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_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:02:18,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:02:18,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:02:18,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:02:18,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:02:18,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:02:18,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:02:18,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:02:18,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:02:18,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:02:18,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:02:18,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:02:18,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:02:18,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:02:18,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:02:18,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:02:18,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:02:18,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:02:18,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:02:18,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:02:18,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:02:18,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:02:18,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:02:18,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:02:18,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:02:18,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:02:18,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:02:18,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:02:18,903 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 21:02:18,937 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:02:18,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:02:18,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:02:18,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:02:18,941 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:02:18,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:02:18,941 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:02:18,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:02:18,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:02:18,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:02:18,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:02:18,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:02:18,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:02:18,943 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:02:18,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:02:18,943 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:02:18,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:02:18,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:02:18,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:02:18,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:02:18,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:02:18,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:02:18,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:02:18,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:02:18,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:02:18,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:02:18,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:02:18,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:02:18,947 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 [2019-10-13 21:02:19,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:02:19,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:02:19,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:02:19,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:02:19,316 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:02:19,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-10-13 21:02:19,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c8e9898/ba4ebeda4e5f4ec19cec4172e1b28c7f/FLAG96e3013cd [2019-10-13 21:02:19,877 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:02:19,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/mutex_lock_int.c_1.i [2019-10-13 21:02:19,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c8e9898/ba4ebeda4e5f4ec19cec4172e1b28c7f/FLAG96e3013cd [2019-10-13 21:02:20,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c8e9898/ba4ebeda4e5f4ec19cec4172e1b28c7f [2019-10-13 21:02:20,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:02:20,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:02:20,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:20,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:02:20,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:02:20,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ae7ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20, skipping insertion in model container [2019-10-13 21:02:20,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,313 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:02:20,330 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:02:20,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:20,560 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:02:20,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:20,599 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:02:20,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20 WrapperNode [2019-10-13 21:02:20,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:20,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:02:20,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:02:20,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:02:20,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (1/1) ... [2019-10-13 21:02:20,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:02:20,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:02:20,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:02:20,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:02:20,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (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 21:02:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:02:20,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:02:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2019-10-13 21:02:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 21:02:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 21:02:20,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:02:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:02:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure err [2019-10-13 21:02:20,809 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 21:02:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:02:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:02:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 21:02:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:02:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:02:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:02:20,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:02:20,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:02:20,989 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:02:20,990 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:02:20,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:20 BoogieIcfgContainer [2019-10-13 21:02:20,991 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:02:20,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:02:20,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:02:20,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:02:20,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:20" (1/3) ... [2019-10-13 21:02:20,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff88c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:20, skipping insertion in model container [2019-10-13 21:02:20,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:20" (2/3) ... [2019-10-13 21:02:20,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff88c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:20, skipping insertion in model container [2019-10-13 21:02:20,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:20" (3/3) ... [2019-10-13 21:02:21,000 INFO L109 eAbstractionObserver]: Analyzing ICFG mutex_lock_int.c_1.i [2019-10-13 21:02:21,017 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:02:21,033 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:02:21,067 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:02:21,111 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:02:21,111 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:02:21,111 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:02:21,112 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:02:21,112 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:02:21,112 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:02:21,112 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:02:21,112 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:02:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-10-13 21:02:21,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 21:02:21,139 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:21,140 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:21,142 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:21,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash 589228543, now seen corresponding path program 1 times [2019-10-13 21:02:21,156 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:21,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175150059] [2019-10-13 21:02:21,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:21,157 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:21,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:21,348 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 21:02:21,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175150059] [2019-10-13 21:02:21,350 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:21,350 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:02:21,350 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850608546] [2019-10-13 21:02:21,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:02:21,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:21,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:02:21,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:02:21,378 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2019-10-13 21:02:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:21,500 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2019-10-13 21:02:21,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:02:21,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-13 21:02:21,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:21,514 INFO L225 Difference]: With dead ends: 46 [2019-10-13 21:02:21,515 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 21:02:21,521 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 21:02:21,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 21:02:21,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-13 21:02:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 21:02:21,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2019-10-13 21:02:21,591 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 11 [2019-10-13 21:02:21,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:21,593 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2019-10-13 21:02:21,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:02:21,594 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2019-10-13 21:02:21,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-13 21:02:21,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:21,597 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:21,597 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:21,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:21,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1259031447, now seen corresponding path program 1 times [2019-10-13 21:02:21,599 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:21,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833373421] [2019-10-13 21:02:21,600 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:21,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:21,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:21,786 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 21:02:21,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833373421] [2019-10-13 21:02:21,787 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:21,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:02:21,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769160302] [2019-10-13 21:02:21,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:02:21,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:21,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:02:21,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:02:21,794 INFO L87 Difference]: Start difference. First operand 18 states and 17 transitions. Second operand 7 states. [2019-10-13 21:02:21,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:21,880 INFO L93 Difference]: Finished difference Result 18 states and 17 transitions. [2019-10-13 21:02:21,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:02:21,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-10-13 21:02:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:21,882 INFO L225 Difference]: With dead ends: 18 [2019-10-13 21:02:21,882 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:02:21,884 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 21:02:21,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:02:21,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:02:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:02:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:02:21,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-10-13 21:02:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:21,885 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:02:21,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:02:21,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:02:21,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:02:21,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:02:21,965 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)) [2019-10-13 21:02:21,965 INFO L443 ceAbstractionStarter]: For program point mutex_unlockEXIT(lines 22 26) no Hoare annotation was computed. [2019-10-13 21:02:21,965 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-10-13 21:02:21,966 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)) [2019-10-13 21:02:21,966 INFO L443 ceAbstractionStarter]: For program point mutex_unlockFINAL(lines 22 26) no Hoare annotation was computed. [2019-10-13 21:02:21,966 INFO L443 ceAbstractionStarter]: For program point L24-3(line 24) no Hoare annotation was computed. [2019-10-13 21:02:21,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:02:21,967 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:02:21,967 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:02:21,968 INFO L443 ceAbstractionStarter]: For program point errErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2019-10-13 21:02:21,968 INFO L443 ceAbstractionStarter]: For program point errEXIT(lines 13 14) no Hoare annotation was computed. [2019-10-13 21:02:21,968 INFO L446 ceAbstractionStarter]: At program point errENTRY(lines 13 14) the Hoare annotation is: true [2019-10-13 21:02:21,968 INFO L443 ceAbstractionStarter]: For program point errFINAL(lines 13 14) no Hoare annotation was computed. [2019-10-13 21:02:21,969 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)) [2019-10-13 21:02:21,970 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)) [2019-10-13 21:02:21,972 INFO L443 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2019-10-13 21:02:21,973 INFO L443 ceAbstractionStarter]: For program point mutex_lockFINAL(lines 16 20) no Hoare annotation was computed. [2019-10-13 21:02:21,973 INFO L443 ceAbstractionStarter]: For program point mutex_lockEXIT(lines 16 20) no Hoare annotation was computed. [2019-10-13 21:02:21,973 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-10-13 21:02:21,973 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:02:21,973 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:02:21,974 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:02:21,974 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:02:21,974 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|)) [2019-10-13 21:02:21,974 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|)) [2019-10-13 21:02:21,975 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 28 40) the Hoare annotation is: true [2019-10-13 21:02:21,975 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 28 40) no Hoare annotation was computed. [2019-10-13 21:02:21,975 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 28 40) no Hoare annotation was computed. [2019-10-13 21:02:21,976 INFO L443 ceAbstractionStarter]: For program point L35(line 35) no Hoare annotation was computed. [2019-10-13 21:02:21,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:02:21 BoogieIcfgContainer [2019-10-13 21:02:21,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:02:21,983 INFO L168 Benchmark]: Toolchain (without parser) took 1688.98 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 101.6 MB in the beginning and 118.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 40.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:21,984 INFO L168 Benchmark]: CDTParser took 2.31 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-13 21:02:21,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.68 ms. Allocated memory is still 143.1 MB. Free memory was 101.4 MB in the beginning and 91.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:21,986 INFO L168 Benchmark]: Boogie Preprocessor took 152.53 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 91.4 MB in the beginning and 179.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:21,987 INFO L168 Benchmark]: RCFGBuilder took 236.89 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 166.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:21,988 INFO L168 Benchmark]: TraceAbstraction took 988.07 ms. Allocated memory is still 201.3 MB. Free memory was 165.5 MB in the beginning and 118.8 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:21,992 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.31 ms. Allocated memory is still 143.1 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.68 ms. Allocated memory is still 143.1 MB. Free memory was 101.4 MB in the beginning and 91.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.53 ms. Allocated memory was 143.1 MB in the beginning and 201.3 MB in the end (delta: 58.2 MB). Free memory was 91.4 MB in the beginning and 179.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 236.89 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 166.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 988.07 ms. Allocated memory is still 201.3 MB. Free memory was 165.5 MB in the beginning and 118.8 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 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, 29 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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...