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_struct.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:53:18,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:53:18,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:53:18,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:53:18,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:53:18,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:53:18,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:53:18,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:53:18,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:53:18,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:53:18,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:53:18,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:53:18,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:53:18,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:53:18,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:53:18,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:53:18,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:53:18,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:53:18,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:53:18,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:53:18,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:53:18,884 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:53:18,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:53:18,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:53:18,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 22:53:18,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:53:18,896 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:53:18,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:53:18,897 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 [2019-10-13 22:53:18,915 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:53:18,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:53:18,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:53:18,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:53:18,919 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:53:18,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:53:18,920 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:53:18,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:53:18,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:53:18,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:53:18,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:53:18,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:53:18,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:53:18,921 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:53:18,921 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:53:18,922 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:53:18,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:53:18,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:53:18,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:53:18,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:53:18,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:53:18,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:53:18,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:53:18,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:53:18,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:53:18,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:53:18,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:53:18,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:53:18,925 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 [2019-10-13 22:53:19,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:53:19,215 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:53:19,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:53:19,220 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:53:19,220 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:53:19,221 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2019-10-13 22:53:19,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43edc3de4/d8c8ce5c91e94fd1960f10616496d967/FLAG353f16df3 [2019-10-13 22:53:19,725 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:53:19,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2019-10-13 22:53:19,732 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43edc3de4/d8c8ce5c91e94fd1960f10616496d967/FLAG353f16df3 [2019-10-13 22:53:20,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43edc3de4/d8c8ce5c91e94fd1960f10616496d967 [2019-10-13 22:53:20,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:53:20,122 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:53:20,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:53:20,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:53:20,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:53:20,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c608eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20, skipping insertion in model container [2019-10-13 22:53:20,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,136 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:53:20,149 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:53:20,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:53:20,308 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:53:20,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:53:20,349 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:53:20,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20 WrapperNode [2019-10-13 22:53:20,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:53:20,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:53:20,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:53:20,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:53:20,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (1/1) ... [2019-10-13 22:53:20,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:53:20,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:53:20,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:53:20,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:53:20,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (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 [2019-10-13 22:53:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:53:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:53:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-13 22:53:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 22:53:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 22:53:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:53:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:53:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-13 22:53:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 22:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 22:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:53:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:53:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:53:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:53:20,754 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:53:20,754 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:53:20,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:20 BoogieIcfgContainer [2019-10-13 22:53:20,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:53:20,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:53:20,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:53:20,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:53:20,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:53:20" (1/3) ... [2019-10-13 22:53:20,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2057e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:20, skipping insertion in model container [2019-10-13 22:53:20,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:53:20" (2/3) ... [2019-10-13 22:53:20,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2057e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:53:20, skipping insertion in model container [2019-10-13 22:53:20,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:53:20" (3/3) ... [2019-10-13 22:53:20,764 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2019-10-13 22:53:20,774 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:53:20,782 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:53:20,794 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:53:20,822 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:53:20,825 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:53:20,825 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:53:20,825 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:53:20,826 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:53:20,826 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:53:20,826 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:53:20,826 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:53:20,851 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 22:53:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 22:53:20,864 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:20,865 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:53:20,870 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:20,878 INFO L82 PathProgramCache]: Analyzing trace with hash 878591204, now seen corresponding path program 1 times [2019-10-13 22:53:20,884 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:20,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804719735] [2019-10-13 22:53:20,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:20,885 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:20,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:53:21,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804719735] [2019-10-13 22:53:21,091 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:21,091 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:53:21,091 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320411545] [2019-10-13 22:53:21,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:53:21,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:21,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:53:21,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:53:21,113 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2019-10-13 22:53:21,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:21,195 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-10-13 22:53:21,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:53:21,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-13 22:53:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:21,204 INFO L225 Difference]: With dead ends: 38 [2019-10-13 22:53:21,204 INFO L226 Difference]: Without dead ends: 16 [2019-10-13 22:53:21,207 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 [2019-10-13 22:53:21,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-13 22:53:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-13 22:53:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 22:53:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-10-13 22:53:21,244 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 10 [2019-10-13 22:53:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:21,245 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-10-13 22:53:21,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:53:21,245 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-10-13 22:53:21,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 22:53:21,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:53:21,246 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:53:21,247 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:53:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:53:21,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1506417696, now seen corresponding path program 1 times [2019-10-13 22:53:21,248 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:53:21,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604348804] [2019-10-13 22:53:21,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:21,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:53:21,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:53:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:53:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:53:21,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604348804] [2019-10-13 22:53:21,349 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:53:21,349 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 22:53:21,349 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376016736] [2019-10-13 22:53:21,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 22:53:21,352 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:53:21,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 22:53:21,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 22:53:21,353 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 7 states. [2019-10-13 22:53:21,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:53:21,443 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-10-13 22:53:21,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:53:21,444 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-10-13 22:53:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:53:21,445 INFO L225 Difference]: With dead ends: 16 [2019-10-13 22:53:21,445 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 22:53:21,446 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:53:21,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 22:53:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 22:53:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 22:53:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 22:53:21,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-13 22:53:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:53:21,450 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 22:53:21,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 22:53:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 22:53:21,451 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 22:53:21,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 22:53:21,526 INFO L439 ceAbstractionStarter]: At program point mutex_unlockENTRY(lines 25 29) 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)) [2019-10-13 22:53:21,527 INFO L443 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-10-13 22:53:21,527 INFO L443 ceAbstractionStarter]: For program point mutex_unlockEXIT(lines 25 29) no Hoare annotation was computed. [2019-10-13 22:53:21,527 INFO L439 ceAbstractionStarter]: At program point L27-1(line 27) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_unlock_#in~b.base|) |mutex_unlock_#in~b.offset|) 1)) [2019-10-13 22:53:21,527 INFO L443 ceAbstractionStarter]: For program point L27-3(line 27) no Hoare annotation was computed. [2019-10-13 22:53:21,527 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:53:21,528 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:53:21,528 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-10-13 22:53:21,528 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 12 13) no Hoare annotation was computed. [2019-10-13 22:53:21,528 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 12 13) the Hoare annotation is: true [2019-10-13 22:53:21,529 INFO L439 ceAbstractionStarter]: At program point mutex_lockENTRY(lines 19 23) 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)) [2019-10-13 22:53:21,529 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-13 22:53:21,529 INFO L443 ceAbstractionStarter]: For program point mutex_lockEXIT(lines 19 23) no Hoare annotation was computed. [2019-10-13 22:53:21,530 INFO L439 ceAbstractionStarter]: At program point L21-1(line 21) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |mutex_lock_#in~a.base|) |mutex_lock_#in~a.offset|) 0)) [2019-10-13 22:53:21,531 INFO L443 ceAbstractionStarter]: For program point L21-3(line 21) no Hoare annotation was computed. [2019-10-13 22:53:21,531 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:53:21,532 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 22:53:21,533 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:53:21,533 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 22:53:21,533 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 31 43) the Hoare annotation is: true [2019-10-13 22:53:21,534 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 31 43) no Hoare annotation was computed. [2019-10-13 22:53:21,534 INFO L443 ceAbstractionStarter]: For program point L38(line 38) no Hoare annotation was computed. [2019-10-13 22:53:21,540 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (= 0 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|)) [2019-10-13 22:53:21,541 INFO L439 ceAbstractionStarter]: At program point L36-1(line 36) the Hoare annotation is: (= 1 (select (select |#memory_int| |main_~#m~0.base|) |main_~#m~0.offset|)) [2019-10-13 22:53:21,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:53:21 BoogieIcfgContainer [2019-10-13 22:53:21,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 22:53:21,550 INFO L168 Benchmark]: Toolchain (without parser) took 1427.53 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.5 MB in the beginning and 117.3 MB in the end (delta: -16.8 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2019-10-13 22:53:21,550 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 118.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 22:53:21,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.65 ms. Allocated memory is still 136.8 MB. Free memory was 100.1 MB in the beginning and 90.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-13 22:53:21,553 INFO L168 Benchmark]: Boogie Preprocessor took 115.37 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 179.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-10-13 22:53:21,553 INFO L168 Benchmark]: RCFGBuilder took 289.67 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 165.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-13 22:53:21,554 INFO L168 Benchmark]: TraceAbstraction took 790.46 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 117.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2019-10-13 22:53:21,558 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory is still 118.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.65 ms. Allocated memory is still 136.8 MB. Free memory was 100.1 MB in the beginning and 90.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.37 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 179.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.67 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 165.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 790.46 ms. Allocated memory is still 200.8 MB. Free memory was 164.4 MB in the beginning and 117.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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: 0.7s, 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, 0.1s 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...