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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:01:20,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:01:20,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:01:20,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 01:01:20,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:01:20,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:01:20,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:01:20,881 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 01:01:20,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:01:20,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:01:20,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:01:20,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:01:20,898 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:01:20,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:01:20,898 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:01:20,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:01:20,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:01:20,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:01:20,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:01:20,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:01:20,900 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:01:20,900 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:01:20,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:01:20,900 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:01:20,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:01:20,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:01:20,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:01:20,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:01:20,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:01:20,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:01:20,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:01:20,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:01:20,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:01:20,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:01:20,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:01:20,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:01:20,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:01:21,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:01:21,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:01:21,231 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:01:21,232 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:01:21,233 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:01:21,234 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2019-10-15 01:01:21,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8204f4c/b1f843c4940c4184881a180178fd6dca/FLAG7df6f3dc4 [2019-10-15 01:01:21,730 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:01:21,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_struct.c_1.i [2019-10-15 01:01:21,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8204f4c/b1f843c4940c4184881a180178fd6dca/FLAG7df6f3dc4 [2019-10-15 01:01:22,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d8204f4c/b1f843c4940c4184881a180178fd6dca [2019-10-15 01:01:22,107 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:01:22,108 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:01:22,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:22,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:01:22,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:01:22,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b57d1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22, skipping insertion in model container [2019-10-15 01:01:22,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,125 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:01:22,143 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:01:22,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:22,415 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:01:22,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:01:22,454 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:01:22,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22 WrapperNode [2019-10-15 01:01:22,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:01:22,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:01:22,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:01:22,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:01:22,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (1/1) ... [2019-10-15 01:01:22,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:01:22,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:01:22,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:01:22,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:01:22,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (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 01:01:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:01:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:01:22,660 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-15 01:01:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-15 01:01:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-15 01:01:22,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:01:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:01:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-15 01:01:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-15 01:01:22,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:01:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:01:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-15 01:01:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:01:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:01:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:01:22,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:01:22,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:01:22,889 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:01:22,889 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:01:22,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:22 BoogieIcfgContainer [2019-10-15 01:01:22,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:01:22,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:01:22,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:01:22,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:01:22,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:01:22" (1/3) ... [2019-10-15 01:01:22,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d19b1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:22, skipping insertion in model container [2019-10-15 01:01:22,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:01:22" (2/3) ... [2019-10-15 01:01:22,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d19b1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:01:22, skipping insertion in model container [2019-10-15 01:01:22,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:01:22" (3/3) ... [2019-10-15 01:01:22,917 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_struct.c_1.i [2019-10-15 01:01:22,933 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:01:22,941 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:01:22,952 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:01:22,979 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:01:22,979 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:01:22,979 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:01:22,979 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:01:22,979 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:01:22,980 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:01:22,980 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:01:22,980 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:01:23,003 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-15 01:01:23,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:01:23,015 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:23,020 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:23,022 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:23,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:23,032 INFO L82 PathProgramCache]: Analyzing trace with hash 589228543, now seen corresponding path program 1 times [2019-10-15 01:01:23,041 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:23,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952210076] [2019-10-15 01:01:23,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:23,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:23,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:23,242 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 01:01:23,242 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952210076] [2019-10-15 01:01:23,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:23,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:01:23,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698057121] [2019-10-15 01:01:23,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:01:23,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:23,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:01:23,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:01:23,267 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2019-10-15 01:01:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:23,356 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-10-15 01:01:23,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:01:23,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-15 01:01:23,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:23,366 INFO L225 Difference]: With dead ends: 46 [2019-10-15 01:01:23,366 INFO L226 Difference]: Without dead ends: 18 [2019-10-15 01:01:23,370 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 01:01:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-15 01:01:23,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-15 01:01:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-15 01:01:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-10-15 01:01:23,408 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 11 [2019-10-15 01:01:23,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:23,408 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-10-15 01:01:23,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:01:23,409 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-10-15 01:01:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-15 01:01:23,410 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:01:23,410 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:01:23,410 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:01:23,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:01:23,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1259031447, now seen corresponding path program 1 times [2019-10-15 01:01:23,411 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:01:23,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133289070] [2019-10-15 01:01:23,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:23,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:01:23,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:01:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:01:23,544 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 01:01:23,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133289070] [2019-10-15 01:01:23,545 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:01:23,545 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:01:23,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519440988] [2019-10-15 01:01:23,547 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:01:23,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:01:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:01:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:01:23,549 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 7 states. [2019-10-15 01:01:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:01:23,624 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-10-15 01:01:23,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:01:23,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-15 01:01:23,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:01:23,625 INFO L225 Difference]: With dead ends: 18 [2019-10-15 01:01:23,626 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:01:23,627 INFO L600 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 [2019-10-15 01:01:23,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:01:23,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:01:23,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:01:23,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:01:23,628 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-15 01:01:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:01:23,629 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:01:23,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:01:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:01:23,629 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:01:23,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:01:23,695 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)) [2019-10-15 01:01:23,695 INFO L443 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-10-15 01:01:23,696 INFO L443 ceAbstractionStarter]: For program point mutex_unlockEXIT(lines 25 29) no Hoare annotation was computed. [2019-10-15 01:01:23,696 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)) [2019-10-15 01:01:23,696 INFO L443 ceAbstractionStarter]: For program point L27-3(line 27) no Hoare annotation was computed. [2019-10-15 01:01:23,696 INFO L443 ceAbstractionStarter]: For program point mutex_unlockFINAL(lines 25 29) no Hoare annotation was computed. [2019-10-15 01:01:23,697 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:23,697 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:23,697 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:23,697 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-10-15 01:01:23,697 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 12 13) no Hoare annotation was computed. [2019-10-15 01:01:23,698 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 12 13) the Hoare annotation is: true [2019-10-15 01:01:23,698 INFO L443 ceAbstractionStarter]: For program point errFINAL(lines 12 13) no Hoare annotation was computed. [2019-10-15 01:01:23,698 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)) [2019-10-15 01:01:23,698 INFO L443 ceAbstractionStarter]: For program point mutex_lockFINAL(lines 19 23) no Hoare annotation was computed. [2019-10-15 01:01:23,699 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-15 01:01:23,699 INFO L443 ceAbstractionStarter]: For program point mutex_lockEXIT(lines 19 23) no Hoare annotation was computed. [2019-10-15 01:01:23,699 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)) [2019-10-15 01:01:23,699 INFO L443 ceAbstractionStarter]: For program point L21-3(line 21) no Hoare annotation was computed. [2019-10-15 01:01:23,699 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:01:23,700 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:01:23,700 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:01:23,700 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:01:23,700 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 31 43) the Hoare annotation is: true [2019-10-15 01:01:23,700 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 31 43) no Hoare annotation was computed. [2019-10-15 01:01:23,701 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 31 43) no Hoare annotation was computed. [2019-10-15 01:01:23,701 INFO L443 ceAbstractionStarter]: For program point L38(line 38) no Hoare annotation was computed. [2019-10-15 01:01:23,701 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|)) [2019-10-15 01:01:23,701 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|)) [2019-10-15 01:01:23,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:01:23 BoogieIcfgContainer [2019-10-15 01:01:23,705 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:01:23,708 INFO L168 Benchmark]: Toolchain (without parser) took 1598.89 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 103.3 MB in the beginning and 118.2 MB in the end (delta: -14.9 MB). Peak memory consumption was 40.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:23,709 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:01:23,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.86 ms. Allocated memory is still 145.2 MB. Free memory was 103.1 MB in the beginning and 93.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:23,711 INFO L168 Benchmark]: Boogie Preprocessor took 145.52 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 93.3 MB in the beginning and 179.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:23,712 INFO L168 Benchmark]: RCFGBuilder took 289.82 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 165.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:23,713 INFO L168 Benchmark]: TraceAbstraction took 806.24 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 118.2 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:01:23,717 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 345.86 ms. Allocated memory is still 145.2 MB. Free memory was 103.1 MB in the beginning and 93.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.52 ms. Allocated memory was 145.2 MB in the beginning and 200.8 MB in the end (delta: 55.6 MB). Free memory was 93.3 MB in the beginning and 179.3 MB in the end (delta: -86.0 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 289.82 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 165.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 806.24 ms. Allocated memory is still 200.8 MB. Free memory was 164.9 MB in the beginning and 118.2 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.8 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, 29 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 4 SDslu, 96 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=29occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1104 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...