./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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.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 cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:35:50,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:35:50,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:35:50,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:35:50,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:35:50,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:35:50,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:35:50,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:35:50,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:35:50,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:35:50,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:35:50,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:35:50,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:35:50,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:35:50,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:35:50,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:35:50,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:35:50,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:35:50,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:35:50,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:35:50,083 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:35:50,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:35:50,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:35:50,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:35:50,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:35:50,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:35:50,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:35:50,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:35:50,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:35:50,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:35:50,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:35:50,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:35:50,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:35:50,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:35:50,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:35:50,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:35:50,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:35:50,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:35:50,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:35:50,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:35:50,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:35:50,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:35:50,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 14:35:50,135 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:35:50,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:35:50,136 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:35:50,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:35:50,138 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:35:50,138 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:35:50,138 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:35:50,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:35:50,139 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:35:50,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:35:50,140 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:35:50,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 14:35:50,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:35:50,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:35:50,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:35:50,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:35:50,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:35:50,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:35:50,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:35:50,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:35:50,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:35:50,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:35:50,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:35:50,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:35:50,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:35:50,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:35:50,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:35:50,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:35:50,144 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 14:35:50,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 14:35:50,145 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:35:50,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:35:50,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:35:50,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2022-07-19 14:35:50,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:35:50,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:35:50,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:35:50,416 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:35:50,417 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:35:50,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2022-07-19 14:35:50,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b57846d/0b8e399cc966497d95ce8aa30d1ec5aa/FLAGd5858542e [2022-07-19 14:35:50,944 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:35:50,944 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2022-07-19 14:35:50,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b57846d/0b8e399cc966497d95ce8aa30d1ec5aa/FLAGd5858542e [2022-07-19 14:35:51,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40b57846d/0b8e399cc966497d95ce8aa30d1ec5aa [2022-07-19 14:35:51,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:35:51,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:35:51,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:35:51,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:35:51,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:35:51,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f54ef36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51, skipping insertion in model container [2022-07-19 14:35:51,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:35:51,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:35:51,802 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.i[25842,25855] [2022-07-19 14:35:51,805 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.i[25967,25980] [2022-07-19 14:35:51,806 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.i[26082,26095] [2022-07-19 14:35:51,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:35:51,826 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:35:51,870 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.i[25842,25855] [2022-07-19 14:35:51,871 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.i[25967,25980] [2022-07-19 14:35:51,871 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.i[26082,26095] [2022-07-19 14:35:51,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:35:51,898 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:35:51,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51 WrapperNode [2022-07-19 14:35:51,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:35:51,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:35:51,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:35:51,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:35:51,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,955 INFO L137 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2022-07-19 14:35:51,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:35:51,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:35:51,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:35:51,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:35:51,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:51,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:35:51,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:35:51,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:35:51,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:35:51,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (1/1) ... [2022-07-19 14:35:52,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:35:52,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:35:52,026 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) [2022-07-19 14:35:52,027 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 [2022-07-19 14:35:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-19 14:35:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-19 14:35:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 14:35:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 14:35:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 14:35:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 14:35:52,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 14:35:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:35:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 14:35:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-07-19 14:35:52,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-07-19 14:35:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 14:35:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 14:35:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 14:35:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 14:35:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-07-19 14:35:52,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-07-19 14:35:52,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:35:52,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:35:52,188 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:35:52,189 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:35:52,450 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:35:52,456 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:35:52,457 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 14:35:52,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:35:52 BoogieIcfgContainer [2022-07-19 14:35:52,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:35:52,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:35:52,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:35:52,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:35:52,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:35:51" (1/3) ... [2022-07-19 14:35:52,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb23313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:35:52, skipping insertion in model container [2022-07-19 14:35:52,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:35:51" (2/3) ... [2022-07-19 14:35:52,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb23313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:35:52, skipping insertion in model container [2022-07-19 14:35:52,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:35:52" (3/3) ... [2022-07-19 14:35:52,467 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2022-07-19 14:35:52,483 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:35:52,483 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-19 14:35:52,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:35:52,537 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@3af104c8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e867d29 [2022-07-19 14:35:52,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 14:35:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 14:35:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 14:35:52,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:35:52,549 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] [2022-07-19 14:35:52,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:35:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:35:52,553 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2022-07-19 14:35:52,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:35:52,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255665355] [2022-07-19 14:35:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:35:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:35:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:52,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 14:35:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 14:35:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 14:35:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:35:52,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255665355] [2022-07-19 14:35:52,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255665355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:35:52,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:35:52,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 14:35:52,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999295102] [2022-07-19 14:35:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:35:52,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 14:35:52,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:35:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 14:35:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:35:52,814 INFO L87 Difference]: Start difference. First operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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) [2022-07-19 14:35:52,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:35:52,942 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2022-07-19 14:35:52,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 14:35:52,945 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 [2022-07-19 14:35:52,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:35:52,954 INFO L225 Difference]: With dead ends: 147 [2022-07-19 14:35:52,954 INFO L226 Difference]: Without dead ends: 76 [2022-07-19 14:35:52,959 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 [2022-07-19 14:35:52,962 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:35:52,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 99 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 14:35:52,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-19 14:35:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2022-07-19 14:35:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 14:35:53,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2022-07-19 14:35:53,012 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2022-07-19 14:35:53,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:35:53,012 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2022-07-19 14:35:53,013 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) [2022-07-19 14:35:53,013 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2022-07-19 14:35:53,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 14:35:53,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:35:53,014 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] [2022-07-19 14:35:53,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 14:35:53,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:35:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:35:53,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2022-07-19 14:35:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:35:53,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738839741] [2022-07-19 14:35:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:35:53,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:35:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 14:35:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:53,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 14:35:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 14:35:53,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:35:53,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738839741] [2022-07-19 14:35:53,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738839741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:35:53,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:35:53,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 14:35:53,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794114] [2022-07-19 14:35:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:35:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 14:35:53,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:35:53,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 14:35:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:35:53,123 INFO L87 Difference]: Start difference. First operand 65 states and 75 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) [2022-07-19 14:35:53,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:35:53,263 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-07-19 14:35:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 14:35:53,264 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 [2022-07-19 14:35:53,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:35:53,268 INFO L225 Difference]: With dead ends: 82 [2022-07-19 14:35:53,268 INFO L226 Difference]: Without dead ends: 80 [2022-07-19 14:35:53,271 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 [2022-07-19 14:35:53,272 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 37 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:35:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 166 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 14:35:53,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-19 14:35:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2022-07-19 14:35:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-07-19 14:35:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2022-07-19 14:35:53,291 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2022-07-19 14:35:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:35:53,292 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2022-07-19 14:35:53,292 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) [2022-07-19 14:35:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2022-07-19 14:35:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 14:35:53,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:35:53,293 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] [2022-07-19 14:35:53,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 14:35:53,293 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:35:53,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:35:53,294 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2022-07-19 14:35:53,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:35:53,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838906764] [2022-07-19 14:35:53,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:35:53,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:35:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 14:35:53,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 14:35:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 14:35:53,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:35:53,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838906764] [2022-07-19 14:35:53,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838906764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:35:53,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:35:53,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 14:35:53,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349518718] [2022-07-19 14:35:53,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:35:53,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 14:35:53,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:35:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 14:35:53,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:35:53,536 INFO L87 Difference]: Start difference. First operand 69 states and 81 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) [2022-07-19 14:35:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:35:54,055 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2022-07-19 14:35:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 14:35:54,055 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 [2022-07-19 14:35:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:35:54,058 INFO L225 Difference]: With dead ends: 206 [2022-07-19 14:35:54,059 INFO L226 Difference]: Without dead ends: 145 [2022-07-19 14:35:54,061 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 [2022-07-19 14:35:54,063 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 136 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 14:35:54,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 202 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 14:35:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-19 14:35:54,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2022-07-19 14:35:54,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 18 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (29), 18 states have call predecessors, (29), 18 states have call successors, (29) [2022-07-19 14:35:54,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2022-07-19 14:35:54,082 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2022-07-19 14:35:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:35:54,082 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2022-07-19 14:35:54,083 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) [2022-07-19 14:35:54,083 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2022-07-19 14:35:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 14:35:54,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:35:54,088 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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, 1, 1] [2022-07-19 14:35:54,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 14:35:54,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:35:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:35:54,089 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2022-07-19 14:35:54,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:35:54,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251735243] [2022-07-19 14:35:54,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:35:54,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:35:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 14:35:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 14:35:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:35:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 14:35:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:35:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 14:35:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-19 14:35:54,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:35:54,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251735243] [2022-07-19 14:35:54,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251735243] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:35:54,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325262055] [2022-07-19 14:35:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:35:54,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:35:54,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:35:54,243 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) [2022-07-19 14:35:54,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 14:35:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:54,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 14:35:54,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:35:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 14:35:54,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:35:54,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325262055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:35:54,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 14:35:54,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-19 14:35:54,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41311724] [2022-07-19 14:35:54,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:35:54,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:35:54,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:35:54,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:35:54,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:35:54,460 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 14:35:54,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:35:54,502 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2022-07-19 14:35:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:35:54,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2022-07-19 14:35:54,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:35:54,504 INFO L225 Difference]: With dead ends: 219 [2022-07-19 14:35:54,504 INFO L226 Difference]: Without dead ends: 126 [2022-07-19 14:35:54,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:35:54,506 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:35:54,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:35:54,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-19 14:35:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-07-19 14:35:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 96 states have internal predecessors, (107), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (30), 20 states have call predecessors, (30), 18 states have call successors, (30) [2022-07-19 14:35:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2022-07-19 14:35:54,543 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2022-07-19 14:35:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:35:54,544 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2022-07-19 14:35:54,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 14:35:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2022-07-19 14:35:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 14:35:54,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:35:54,545 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] [2022-07-19 14:35:54,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 14:35:54,755 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 [2022-07-19 14:35:54,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:35:54,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:35:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2022-07-19 14:35:54,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:35:54,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142287852] [2022-07-19 14:35:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:35:54,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:35:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 14:35:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 14:35:55,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 14:35:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 14:35:55,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 14:35:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 14:35:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:55,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 14:35:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 14:35:56,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:35:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142287852] [2022-07-19 14:35:56,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142287852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:35:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338845828] [2022-07-19 14:35:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:35:56,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:35:56,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:35:56,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:35:56,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 14:35:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:35:56,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 199 conjunts are in the unsatisfiable core [2022-07-19 14:35:56,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:35:56,503 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 14:35:56,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 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 [2022-07-19 14:35:56,744 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-07-19 14:35:56,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 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 [2022-07-19 14:35:56,921 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 [2022-07-19 14:35:56,939 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 [2022-07-19 14:35:58,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:35:58,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:35:58,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:35:58,395 INFO L356 Elim1Store]: treesize reduction 168, result has 22.9 percent of original size [2022-07-19 14:35:58,398 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 14:35:58,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 14:35:58,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:35:58,599 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 75 context size 75 output size 75 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:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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) [2022-07-19 14:35:58,604 INFO L158 Benchmark]: Toolchain (without parser) took 7149.79ms. Allocated memory was 86.0MB in the beginning and 125.8MB in the end (delta: 39.8MB). Free memory was 50.2MB in the beginning and 51.2MB in the end (delta: -981.9kB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-07-19 14:35:58,604 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:35:58,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 443.65ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.0MB in the beginning and 71.5MB in the end (delta: -21.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 14:35:58,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.06ms. Allocated memory is still 104.9MB. Free memory was 71.5MB in the beginning and 69.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:35:58,605 INFO L158 Benchmark]: Boogie Preprocessor took 32.76ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 67.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:35:58,606 INFO L158 Benchmark]: RCFGBuilder took 469.19ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 49.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-07-19 14:35:58,606 INFO L158 Benchmark]: TraceAbstraction took 6143.01ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 49.5MB in the beginning and 51.2MB in the end (delta: -1.6MB). Peak memory consumption was 22.0MB. Max. memory is 16.1GB. [2022-07-19 14:35:58,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 86.0MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 443.65ms. Allocated memory was 86.0MB in the beginning and 104.9MB in the end (delta: 18.9MB). Free memory was 50.0MB in the beginning and 71.5MB in the end (delta: -21.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.06ms. Allocated memory is still 104.9MB. Free memory was 71.5MB in the beginning and 69.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.76ms. Allocated memory is still 104.9MB. Free memory was 69.0MB in the beginning and 67.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 469.19ms. Allocated memory is still 104.9MB. Free memory was 66.9MB in the beginning and 49.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6143.01ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 49.5MB in the beginning and 51.2MB in the end (delta: -1.6MB). Peak memory consumption was 22.0MB. 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 75 context size 75 output size 75 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_4| input size 75 context size 75 output size 75: 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. [2022-07-19 14:35:58,641 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.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 cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:36:00,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:36:00,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:36:00,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:36:00,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:36:00,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:36:00,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:36:00,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:36:00,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:36:00,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:36:00,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:36:00,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:36:00,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:36:00,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:36:00,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:36:00,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:36:00,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:36:00,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:36:00,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:36:00,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:36:00,666 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:36:00,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:36:00,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:36:00,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:36:00,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:36:00,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:36:00,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:36:00,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:36:00,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:36:00,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:36:00,687 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:36:00,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:36:00,688 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:36:00,689 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:36:00,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:36:00,690 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:36:00,690 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:36:00,691 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:36:00,691 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:36:00,691 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:36:00,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:36:00,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:36:00,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 14:36:00,733 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:36:00,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:36:00,734 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:36:00,734 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:36:00,735 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:36:00,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:36:00,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:36:00,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:36:00,736 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:36:00,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:36:00,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:36:00,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:36:00,737 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:36:00,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:36:00,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:36:00,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:36:00,738 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 14:36:00,738 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 14:36:00,738 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 14:36:00,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:36:00,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:36:00,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:36:00,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:36:00,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:36:00,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:36:00,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:36:00,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:36:00,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:36:00,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:36:00,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:36:00,740 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 14:36:00,740 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 14:36:00,740 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:36:00,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:36:00,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:36:00,741 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 14:36:00,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2022-07-19 14:36:01,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:36:01,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:36:01,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:36:01,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:36:01,068 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:36:01,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2022-07-19 14:36:01,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a040a390/b9399577720b48e1a42193969567030b/FLAG790de191a [2022-07-19 14:36:01,696 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:36:01,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2022-07-19 14:36:01,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a040a390/b9399577720b48e1a42193969567030b/FLAG790de191a [2022-07-19 14:36:02,150 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a040a390/b9399577720b48e1a42193969567030b [2022-07-19 14:36:02,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:36:02,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:36:02,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:36:02,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:36:02,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:36:02,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3b8d28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02, skipping insertion in model container [2022-07-19 14:36:02,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:36:02,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:36:02,554 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.i[25842,25855] [2022-07-19 14:36:02,559 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.i[25967,25980] [2022-07-19 14:36:02,562 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.i[26082,26095] [2022-07-19 14:36:02,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:36:02,577 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-19 14:36:02,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:36:02,634 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.i[25842,25855] [2022-07-19 14:36:02,636 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.i[25967,25980] [2022-07-19 14:36:02,638 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.i[26082,26095] [2022-07-19 14:36:02,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:36:02,645 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:36:02,697 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.i[25842,25855] [2022-07-19 14:36:02,698 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.i[25967,25980] [2022-07-19 14:36:02,698 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.i[26082,26095] [2022-07-19 14:36:02,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:36:02,736 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:36:02,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02 WrapperNode [2022-07-19 14:36:02,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:36:02,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:36:02,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:36:02,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:36:02,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,817 INFO L137 Inliner]: procedures = 140, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 125 [2022-07-19 14:36:02,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:36:02,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:36:02,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:36:02,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:36:02,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:36:02,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:36:02,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:36:02,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:36:02,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (1/1) ... [2022-07-19 14:36:02,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:36:02,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:36:02,908 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) [2022-07-19 14:36:02,935 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 [2022-07-19 14:36:02,951 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-07-19 14:36:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-07-19 14:36:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 14:36:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 14:36:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 14:36:02,952 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 14:36:02,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 14:36:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:36:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 14:36:02,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2022-07-19 14:36:02,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2022-07-19 14:36:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 14:36:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 14:36:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 14:36:02,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 14:36:02,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2022-07-19 14:36:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2022-07-19 14:36:02,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:36:02,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:36:03,081 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:36:03,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:36:03,404 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:36:03,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:36:03,410 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 14:36:03,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:36:03 BoogieIcfgContainer [2022-07-19 14:36:03,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:36:03,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:36:03,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:36:03,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:36:03,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:36:02" (1/3) ... [2022-07-19 14:36:03,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b2b829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:36:03, skipping insertion in model container [2022-07-19 14:36:03,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:36:02" (2/3) ... [2022-07-19 14:36:03,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b2b829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:36:03, skipping insertion in model container [2022-07-19 14:36:03,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:36:03" (3/3) ... [2022-07-19 14:36:03,419 INFO L111 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2022-07-19 14:36:03,431 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:36:03,431 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-19 14:36:03,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:36:03,482 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@37871e6c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e70ef96 [2022-07-19 14:36:03,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 14:36:03,487 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 47 states have (on average 1.297872340425532) internal successors, (61), 50 states have internal predecessors, (61), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 14:36:03,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 14:36:03,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:36:03,499 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] [2022-07-19 14:36:03,499 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:36:03,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:36:03,505 INFO L85 PathProgramCache]: Analyzing trace with hash 673246785, now seen corresponding path program 1 times [2022-07-19 14:36:03,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:36:03,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032089608] [2022-07-19 14:36:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:36:03,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:36:03,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:36:03,521 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) [2022-07-19 14:36:03,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 14:36:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:36:03,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 14:36:03,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:36:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 14:36:03,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:36:03,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:36:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032089608] [2022-07-19 14:36:03,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032089608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:36:03,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:36:03,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 14:36:03,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821564887] [2022-07-19 14:36:03,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:36:03,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 14:36:03,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:36:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 14:36:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 14:36:03,744 INFO L87 Difference]: Start difference. First operand has 67 states, 47 states have (on average 1.297872340425532) internal successors, (61), 50 states have internal predecessors, (61), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 14:36:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:36:03,791 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2022-07-19 14:36:03,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 14:36:03,793 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-07-19 14:36:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:36:03,800 INFO L225 Difference]: With dead ends: 130 [2022-07-19 14:36:03,800 INFO L226 Difference]: Without dead ends: 62 [2022-07-19 14:36:03,815 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 [2022-07-19 14:36:03,818 INFO L413 NwaCegarLoop]: 77 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, 77 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 [2022-07-19 14:36:03,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:36:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-19 14:36:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-07-19 14:36:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 45 states have internal predecessors, (50), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 14:36:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-07-19 14:36:03,856 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 27 [2022-07-19 14:36:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:36:03,856 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-07-19 14:36:03,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 14:36:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-07-19 14:36:03,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 14:36:03,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:36:03,859 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] [2022-07-19 14:36:03,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 14:36:04,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:36:04,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:36:04,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:36:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash -387762175, now seen corresponding path program 1 times [2022-07-19 14:36:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:36:04,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453232538] [2022-07-19 14:36:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:36:04,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:36:04,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:36:04,074 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) [2022-07-19 14:36:04,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 14:36:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:36:04,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 14:36:04,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:36:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 14:36:04,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:36:04,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:36:04,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453232538] [2022-07-19 14:36:04,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453232538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:36:04,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:36:04,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:36:04,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272145723] [2022-07-19 14:36:04,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:36:04,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 14:36:04,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:36:04,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 14:36:04,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:36:04,627 INFO L87 Difference]: Start difference. First operand 62 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) [2022-07-19 14:36:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:36:04,993 INFO L93 Difference]: Finished difference Result 170 states and 208 transitions. [2022-07-19 14:36:04,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 14:36:04,994 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 [2022-07-19 14:36:04,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:36:04,997 INFO L225 Difference]: With dead ends: 170 [2022-07-19 14:36:04,997 INFO L226 Difference]: Without dead ends: 116 [2022-07-19 14:36:04,998 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 [2022-07-19 14:36:04,999 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 63 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 14:36:05,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 184 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 14:36:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-19 14:36:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2022-07-19 14:36:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 74 states have internal predecessors, (85), 18 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2022-07-19 14:36:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2022-07-19 14:36:05,016 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 27 [2022-07-19 14:36:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:36:05,016 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2022-07-19 14:36:05,016 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) [2022-07-19 14:36:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2022-07-19 14:36:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 14:36:05,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:36:05,017 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] [2022-07-19 14:36:05,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-19 14:36:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:36:05,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:36:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:36:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash -438555830, now seen corresponding path program 1 times [2022-07-19 14:36:05,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:36:05,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259630330] [2022-07-19 14:36:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:36:05,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:36:05,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:36:05,233 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) [2022-07-19 14:36:05,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 14:36:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:36:05,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 14:36:05,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:36:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 14:36:05,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:36:05,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:36:05,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259630330] [2022-07-19 14:36:05,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259630330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:36:05,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:36:05,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:36:05,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575611519] [2022-07-19 14:36:05,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:36:05,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:36:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:36:05,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:36:05,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:36:05,328 INFO L87 Difference]: Start difference. First operand 101 states and 126 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) [2022-07-19 14:36:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:36:05,346 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2022-07-19 14:36:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:36:05,347 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 [2022-07-19 14:36:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:36:05,349 INFO L225 Difference]: With dead ends: 108 [2022-07-19 14:36:05,349 INFO L226 Difference]: Without dead ends: 106 [2022-07-19 14:36:05,349 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 [2022-07-19 14:36:05,350 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 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 [2022-07-19 14:36:05,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:36:05,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-07-19 14:36:05,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2022-07-19 14:36:05,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 76 states have internal predecessors, (86), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2022-07-19 14:36:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2022-07-19 14:36:05,363 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 27 [2022-07-19 14:36:05,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:36:05,363 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2022-07-19 14:36:05,363 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) [2022-07-19 14:36:05,364 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2022-07-19 14:36:05,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 14:36:05,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:36:05,366 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, 1] [2022-07-19 14:36:05,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 14:36:05,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:36:05,583 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:36:05,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:36:05,583 INFO L85 PathProgramCache]: Analyzing trace with hash -811626959, now seen corresponding path program 1 times [2022-07-19 14:36:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:36:05,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [296498134] [2022-07-19 14:36:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:36:05,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:36:05,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:36:05,586 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) [2022-07-19 14:36:05,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 14:36:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:36:05,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 14:36:05,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:36:05,899 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 [2022-07-19 14:36:05,903 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 [2022-07-19 14:36:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 14:36:06,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:36:06,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:36:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [296498134] [2022-07-19 14:36:06,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [296498134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:36:06,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:36:06,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 14:36:06,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828241838] [2022-07-19 14:36:06,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:36:06,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 14:36:06,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:36:06,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 14:36:06,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 14:36:06,154 INFO L87 Difference]: Start difference. First operand 104 states and 130 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, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-19 14:36:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:36:07,710 INFO L93 Difference]: Finished difference Result 268 states and 338 transitions. [2022-07-19 14:36:07,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 14:36:07,711 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, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 67 [2022-07-19 14:36:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:36:07,714 INFO L225 Difference]: With dead ends: 268 [2022-07-19 14:36:07,714 INFO L226 Difference]: Without dead ends: 162 [2022-07-19 14:36:07,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-07-19 14:36:07,716 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 241 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 14:36:07,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 312 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 14:36:07,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-19 14:36:07,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2022-07-19 14:36:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 19 states have call successors, (19), 10 states have call predecessors, (19), 14 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2022-07-19 14:36:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2022-07-19 14:36:07,753 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 67 [2022-07-19 14:36:07,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:36:07,754 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2022-07-19 14:36:07,754 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, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-19 14:36:07,755 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2022-07-19 14:36:07,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 14:36:07,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:36:07,758 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, 1] [2022-07-19 14:36:07,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 14:36:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:36:07,971 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:36:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:36:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1108503363, now seen corresponding path program 1 times [2022-07-19 14:36:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:36:07,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223796754] [2022-07-19 14:36:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:36:07,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:36:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:36:07,974 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) [2022-07-19 14:36:07,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 14:36:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:36:08,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 14:36:08,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:36:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-19 14:36:08,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:36:08,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:36:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223796754] [2022-07-19 14:36:08,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223796754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:36:08,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:36:08,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:36:08,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568245753] [2022-07-19 14:36:08,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:36:08,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:36:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:36:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:36:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:36:08,111 INFO L87 Difference]: Start difference. First operand 122 states and 153 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 14:36:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:36:08,129 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2022-07-19 14:36:08,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:36:08,130 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2022-07-19 14:36:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:36:08,132 INFO L225 Difference]: With dead ends: 196 [2022-07-19 14:36:08,132 INFO L226 Difference]: Without dead ends: 109 [2022-07-19 14:36:08,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:36:08,133 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 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 [2022-07-19 14:36:08,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:36:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-19 14:36:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2022-07-19 14:36:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 73 states have (on average 1.1369863013698631) internal successors, (83), 77 states have internal predecessors, (83), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2022-07-19 14:36:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2022-07-19 14:36:08,144 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 67 [2022-07-19 14:36:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:36:08,144 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2022-07-19 14:36:08,144 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, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 14:36:08,145 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2022-07-19 14:36:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 14:36:08,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:36:08,146 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] [2022-07-19 14:36:08,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-19 14:36:08,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:36:08,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:36:08,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:36:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1210243856, now seen corresponding path program 1 times [2022-07-19 14:36:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:36:08,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100732552] [2022-07-19 14:36:08,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:36:08,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:36:08,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:36:08,360 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) [2022-07-19 14:36:08,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 14:36:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:36:08,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 91 conjunts are in the unsatisfiable core [2022-07-19 14:36:08,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:36:08,781 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-19 14:36:08,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-19 14:36:08,972 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-19 14:36:08,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 20 [2022-07-19 14:36:09,057 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 [2022-07-19 14:36:09,790 INFO L356 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-07-19 14:36:09,791 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 92 treesize of output 229 [2022-07-19 14:36:09,825 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 [2022-07-19 14:36:09,849 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 [2022-07-19 14:36:09,869 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 [2022-07-19 14:36:11,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:36:11,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:36:11,233 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-19 14:36:11,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 105 treesize of output 64 [2022-07-19 14:36:11,243 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 [2022-07-19 14:36:11,306 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 [2022-07-19 14:36:11,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:36:11,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 11 [2022-07-19 14:36:11,416 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 [2022-07-19 14:36:11,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:36:11,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 48 treesize of output 11 [2022-07-19 14:36:11,470 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 [2022-07-19 14:36:11,605 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 [2022-07-19 14:36:11,678 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 [2022-07-19 14:36:12,616 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 [2022-07-19 14:36:13,138 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 [2022-07-19 14:36:13,896 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 [2022-07-19 14:36:14,579 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 [2022-07-19 14:36:15,327 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 [2022-07-19 14:36:16,630 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 [2022-07-19 14:36:17,273 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 [2022-07-19 14:36:17,873 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 [2022-07-19 14:36:18,400 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 [2022-07-19 14:36:19,114 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 [2022-07-19 14:36:19,794 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 [2022-07-19 14:36:20,506 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 [2022-07-19 14:36:21,165 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 [2022-07-19 14:36:21,759 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 [2022-07-19 14:36:22,375 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 [2022-07-19 14:36:22,969 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 [2022-07-19 14:36:23,501 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 [2022-07-19 14:36:24,068 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 [2022-07-19 14:36:24,715 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 [2022-07-19 14:36:25,395 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 [2022-07-19 14:36:25,910 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 [2022-07-19 14:36:26,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:36:35,096 WARN L233 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 66 DAG size of output: 39 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-19 14:36:35,097 INFO L356 Elim1Store]: treesize reduction 133, result has 37.3 percent of original size [2022-07-19 14:36:35,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:36:35,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100732552] [2022-07-19 14:36:35,098 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-19 14:36:35,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-19 14:36:35,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:36:35,299 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 175 context size 175 output size 175 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:650) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:611) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:529) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:269) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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) [2022-07-19 14:36:35,304 INFO L158 Benchmark]: Toolchain (without parser) took 33150.76ms. Allocated memory was 56.6MB in the beginning and 121.6MB in the end (delta: 65.0MB). Free memory was 33.7MB in the beginning and 96.9MB in the end (delta: -63.2MB). Peak memory consumption was 68.3MB. Max. memory is 16.1GB. [2022-07-19 14:36:35,304 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:36:35,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 582.98ms. Allocated memory is still 56.6MB. Free memory was 33.6MB in the beginning and 24.9MB in the end (delta: 8.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 14:36:35,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.05ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 24.9MB in the beginning and 50.7MB in the end (delta: -25.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-19 14:36:35,305 INFO L158 Benchmark]: Boogie Preprocessor took 53.39ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 48.6MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:36:35,305 INFO L158 Benchmark]: RCFGBuilder took 538.35ms. Allocated memory is still 69.2MB. Free memory was 48.3MB in the beginning and 47.8MB in the end (delta: 541.7kB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2022-07-19 14:36:35,305 INFO L158 Benchmark]: TraceAbstraction took 31889.61ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 47.4MB in the beginning and 96.9MB in the end (delta: -49.5MB). Peak memory consumption was 70.1MB. Max. memory is 16.1GB. [2022-07-19 14:36:35,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 582.98ms. Allocated memory is still 56.6MB. Free memory was 33.6MB in the beginning and 24.9MB in the end (delta: 8.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.05ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 24.9MB in the beginning and 50.7MB in the end (delta: -25.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.39ms. Allocated memory is still 69.2MB. Free memory was 50.7MB in the beginning and 48.6MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 538.35ms. Allocated memory is still 69.2MB. Free memory was 48.3MB in the beginning and 47.8MB in the end (delta: 541.7kB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 31889.61ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 47.4MB in the beginning and 96.9MB in the end (delta: -49.5MB). Peak memory consumption was 70.1MB. 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 175 context size 175 output size 175 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_BEFORE_CALL_7| input size 175 context size 175 output size 175: 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. [2022-07-19 14:36:35,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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 175 context size 175 output size 175