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/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 12:47:53,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 12:47:53,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 12:47:53,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 12:47:53,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 12:47:53,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 12:47:53,774 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 12:47:53,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 12:47:53,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 12:47:53,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 12:47:53,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 12:47:53,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 12:47:53,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 12:47:53,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 12:47:53,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 12:47:53,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 12:47:53,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 12:47:53,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 12:47:53,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 12:47:53,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 12:47:53,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 12:47:53,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 12:47:53,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 12:47:53,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 12:47:53,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-07 12:47:53,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 12:47:53,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 12:47:53,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 12:47:53,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-07 12:47:53,826 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 12:47:53,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 12:47:53,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 12:47:53,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 12:47:53,828 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 12:47:53,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 12:47:53,828 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 12:47:53,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 12:47:53,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 12:47:53,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 12:47:53,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 12:47:53,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 12:47:53,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 12:47:53,830 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 12:47:53,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 12:47:53,830 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 12:47:53,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 12:47:53,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 12:47:53,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 12:47:53,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 12:47:53,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 12:47:53,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 12:47:53,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 12:47:53,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 12:47:53,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 12:47:53,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 12:47:53,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 12:47:53,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 12:47:53,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 12:47:54,114 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 12:47:54,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 12:47:54,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 12:47:54,136 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 12:47:54,136 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 12:47:54,137 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2019-10-07 12:47:54,204 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfef84fed/e3cc2f5431454968ae180694e9406d89/FLAGb96c9a66a [2019-10-07 12:47:54,668 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 12:47:54,668 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2019-10-07 12:47:54,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfef84fed/e3cc2f5431454968ae180694e9406d89/FLAGb96c9a66a [2019-10-07 12:47:55,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfef84fed/e3cc2f5431454968ae180694e9406d89 [2019-10-07 12:47:55,030 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 12:47:55,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 12:47:55,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 12:47:55,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 12:47:55,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 12:47:55,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2066fc94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55, skipping insertion in model container [2019-10-07 12:47:55,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 12:47:55,064 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 12:47:55,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:47:55,297 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 12:47:55,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:47:55,330 INFO L192 MainTranslator]: Completed translation [2019-10-07 12:47:55,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55 WrapperNode [2019-10-07 12:47:55,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 12:47:55,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 12:47:55,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 12:47:55,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 12:47:55,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... [2019-10-07 12:47:55,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 12:47:55,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 12:47:55,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 12:47:55,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 12:47:55,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 12:47:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 12:47:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 12:47:55,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-07 12:47:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-07 12:47:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-07 12:47:55,529 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2019-10-07 12:47:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2019-10-07 12:47:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2019-10-07 12:47:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2019-10-07 12:47:55,530 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2019-10-07 12:47:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2019-10-07 12:47:55,531 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 12:47:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 12:47:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-07 12:47:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 12:47:55,531 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-07 12:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-07 12:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2019-10-07 12:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2019-10-07 12:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2019-10-07 12:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2019-10-07 12:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2019-10-07 12:47:55,532 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2019-10-07 12:47:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 12:47:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 12:47:55,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 12:47:55,913 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 12:47:55,913 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 12:47:55,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:47:55 BoogieIcfgContainer [2019-10-07 12:47:55,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 12:47:55,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 12:47:55,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 12:47:55,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 12:47:55,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:47:55" (1/3) ... [2019-10-07 12:47:55,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a139ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:47:55, skipping insertion in model container [2019-10-07 12:47:55,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:55" (2/3) ... [2019-10-07 12:47:55,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a139ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:47:55, skipping insertion in model container [2019-10-07 12:47:55,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:47:55" (3/3) ... [2019-10-07 12:47:55,922 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2019-10-07 12:47:55,930 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 12:47:55,936 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 12:47:55,944 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 12:47:55,968 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 12:47:55,968 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 12:47:55,968 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 12:47:55,968 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 12:47:55,968 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 12:47:55,969 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 12:47:55,969 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 12:47:55,969 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 12:47:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2019-10-07 12:47:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-07 12:47:55,995 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:55,995 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:55,998 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:56,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:56,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1533915537, now seen corresponding path program 1 times [2019-10-07 12:47:56,011 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:56,011 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,011 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,011 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:56,131 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,132 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:47:56,132 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 12:47:56,136 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 12:47:56,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 12:47:56,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 12:47:56,149 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2019-10-07 12:47:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:47:56,179 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2019-10-07 12:47:56,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 12:47:56,180 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-07 12:47:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:47:56,192 INFO L225 Difference]: With dead ends: 114 [2019-10-07 12:47:56,192 INFO L226 Difference]: Without dead ends: 55 [2019-10-07 12:47:56,196 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 12:47:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-07 12:47:56,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-10-07 12:47:56,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-07 12:47:56,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2019-10-07 12:47:56,242 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 14 [2019-10-07 12:47:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:47:56,242 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2019-10-07 12:47:56,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 12:47:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2019-10-07 12:47:56,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-07 12:47:56,244 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:56,244 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:56,244 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:56,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1690534739, now seen corresponding path program 1 times [2019-10-07 12:47:56,245 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:56,245 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,246 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,246 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:56,319 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,320 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:47:56,320 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 12:47:56,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 12:47:56,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 12:47:56,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 12:47:56,323 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand 3 states. [2019-10-07 12:47:56,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:47:56,362 INFO L93 Difference]: Finished difference Result 92 states and 119 transitions. [2019-10-07 12:47:56,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 12:47:56,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-07 12:47:56,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:47:56,367 INFO L225 Difference]: With dead ends: 92 [2019-10-07 12:47:56,368 INFO L226 Difference]: Without dead ends: 86 [2019-10-07 12:47:56,369 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 12:47:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-10-07 12:47:56,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2019-10-07 12:47:56,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-10-07 12:47:56,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2019-10-07 12:47:56,390 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 15 [2019-10-07 12:47:56,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:47:56,391 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2019-10-07 12:47:56,391 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 12:47:56,391 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2019-10-07 12:47:56,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-07 12:47:56,392 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:56,393 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:56,393 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:56,393 INFO L82 PathProgramCache]: Analyzing trace with hash 350118788, now seen corresponding path program 1 times [2019-10-07 12:47:56,394 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:56,394 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,394 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,394 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:56,465 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,465 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:47:56,465 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 12:47:56,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 12:47:56,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 12:47:56,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 12:47:56,467 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand 3 states. [2019-10-07 12:47:56,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:47:56,547 INFO L93 Difference]: Finished difference Result 186 states and 255 transitions. [2019-10-07 12:47:56,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 12:47:56,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-07 12:47:56,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:47:56,554 INFO L225 Difference]: With dead ends: 186 [2019-10-07 12:47:56,554 INFO L226 Difference]: Without dead ends: 109 [2019-10-07 12:47:56,556 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 12:47:56,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-07 12:47:56,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2019-10-07 12:47:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-10-07 12:47:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 145 transitions. [2019-10-07 12:47:56,587 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 145 transitions. Word has length 26 [2019-10-07 12:47:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:47:56,587 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 145 transitions. [2019-10-07 12:47:56,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 12:47:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 145 transitions. [2019-10-07 12:47:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-07 12:47:56,589 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:56,589 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:56,590 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:56,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1904034500, now seen corresponding path program 1 times [2019-10-07 12:47:56,590 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:56,591 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,591 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,591 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:56,668 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:56,668 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 12:47:56,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:47:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:56,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 12:47:56,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 12:47:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:56,765 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 12:47:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:56,807 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 12:47:56,833 INFO L162 IcfgInterpreter]: Started Sifa with 33 locations of interest [2019-10-07 12:47:56,833 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 12:47:56,839 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 12:47:56,847 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 12:47:56,848 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 12:47:56,965 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 15 for LOIs [2019-10-07 12:47:59,816 INFO L199 IcfgInterpreter]: Interpreting procedure my_init with input of size 9 for LOIs [2019-10-07 12:47:59,821 INFO L199 IcfgInterpreter]: Interpreting procedure misc_open with input of size 13 for LOIs [2019-10-07 12:47:59,829 INFO L199 IcfgInterpreter]: Interpreting procedure misc_release with input of size 1 for LOIs [2019-10-07 12:47:59,833 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-10-07 12:47:59,835 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-07 12:47:59,836 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-07 12:47:59,836 INFO L193 IcfgInterpreter]: Reachable states at location L76-1 satisfy 1343#(and (<= main_~ldv_s_misc_fops_file_operations~0 1) (or (and (<= 0 (+ |main_#t~nondet2| 2147483648)) (<= 0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (= (+ main_~ldv_s_misc_fops_file_operations~0 (- 1)) 0) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= 1 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet2| 2147483647) (= |old(~ldv_mutex~0)| 1)) (and (<= 0 (+ |main_#t~nondet2| 2147483648)) (<= 0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 0 ~open_called~0) (= 0 main_~ldv_s_misc_fops_file_operations~0) (= ~open_called~0 0) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet2| 2147483647))) (<= |old(~open_called~0)| 0) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,836 INFO L193 IcfgInterpreter]: Reachable states at location L78 satisfy 571#(and (<= 0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (<= 0 |main_#t~nondet3|) (<= main_~ldv_s_misc_fops_file_operations~0 1) (= |main_#t~nondet3| 0) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= 1 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= 1 main_~ldv_s_misc_fops_file_operations~0) (<= |main_#t~nondet3| 0) (= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,837 INFO L193 IcfgInterpreter]: Reachable states at location my_initENTRY satisfy 1409#(and (<= 0 |old(~open_called~0)|) (= ~open_called~0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= |old(~open_called~0)| 0) (<= ~open_called~0 0) (<= 0 ~open_called~0) (<= |old(~open_called~0)| 0)) [2019-10-07 12:47:59,837 INFO L193 IcfgInterpreter]: Reachable states at location mutex_lockEXIT satisfy 2#false [2019-10-07 12:47:59,837 INFO L193 IcfgInterpreter]: Reachable states at location L80 satisfy 1277#(and (<= 0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= |old(~open_called~0)| 0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet3| 2147483647) (<= main_~ldv_s_misc_fops_file_operations~0 1) (= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0) (<= 0 (+ |main_#t~nondet3| 2147483648)) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,837 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (<= 1 ~ldv_mutex~0) (= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= 0 ~open_called~0) (= ~open_called~0 0)) [2019-10-07 12:47:59,838 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (<= 0 |old(~open_called~0)|) (= ~open_called~0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (<= ~open_called~0 0) (<= 1 |old(~ldv_mutex~0)|) (<= 0 ~open_called~0) (<= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0)) [2019-10-07 12:47:59,838 INFO L193 IcfgInterpreter]: Reachable states at location L36-1 satisfy 2#false [2019-10-07 12:47:59,838 INFO L193 IcfgInterpreter]: Reachable states at location L82-1 satisfy 868#(and (<= 0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (<= 0 |main_#t~ret5|) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 0 |main_#t~nondet3|) (= |main_#t~nondet3| 0) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= |main_#t~ret5| 1) (= main_~ldv_s_misc_fops_file_operations~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet3| 0) (= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,838 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 1432#false [2019-10-07 12:47:59,839 INFO L193 IcfgInterpreter]: Reachable states at location L82 satisfy 1042#(and (or (and (<= 0 |old(~open_called~0)|) (= 0 |main_#t~nondet3|) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= |main_#t~nondet3| 2147483647) (= 0 main_~ldv_s_misc_fops_file_operations~0) |main_#t~switch4| (= ~open_called~0 0) (<= 0 (+ |main_#t~nondet3| 2147483648))) (and (<= 0 |old(~open_called~0)|) (= 0 |main_#t~nondet3|) (= |old(~open_called~0)| 0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= |main_#t~nondet3| 2147483647) (<= main_~ldv_s_misc_fops_file_operations~0 1) (= 0 main_~ldv_s_misc_fops_file_operations~0) |main_#t~switch4| (= (+ main_~ldv_s_misc_fops_file_operations~0 (- 1)) 0) (<= 1 main_~ldv_s_misc_fops_file_operations~0) (= |old(~ldv_mutex~0)| 1) (<= 0 (+ |main_#t~nondet3| 2147483648)))) (<= 0 ~open_called~0) (<= 0 |main_#t~nondet3|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet3| 0) (<= |old(~open_called~0)| 0) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,839 INFO L193 IcfgInterpreter]: Reachable states at location L104 satisfy 754#(and (<= 0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= |old(~open_called~0)| 0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet3| 2147483647) (<= main_~ldv_s_misc_fops_file_operations~0 1) (= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0) (<= 0 (+ |main_#t~nondet3| 2147483648)) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,839 INFO L193 IcfgInterpreter]: Reachable states at location misc_openEXIT satisfy 1423#(and (or (and (= 1 |misc_open_#res|) (= ~open_called~0 |old(~open_called~0)|) (= 1 ~ldv_mutex~0) (= |old(~open_called~0)| 0)) (and (= 1 ~ldv_mutex~0) (= |old(~open_called~0)| 0) (= ~open_called~0 1) (= 0 |misc_open_#res|))) (or (and (<= 0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= |misc_open_#res| 0) (<= ~ldv_mutex~0 1) (<= 1 ~open_called~0) (<= 0 |misc_open_#res|) (<= |old(~open_called~0)| 0) (<= ~open_called~0 1)) (and (<= 0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= 0 ~open_called~0) (<= 1 |misc_open_#res|) (<= |misc_open_#res| 1) (<= |old(~open_called~0)| 0)))) [2019-10-07 12:47:59,840 INFO L193 IcfgInterpreter]: Reachable states at location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 2#false [2019-10-07 12:47:59,840 INFO L193 IcfgInterpreter]: Reachable states at location L75-1 satisfy 55#(and (<= 0 |old(~open_called~0)|) (= 0 |main_#t~ret1|) (<= 0 |main_#t~ret1|) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 0 ~open_called~0) (<= |main_#t~ret1| 0) (= 0 main_~ldv_s_misc_fops_file_operations~0) (= ~open_called~0 0) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0) (<= 1 |old(~ldv_mutex~0)|) (<= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0)) [2019-10-07 12:47:59,840 INFO L193 IcfgInterpreter]: Reachable states at location L106 satisfy 337#false [2019-10-07 12:47:59,840 INFO L193 IcfgInterpreter]: Reachable states at location L75 satisfy 38#(and (<= 0 |old(~open_called~0)|) (= ~open_called~0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 0 ~open_called~0) (= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0) (<= 1 |old(~ldv_mutex~0)|) (<= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0)) [2019-10-07 12:47:59,841 INFO L193 IcfgInterpreter]: Reachable states at location my_initEXIT satisfy 1414#(and (= 0 |my_init_#res|) (<= 0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= |old(~open_called~0)| 0) (<= |my_init_#res| 0) (<= ~open_called~0 0) (<= 0 |my_init_#res|) (<= 0 ~open_called~0) (= ~open_called~0 0) (<= |old(~open_called~0)| 0)) [2019-10-07 12:47:59,841 INFO L193 IcfgInterpreter]: Reachable states at location mutex_unlockENTRY satisfy 2#false [2019-10-07 12:47:59,841 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 1436#(and (= ~open_called~0 |old(~open_called~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0)) [2019-10-07 12:47:59,842 INFO L193 IcfgInterpreter]: Reachable states at location mutex_lockENTRY satisfy 2#false [2019-10-07 12:47:59,842 INFO L193 IcfgInterpreter]: Reachable states at location L88 satisfy 1203#(and (<= 0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= |old(~open_called~0)| 0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet3| 2147483647) (<= main_~ldv_s_misc_fops_file_operations~0 1) (= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0) (<= 0 (+ |main_#t~nondet3| 2147483648)) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,842 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 1441#(and (<= 1 ~ldv_mutex~0) (= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= 0 ~open_called~0) (= ~open_called~0 0)) [2019-10-07 12:47:59,842 INFO L193 IcfgInterpreter]: Reachable states at location L22-1 satisfy 2#false [2019-10-07 12:47:59,843 INFO L193 IcfgInterpreter]: Reachable states at location L81 satisfy 1121#(and (or (and (<= 0 |old(~open_called~0)|) (= 0 |main_#t~nondet3|) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (<= 0 ~open_called~0) (<= |main_#t~nondet3| 2147483647) (= 0 main_~ldv_s_misc_fops_file_operations~0) |main_#t~switch4| (= ~open_called~0 0) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0) (<= 0 (+ |main_#t~nondet3| 2147483648))) (and (<= 0 |old(~open_called~0)|) (= 0 |main_#t~nondet3|) (= |old(~open_called~0)| 0) (<= |main_#t~nondet3| 2147483647) |main_#t~switch4| (<= 1 ~ldv_mutex~0) (= (+ main_~ldv_s_misc_fops_file_operations~0 (- 1)) 0) (<= ~ldv_mutex~0 1) (<= 1 main_~ldv_s_misc_fops_file_operations~0) (= |old(~ldv_mutex~0)| 1) (<= 0 (+ |main_#t~nondet3| 2147483648)))) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= 0 |main_#t~nondet3|) (<= main_~ldv_s_misc_fops_file_operations~0 1) (<= |main_#t~nondet3| 0) (<= |old(~open_called~0)| 0) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,843 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-07 12:47:59,843 INFO L193 IcfgInterpreter]: Reachable states at location misc_openENTRY satisfy 1418#(and (<= 0 |old(~open_called~0)|) (= ~open_called~0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= 1 ~ldv_mutex~0) (= |old(~open_called~0)| 0) (<= ~open_called~0 0) (<= 0 ~open_called~0) (<= |old(~open_called~0)| 0)) [2019-10-07 12:47:59,843 INFO L193 IcfgInterpreter]: Reachable states at location __blast_assertENTRY satisfy 2#false [2019-10-07 12:47:59,844 INFO L193 IcfgInterpreter]: Reachable states at location L76-3 satisfy 1404#(and (or (and (<= 0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (<= 0 ~open_called~0) (= 0 main_~ldv_s_misc_fops_file_operations~0) (= ~open_called~0 0) (<= ~open_called~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0)) (and (<= 0 |old(~open_called~0)|) (= (+ main_~ldv_s_misc_fops_file_operations~0 (- 1)) 0) (= |old(~open_called~0)| 0) (<= 1 main_~ldv_s_misc_fops_file_operations~0) (= |old(~ldv_mutex~0)| 1))) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= main_~ldv_s_misc_fops_file_operations~0 1) (<= |old(~open_called~0)| 0) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,844 INFO L193 IcfgInterpreter]: Reachable states at location L105 satisfy 440#(and (or (and (<= 0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (not (= 1 |main_#t~nondet3|)) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= |main_#t~nondet3| 2147483647) (not (= 0 |main_#t~nondet3|)) |main_#t~switch4| (= 3 |main_#t~nondet3|) (<= 1 ~ldv_mutex~0) (= (+ main_~ldv_s_misc_fops_file_operations~0 (- 1)) 0) (<= ~ldv_mutex~0 1) (<= 1 main_~ldv_s_misc_fops_file_operations~0) (not (= 2 |main_#t~nondet3|)) (= |old(~ldv_mutex~0)| 1) (<= 0 (+ |main_#t~nondet3| 2147483648))) (and (<= 0 |old(~open_called~0)|) (= |old(~open_called~0)| 0) (= 1 |old(~ldv_mutex~0)|) (= |old(~ldv_mutex~0)| ~ldv_mutex~0) (not (= 1 |main_#t~nondet3|)) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 0 ~open_called~0) (<= |main_#t~nondet3| 2147483647) (not (= 0 |main_#t~nondet3|)) |main_#t~switch4| (= 0 main_~ldv_s_misc_fops_file_operations~0) (= ~open_called~0 0) (= 3 |main_#t~nondet3|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (<= ~open_called~0 0) (<= main_~ldv_s_misc_fops_file_operations~0 0) (not (= 2 |main_#t~nondet3|)) (<= 0 (+ |main_#t~nondet3| 2147483648)))) (<= 3 |main_#t~nondet3|) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet3| 3) (<= main_~ldv_s_misc_fops_file_operations~0 1) (<= |old(~open_called~0)| 0) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,844 INFO L193 IcfgInterpreter]: Reachable states at location misc_releaseENTRY satisfy 1427#false [2019-10-07 12:47:59,845 INFO L193 IcfgInterpreter]: Reachable states at location L96 satisfy 958#(and (<= 0 |old(~open_called~0)|) (<= 1 ~ldv_mutex~0) (<= ~ldv_mutex~0 1) (= |old(~open_called~0)| 0) (<= 0 main_~ldv_s_misc_fops_file_operations~0) (<= 1 |old(~ldv_mutex~0)|) (<= |main_#t~nondet3| 2147483647) (<= main_~ldv_s_misc_fops_file_operations~0 1) (= |old(~ldv_mutex~0)| 1) (<= |old(~open_called~0)| 0) (<= 0 (+ |main_#t~nondet3| 2147483648)) (<= |old(~ldv_mutex~0)| 1)) [2019-10-07 12:47:59,845 INFO L193 IcfgInterpreter]: Reachable states at location L16-2 satisfy 2#false [2019-10-07 12:48:00,312 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2019-10-07 12:48:00,516 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2019-10-07 12:48:01,014 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 22 [2019-10-07 12:48:01,015 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-07 12:48:01,015 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [5, 4, 4] total 22 [2019-10-07 12:48:01,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-07 12:48:01,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-07 12:48:01,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2019-10-07 12:48:01,018 INFO L87 Difference]: Start difference. First operand 108 states and 145 transitions. Second operand 18 states. [2019-10-07 12:48:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:48:01,774 INFO L93 Difference]: Finished difference Result 251 states and 347 transitions. [2019-10-07 12:48:01,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-07 12:48:01,775 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 35 [2019-10-07 12:48:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:48:01,781 INFO L225 Difference]: With dead ends: 251 [2019-10-07 12:48:01,782 INFO L226 Difference]: Without dead ends: 152 [2019-10-07 12:48:01,784 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 87 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2019-10-07 12:48:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-10-07 12:48:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 134. [2019-10-07 12:48:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2019-10-07 12:48:01,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 181 transitions. [2019-10-07 12:48:01,819 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 181 transitions. Word has length 35 [2019-10-07 12:48:01,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:48:01,820 INFO L462 AbstractCegarLoop]: Abstraction has 134 states and 181 transitions. [2019-10-07 12:48:01,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-07 12:48:01,820 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 181 transitions. [2019-10-07 12:48:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-07 12:48:01,822 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:48:01,822 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:48:02,024 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:48:02,025 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:48:02,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:48:02,026 INFO L82 PathProgramCache]: Analyzing trace with hash -852685177, now seen corresponding path program 1 times [2019-10-07 12:48:02,027 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:48:02,027 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:02,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:02,028 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:48:02,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:48:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-07 12:48:02,084 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:02,085 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:48:02,085 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 12:48:02,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 12:48:02,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 12:48:02,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:48:02,086 INFO L87 Difference]: Start difference. First operand 134 states and 181 transitions. Second operand 4 states. [2019-10-07 12:48:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:48:02,145 INFO L93 Difference]: Finished difference Result 301 states and 429 transitions. [2019-10-07 12:48:02,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 12:48:02,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2019-10-07 12:48:02,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:48:02,148 INFO L225 Difference]: With dead ends: 301 [2019-10-07 12:48:02,148 INFO L226 Difference]: Without dead ends: 202 [2019-10-07 12:48:02,150 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-07 12:48:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-10-07 12:48:02,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2019-10-07 12:48:02,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-10-07 12:48:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 253 transitions. [2019-10-07 12:48:02,170 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 253 transitions. Word has length 45 [2019-10-07 12:48:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:48:02,173 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 253 transitions. [2019-10-07 12:48:02,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 12:48:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 253 transitions. [2019-10-07 12:48:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-07 12:48:02,176 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:48:02,176 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:48:02,176 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:48:02,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:48:02,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1405166671, now seen corresponding path program 1 times [2019-10-07 12:48:02,179 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:48:02,179 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:02,179 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:02,179 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:48:02,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:48:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-07 12:48:02,251 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:02,251 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:48:02,251 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 12:48:02,251 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 12:48:02,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 12:48:02,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 12:48:02,252 INFO L87 Difference]: Start difference. First operand 178 states and 253 transitions. Second operand 3 states. [2019-10-07 12:48:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:48:02,275 INFO L93 Difference]: Finished difference Result 254 states and 360 transitions. [2019-10-07 12:48:02,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 12:48:02,277 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-10-07 12:48:02,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:48:02,279 INFO L225 Difference]: With dead ends: 254 [2019-10-07 12:48:02,279 INFO L226 Difference]: Without dead ends: 111 [2019-10-07 12:48:02,280 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 12:48:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2019-10-07 12:48:02,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2019-10-07 12:48:02,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2019-10-07 12:48:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 148 transitions. [2019-10-07 12:48:02,295 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 148 transitions. Word has length 56 [2019-10-07 12:48:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:48:02,296 INFO L462 AbstractCegarLoop]: Abstraction has 111 states and 148 transitions. [2019-10-07 12:48:02,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 12:48:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 148 transitions. [2019-10-07 12:48:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-07 12:48:02,299 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:48:02,300 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:48:02,300 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:48:02,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:48:02,303 INFO L82 PathProgramCache]: Analyzing trace with hash -657034657, now seen corresponding path program 1 times [2019-10-07 12:48:02,304 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:48:02,304 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:48:02,304 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:02,304 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:48:02,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:48:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 12:48:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 12:48:02,381 INFO L161 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-07 12:48:02,381 INFO L451 BasicCegarLoop]: Counterexample might be feasible [2019-10-07 12:48:02,404 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,405 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,406 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,406 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,407 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,407 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,408 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,408 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,408 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,409 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,409 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,410 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,410 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,410 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement [2019-10-07 12:48:02,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 12:48:02 BoogieIcfgContainer [2019-10-07 12:48:02,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 12:48:02,425 INFO L168 Benchmark]: Toolchain (without parser) took 7393.44 ms. Allocated memory was 144.7 MB in the beginning and 310.9 MB in the end (delta: 166.2 MB). Free memory was 101.9 MB in the beginning and 95.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 172.3 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:02,426 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 12:48:02,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.54 ms. Allocated memory is still 144.7 MB. Free memory was 101.7 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:02,428 INFO L168 Benchmark]: Boogie Preprocessor took 138.74 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 91.4 MB in the beginning and 181.2 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:02,429 INFO L168 Benchmark]: RCFGBuilder took 444.24 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 158.1 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:02,429 INFO L168 Benchmark]: TraceAbstraction took 6507.84 ms. Allocated memory was 202.9 MB in the beginning and 310.9 MB in the end (delta: 108.0 MB). Free memory was 157.4 MB in the beginning and 95.7 MB in the end (delta: 61.7 MB). Peak memory consumption was 169.7 MB. Max. memory is 7.1 GB. [2019-10-07 12:48:02,433 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 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.54 ms. Allocated memory is still 144.7 MB. Free memory was 101.7 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.74 ms. Allocated memory was 144.7 MB in the beginning and 202.9 MB in the end (delta: 58.2 MB). Free memory was 91.4 MB in the beginning and 181.2 MB in the end (delta: -89.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.24 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 158.1 MB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6507.84 ms. Allocated memory was 202.9 MB in the beginning and 310.9 MB in the end (delta: 108.0 MB). Free memory was 157.4 MB in the beginning and 95.7 MB in the end (delta: 61.7 MB). Peak memory consumption was 169.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression #t~switch4 has a C AST node but it is no IASTExpression: class org.eclipse.cdt.internal.core.dom.parser.c.CASTSwitchStatement * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; [L74] int ldv_s_misc_fops_file_operations = 0; VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L75] CALL my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L69] open_called = 0 [L70] return 0; [L75] RET my_init() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, my_init()=0, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, open_called=0] [L82] CALL misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; [L82] RET misc_open() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=0, misc_open()=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=0, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, open_called=0] [L90] CALL misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L52] return 0; [L90] RET misc_read() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=1, misc_read()=0, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=1, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, open_called=0] [L98] CALL misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L48] return 0; [L98] RET misc_llseek() VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=2, misc_llseek()=0, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=2, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 VAL [\old(ldv_mutex)=1, \old(open_called)=0, __VERIFIER_nondet_int()=3, ldv_mutex=1, ldv_s_misc_fops_file_operations=3, open_called=0] [L106] CALL misc_release() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L34] COND FALSE !(\read(open_called)) VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L41] CALL mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 [L41] RET mutex_lock() VAL [\old(ldv_mutex)=1, \old(open_called)=0, ldv_mutex=2, open_called=0] [L42] CALL mutex_lock() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L16] CALL __blast_assert() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [\old(ldv_mutex)=2, \old(open_called)=0, ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 62 locations, 1 error locations. Result: UNSAFE, OverallTime: 6.4s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 376 SDtfs, 198 SDslu, 391 SDs, 0 SdLazy, 392 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 43 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 282 NumberOfCodeBlocks, 282 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 253 ConstructedInterpolants, 0 QuantifiedInterpolants, 14595 SizeOfPredicates, 1 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 36/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 3012, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 337, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 245, TOOLS_POST_TIME[ms]: 171, TOOLS_POST_CALL_APPLICATIONS: 69, TOOLS_POST_CALL_TIME[ms]: 120, TOOLS_POST_RETURN_APPLICATIONS: 64, TOOLS_POST_RETURN_TIME[ms]: 109, TOOLS_QUANTIFIERELIM_APPLICATIONS: 377, TOOLS_QUANTIFIERELIM_TIME[ms]: 287, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 10, FLUID_QUERY_TIME[ms]: 16, FLUID_QUERIES: 365, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 177, DOMAIN_JOIN_TIME[ms]: 2227, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 14, DOMAIN_WIDEN_TIME[ms]: 129, DOMAIN_ISSUBSETEQ_APPLICATIONS: 28, DOMAIN_ISSUBSETEQ_TIME[ms]: 47, DOMAIN_ISBOTTOM_APPLICATIONS: 35, DOMAIN_ISBOTTOM_TIME[ms]: 69, LOOP_SUMMARIZER_APPLICATIONS: 14, LOOP_SUMMARIZER_CACHE_MISSES: 14, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 1202, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 1200, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 28, CALL_SUMMARIZER_APPLICATIONS: 64, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME[ms]: 57, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 56, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 31, DAG_COMPRESSION_PROCESSED_NODES: 245, DAG_COMPRESSION_RETAINED_NODES: 164, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...