHLEN~0) (= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (< main_~MAXPATHLEN~0 2147483647) (= main_~glob2_pathbuf_off~0 main_~glob2_p_off~0)) (and .cse0 (<= 1 main_~glob2_p_off~0)))) (<= main_~glob2_p_off~0 main_~glob2_pathlim_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~bound_off~0) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= main_~glob2_pathbuf_off~0 0)) [2019-11-07 04:00:55,109 INFO L439 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (let ((.cse0 (= main_~pathbuf_off~0 0))) (or (and .cse0 (= main_~bound_off~0 main_~glob2_pathlim_off~0) (< 0 main_~MAXPATHLEN~0) (= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (< main_~MAXPATHLEN~0 2147483647) (= main_~glob2_pathbuf_off~0 main_~glob2_p_off~0)) (and .cse0 (<= 1 main_~glob2_p_off~0)))) (<= main_~glob2_p_off~0 main_~glob2_pathlim_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~bound_off~0) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= main_~glob2_pathbuf_off~0 0)) [2019-11-07 04:00:55,109 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 31) no Hoare annotation was computed. [2019-11-07 04:00:55,109 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: (and (<= 0 main_~glob2_pathlim_off~0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (let ((.cse0 (= main_~pathbuf_off~0 0))) (or (and .cse0 (= main_~bound_off~0 main_~glob2_pathlim_off~0) (< 0 main_~MAXPATHLEN~0) (= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (< main_~MAXPATHLEN~0 2147483647) (= main_~glob2_pathbuf_off~0 main_~glob2_p_off~0)) (and .cse0 (<= 1 main_~glob2_p_off~0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 2))))) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~bound_off~0) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= main_~glob2_pathbuf_off~0 0)) [2019-11-07 04:00:55,109 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-11-07 04:00:55,109 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-11-07 04:00:55,109 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:00:55,110 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-07 04:00:55,110 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-07 04:00:55,110 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-07 04:00:55,110 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-11-07 04:00:55,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:00:55 BoogieIcfgContainer [2019-11-07 04:00:55,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:00:55,150 INFO L168 Benchmark]: Toolchain (without parser) took 6448.71 ms. Allocated memory was 145.2 MB in the beginning and 274.2 MB in the end (delta: 129.0 MB). Free memory was 101.6 MB in the beginning and 208.7 MB in the end (delta: -107.1 MB). Peak memory consumption was 134.4 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:55,151 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:00:55,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.45 ms. Allocated memory is still 145.2 MB. Free memory was 101.4 MB in the beginning and 92.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:55,153 INFO L168 Benchmark]: Boogie Preprocessor took 152.40 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 92.1 MB in the beginning and 182.0 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:55,153 INFO L168 Benchmark]: RCFGBuilder took 378.94 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 169.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:55,157 INFO L168 Benchmark]: TraceAbstraction took 5453.31 ms. Allocated memory was 203.9 MB in the beginning and 274.2 MB in the end (delta: 70.3 MB). Free memory was 169.2 MB in the beginning and 208.7 MB in the end (delta: -39.5 MB). Peak memory consumption was 143.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:55,165 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 453.45 ms. Allocated memory is still 145.2 MB. Free memory was 101.4 MB in the beginning and 92.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.40 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 92.1 MB in the beginning and 182.0 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.94 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 169.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5453.31 ms. Allocated memory was 203.9 MB in the beginning and 274.2 MB in the end (delta: 70.3 MB). Free memory was 169.2 MB in the beginning and 208.7 MB in the end (delta: -39.5 MB). Peak memory consumption was 143.3 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: 24]: Loop Invariant Derived loop invariant: ((((((0 <= glob2_pathlim_off && glob2_pathlim_off <= MAXPATHLEN) && ((((((pathbuf_off == 0 && bound_off == glob2_pathlim_off) && 0 < MAXPATHLEN) && bound_off == pathbuf_off + MAXPATHLEN) && MAXPATHLEN < 2147483647) && glob2_pathbuf_off == glob2_p_off) || ((pathbuf_off == 0 && 1 <= glob2_p_off) && glob2_p_off < MAXPATHLEN + 2))) && 0 <= glob2_pathbuf_off) && 0 <= bound_off) && MAXPATHLEN <= 2147483647) && bound_off <= 2147483647) && glob2_pathbuf_off <= 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 5.3s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 52 SDtfs, 49 SDslu, 224 SDs, 0 SdLazy, 232 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 174 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 164 HoareAnnotationTreeSize, 16 FomulaSimplifications, 149 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 376 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 163 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 223 ConstructedInterpolants, 0 QuantifiedInterpolants, 17579 SizeOfPredicates, 14 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 208/245 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 1271, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 46, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 42, TOOLS_POST_TIME[ms]: 17, TOOLS_POST_CALL_APPLICATIONS: 44, TOOLS_POST_CALL_TIME[ms]: 228, TOOLS_POST_RETURN_APPLICATIONS: 36, TOOLS_POST_RETURN_TIME[ms]: 52, TOOLS_QUANTIFIERELIM_APPLICATIONS: 122, TOOLS_QUANTIFIERELIM_TIME[ms]: 253, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 33, FLUID_QUERY_TIME[ms]: 7, FLUID_QUERIES: 154, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 30, DOMAIN_JOIN_TIME[ms]: 622, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 159, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 14, DOMAIN_ISBOTTOM_APPLICATIONS: 46, DOMAIN_ISBOTTOM_TIME[ms]: 72, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 771, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 769, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 36, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME[ms]: 9, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 8, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 5, DAG_COMPRESSION_TIME[ms]: 28, DAG_COMPRESSION_PROCESSED_NODES: 270, DAG_COMPRESSION_RETAINED_NODES: 126, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...