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/ldv-regression/mutex_lock_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 12:47:13,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 12:47:13,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 12:47:13,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-07 12:47:13,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 12:47:13,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 12:47:13,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 12:47:13,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 12:47:13,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 12:47:13,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 12:47:13,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 12:47:13,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 12:47:13,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 12:47:13,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 12:47:14,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 12:47:14,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 12:47:14,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 12:47:14,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 12:47:14,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 12:47:14,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 12:47:14,019 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 12:47:14,036 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 12:47:14,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 12:47:14,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 12:47:14,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 12:47:14,038 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 12:47:14,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 12:47:14,039 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 12:47:14,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 12:47:14,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 12:47:14,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 12:47:14,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 12:47:14,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 12:47:14,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 12:47:14,040 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 12:47:14,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 12:47:14,041 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 12:47:14,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 12:47:14,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 12:47:14,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 12:47:14,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 12:47:14,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 12:47:14,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 12:47:14,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 12:47:14,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 12:47:14,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 12:47:14,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 12:47:14,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 12:47:14,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 12:47:14,043 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 12:47:14,367 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 12:47:14,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 12:47:14,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 12:47:14,399 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 12:47:14,399 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 12:47:14,400 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-10-07 12:47:14,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe3dbd9a/9c962aaa244a497097c734f00f3ea79c/FLAGf0c744291 [2019-10-07 12:47:14,996 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 12:47:15,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-10-07 12:47:15,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe3dbd9a/9c962aaa244a497097c734f00f3ea79c/FLAGf0c744291 [2019-10-07 12:47:15,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe3dbd9a/9c962aaa244a497097c734f00f3ea79c [2019-10-07 12:47:15,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 12:47:15,321 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 12:47:15,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 12:47:15,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 12:47:15,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 12:47:15,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5ad1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15, skipping insertion in model container [2019-10-07 12:47:15,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,342 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 12:47:15,364 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 12:47:15,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:47:15,571 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 12:47:15,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:47:15,603 INFO L192 MainTranslator]: Completed translation [2019-10-07 12:47:15,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15 WrapperNode [2019-10-07 12:47:15,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 12:47:15,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 12:47:15,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 12:47:15,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 12:47:15,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (1/1) ... [2019-10-07 12:47:15,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 12:47:15,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 12:47:15,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 12:47:15,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 12:47:15,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (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 12:47:15,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 12:47:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 12:47:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-07 12:47:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-07 12:47:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-07 12:47:15,791 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 12:47:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 12:47:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-07 12:47:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-07 12:47:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 12:47:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 12:47:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-07 12:47:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 12:47:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 12:47:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 12:47:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 12:47:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 12:47:16,104 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 12:47:16,105 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 12:47:16,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:47:16 BoogieIcfgContainer [2019-10-07 12:47:16,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 12:47:16,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 12:47:16,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 12:47:16,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 12:47:16,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:47:15" (1/3) ... [2019-10-07 12:47:16,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d940b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:47:16, skipping insertion in model container [2019-10-07 12:47:16,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:15" (2/3) ... [2019-10-07 12:47:16,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d940b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:47:16, skipping insertion in model container [2019-10-07 12:47:16,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:47:16" (3/3) ... [2019-10-07 12:47:16,131 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2019-10-07 12:47:16,144 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 12:47:16,151 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 12:47:16,161 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 12:47:16,190 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 12:47:16,190 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 12:47:16,191 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 12:47:16,191 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 12:47:16,191 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 12:47:16,191 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 12:47:16,192 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 12:47:16,192 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 12:47:16,214 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-07 12:47:16,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 12:47:16,221 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:16,222 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:16,225 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:16,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:16,231 INFO L82 PathProgramCache]: Analyzing trace with hash 878591204, now seen corresponding path program 1 times [2019-10-07 12:47:16,240 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:16,241 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:16,241 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:16,242 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:16,468 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 12:47:16,469 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:16,470 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:47:16,471 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 12:47:16,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 12:47:16,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 12:47:16,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 12:47:16,495 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-10-07 12:47:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:47:16,610 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-10-07 12:47:16,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 12:47:16,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-07 12:47:16,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:47:16,623 INFO L225 Difference]: With dead ends: 38 [2019-10-07 12:47:16,623 INFO L226 Difference]: Without dead ends: 16 [2019-10-07 12:47:16,628 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 12:47:16,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-07 12:47:16,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-07 12:47:16,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-07 12:47:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-10-07 12:47:16,678 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 10 [2019-10-07 12:47:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:47:16,679 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-10-07 12:47:16,679 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 12:47:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-10-07 12:47:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 12:47:16,680 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:16,680 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:16,681 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:16,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1506417696, now seen corresponding path program 1 times [2019-10-07 12:47:16,682 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:16,682 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:16,683 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:16,683 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:16,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:16,809 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 12:47:16,810 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:16,810 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:47:16,810 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 12:47:16,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 12:47:16,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 12:47:16,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 12:47:16,814 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 7 states. [2019-10-07 12:47:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:47:16,925 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-10-07 12:47:16,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 12:47:16,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-07 12:47:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:47:16,927 INFO L225 Difference]: With dead ends: 16 [2019-10-07 12:47:16,928 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 12:47:16,930 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 12:47:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 12:47:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 12:47:16,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 12:47:16,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 12:47:16,932 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-07 12:47:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:47:16,933 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 12:47:16,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 12:47:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 12:47:16,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 12:47:16,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 12:47:17,030 INFO L439 ceAbstractionStarter]: At program point mutex_unlockENTRY(lines 22 26) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) (= (select (select |#memory_int| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2019-10-07 12:47:17,030 INFO L443 ceAbstractionStarter]: For program point mutex_unlockEXIT(lines 22 26) no Hoare annotation was computed. [2019-10-07 12:47:17,030 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-10-07 12:47:17,030 INFO L439 ceAbstractionStarter]: At program point L24-1(line 24) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2019-10-07 12:47:17,031 INFO L443 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2019-10-07 12:47:17,031 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-07 12:47:17,032 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 12:47:17,032 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-10-07 12:47:17,033 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 13 14) no Hoare annotation was computed. [2019-10-07 12:47:17,033 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 13 14) the Hoare annotation is: true [2019-10-07 12:47:17,034 INFO L439 ceAbstractionStarter]: At program point mutex_lockENTRY(lines 16 20) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) (= (select (select |#memory_int| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2019-10-07 12:47:17,034 INFO L439 ceAbstractionStarter]: At program point L18-1(line 18) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2019-10-07 12:47:17,034 INFO L443 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2019-10-07 12:47:17,034 INFO L443 ceAbstractionStarter]: For program point mutex_lockEXIT(lines 16 20) no Hoare annotation was computed. [2019-10-07 12:47:17,035 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-07 12:47:17,036 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 12:47:17,039 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-07 12:47:17,039 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 12:47:17,039 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 12:47:17,040 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|)) [2019-10-07 12:47:17,040 INFO L439 ceAbstractionStarter]: At program point L33-1(line 33) the Hoare annotation is: (= 1 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|)) [2019-10-07 12:47:17,042 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 28 40) the Hoare annotation is: true [2019-10-07 12:47:17,042 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 28 40) no Hoare annotation was computed. [2019-10-07 12:47:17,042 INFO L443 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2019-10-07 12:47:17,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 12:47:17 BoogieIcfgContainer [2019-10-07 12:47:17,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 12:47:17,053 INFO L168 Benchmark]: Toolchain (without parser) took 1731.45 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 101.8 MB in the beginning and 121.7 MB in the end (delta: -20.0 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:17,055 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-07 12:47:17,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.53 ms. Allocated memory is still 137.9 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:17,057 INFO L168 Benchmark]: Boogie Preprocessor took 33.40 ms. Allocated memory is still 137.9 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:17,058 INFO L168 Benchmark]: RCFGBuilder took 474.85 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 90.3 MB in the beginning and 168.0 MB in the end (delta: -77.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:17,059 INFO L168 Benchmark]: TraceAbstraction took 935.96 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 121.7 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:17,065 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.53 ms. Allocated memory is still 137.9 MB. Free memory was 101.5 MB in the beginning and 91.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.40 ms. Allocated memory is still 137.9 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.85 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 90.3 MB in the beginning and 168.0 MB in the end (delta: -77.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 935.96 ms. Allocated memory is still 203.4 MB. Free memory was 168.0 MB in the beginning and 121.7 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 3 SDslu, 76 SDs, 0 SdLazy, 40 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 16 NumberOfFragments, 67 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 851 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...