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 0.1.24-36ac518-m [2019-10-07 13:39:48,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:39:48,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:39:48,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:39:48,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:39:48,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:39:48,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:39:48,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:39:48,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:39:48,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:39:48,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:39:48,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:39:48,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:39:48,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:39:48,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:39:48,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:39:48,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:39:48,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:39:48,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:39:48,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:39:48,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:39:48,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:39:48,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:39:48,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:39:48,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 13:39:48,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:39:48,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:39:48,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:39:48,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:39:48,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:39:48,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:39:48,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:39:48,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:39:48,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:39:48,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:39:48,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:39:48,395 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 [2019-10-07 13:39:48,424 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:39:48,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:39:48,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:39:48,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:39:48,425 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:39:48,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:39:48,426 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:39:48,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:39:48,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:39:48,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:39:48,427 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:39:48,427 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:39:48,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:39:48,427 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:39:48,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:39:48,428 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:39:48,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:39:48,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:39:48,428 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:39:48,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:39:48,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:39:48,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:39:48,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:39:48,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:39:48,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:39:48,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:39:48,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:39:48,430 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:39:48,430 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 [2019-10-07 13:39:48,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:39:48,718 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:39:48,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:39:48,722 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:39:48,723 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:39:48,725 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-10-07 13:39:48,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc4e697b/84f62295b34d4b46b08eb84ff7df1352/FLAGc4a6bdd84 [2019-10-07 13:39:49,219 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:39:49,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-10-07 13:39:49,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc4e697b/84f62295b34d4b46b08eb84ff7df1352/FLAGc4a6bdd84 [2019-10-07 13:39:49,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cc4e697b/84f62295b34d4b46b08eb84ff7df1352 [2019-10-07 13:39:49,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:39:49,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:39:49,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:39:49,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:39:49,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:39:49,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c279152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49, skipping insertion in model container [2019-10-07 13:39:49,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,648 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:39:49,664 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:39:49,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:39:49,845 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:39:49,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:39:49,876 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:39:49,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49 WrapperNode [2019-10-07 13:39:49,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:39:49,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:39:49,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:39:49,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:39:49,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:49,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (1/1) ... [2019-10-07 13:39:50,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:39:50,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:39:50,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:39:50,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:39:50,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (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 [2019-10-07 13:39:50,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:39:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:39:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:39:50,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:39:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:39:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:39:50,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:39:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:39:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:39:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:39:50,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:39:50,252 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:39:50,252 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:39:50,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:39:50 BoogieIcfgContainer [2019-10-07 13:39:50,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:39:50,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:39:50,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:39:50,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:39:50,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:39:49" (1/3) ... [2019-10-07 13:39:50,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c37dc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:39:50, skipping insertion in model container [2019-10-07 13:39:50,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:39:49" (2/3) ... [2019-10-07 13:39:50,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c37dc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:39:50, skipping insertion in model container [2019-10-07 13:39:50,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:39:50" (3/3) ... [2019-10-07 13:39:50,261 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-10-07 13:39:50,270 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:39:50,278 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:39:50,289 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:39:50,315 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:39:50,315 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:39:50,316 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:39:50,316 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:39:50,316 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:39:50,316 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:39:50,316 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:39:50,316 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:39:50,341 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-07 13:39:50,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:39:50,349 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:39:50,350 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:39:50,352 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:39:50,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:39:50,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1006006752, now seen corresponding path program 1 times [2019-10-07 13:39:50,371 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:39:50,372 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:50,372 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:50,372 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:39:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:39:50,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:39:50,569 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:50,570 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:39:50,570 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:39:50,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:39:50,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:39:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:39:50,588 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-10-07 13:39:50,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:39:50,679 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-10-07 13:39:50,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:39:50,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-07 13:39:50,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:39:50,689 INFO L225 Difference]: With dead ends: 40 [2019-10-07 13:39:50,689 INFO L226 Difference]: Without dead ends: 20 [2019-10-07 13:39:50,692 INFO L606 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 [2019-10-07 13:39:50,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-07 13:39:50,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-07 13:39:50,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-07 13:39:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-10-07 13:39:50,734 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2019-10-07 13:39:50,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:39:50,734 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-10-07 13:39:50,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:39:50,734 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-10-07 13:39:50,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-07 13:39:50,735 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:39:50,736 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:39:50,736 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:39:50,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:39:50,737 INFO L82 PathProgramCache]: Analyzing trace with hash 859609374, now seen corresponding path program 1 times [2019-10-07 13:39:50,737 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:39:50,737 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:50,737 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:50,738 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:39:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:39:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:39:50,803 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:50,804 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:39:50,804 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:39:50,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:39:50,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:39:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:39:50,807 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-10-07 13:39:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:39:50,861 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-10-07 13:39:50,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:39:50,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-07 13:39:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:39:50,864 INFO L225 Difference]: With dead ends: 30 [2019-10-07 13:39:50,865 INFO L226 Difference]: Without dead ends: 28 [2019-10-07 13:39:50,866 INFO L606 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 [2019-10-07 13:39:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-07 13:39:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-07 13:39:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-07 13:39:50,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-10-07 13:39:50,881 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-10-07 13:39:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:39:50,881 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-10-07 13:39:50,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:39:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-10-07 13:39:50,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-07 13:39:50,884 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:39:50,884 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:39:50,884 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:39:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:39:50,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1549601922, now seen corresponding path program 1 times [2019-10-07 13:39:50,885 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:39:50,885 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:50,886 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:50,886 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:39:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:39:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 13:39:51,043 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:51,044 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:39:51,044 INFO L95 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 [2019-10-07 13:39:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:39:51,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-07 13:39:51,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:39:51,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:39:51,265 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:39:51,266 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:39:51,323 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:39:51,344 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:39:51,345 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:39:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:39:51,375 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:39:51,416 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 13:39:51,416 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:39:51,422 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:39:51,431 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:39:51,431 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:39:51,507 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:39:53,965 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-07 13:39:53,998 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:39:54,003 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:39:54,003 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:39:54,004 INFO L193 IcfgInterpreter]: Reachable states at location L4-2 satisfy 701#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-07 13:39:54,004 INFO L193 IcfgInterpreter]: Reachable states at location L24-2 satisfy 471#(and (<= 0 main_~glob2_p_off~0) (or (and (= main_~bound_off~0 main_~glob2_pathlim_off~0) (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (< 0 main_~MAXPATHLEN~0) (= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~glob2_p_off~0 0) (<= main_~glob2_p_off~0 2147483649) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (= main_~pathbuf_off~0 main_~glob2_pathbuf_off~0) (= main_~pathbuf_off~0 0) (<= 0 (+ main_~MAXPATHLEN~0 2147483648)) (< main_~MAXPATHLEN~0 2147483647) (= main_~glob2_pathbuf_off~0 main_~glob2_p_off~0)) (and (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 2)) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~glob2_p_off~0 2147483649) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (= main_~pathbuf_off~0 0) (<= 1 main_~glob2_p_off~0))) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)) [2019-10-07 13:39:54,004 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 710#true [2019-10-07 13:39:54,004 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 706#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-07 13:39:54,005 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 686#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1)))) [2019-10-07 13:39:54,005 INFO L193 IcfgInterpreter]: Reachable states at location L27-1 satisfy 677#(and (= main_~pathbuf_off~0 0) (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)) [2019-10-07 13:39:54,005 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:39:54,005 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:39:54,006 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 343#(and (or (and (<= 0 main_~glob2_pathlim_off~0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 2)) (<= main_~glob2_p_off~0 2147483649) (= main_~pathbuf_off~0 0) (<= main_~glob2_p_off~0 main_~glob2_pathlim_off~0)) (and (<= 0 main_~glob2_pathlim_off~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0))) (or (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 2147483647) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= 0 main_~pathbuf_off~0) (<= 1 main_~glob2_pathlim_off~0) (<= main_~glob2_pathbuf_off~0 0)) (and (<= main_~glob2_p_off~0 2147483647) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)))) [2019-10-07 13:39:54,006 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 715#true [2019-10-07 13:39:54,007 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 696#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:39:54,007 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:39:54,007 INFO L193 IcfgInterpreter]: Reachable states at location L28 satisfy 580#(and (<= main_~glob2_p_off~0 2147483648) (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (= main_~pathbuf_off~0 0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)) [2019-10-07 13:39:54,008 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 691#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:39:54,008 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 38#(and (<= 0 (+ main_~MAXPATHLEN~0 2147483648)) (<= main_~MAXPATHLEN~0 2147483647)) [2019-10-07 13:39:54,008 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 681#(and (or (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)))) [2019-10-07 13:39:54,213 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2019-10-07 13:39:54,562 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:39:54,562 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8, 10] total 23 [2019-10-07 13:39:54,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 13:39:54,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 13:39:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2019-10-07 13:39:54,566 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 23 states. [2019-10-07 13:39:55,036 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-10-07 13:39:55,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:39:55,203 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2019-10-07 13:39:55,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 13:39:55,204 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2019-10-07 13:39:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:39:55,205 INFO L225 Difference]: With dead ends: 37 [2019-10-07 13:39:55,205 INFO L226 Difference]: Without dead ends: 35 [2019-10-07 13:39:55,206 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2019-10-07 13:39:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-07 13:39:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-10-07 13:39:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-07 13:39:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-10-07 13:39:55,220 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2019-10-07 13:39:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:39:55,221 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-10-07 13:39:55,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 13:39:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-10-07 13:39:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-07 13:39:55,223 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:39:55,223 INFO L385 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:39:55,426 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:39:55,426 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:39:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:39:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 745848286, now seen corresponding path program 2 times [2019-10-07 13:39:55,427 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:39:55,427 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:55,427 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:55,428 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:39:55,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:39:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:39:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-07 13:39:55,515 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:39:55,515 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:39:55,516 INFO L93 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 [2019-10-07 13:39:55,578 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-07 13:39:55,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-07 13:39:55,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 13:39:55,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:39:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 13:39:55,628 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:39:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-07 13:39:55,709 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:39:55,710 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-07 13:39:55,710 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:39:55,710 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:39:55,711 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:39:55,711 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:39:55,721 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-07 13:39:57,225 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-07 13:39:57,244 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-07 13:39:57,246 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 13:39:57,246 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 13:39:57,246 INFO L193 IcfgInterpreter]: Reachable states at location L4-2 satisfy 705#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-07 13:39:57,247 INFO L193 IcfgInterpreter]: Reachable states at location L24-2 satisfy 473#(and (<= 0 main_~glob2_p_off~0) (or (and (= main_~bound_off~0 main_~glob2_pathlim_off~0) (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (< 0 main_~MAXPATHLEN~0) (= main_~bound_off~0 (+ main_~pathbuf_off~0 main_~MAXPATHLEN~0)) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~glob2_p_off~0 0) (<= main_~glob2_p_off~0 2147483649) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (= main_~pathbuf_off~0 main_~glob2_pathbuf_off~0) (= main_~pathbuf_off~0 0) (<= 0 (+ main_~MAXPATHLEN~0 2147483648)) (< main_~MAXPATHLEN~0 2147483647) (= main_~glob2_pathbuf_off~0 main_~glob2_p_off~0)) (and (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 2)) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~glob2_p_off~0 2147483649) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (= main_~pathbuf_off~0 0) (<= 1 main_~glob2_p_off~0))) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)) [2019-10-07 13:39:57,247 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 714#true [2019-10-07 13:39:57,247 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 710#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-07 13:39:57,248 INFO L193 IcfgInterpreter]: Reachable states at location L4 satisfy 690#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1)))) [2019-10-07 13:39:57,248 INFO L193 IcfgInterpreter]: Reachable states at location L27-1 satisfy 681#(and (= main_~pathbuf_off~0 0) (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)) [2019-10-07 13:39:57,248 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-07 13:39:57,248 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-07 13:39:57,249 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 343#(and (or (and (<= 0 main_~glob2_pathlim_off~0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 2)) (<= main_~glob2_p_off~0 2147483649) (= main_~pathbuf_off~0 0) (<= main_~glob2_p_off~0 main_~glob2_pathlim_off~0)) (and (<= 0 main_~glob2_pathlim_off~0) (<= 0 main_~glob2_p_off~0) (= main_~pathbuf_off~0 0))) (or (and (<= 1 main_~glob2_p_off~0) (<= main_~glob2_p_off~0 2147483647) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= 0 main_~pathbuf_off~0) (<= 1 main_~glob2_pathlim_off~0) (<= main_~glob2_pathbuf_off~0 0)) (and (<= main_~glob2_p_off~0 2147483647) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)))) [2019-10-07 13:39:57,249 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 719#true [2019-10-07 13:39:57,249 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 700#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:39:57,250 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 13:39:57,250 INFO L193 IcfgInterpreter]: Reachable states at location L28 satisfy 582#(and (<= main_~glob2_p_off~0 2147483648) (<= 0 main_~glob2_pathlim_off~0) (<= main_~pathbuf_off~0 0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~MAXPATHLEN~0) (<= 0 main_~bound_off~0) (<= main_~glob2_pathlim_off~0 2147483647) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (= main_~pathbuf_off~0 0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)) [2019-10-07 13:39:57,250 INFO L193 IcfgInterpreter]: Reachable states at location L5 satisfy 695#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-07 13:39:57,250 INFO L193 IcfgInterpreter]: Reachable states at location L19 satisfy 38#(and (<= 0 (+ main_~MAXPATHLEN~0 2147483648)) (<= main_~MAXPATHLEN~0 2147483647)) [2019-10-07 13:39:57,250 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 685#(and (or (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)))) [2019-10-07 13:39:57,447 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2019-10-07 13:39:57,753 INFO L211 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-07 13:39:57,753 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8, 10] total 22 [2019-10-07 13:39:57,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-07 13:39:57,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-07 13:39:57,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2019-10-07 13:39:57,755 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 22 states. [2019-10-07 13:39:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:39:58,030 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-07 13:39:58,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 13:39:58,032 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2019-10-07 13:39:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:39:58,033 INFO L225 Difference]: With dead ends: 33 [2019-10-07 13:39:58,033 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 13:39:58,034 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2019-10-07 13:39:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 13:39:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 13:39:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 13:39:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 13:39:58,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-10-07 13:39:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:39:58,036 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 13:39:58,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-07 13:39:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 13:39:58,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 13:39:58,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:39:58,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 13:39:58,439 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2019-10-07 13:39:58,665 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2019-10-07 13:39:58,864 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2019-10-07 13:39:58,867 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-07 13:39:58,867 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:39:58,867 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:39:58,867 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-07 13:39:58,867 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 13:39:58,867 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 13:39:58,868 INFO L446 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-10-07 13:39:58,868 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 31) the Hoare annotation is: true [2019-10-07 13:39:58,868 INFO L443 ceAbstractionStarter]: For program point L28(lines 24 29) no Hoare annotation was computed. [2019-10-07 13:39:58,868 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (and (= main_~pathbuf_off~0 0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~bound_off~0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (or (and (<= 0 main_~glob2_pathlim_off~0) (<= 1 main_~glob2_p_off~0)) (and (= 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 0)) [2019-10-07 13:39:58,869 INFO L439 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (and (= main_~pathbuf_off~0 0) (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0) (<= 0 main_~glob2_pathbuf_off~0) (<= 0 main_~bound_off~0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (<= main_~MAXPATHLEN~0 2147483647) (<= main_~bound_off~0 2147483647) (or (and (<= 0 main_~glob2_pathlim_off~0) (<= 1 main_~glob2_p_off~0)) (and (= 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 0)) [2019-10-07 13:39:58,869 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 31) no Hoare annotation was computed. [2019-10-07 13:39:58,869 INFO L439 ceAbstractionStarter]: At program point L24-2(lines 24 29) the Hoare annotation is: (and (<= main_~glob2_pathlim_off~0 main_~MAXPATHLEN~0) (or (and (<= 0 main_~glob2_pathlim_off~0) (<= 1 main_~glob2_p_off~0) (<= main_~pathbuf_off~0 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)) (and (= 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))) (<= 0 main_~glob2_p_off~0) (<= 0 main_~pathbuf_off~0) (<= main_~glob2_pathbuf_off~0 0)) [2019-10-07 13:39:58,870 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-07 13:39:58,870 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-07 13:39:58,870 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-07 13:39:58,870 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:39:58,870 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-07 13:39:58,870 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-07 13:39:58,871 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:39:58,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:39:58 BoogieIcfgContainer [2019-10-07 13:39:58,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:39:58,907 INFO L168 Benchmark]: Toolchain (without parser) took 9274.42 ms. Allocated memory was 144.7 MB in the beginning and 340.8 MB in the end (delta: 196.1 MB). Free memory was 103.2 MB in the beginning and 104.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 195.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:39:58,908 INFO L168 Benchmark]: CDTParser took 2.62 ms. Allocated memory is still 144.7 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:39:58,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.84 ms. Allocated memory is still 144.7 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:39:58,912 INFO L168 Benchmark]: Boogie Preprocessor took 123.00 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 93.6 MB in the beginning and 183.3 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-07 13:39:58,914 INFO L168 Benchmark]: RCFGBuilder took 252.76 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 170.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:39:58,915 INFO L168 Benchmark]: TraceAbstraction took 8648.42 ms. Allocated memory was 204.5 MB in the beginning and 340.8 MB in the end (delta: 136.3 MB). Free memory was 170.1 MB in the beginning and 104.3 MB in the end (delta: 65.8 MB). Peak memory consumption was 202.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:39:58,925 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.62 ms. Allocated memory is still 144.7 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.84 ms. Allocated memory is still 144.7 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.00 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 93.6 MB in the beginning and 183.3 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 252.76 ms. Allocated memory is still 204.5 MB. Free memory was 183.3 MB in the beginning and 170.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8648.42 ms. Allocated memory was 204.5 MB in the beginning and 340.8 MB in the end (delta: 136.3 MB). Free memory was 170.1 MB in the beginning and 104.3 MB in the end (delta: 65.8 MB). Peak memory consumption was 202.1 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: (((glob2_pathlim_off <= MAXPATHLEN && ((((((((0 <= glob2_pathlim_off && 1 <= glob2_p_off) && pathbuf_off <= 0) && glob2_p_off < MAXPATHLEN + 2) && 0 <= glob2_pathbuf_off) && 0 <= bound_off) && MAXPATHLEN <= 2147483647) && bound_off <= 2147483647) || ((((bound_off == glob2_pathlim_off && 0 < MAXPATHLEN) && bound_off == pathbuf_off + MAXPATHLEN) && MAXPATHLEN < 2147483647) && glob2_pathbuf_off == glob2_p_off))) && 0 <= glob2_p_off) && 0 <= pathbuf_off) && 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: 8.5s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 52 SDtfs, 53 SDslu, 229 SDs, 0 SdLazy, 235 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 174 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 16 PreInvPairs, 27 NumberOfFragments, 171 HoareAnnotationTreeSize, 16 FomulaSimplifications, 162 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 511 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s 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]: 4134, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 330, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 96, TOOLS_POST_TIME[ms]: 53, TOOLS_POST_CALL_APPLICATIONS: 152, TOOLS_POST_CALL_TIME[ms]: 562, TOOLS_POST_RETURN_APPLICATIONS: 144, TOOLS_POST_RETURN_TIME[ms]: 156, TOOLS_QUANTIFIERELIM_APPLICATIONS: 392, TOOLS_QUANTIFIERELIM_TIME[ms]: 649, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 15, FLUID_QUERY_TIME[ms]: 15, FLUID_QUERIES: 360, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 218, DOMAIN_JOIN_TIME[ms]: 2608, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME[ms]: 374, DOMAIN_ISSUBSETEQ_APPLICATIONS: 30, DOMAIN_ISSUBSETEQ_TIME[ms]: 58, DOMAIN_ISBOTTOM_APPLICATIONS: 80, DOMAIN_ISBOTTOM_TIME[ms]: 151, LOOP_SUMMARIZER_APPLICATIONS: 10, LOOP_SUMMARIZER_CACHE_MISSES: 10, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 3072, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 3070, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 30, CALL_SUMMARIZER_APPLICATIONS: 144, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME[ms]: 22, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 19, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 30, DAG_COMPRESSION_PROCESSED_NODES: 268, DAG_COMPRESSION_RETAINED_NODES: 148, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...