./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:13:18,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:13:18,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:13:19,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:13:19,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:13:19,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:13:19,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:13:19,045 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:13:19,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:13:19,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:13:19,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:13:19,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:13:19,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:13:19,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:13:19,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:13:19,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:13:19,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:13:19,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:13:19,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:13:19,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:13:19,073 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:13:19,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:13:19,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:13:19,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:13:19,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:13:19,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:13:19,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:13:19,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:13:19,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:13:19,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:13:19,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:13:19,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:13:19,090 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:13:19,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:13:19,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:13:19,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:13:19,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:13:19,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:13:19,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:13:19,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:13:19,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:13:19,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:13:19,103 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:13:19,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:13:19,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:13:19,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:13:19,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:13:19,137 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:13:19,137 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:13:19,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:13:19,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:13:19,140 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:13:19,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:13:19,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:13:19,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:13:19,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:13:19,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:13:19,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:13:19,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:13:19,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:13:19,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:13:19,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:13:19,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:13:19,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:13:19,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:13:19,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:13:19,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:13:19,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:13:19,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:13:19,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:13:19,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:13:19,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:13:19,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:13:19,156 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:13:19,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:13:19,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:13:19,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf [2022-07-21 02:13:19,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:13:19,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:13:19,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:13:19,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:13:19,506 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:13:19,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2022-07-21 02:13:19,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c9c5f9e/d415b14bd20043e98b99ddd9d820777b/FLAGbc01a0a8e [2022-07-21 02:13:20,109 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:13:20,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2022-07-21 02:13:20,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c9c5f9e/d415b14bd20043e98b99ddd9d820777b/FLAGbc01a0a8e [2022-07-21 02:13:20,574 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4c9c5f9e/d415b14bd20043e98b99ddd9d820777b [2022-07-21 02:13:20,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:13:20,577 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:13:20,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:13:20,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:13:20,582 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:13:20,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:13:20" (1/1) ... [2022-07-21 02:13:20,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438a81c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:20, skipping insertion in model container [2022-07-21 02:13:20,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:13:20" (1/1) ... [2022-07-21 02:13:20,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:13:20,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:13:20,977 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2022-07-21 02:13:20,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2022-07-21 02:13:20,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2022-07-21 02:13:20,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:13:20,992 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:13:21,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2022-07-21 02:13:21,027 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2022-07-21 02:13:21,027 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2022-07-21 02:13:21,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:13:21,055 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:13:21,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21 WrapperNode [2022-07-21 02:13:21,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:13:21,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:13:21,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:13:21,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:13:21,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,103 INFO L137 Inliner]: procedures = 139, calls = 56, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 128 [2022-07-21 02:13:21,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:13:21,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:13:21,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:13:21,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:13:21,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:13:21,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:13:21,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:13:21,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:13:21,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (1/1) ... [2022-07-21 02:13:21,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:13:21,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:13:21,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:13:21,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:13:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-21 02:13:21,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-21 02:13:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 02:13:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 02:13:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 02:13:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:13:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 02:13:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-07-21 02:13:21,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-07-21 02:13:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 02:13:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 02:13:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 02:13:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:13:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-07-21 02:13:21,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-07-21 02:13:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:13:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:13:21,389 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:13:21,391 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:13:21,598 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:13:21,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:13:21,605 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 02:13:21,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:13:21 BoogieIcfgContainer [2022-07-21 02:13:21,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:13:21,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:13:21,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:13:21,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:13:21,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:13:20" (1/3) ... [2022-07-21 02:13:21,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25153431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:13:21, skipping insertion in model container [2022-07-21 02:13:21,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:21" (2/3) ... [2022-07-21 02:13:21,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25153431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:13:21, skipping insertion in model container [2022-07-21 02:13:21,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:13:21" (3/3) ... [2022-07-21 02:13:21,614 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2022-07-21 02:13:21,627 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:13:21,627 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-21 02:13:21,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:13:21,699 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7bf4f6b0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cb067b5 [2022-07-21 02:13:21,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 02:13:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 02:13:21,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 02:13:21,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:21,722 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:21,723 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:21,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1577806477, now seen corresponding path program 1 times [2022-07-21 02:13:21,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:13:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957164218] [2022-07-21 02:13:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:21,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:13:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:21,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 02:13:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 02:13:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 02:13:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 02:13:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:13:22,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957164218] [2022-07-21 02:13:22,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957164218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:22,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:22,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 02:13:22,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321087840] [2022-07-21 02:13:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:22,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 02:13:22,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:13:22,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 02:13:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:13:22,055 INFO L87 Difference]: Start difference. First operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 02:13:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:22,161 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2022-07-21 02:13:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 02:13:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-07-21 02:13:22,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:22,175 INFO L225 Difference]: With dead ends: 131 [2022-07-21 02:13:22,176 INFO L226 Difference]: Without dead ends: 64 [2022-07-21 02:13:22,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 02:13:22,184 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:22,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 109 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:13:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-21 02:13:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-07-21 02:13:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 02:13:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2022-07-21 02:13:22,223 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 28 [2022-07-21 02:13:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:22,224 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2022-07-21 02:13:22,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 02:13:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2022-07-21 02:13:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 02:13:22,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:22,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:22,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:13:22,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:22,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:22,227 INFO L85 PathProgramCache]: Analyzing trace with hash -109345869, now seen corresponding path program 1 times [2022-07-21 02:13:22,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:13:22,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43865063] [2022-07-21 02:13:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:13:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 02:13:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 02:13:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 02:13:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 02:13:22,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:13:22,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43865063] [2022-07-21 02:13:22,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43865063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:22,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:22,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 02:13:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834790490] [2022-07-21 02:13:22,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 02:13:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:13:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 02:13:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:13:22,401 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:22,508 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2022-07-21 02:13:22,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 02:13:22,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-07-21 02:13:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:22,511 INFO L225 Difference]: With dead ends: 70 [2022-07-21 02:13:22,511 INFO L226 Difference]: Without dead ends: 68 [2022-07-21 02:13:22,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 02:13:22,513 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 23 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:22,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 202 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 02:13:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-21 02:13:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2022-07-21 02:13:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 50 states have internal predecessors, (55), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-21 02:13:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2022-07-21 02:13:22,524 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 28 [2022-07-21 02:13:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:22,525 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2022-07-21 02:13:22,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2022-07-21 02:13:22,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 02:13:22,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:22,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:22,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:13:22,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:22,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1465257436, now seen corresponding path program 1 times [2022-07-21 02:13:22,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:13:22,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852522831] [2022-07-21 02:13:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:22,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:13:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 02:13:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 02:13:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 02:13:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:22,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 02:13:22,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:13:22,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852522831] [2022-07-21 02:13:22,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852522831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:22,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:22,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 02:13:22,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126329002] [2022-07-21 02:13:22,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:22,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 02:13:22,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:13:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 02:13:22,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 02:13:22,703 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:23,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:23,206 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2022-07-21 02:13:23,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 02:13:23,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-07-21 02:13:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:23,214 INFO L225 Difference]: With dead ends: 186 [2022-07-21 02:13:23,214 INFO L226 Difference]: Without dead ends: 129 [2022-07-21 02:13:23,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-07-21 02:13:23,217 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 120 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:23,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 255 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 02:13:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-21 02:13:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 99. [2022-07-21 02:13:23,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 77 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (21), 14 states have call predecessors, (21), 14 states have call successors, (21) [2022-07-21 02:13:23,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2022-07-21 02:13:23,242 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 28 [2022-07-21 02:13:23,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:23,244 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2022-07-21 02:13:23,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:23,244 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2022-07-21 02:13:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-21 02:13:23,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:23,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-21 02:13:23,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 02:13:23,250 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:23,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1566335676, now seen corresponding path program 1 times [2022-07-21 02:13:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:13:23,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507285695] [2022-07-21 02:13:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:23,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:13:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:23,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 02:13:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 02:13:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 02:13:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 02:13:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:24,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 02:13:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 02:13:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 02:13:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 02:13:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 02:13:24,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:13:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507285695] [2022-07-21 02:13:24,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507285695] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 02:13:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434299703] [2022-07-21 02:13:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:24,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:13:24,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:13:24,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 02:13:24,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 02:13:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:24,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 218 conjunts are in the unsatisfiable core [2022-07-21 02:13:24,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:13:25,205 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-21 02:13:25,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-21 02:13:25,575 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-21 02:13:25,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-07-21 02:13:25,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 02:13:25,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 02:13:29,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:13:29,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:13:29,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 02:13:29,590 INFO L356 Elim1Store]: treesize reduction 168, result has 22.9 percent of original size [2022-07-21 02:13:29,592 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-21 02:13:29,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 02:13:29,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 02:13:29,793 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_4| input size 82 context size 82 output size 82 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 02:13:29,796 INFO L158 Benchmark]: Toolchain (without parser) took 9219.41ms. Allocated memory was 50.3MB in the beginning and 117.4MB in the end (delta: 67.1MB). Free memory was 25.4MB in the beginning and 75.4MB in the end (delta: -50.0MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2022-07-21 02:13:29,798 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:13:29,798 INFO L158 Benchmark]: CACSL2BoogieTranslator took 477.32ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 25.2MB in the beginning and 38.3MB in the end (delta: -13.1MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2022-07-21 02:13:29,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.40ms. Allocated memory is still 65.0MB. Free memory was 38.3MB in the beginning and 35.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:13:29,799 INFO L158 Benchmark]: Boogie Preprocessor took 30.50ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 33.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:13:29,799 INFO L158 Benchmark]: RCFGBuilder took 471.55ms. Allocated memory is still 65.0MB. Free memory was 33.7MB in the beginning and 33.9MB in the end (delta: -172.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-21 02:13:29,800 INFO L158 Benchmark]: TraceAbstraction took 8187.64ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 33.3MB in the beginning and 75.4MB in the end (delta: -42.1MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2022-07-21 02:13:29,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 50.3MB. Free memory was 31.9MB in the beginning and 31.9MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 477.32ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 25.2MB in the beginning and 38.3MB in the end (delta: -13.1MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.40ms. Allocated memory is still 65.0MB. Free memory was 38.3MB in the beginning and 35.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.50ms. Allocated memory is still 65.0MB. Free memory was 35.8MB in the beginning and 33.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 471.55ms. Allocated memory is still 65.0MB. Free memory was 33.7MB in the beginning and 33.9MB in the end (delta: -172.4kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8187.64ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 33.3MB in the beginning and 75.4MB in the end (delta: -42.1MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_4| input size 82 context size 82 output size 82 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_4| input size 82 context size 82 output size 82: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-21 02:13:29,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:13:31,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:13:31,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:13:31,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:13:31,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:13:31,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:13:31,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:13:31,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:13:31,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:13:31,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:13:31,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:13:31,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:13:31,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:13:31,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:13:31,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:13:31,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:13:31,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:13:31,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:13:31,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:13:31,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:13:31,784 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:13:31,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:13:31,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:13:31,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:13:31,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:13:31,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:13:31,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:13:31,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:13:31,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:13:31,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:13:31,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:13:31,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:13:31,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:13:31,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:13:31,803 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:13:31,804 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:13:31,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:13:31,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:13:31,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:13:31,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:13:31,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:13:31,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:13:31,816 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 02:13:31,847 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:13:31,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:13:31,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:13:31,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:13:31,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:13:31,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:13:31,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:13:31,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:13:31,851 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:13:31,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:13:31,852 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:13:31,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:13:31,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:13:31,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:13:31,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:13:31,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:13:31,854 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 02:13:31,854 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 02:13:31,854 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 02:13:31,854 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:13:31,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:13:31,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:13:31,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:13:31,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:13:31,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:13:31,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:13:31,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:13:31,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:13:31,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:13:31,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:13:31,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 02:13:31,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 02:13:31,858 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:13:31,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:13:31,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:13:31,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 02:13:31,859 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf [2022-07-21 02:13:32,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:13:32,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:13:32,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:13:32,240 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:13:32,242 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:13:32,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2022-07-21 02:13:32,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1b96cab/e513340b66ea413aab5e5faa7b0bb8d4/FLAGf85f8b0f0 [2022-07-21 02:13:32,754 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:13:32,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2022-07-21 02:13:32,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1b96cab/e513340b66ea413aab5e5faa7b0bb8d4/FLAGf85f8b0f0 [2022-07-21 02:13:33,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d1b96cab/e513340b66ea413aab5e5faa7b0bb8d4 [2022-07-21 02:13:33,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:13:33,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:13:33,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:13:33,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:13:33,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:13:33,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea2cd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33, skipping insertion in model container [2022-07-21 02:13:33,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:13:33,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:13:33,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2022-07-21 02:13:33,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2022-07-21 02:13:33,578 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2022-07-21 02:13:33,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:13:33,603 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 02:13:33,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:13:33,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2022-07-21 02:13:33,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2022-07-21 02:13:33,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2022-07-21 02:13:33,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:13:33,673 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:13:33,730 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25842,25855] [2022-07-21 02:13:33,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[25967,25980] [2022-07-21 02:13:33,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i[26082,26095] [2022-07-21 02:13:33,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:13:33,773 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:13:33,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33 WrapperNode [2022-07-21 02:13:33,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:13:33,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:13:33,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:13:33,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:13:33,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,856 INFO L137 Inliner]: procedures = 140, calls = 56, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 124 [2022-07-21 02:13:33,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:13:33,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:13:33,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:13:33,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:13:33,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:13:33,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:13:33,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:13:33,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:13:33,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (1/1) ... [2022-07-21 02:13:33,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:13:33,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:13:33,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 02:13:33,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 02:13:33,978 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-21 02:13:33,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-21 02:13:33,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 02:13:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 02:13:33,981 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 02:13:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:13:33,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 02:13:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-07-21 02:13:33,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-07-21 02:13:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 02:13:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 02:13:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 02:13:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 02:13:33,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-07-21 02:13:33,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-07-21 02:13:33,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:13:33,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:13:34,084 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:13:34,086 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:13:34,433 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:13:34,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:13:34,439 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 02:13:34,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:13:34 BoogieIcfgContainer [2022-07-21 02:13:34,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:13:34,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:13:34,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:13:34,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:13:34,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:13:33" (1/3) ... [2022-07-21 02:13:34,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6889d226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:13:34, skipping insertion in model container [2022-07-21 02:13:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:13:33" (2/3) ... [2022-07-21 02:13:34,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6889d226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:13:34, skipping insertion in model container [2022-07-21 02:13:34,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:13:34" (3/3) ... [2022-07-21 02:13:34,449 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2022-07-21 02:13:34,461 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:13:34,463 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-21 02:13:34,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:13:34,514 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@620dd339, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@188c3612 [2022-07-21 02:13:34,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 02:13:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 49 states have internal predecessors, (60), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 02:13:34,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 02:13:34,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:34,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:34,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:34,538 INFO L85 PathProgramCache]: Analyzing trace with hash -819579598, now seen corresponding path program 1 times [2022-07-21 02:13:34,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:13:34,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863812510] [2022-07-21 02:13:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:34,550 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:13:34,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:13:34,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:13:34,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 02:13:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:34,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 02:13:34,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:13:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 02:13:34,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:13:34,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:13:34,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863812510] [2022-07-21 02:13:34,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863812510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:34,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:34,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:13:34,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950895605] [2022-07-21 02:13:34,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:13:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 02:13:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:13:34,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:13:34,805 INFO L87 Difference]: Start difference. First operand has 63 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 49 states have internal predecessors, (60), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 02:13:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:34,845 INFO L93 Difference]: Finished difference Result 122 states and 159 transitions. [2022-07-21 02:13:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:13:34,848 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-07-21 02:13:34,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:34,860 INFO L225 Difference]: With dead ends: 122 [2022-07-21 02:13:34,861 INFO L226 Difference]: Without dead ends: 58 [2022-07-21 02:13:34,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:13:34,873 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:34,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:13:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-21 02:13:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-07-21 02:13:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 44 states have internal predecessors, (49), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-21 02:13:34,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-07-21 02:13:34,925 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 27 [2022-07-21 02:13:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:34,926 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-07-21 02:13:34,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 02:13:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-07-21 02:13:34,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 02:13:34,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:34,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:34,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 02:13:35,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:13:35,133 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1880588558, now seen corresponding path program 1 times [2022-07-21 02:13:35,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:13:35,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719562411] [2022-07-21 02:13:35,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:35,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:13:35,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:13:35,137 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:13:35,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 02:13:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:35,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 02:13:35,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:13:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 02:13:35,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:13:35,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:13:35,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719562411] [2022-07-21 02:13:35,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719562411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:35,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:35,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:13:35,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444139519] [2022-07-21 02:13:35,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:35,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 02:13:35,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 02:13:35,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 02:13:35,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:13:35,309 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:35,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:35,334 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2022-07-21 02:13:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:13:35,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-07-21 02:13:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:35,337 INFO L225 Difference]: With dead ends: 63 [2022-07-21 02:13:35,338 INFO L226 Difference]: Without dead ends: 61 [2022-07-21 02:13:35,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:13:35,339 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:35,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:13:35,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-07-21 02:13:35,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-07-21 02:13:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 46 states have internal predecessors, (51), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2022-07-21 02:13:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2022-07-21 02:13:35,349 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 27 [2022-07-21 02:13:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:35,349 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2022-07-21 02:13:35,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2022-07-21 02:13:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 02:13:35,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:35,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:35,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 02:13:35,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:13:35,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:35,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:35,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1829794903, now seen corresponding path program 1 times [2022-07-21 02:13:35,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:13:35,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788325019] [2022-07-21 02:13:35,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:35,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:13:35,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:13:35,555 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:13:35,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 02:13:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:35,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 02:13:35,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:13:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 02:13:35,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:13:35,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:13:35,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788325019] [2022-07-21 02:13:35,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788325019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:35,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:35,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:13:35,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980264475] [2022-07-21 02:13:35,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:35,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 02:13:35,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 02:13:35,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 02:13:35,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 02:13:35,953 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:36,311 INFO L93 Difference]: Finished difference Result 164 states and 201 transitions. [2022-07-21 02:13:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 02:13:36,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-07-21 02:13:36,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:36,313 INFO L225 Difference]: With dead ends: 164 [2022-07-21 02:13:36,314 INFO L226 Difference]: Without dead ends: 111 [2022-07-21 02:13:36,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-21 02:13:36,315 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 54 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:36,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 162 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 02:13:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-21 02:13:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2022-07-21 02:13:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 64 states have (on average 1.171875) internal successors, (75), 68 states have internal predecessors, (75), 14 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (20), 14 states have call predecessors, (20), 14 states have call successors, (20) [2022-07-21 02:13:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2022-07-21 02:13:36,343 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 27 [2022-07-21 02:13:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:36,343 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2022-07-21 02:13:36,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 02:13:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2022-07-21 02:13:36,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 02:13:36,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:36,346 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:36,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-21 02:13:36,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:13:36,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:36,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1772695523, now seen corresponding path program 1 times [2022-07-21 02:13:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:13:36,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037835832] [2022-07-21 02:13:36,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:36,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:13:36,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:13:36,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:13:36,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 02:13:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:36,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 02:13:36,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:13:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 02:13:36,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:13:36,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:13:36,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037835832] [2022-07-21 02:13:36,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037835832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:36,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:36,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 02:13:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903701237] [2022-07-21 02:13:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:36,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 02:13:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 02:13:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 02:13:36,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:13:36,709 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 02:13:36,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:36,734 INFO L93 Difference]: Finished difference Result 160 states and 193 transitions. [2022-07-21 02:13:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 02:13:36,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 66 [2022-07-21 02:13:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:36,736 INFO L225 Difference]: With dead ends: 160 [2022-07-21 02:13:36,736 INFO L226 Difference]: Without dead ends: 94 [2022-07-21 02:13:36,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 02:13:36,738 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:36,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:13:36,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-21 02:13:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-07-21 02:13:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 67 states have (on average 1.164179104477612) internal successors, (78), 70 states have internal predecessors, (78), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (21), 16 states have call predecessors, (21), 14 states have call successors, (21) [2022-07-21 02:13:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 113 transitions. [2022-07-21 02:13:36,748 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 113 transitions. Word has length 66 [2022-07-21 02:13:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:36,749 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 113 transitions. [2022-07-21 02:13:36,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 02:13:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 113 transitions. [2022-07-21 02:13:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 02:13:36,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:36,751 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:13:36,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 02:13:36,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:13:36,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash -644548811, now seen corresponding path program 1 times [2022-07-21 02:13:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:13:36,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926134137] [2022-07-21 02:13:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:36,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:13:36,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:13:36,971 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:13:36,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 02:13:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:37,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-21 02:13:37,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:13:37,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 02:13:37,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 02:13:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 02:13:37,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:13:37,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:13:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926134137] [2022-07-21 02:13:37,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926134137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:13:37,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:13:37,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 02:13:37,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108521497] [2022-07-21 02:13:37,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:13:37,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 02:13:37,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 02:13:37,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 02:13:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 02:13:37,583 INFO L87 Difference]: Start difference. First operand 94 states and 113 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-21 02:13:38,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:13:38,683 INFO L93 Difference]: Finished difference Result 214 states and 259 transitions. [2022-07-21 02:13:38,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 02:13:38,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 66 [2022-07-21 02:13:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:13:38,685 INFO L225 Difference]: With dead ends: 214 [2022-07-21 02:13:38,685 INFO L226 Difference]: Without dead ends: 116 [2022-07-21 02:13:38,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-07-21 02:13:38,686 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 153 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 02:13:38,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 190 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 02:13:38,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-21 02:13:38,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2022-07-21 02:13:38,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 76 states have internal predecessors, (82), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (21), 14 states have call predecessors, (21), 13 states have call successors, (21) [2022-07-21 02:13:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 116 transitions. [2022-07-21 02:13:38,699 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 116 transitions. Word has length 66 [2022-07-21 02:13:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:13:38,700 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 116 transitions. [2022-07-21 02:13:38,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-21 02:13:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 116 transitions. [2022-07-21 02:13:38,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 02:13:38,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:13:38,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-07-21 02:13:38,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 02:13:38,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:13:38,914 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:13:38,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:13:38,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1371790266, now seen corresponding path program 1 times [2022-07-21 02:13:38,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:13:38,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241701253] [2022-07-21 02:13:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:13:38,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:13:38,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:13:38,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 02:13:38,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 02:13:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:13:39,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 99 conjunts are in the unsatisfiable core [2022-07-21 02:13:39,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:13:39,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 02:13:39,420 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 02:13:39,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-21 02:13:39,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-07-21 02:13:40,086 INFO L356 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-07-21 02:13:40,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 281 [2022-07-21 02:13:40,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-21 02:13:40,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-21 02:13:40,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-21 02:13:41,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:13:41,938 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-21 02:13:41,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 194 treesize of output 149 [2022-07-21 02:13:41,986 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:13:41,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:13:42,002 INFO L356 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2022-07-21 02:13:42,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 185 treesize of output 124 [2022-07-21 02:13:42,023 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-21 02:13:42,032 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 02:13:42,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:13:42,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:13:42,107 INFO L356 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2022-07-21 02:13:42,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 334 treesize of output 271 [2022-07-21 02:13:42,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-21 02:13:42,150 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-21 02:13:42,161 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-21 02:13:54,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-21 02:13:55,056 INFO L356 Elim1Store]: treesize reduction 306, result has 13.8 percent of original size [2022-07-21 02:13:55,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:13:55,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241701253] [2022-07-21 02:13:55,058 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-21 02:13:55,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 02:13:55,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:13:55,259 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_7| input size 158 context size 158 output size 158 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 02:13:55,262 INFO L158 Benchmark]: Toolchain (without parser) took 22129.44ms. Allocated memory was 50.3MB in the beginning and 100.7MB in the end (delta: 50.3MB). Free memory was 24.2MB in the beginning and 33.2MB in the end (delta: -9.0MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2022-07-21 02:13:55,263 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 50.3MB. Free memory was 31.8MB in the beginning and 31.8MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:13:55,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.60ms. Allocated memory was 50.3MB in the beginning and 69.2MB in the end (delta: 18.9MB). Free memory was 24.0MB in the beginning and 37.4MB in the end (delta: -13.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-07-21 02:13:55,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.81ms. Allocated memory is still 69.2MB. Free memory was 37.4MB in the beginning and 50.6MB in the end (delta: -13.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2022-07-21 02:13:55,263 INFO L158 Benchmark]: Boogie Preprocessor took 60.54ms. Allocated memory is still 69.2MB. Free memory was 50.6MB in the beginning and 48.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:13:55,264 INFO L158 Benchmark]: RCFGBuilder took 522.13ms. Allocated memory is still 69.2MB. Free memory was 48.5MB in the beginning and 47.8MB in the end (delta: 738.8kB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2022-07-21 02:13:55,264 INFO L158 Benchmark]: TraceAbstraction took 20819.26ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 47.4MB in the beginning and 33.2MB in the end (delta: 14.1MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2022-07-21 02:13:55,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 50.3MB. Free memory was 31.8MB in the beginning and 31.8MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.60ms. Allocated memory was 50.3MB in the beginning and 69.2MB in the end (delta: 18.9MB). Free memory was 24.0MB in the beginning and 37.4MB in the end (delta: -13.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.81ms. Allocated memory is still 69.2MB. Free memory was 37.4MB in the beginning and 50.6MB in the end (delta: -13.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.54ms. Allocated memory is still 69.2MB. Free memory was 50.6MB in the beginning and 48.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 522.13ms. Allocated memory is still 69.2MB. Free memory was 48.5MB in the beginning and 47.8MB in the end (delta: 738.8kB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20819.26ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 47.4MB in the beginning and 33.2MB in the end (delta: 14.1MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_7| input size 158 context size 158 output size 158 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_7| input size 158 context size 158 output size 158: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-21 02:13:55,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_7| input size 158 context size 158 output size 158