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 0.1.24-13a467a-m [2019-10-15 03:02:09,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:02:09,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:02:09,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:02:09,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:02:09,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:02:09,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:02:09,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:02:09,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:02:09,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:02:09,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:02:09,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:02:09,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:02:09,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:02:09,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:02:09,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:02:09,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:02:09,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:02:09,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:02:09,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:02:09,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:02:09,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:02:09,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:02:09,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:02:09,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:02:09,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:02:09,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:02:09,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:02:09,212 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 [2019-10-15 03:02:09,227 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:02:09,227 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:02:09,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:02:09,229 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:02:09,229 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:02:09,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:02:09,229 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:02:09,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:02:09,230 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:02:09,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:02:09,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:02:09,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:02:09,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:02:09,231 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:02:09,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:02:09,231 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:02:09,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:02:09,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:02:09,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:02:09,232 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:02:09,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:02:09,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:09,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:02:09,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:02:09,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:02:09,233 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:02:09,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:02:09,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:02:09,234 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 [2019-10-15 03:02:09,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:02:09,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:02:09,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:02:09,526 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:02:09,527 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:02:09,528 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-10-15 03:02:09,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5816e6f/ff18ed2ee8d840229567bb1233de0a79/FLAG6fab91a58 [2019-10-15 03:02:09,954 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:02:09,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2019-10-15 03:02:09,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5816e6f/ff18ed2ee8d840229567bb1233de0a79/FLAG6fab91a58 [2019-10-15 03:02:10,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca5816e6f/ff18ed2ee8d840229567bb1233de0a79 [2019-10-15 03:02:10,353 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:02:10,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:02:10,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:10,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:02:10,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:02:10,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@439f08e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10, skipping insertion in model container [2019-10-15 03:02:10,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,370 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:02:10,391 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:02:10,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:10,618 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:02:10,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:10,644 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:02:10,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10 WrapperNode [2019-10-15 03:02:10,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:10,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:02:10,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:02:10,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:02:10,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,673 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (1/1) ... [2019-10-15 03:02:10,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:02:10,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:02:10,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:02:10,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:02:10,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (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 [2019-10-15 03:02:10,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:02:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:02:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:02:10,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:02:10,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:02:10,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:02:10,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:02:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:02:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:02:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:02:10,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:02:11,128 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:02:11,129 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:02:11,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:11 BoogieIcfgContainer [2019-10-15 03:02:11,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:02:11,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:02:11,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:02:11,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:02:11,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:10" (1/3) ... [2019-10-15 03:02:11,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167d1f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:11, skipping insertion in model container [2019-10-15 03:02:11,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:10" (2/3) ... [2019-10-15 03:02:11,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@167d1f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:11, skipping insertion in model container [2019-10-15 03:02:11,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:11" (3/3) ... [2019-10-15 03:02:11,139 INFO L109 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2019-10-15 03:02:11,151 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:02:11,157 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:02:11,168 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:02:11,192 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:02:11,192 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:02:11,192 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:02:11,192 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:02:11,193 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:02:11,193 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:02:11,193 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:02:11,193 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:02:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-15 03:02:11,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 03:02:11,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:11,217 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:11,218 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:11,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:11,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1006006752, now seen corresponding path program 1 times [2019-10-15 03:02:11,232 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:11,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760261497] [2019-10-15 03:02:11,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:11,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:11,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:11,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:11,414 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760261497] [2019-10-15 03:02:11,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:11,415 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:02:11,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435519649] [2019-10-15 03:02:11,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:02:11,420 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:02:11,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:02:11,443 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-10-15 03:02:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:11,535 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-10-15 03:02:11,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:02:11,536 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-15 03:02:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:11,543 INFO L225 Difference]: With dead ends: 40 [2019-10-15 03:02:11,543 INFO L226 Difference]: Without dead ends: 20 [2019-10-15 03:02:11,546 INFO L600 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 [2019-10-15 03:02:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-15 03:02:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-15 03:02:11,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-15 03:02:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-10-15 03:02:11,582 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2019-10-15 03:02:11,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:11,582 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-10-15 03:02:11,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:02:11,583 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-10-15 03:02:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:02:11,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:11,584 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:11,584 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:11,585 INFO L82 PathProgramCache]: Analyzing trace with hash 859609374, now seen corresponding path program 1 times [2019-10-15 03:02:11,586 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:11,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082675264] [2019-10-15 03:02:11,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:11,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:11,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:11,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:11,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082675264] [2019-10-15 03:02:11,663 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:11,663 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:02:11,664 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519549643] [2019-10-15 03:02:11,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:02:11,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:11,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:02:11,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:02:11,666 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-10-15 03:02:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:11,722 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-10-15 03:02:11,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:02:11,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-15 03:02:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:11,725 INFO L225 Difference]: With dead ends: 30 [2019-10-15 03:02:11,726 INFO L226 Difference]: Without dead ends: 28 [2019-10-15 03:02:11,726 INFO L600 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 [2019-10-15 03:02:11,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-15 03:02:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-15 03:02:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-15 03:02:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-10-15 03:02:11,739 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-10-15 03:02:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:11,740 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-10-15 03:02:11,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:02:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-10-15 03:02:11,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-15 03:02:11,742 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:11,742 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:11,743 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:11,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:11,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1549601922, now seen corresponding path program 1 times [2019-10-15 03:02:11,744 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:11,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600417898] [2019-10-15 03:02:11,744 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:11,744 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:11,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:02:11,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600417898] [2019-10-15 03:02:11,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322688028] [2019-10-15 03:02:11,828 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 [2019-10-15 03:02:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:11,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-15 03:02:11,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:02:12,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:02:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:02:12,047 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:02:12,105 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:02:12,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:02:12,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:02:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:02:12,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936814167] [2019-10-15 03:02:12,253 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-15 03:02:12,253 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:02:12,260 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:02:12,268 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:02:12,269 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:02:12,336 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:02:14,854 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:02:14,879 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:02:14,881 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:02:15,378 WARN L191 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2019-10-15 03:02:15,529 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 22 [2019-10-15 03:02:15,787 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:02:15,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8, 10] total 23 [2019-10-15 03:02:15,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966701038] [2019-10-15 03:02:15,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-15 03:02:15,790 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:15,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-15 03:02:15,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:02:15,792 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 23 states. [2019-10-15 03:02:15,923 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2019-10-15 03:02:16,450 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2019-10-15 03:02:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:16,698 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2019-10-15 03:02:16,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:02:16,700 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2019-10-15 03:02:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:16,702 INFO L225 Difference]: With dead ends: 37 [2019-10-15 03:02:16,702 INFO L226 Difference]: Without dead ends: 35 [2019-10-15 03:02:16,704 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2019-10-15 03:02:16,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-15 03:02:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-10-15 03:02:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-15 03:02:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2019-10-15 03:02:16,718 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2019-10-15 03:02:16,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:16,718 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2019-10-15 03:02:16,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-15 03:02:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2019-10-15 03:02:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-15 03:02:16,722 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:16,722 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:16,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:02:16,935 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:16,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:16,935 INFO L82 PathProgramCache]: Analyzing trace with hash 745848286, now seen corresponding path program 2 times [2019-10-15 03:02:16,936 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:16,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584686892] [2019-10-15 03:02:16,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:16,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:16,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:02:17,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584686892] [2019-10-15 03:02:17,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465523769] [2019-10-15 03:02:17,015 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 [2019-10-15 03:02:17,081 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 03:02:17,081 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 03:02:17,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:02:17,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:02:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:02:17,137 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:02:17,277 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:02:17,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1241293312] [2019-10-15 03:02:17,279 INFO L162 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-10-15 03:02:17,279 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:02:17,280 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:02:17,280 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:02:17,280 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:02:17,297 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:02:18,810 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:02:18,829 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:02:18,830 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:02:19,012 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 34 [2019-10-15 03:02:19,494 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:02:19,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8, 10] total 22 [2019-10-15 03:02:19,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779809405] [2019-10-15 03:02:19,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-15 03:02:19,496 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:19,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-15 03:02:19,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:02:19,500 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 22 states. [2019-10-15 03:02:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:19,781 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-15 03:02:19,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:02:19,781 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2019-10-15 03:02:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:19,782 INFO L225 Difference]: With dead ends: 33 [2019-10-15 03:02:19,782 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:02:19,783 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2019-10-15 03:02:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:02:19,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:02:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:02:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:02:19,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2019-10-15 03:02:19,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:19,785 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:02:19,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-15 03:02:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:02:19,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:02:19,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:02:19,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:02:20,184 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2019-10-15 03:02:20,431 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2019-10-15 03:02:20,626 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2019-10-15 03:02:20,629 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 03:02:20,629 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:02:20,629 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:02:20,629 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 03:02:20,629 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:02:20,629 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:02:20,630 INFO L446 ceAbstractionStarter]: At program point L30(lines 11 31) the Hoare annotation is: true [2019-10-15 03:02:20,630 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 31) the Hoare annotation is: true [2019-10-15 03:02:20,630 INFO L443 ceAbstractionStarter]: For program point L28(lines 24 29) no Hoare annotation was computed. [2019-10-15 03:02:20,631 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)) [2019-10-15 03:02:20,631 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)) [2019-10-15 03:02:20,631 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 31) no Hoare annotation was computed. [2019-10-15 03:02:20,632 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)) [2019-10-15 03:02:20,632 INFO L443 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2019-10-15 03:02:20,632 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 03:02:20,632 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 03:02:20,632 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 03:02:20,633 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 03:02:20,633 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 03:02:20,633 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 03:02:20,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:02:20 BoogieIcfgContainer [2019-10-15 03:02:20,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:02:20,654 INFO L168 Benchmark]: Toolchain (without parser) took 10299.78 ms. Allocated memory was 137.4 MB in the beginning and 352.8 MB in the end (delta: 215.5 MB). Free memory was 102.5 MB in the beginning and 149.8 MB in the end (delta: -47.3 MB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:20,655 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 03:02:20,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.84 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:20,658 INFO L168 Benchmark]: Boogie Preprocessor took 108.76 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:20,659 INFO L168 Benchmark]: RCFGBuilder took 375.66 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 166.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:20,660 INFO L168 Benchmark]: TraceAbstraction took 9521.42 ms. Allocated memory was 200.8 MB in the beginning and 352.8 MB in the end (delta: 152.0 MB). Free memory was 166.6 MB in the beginning and 149.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 168.8 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:20,665 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.84 ms. Allocated memory is still 137.4 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.76 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.6 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 375.66 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 166.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9521.42 ms. Allocated memory was 200.8 MB in the beginning and 352.8 MB in the end (delta: 152.0 MB). Free memory was 166.6 MB in the beginning and 149.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 168.8 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: 9.4s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 52 SDtfs, 53 SDslu, 229 SDs, 0 SdLazy, 235 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 232 GetRequests, 174 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 2.7s 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, 0.6s 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]: 4181, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 330, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 96, TOOLS_POST_TIME[ms]: 47, TOOLS_POST_CALL_APPLICATIONS: 152, TOOLS_POST_CALL_TIME[ms]: 590, TOOLS_POST_RETURN_APPLICATIONS: 144, TOOLS_POST_RETURN_TIME[ms]: 159, TOOLS_QUANTIFIERELIM_APPLICATIONS: 392, TOOLS_QUANTIFIERELIM_TIME[ms]: 673, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 18, FLUID_QUERY_TIME[ms]: 17, FLUID_QUERIES: 360, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 218, DOMAIN_JOIN_TIME[ms]: 2654, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME[ms]: 372, DOMAIN_ISSUBSETEQ_APPLICATIONS: 30, DOMAIN_ISSUBSETEQ_TIME[ms]: 60, DOMAIN_ISBOTTOM_APPLICATIONS: 80, DOMAIN_ISBOTTOM_TIME[ms]: 146, LOOP_SUMMARIZER_APPLICATIONS: 10, LOOP_SUMMARIZER_CACHE_MISSES: 10, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 3151, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 3150, 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]: 20, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 28, DAG_COMPRESSION_PROCESSED_NODES: 268, DAG_COMPRESSION_RETAINED_NODES: 152, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...