./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 3dbbec33 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-?-3dbbec3 [2023-02-14 11:09:37,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 11:09:37,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 11:09:37,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 11:09:37,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 11:09:37,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 11:09:37,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 11:09:37,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 11:09:37,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 11:09:37,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 11:09:37,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 11:09:37,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 11:09:37,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 11:09:37,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 11:09:37,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 11:09:37,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 11:09:37,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 11:09:37,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 11:09:37,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 11:09:37,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 11:09:37,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 11:09:37,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 11:09:37,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 11:09:37,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 11:09:37,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 11:09:37,120 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 11:09:37,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 11:09:37,121 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 11:09:37,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 11:09:37,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 11:09:37,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 11:09:37,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 11:09:37,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 11:09:37,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 11:09:37,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 11:09:37,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 11:09:37,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 11:09:37,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 11:09:37,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 11:09:37,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 11:09:37,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 11:09:37,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 11:09:37,168 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 11:09:37,168 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 11:09:37,169 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 11:09:37,169 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 11:09:37,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 11:09:37,170 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 11:09:37,171 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 11:09:37,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 11:09:37,171 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 11:09:37,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 11:09:37,172 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 11:09:37,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 11:09:37,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 11:09:37,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 11:09:37,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 11:09:37,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 11:09:37,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 11:09:37,173 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 11:09:37,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 11:09:37,174 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 11:09:37,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 11:09:37,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 11:09:37,174 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 11:09:37,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 11:09:37,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:09:37,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 11:09:37,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 11:09:37,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 11:09:37,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 11:09:37,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 11:09:37,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 11:09:37,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 11:09:37,176 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 11:09:37,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 11:09:37,177 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 11:09:37,177 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2023-02-14 11:09:37,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 11:09:37,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 11:09:37,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 11:09:37,429 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 11:09:37,429 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 11:09:37,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-14 11:09:38,536 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 11:09:38,752 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 11:09:38,752 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-14 11:09:38,769 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02d6987d/eda2c951c7de41f8a5742328cc9f7fb1/FLAG730b2460c [2023-02-14 11:09:38,786 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02d6987d/eda2c951c7de41f8a5742328cc9f7fb1 [2023-02-14 11:09:38,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 11:09:38,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 11:09:38,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 11:09:38,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 11:09:38,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 11:09:38,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:09:38" (1/1) ... [2023-02-14 11:09:38,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2456202e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:38, skipping insertion in model container [2023-02-14 11:09:38,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:09:38" (1/1) ... [2023-02-14 11:09:38,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 11:09:38,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:09:39,163 WARN L237 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] [2023-02-14 11:09:39,170 WARN L237 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] [2023-02-14 11:09:39,173 WARN L237 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] [2023-02-14 11:09:39,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:09:39,190 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 11:09:39,249 WARN L237 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] [2023-02-14 11:09:39,258 WARN L237 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] [2023-02-14 11:09:39,259 WARN L237 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] [2023-02-14 11:09:39,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:09:39,293 INFO L208 MainTranslator]: Completed translation [2023-02-14 11:09:39,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39 WrapperNode [2023-02-14 11:09:39,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 11:09:39,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 11:09:39,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 11:09:39,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 11:09:39,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,360 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2023-02-14 11:09:39,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 11:09:39,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 11:09:39,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 11:09:39,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 11:09:39,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,408 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 11:09:39,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 11:09:39,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 11:09:39,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 11:09:39,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (1/1) ... [2023-02-14 11:09:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:09:39,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:09:39,450 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) [2023-02-14 11:09:39,474 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 [2023-02-14 11:09:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-14 11:09:39,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-14 11:09:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-14 11:09:39,514 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-14 11:09:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 11:09:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-14 11:09:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-14 11:09:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 11:09:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 11:09:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-14 11:09:39,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-14 11:09:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 11:09:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 11:09:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 11:09:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 11:09:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-14 11:09:39,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-14 11:09:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 11:09:39,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 11:09:39,636 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 11:09:39,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 11:09:39,899 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 11:09:39,906 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 11:09:39,906 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 11:09:39,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:09:39 BoogieIcfgContainer [2023-02-14 11:09:39,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 11:09:39,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 11:09:39,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 11:09:39,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 11:09:39,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:09:38" (1/3) ... [2023-02-14 11:09:39,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7775a4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:09:39, skipping insertion in model container [2023-02-14 11:09:39,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:09:39" (2/3) ... [2023-02-14 11:09:39,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7775a4c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:09:39, skipping insertion in model container [2023-02-14 11:09:39,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:09:39" (3/3) ... [2023-02-14 11:09:39,919 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2023-02-14 11:09:39,936 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 11:09:39,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-14 11:09:39,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 11:09:39,999 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30cf21db, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 11:09:39,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-14 11:09:40,003 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) [2023-02-14 11:09:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-14 11:09:40,011 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:09:40,011 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] [2023-02-14 11:09:40,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:09:40,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:09:40,016 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2023-02-14 11:09:40,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:09:40,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753705513] [2023-02-14 11:09:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:40,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:09:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 11:09:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-14 11:09:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 11:09:40,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:09:40,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753705513] [2023-02-14 11:09:40,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753705513] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:09:40,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:09:40,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 11:09:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270446176] [2023-02-14 11:09:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:09:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 11:09:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:09:40,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 11:09:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 11:09:40,279 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) [2023-02-14 11:09:40,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:09:40,398 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2023-02-14 11:09:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 11:09:40,401 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 [2023-02-14 11:09:40,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:09:40,408 INFO L225 Difference]: With dead ends: 147 [2023-02-14 11:09:40,408 INFO L226 Difference]: Without dead ends: 76 [2023-02-14 11:09:40,411 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 [2023-02-14 11:09:40,414 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 11:09:40,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 74 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 11:09:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-14 11:09:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2023-02-14 11:09:40,445 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) [2023-02-14 11:09:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-02-14 11:09:40,448 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2023-02-14 11:09:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:09:40,449 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-02-14 11:09:40,449 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) [2023-02-14 11:09:40,449 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-02-14 11:09:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-14 11:09:40,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:09:40,451 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] [2023-02-14 11:09:40,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 11:09:40,451 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:09:40,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:09:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2023-02-14 11:09:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:09:40,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126945154] [2023-02-14 11:09:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:09:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 11:09:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-14 11:09:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:40,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 11:09:40,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:09:40,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126945154] [2023-02-14 11:09:40,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126945154] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:09:40,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:09:40,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 11:09:40,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442043356] [2023-02-14 11:09:40,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:09:40,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 11:09:40,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:09:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 11:09:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 11:09:40,681 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) [2023-02-14 11:09:40,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:09:40,881 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2023-02-14 11:09:40,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 11:09:40,882 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 [2023-02-14 11:09:40,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:09:40,885 INFO L225 Difference]: With dead ends: 82 [2023-02-14 11:09:40,886 INFO L226 Difference]: Without dead ends: 80 [2023-02-14 11:09:40,887 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 [2023-02-14 11:09:40,888 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 11:09:40,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 141 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 11:09:40,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-14 11:09:40,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-02-14 11:09:40,910 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) [2023-02-14 11:09:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-02-14 11:09:40,915 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2023-02-14 11:09:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:09:40,916 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-02-14 11:09:40,916 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) [2023-02-14 11:09:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-02-14 11:09:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-14 11:09:40,917 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:09:40,917 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] [2023-02-14 11:09:40,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 11:09:40,918 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:09:40,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:09:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2023-02-14 11:09:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:09:40,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425622605] [2023-02-14 11:09:40,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:09:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 11:09:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-14 11:09:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 11:09:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:09:41,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425622605] [2023-02-14 11:09:41,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425622605] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:09:41,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:09:41,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 11:09:41,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757566182] [2023-02-14 11:09:41,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:09:41,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 11:09:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:09:41,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 11:09:41,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 11:09:41,324 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) [2023-02-14 11:09:41,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:09:41,810 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2023-02-14 11:09:41,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 11:09:41,811 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 [2023-02-14 11:09:41,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:09:41,813 INFO L225 Difference]: With dead ends: 206 [2023-02-14 11:09:41,813 INFO L226 Difference]: Without dead ends: 145 [2023-02-14 11:09:41,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-14 11:09:41,815 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 142 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 11:09:41,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 168 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 11:09:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-14 11:09:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2023-02-14 11:09:41,832 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) [2023-02-14 11:09:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-14 11:09:41,833 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2023-02-14 11:09:41,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:09:41,833 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-14 11:09:41,834 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) [2023-02-14 11:09:41,834 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-14 11:09:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-14 11:09:41,836 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:09:41,836 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] [2023-02-14 11:09:41,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 11:09:41,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:09:41,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:09:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2023-02-14 11:09:41,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:09:41,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117777512] [2023-02-14 11:09:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:41,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:09:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 11:09:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 11:09:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 11:09:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-14 11:09:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 11:09:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:41,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-14 11:09:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-14 11:09:42,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:09:42,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117777512] [2023-02-14 11:09:42,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117777512] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:09:42,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165763434] [2023-02-14 11:09:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:42,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:09:42,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:09:42,015 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) [2023-02-14 11:09:42,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 11:09:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:42,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 11:09:42,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:09:42,249 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-14 11:09:42,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:09:42,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165763434] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:09:42,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 11:09:42,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-14 11:09:42,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795252299] [2023-02-14 11:09:42,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:09:42,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 11:09:42,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:09:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 11:09:42,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-14 11:09:42,259 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) [2023-02-14 11:09:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:09:42,284 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2023-02-14 11:09:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 11:09:42,289 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 [2023-02-14 11:09:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:09:42,293 INFO L225 Difference]: With dead ends: 219 [2023-02-14 11:09:42,293 INFO L226 Difference]: Without dead ends: 126 [2023-02-14 11:09:42,298 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 [2023-02-14 11:09:42,301 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 [2023-02-14 11:09:42,302 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] [2023-02-14 11:09:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-14 11:09:42,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-14 11:09:42,327 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) [2023-02-14 11:09:42,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-02-14 11:09:42,328 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2023-02-14 11:09:42,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:09:42,329 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-02-14 11:09:42,329 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) [2023-02-14 11:09:42,329 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-02-14 11:09:42,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-14 11:09:42,331 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:09:42,331 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] [2023-02-14 11:09:42,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 11:09:42,538 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 [2023-02-14 11:09:42,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:09:42,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:09:42,539 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2023-02-14 11:09:42,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:09:42,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264217977] [2023-02-14 11:09:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:42,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:09:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 11:09:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:44,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 11:09:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:46,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 11:09:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:46,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 11:09:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-14 11:09:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-14 11:09:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 11:09:46,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:09:46,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264217977] [2023-02-14 11:09:46,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264217977] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:09:46,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725614606] [2023-02-14 11:09:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:46,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:09:46,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:09:46,667 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) [2023-02-14 11:09:46,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 11:09:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:46,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 198 conjunts are in the unsatisfiable core [2023-02-14 11:09:46,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:09:47,152 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 11:09:47,153 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:47,367 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-14 11:09:47,368 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:47,537 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:47,551 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:48,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:48,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:48,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:49,039 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-02-14 11:09:49,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 190 treesize of output 155 [2023-02-14 11:09:49,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:49,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:49,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 28 [2023-02-14 11:09:49,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:49,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:49,083 INFO L350 Elim1Store]: Elim1 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 94 treesize of output 80 [2023-02-14 11:09:49,102 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-14 11:09:49,103 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 20 [2023-02-14 11:09:49,126 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-02-14 11:09:49,126 INFO L350 Elim1Store]: Elim1 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 79 treesize of output 71 [2023-02-14 11:09:49,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:09:49,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 74 [2023-02-14 11:09:49,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:09:49,162 INFO L321 Elim1Store]: treesize reduction 8, result has 74.2 percent of original size [2023-02-14 11:09:49,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2023-02-14 11:09:49,170 INFO L350 Elim1Store]: Elim1 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 40 treesize of output 32 [2023-02-14 11:09:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-14 11:09:50,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:09:51,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725614606] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:09:51,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 11:09:51,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 60 [2023-02-14 11:09:51,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268783721] [2023-02-14 11:09:51,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 11:09:51,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-14 11:09:51,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:09:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-14 11:09:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4170, Unknown=10, NotChecked=0, Total=4422 [2023-02-14 11:09:51,823 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 60 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 41 states have internal predecessors, (79), 17 states have call successors, (18), 12 states have call predecessors, (18), 13 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-02-14 11:09:57,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:09:57,469 INFO L93 Difference]: Finished difference Result 266 states and 330 transitions. [2023-02-14 11:09:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-14 11:09:57,471 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 41 states have internal predecessors, (79), 17 states have call successors, (18), 12 states have call predecessors, (18), 13 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 63 [2023-02-14 11:09:57,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:09:57,474 INFO L225 Difference]: With dead ends: 266 [2023-02-14 11:09:57,474 INFO L226 Difference]: Without dead ends: 194 [2023-02-14 11:09:57,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=822, Invalid=9674, Unknown=10, NotChecked=0, Total=10506 [2023-02-14 11:09:57,479 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 817 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 4349 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 4349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:09:57,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1356 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 4349 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-02-14 11:09:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-02-14 11:09:57,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 150. [2023-02-14 11:09:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.201834862385321) internal successors, (131), 115 states have internal predecessors, (131), 21 states have call successors, (21), 11 states have call predecessors, (21), 17 states have return successors, (36), 23 states have call predecessors, (36), 21 states have call successors, (36) [2023-02-14 11:09:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2023-02-14 11:09:57,514 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 188 transitions. Word has length 63 [2023-02-14 11:09:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:09:57,515 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 188 transitions. [2023-02-14 11:09:57,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 41 states have internal predecessors, (79), 17 states have call successors, (18), 12 states have call predecessors, (18), 13 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-02-14 11:09:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 188 transitions. [2023-02-14 11:09:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-14 11:09:57,517 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:09:57,517 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:09:57,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 11:09:57,723 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 [2023-02-14 11:09:57,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:09:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:09:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2102607608, now seen corresponding path program 1 times [2023-02-14 11:09:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:09:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011921062] [2023-02-14 11:09:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:09:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 11:09:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:57,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 11:09:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:57,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 11:09:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:58,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-14 11:09:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 11:09:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:58,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:09:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-14 11:09:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-14 11:09:58,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:09:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011921062] [2023-02-14 11:09:58,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011921062] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:09:58,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425560096] [2023-02-14 11:09:58,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:58,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:09:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:09:58,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:09:58,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 11:09:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:09:58,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-14 11:09:58,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:09:58,279 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:58,282 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:58,393 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:58,396 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:09:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-14 11:09:58,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:09:58,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425560096] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:09:58,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 11:09:58,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-02-14 11:09:58,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052308024] [2023-02-14 11:09:58,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:09:58,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 11:09:58,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:09:58,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 11:09:58,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-14 11:09:58,596 INFO L87 Difference]: Start difference. First operand 150 states and 188 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-14 11:09:59,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:09:59,114 INFO L93 Difference]: Finished difference Result 312 states and 382 transitions. [2023-02-14 11:09:59,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 11:09:59,116 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 72 [2023-02-14 11:09:59,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:09:59,117 INFO L225 Difference]: With dead ends: 312 [2023-02-14 11:09:59,117 INFO L226 Difference]: Without dead ends: 156 [2023-02-14 11:09:59,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-02-14 11:09:59,119 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 217 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 11:09:59,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 212 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 11:09:59,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-14 11:09:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 134. [2023-02-14 11:09:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 104 states have internal predecessors, (116), 17 states have call successors, (17), 11 states have call predecessors, (17), 15 states have return successors, (26), 18 states have call predecessors, (26), 17 states have call successors, (26) [2023-02-14 11:09:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2023-02-14 11:09:59,144 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 72 [2023-02-14 11:09:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:09:59,146 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2023-02-14 11:09:59,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 4 states have call successors, (9), 4 states have call predecessors, (9), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-14 11:09:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2023-02-14 11:09:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-14 11:09:59,148 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:09:59,148 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:09:59,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 11:09:59,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:09:59,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:09:59,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:09:59,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1485354123, now seen corresponding path program 1 times [2023-02-14 11:09:59,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:09:59,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714584826] [2023-02-14 11:09:59,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:09:59,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:09:59,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:01,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 11:10:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:01,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:10:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:01,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-14 11:10:01,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 11:10:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 11:10:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-14 11:10:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:02,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-14 11:10:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-14 11:10:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-14 11:10:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:10:03,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714584826] [2023-02-14 11:10:03,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714584826] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:10:03,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818883693] [2023-02-14 11:10:03,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:10:03,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:10:03,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:10:03,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 11:10:03,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 11:10:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:03,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 177 conjunts are in the unsatisfiable core [2023-02-14 11:10:03,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:10:03,406 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 11:10:03,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 11:10:03,555 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 11:10:03,555 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:03,581 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:03,589 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:04,141 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-02-14 11:10:04,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 410 treesize of output 274 [2023-02-14 11:10:04,198 INFO L321 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2023-02-14 11:10:04,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 266 treesize of output 205 [2023-02-14 11:10:04,262 INFO L321 Elim1Store]: treesize reduction 122, result has 22.3 percent of original size [2023-02-14 11:10:04,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 179 treesize of output 207 [2023-02-14 11:10:04,276 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:04,289 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:04,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-02-14 11:10:04,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 14 [2023-02-14 11:10:04,533 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:04,597 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:04,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 102 [2023-02-14 11:10:04,745 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-14 11:10:04,745 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 31 treesize of output 3 [2023-02-14 11:10:04,818 INFO L350 Elim1Store]: Elim1 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 24 treesize of output 20 [2023-02-14 11:10:04,822 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2023-02-14 11:10:04,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 11:10:05,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:10:05,030 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) 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:122) 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:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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:337) 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:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2023-02-14 11:10:05,033 INFO L158 Benchmark]: Toolchain (without parser) took 26243.52ms. Allocated memory was 121.6MB in the beginning and 423.6MB in the end (delta: 302.0MB). Free memory was 77.1MB in the beginning and 375.3MB in the end (delta: -298.2MB). Peak memory consumption was 242.0MB. Max. memory is 16.1GB. [2023-02-14 11:10:05,033 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 96.5MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 11:10:05,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.68ms. Allocated memory is still 121.6MB. Free memory was 76.7MB in the beginning and 57.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-14 11:10:05,033 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.42ms. Allocated memory is still 121.6MB. Free memory was 57.4MB in the beginning and 55.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:10:05,034 INFO L158 Benchmark]: Boogie Preprocessor took 58.81ms. Allocated memory is still 121.6MB. Free memory was 55.3MB in the beginning and 53.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 11:10:05,034 INFO L158 Benchmark]: RCFGBuilder took 487.63ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 53.1MB in the beginning and 124.7MB in the end (delta: -71.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-14 11:10:05,034 INFO L158 Benchmark]: TraceAbstraction took 25122.48ms. Allocated memory was 167.8MB in the beginning and 423.6MB in the end (delta: 255.9MB). Free memory was 124.7MB in the beginning and 375.3MB in the end (delta: -250.6MB). Peak memory consumption was 241.9MB. Max. memory is 16.1GB. [2023-02-14 11:10:05,035 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 96.5MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 501.68ms. Allocated memory is still 121.6MB. Free memory was 76.7MB in the beginning and 57.4MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.42ms. Allocated memory is still 121.6MB. Free memory was 57.4MB in the beginning and 55.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.81ms. Allocated memory is still 121.6MB. Free memory was 55.3MB in the beginning and 53.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.63ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 53.1MB in the beginning and 124.7MB in the end (delta: -71.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 25122.48ms. Allocated memory was 167.8MB in the beginning and 423.6MB in the end (delta: 255.9MB). Free memory was 124.7MB in the beginning and 375.3MB in the end (delta: -250.6MB). Peak memory consumption was 241.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-02-14 11:10:05,052 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 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-?-3dbbec3 [2023-02-14 11:10:07,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 11:10:07,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 11:10:07,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 11:10:07,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 11:10:07,077 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 11:10:07,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 11:10:07,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 11:10:07,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 11:10:07,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 11:10:07,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 11:10:07,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 11:10:07,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 11:10:07,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 11:10:07,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 11:10:07,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 11:10:07,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 11:10:07,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 11:10:07,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 11:10:07,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 11:10:07,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 11:10:07,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 11:10:07,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 11:10:07,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 11:10:07,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 11:10:07,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 11:10:07,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 11:10:07,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 11:10:07,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 11:10:07,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 11:10:07,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 11:10:07,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 11:10:07,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 11:10:07,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 11:10:07,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 11:10:07,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 11:10:07,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 11:10:07,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 11:10:07,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 11:10:07,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 11:10:07,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 11:10:07,133 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-14 11:10:07,164 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 11:10:07,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 11:10:07,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 11:10:07,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 11:10:07,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 11:10:07,167 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 11:10:07,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 11:10:07,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 11:10:07,168 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 11:10:07,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 11:10:07,169 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 11:10:07,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 11:10:07,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 11:10:07,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 11:10:07,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 11:10:07,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 11:10:07,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 11:10:07,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-14 11:10:07,170 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-14 11:10:07,170 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 11:10:07,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 11:10:07,170 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 11:10:07,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 11:10:07,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 11:10:07,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 11:10:07,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 11:10:07,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:10:07,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 11:10:07,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 11:10:07,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 11:10:07,172 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-14 11:10:07,172 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-14 11:10:07,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 11:10:07,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 11:10:07,173 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 11:10:07,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 11:10:07,173 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-14 11:10:07,174 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 11:10:07,174 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cee8df08ffad3eb9e493a0be0076215dd3a59bce6d2370397b3bb712a7fad867 [2023-02-14 11:10:07,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 11:10:07,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 11:10:07,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 11:10:07,535 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 11:10:07,535 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 11:10:07,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-14 11:10:08,707 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 11:10:08,987 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 11:10:08,988 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex.i [2023-02-14 11:10:09,003 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bdd01135/4fe8385bc7ff4349acf5cb62388e5d01/FLAG595981cbc [2023-02-14 11:10:09,017 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bdd01135/4fe8385bc7ff4349acf5cb62388e5d01 [2023-02-14 11:10:09,019 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 11:10:09,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 11:10:09,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 11:10:09,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 11:10:09,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 11:10:09,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8a35ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09, skipping insertion in model container [2023-02-14 11:10:09,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 11:10:09,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:10:09,447 WARN L237 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] [2023-02-14 11:10:09,452 WARN L237 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] [2023-02-14 11:10:09,454 WARN L237 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] [2023-02-14 11:10:09,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:10:09,470 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-14 11:10:09,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:10:09,539 WARN L237 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] [2023-02-14 11:10:09,542 WARN L237 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] [2023-02-14 11:10:09,544 WARN L237 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] [2023-02-14 11:10:09,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:10:09,554 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 11:10:09,591 WARN L237 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] [2023-02-14 11:10:09,592 WARN L237 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] [2023-02-14 11:10:09,596 WARN L237 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] [2023-02-14 11:10:09,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:10:09,638 INFO L208 MainTranslator]: Completed translation [2023-02-14 11:10:09,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09 WrapperNode [2023-02-14 11:10:09,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 11:10:09,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 11:10:09,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 11:10:09,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 11:10:09,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,707 INFO L138 Inliner]: procedures = 140, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 125 [2023-02-14 11:10:09,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 11:10:09,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 11:10:09,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 11:10:09,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 11:10:09,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,753 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 11:10:09,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 11:10:09,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 11:10:09,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 11:10:09,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (1/1) ... [2023-02-14 11:10:09,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:10:09,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:10:09,796 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) [2023-02-14 11:10:09,798 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 [2023-02-14 11:10:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-14 11:10:09,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-14 11:10:09,822 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-14 11:10:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-14 11:10:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 11:10:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-14 11:10:09,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-14 11:10:09,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 11:10:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 11:10:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-14 11:10:09,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-14 11:10:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 11:10:09,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 11:10:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 11:10:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-14 11:10:09,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-14 11:10:09,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-14 11:10:09,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 11:10:09,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 11:10:09,952 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 11:10:09,970 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 11:10:10,274 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 11:10:10,280 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 11:10:10,280 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 11:10:10,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:10:10 BoogieIcfgContainer [2023-02-14 11:10:10,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 11:10:10,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 11:10:10,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 11:10:10,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 11:10:10,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:10:09" (1/3) ... [2023-02-14 11:10:10,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1393093a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:10:10, skipping insertion in model container [2023-02-14 11:10:10,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:10:09" (2/3) ... [2023-02-14 11:10:10,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1393093a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:10:10, skipping insertion in model container [2023-02-14 11:10:10,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:10:10" (3/3) ... [2023-02-14 11:10:10,288 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex.i [2023-02-14 11:10:10,300 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 11:10:10,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-14 11:10:10,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 11:10:10,342 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2eac94c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 11:10:10,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-14 11:10:10,345 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) [2023-02-14 11:10:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 11:10:10,351 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:10:10,352 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] [2023-02-14 11:10:10,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:10:10,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:10:10,356 INFO L85 PathProgramCache]: Analyzing trace with hash 673246785, now seen corresponding path program 1 times [2023-02-14 11:10:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 11:10:10,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752843271] [2023-02-14 11:10:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:10:10,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:10,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 11:10:10,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 11:10:10,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-14 11:10:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:10,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-14 11:10:10,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:10:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 11:10:10,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:10:10,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 11:10:10,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752843271] [2023-02-14 11:10:10,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752843271] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:10:10,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:10:10,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 11:10:10,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521868181] [2023-02-14 11:10:10,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:10:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 11:10:10,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 11:10:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 11:10:10,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 11:10:10,620 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) [2023-02-14 11:10:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:10:10,642 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2023-02-14 11:10:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 11:10:10,644 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 [2023-02-14 11:10:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:10:10,651 INFO L225 Difference]: With dead ends: 130 [2023-02-14 11:10:10,651 INFO L226 Difference]: Without dead ends: 62 [2023-02-14 11:10:10,654 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 [2023-02-14 11:10:10,657 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 [2023-02-14 11:10:10,658 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] [2023-02-14 11:10:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-14 11:10:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-14 11:10:10,688 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) [2023-02-14 11:10:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2023-02-14 11:10:10,691 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 27 [2023-02-14 11:10:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:10:10,691 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2023-02-14 11:10:10,691 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) [2023-02-14 11:10:10,692 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2023-02-14 11:10:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 11:10:10,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:10:10,693 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] [2023-02-14 11:10:10,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-14 11:10:10,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:10,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:10:10,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:10:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -387762175, now seen corresponding path program 1 times [2023-02-14 11:10:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 11:10:10,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820859737] [2023-02-14 11:10:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:10:10,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:10,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 11:10:10,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 11:10:10,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-14 11:10:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:11,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-14 11:10:11,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:10:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 11:10:11,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:10:11,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 11:10:11,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820859737] [2023-02-14 11:10:11,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820859737] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:10:11,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:10:11,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 11:10:11,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63184004] [2023-02-14 11:10:11,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:10:11,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 11:10:11,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 11:10:11,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 11:10:11,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 11:10:11,383 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) [2023-02-14 11:10:11,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:10:11,773 INFO L93 Difference]: Finished difference Result 170 states and 208 transitions. [2023-02-14 11:10:11,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 11:10:11,774 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 [2023-02-14 11:10:11,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:10:11,777 INFO L225 Difference]: With dead ends: 170 [2023-02-14 11:10:11,777 INFO L226 Difference]: Without dead ends: 116 [2023-02-14 11:10:11,778 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 [2023-02-14 11:10:11,779 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 59 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 11:10:11,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 184 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 11:10:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-14 11:10:11,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2023-02-14 11:10:11,812 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) [2023-02-14 11:10:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2023-02-14 11:10:11,819 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 27 [2023-02-14 11:10:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:10:11,820 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2023-02-14 11:10:11,821 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) [2023-02-14 11:10:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2023-02-14 11:10:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 11:10:11,822 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:10:11,822 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] [2023-02-14 11:10:11,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-14 11:10:12,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:12,033 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:10:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:10:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash -438555830, now seen corresponding path program 1 times [2023-02-14 11:10:12,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 11:10:12,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287594143] [2023-02-14 11:10:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:10:12,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:12,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 11:10:12,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 11:10:12,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-14 11:10:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:12,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 11:10:12,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:10:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-14 11:10:12,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:10:12,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 11:10:12,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287594143] [2023-02-14 11:10:12,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287594143] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:10:12,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:10:12,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 11:10:12,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463125597] [2023-02-14 11:10:12,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:10:12,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 11:10:12,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 11:10:12,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 11:10:12,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 11:10:12,128 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) [2023-02-14 11:10:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:10:12,156 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2023-02-14 11:10:12,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 11:10:12,156 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 [2023-02-14 11:10:12,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:10:12,162 INFO L225 Difference]: With dead ends: 108 [2023-02-14 11:10:12,163 INFO L226 Difference]: Without dead ends: 106 [2023-02-14 11:10:12,164 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 [2023-02-14 11:10:12,166 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 [2023-02-14 11:10:12,167 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] [2023-02-14 11:10:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-14 11:10:12,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-02-14 11:10:12,192 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) [2023-02-14 11:10:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2023-02-14 11:10:12,194 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 27 [2023-02-14 11:10:12,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:10:12,194 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2023-02-14 11:10:12,195 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) [2023-02-14 11:10:12,195 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2023-02-14 11:10:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 11:10:12,199 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:10:12,199 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] [2023-02-14 11:10:12,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-14 11:10:12,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:12,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:10:12,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:10:12,410 INFO L85 PathProgramCache]: Analyzing trace with hash -811626959, now seen corresponding path program 1 times [2023-02-14 11:10:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 11:10:12,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179071219] [2023-02-14 11:10:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:10:12,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:12,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 11:10:12,415 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 11:10:12,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-14 11:10:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:12,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-14 11:10:12,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:10:12,688 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:12,696 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-14 11:10:12,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:10:12,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 11:10:12,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179071219] [2023-02-14 11:10:12,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179071219] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:10:12,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:10:12,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-14 11:10:12,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265173399] [2023-02-14 11:10:12,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:10:12,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 11:10:12,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 11:10:12,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 11:10:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-14 11:10:12,903 INFO L87 Difference]: Start difference. First operand 104 states and 130 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) 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) [2023-02-14 11:10:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:10:14,457 INFO L93 Difference]: Finished difference Result 268 states and 338 transitions. [2023-02-14 11:10:14,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 11:10:14,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) 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 [2023-02-14 11:10:14,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:10:14,459 INFO L225 Difference]: With dead ends: 268 [2023-02-14 11:10:14,460 INFO L226 Difference]: Without dead ends: 162 [2023-02-14 11:10:14,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-02-14 11:10:14,461 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 167 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-14 11:10:14,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 309 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-14 11:10:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-14 11:10:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2023-02-14 11:10:14,475 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) [2023-02-14 11:10:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2023-02-14 11:10:14,476 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 67 [2023-02-14 11:10:14,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:10:14,476 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2023-02-14 11:10:14,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) 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) [2023-02-14 11:10:14,477 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2023-02-14 11:10:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 11:10:14,478 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:10:14,478 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] [2023-02-14 11:10:14,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-14 11:10:14,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:14,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:10:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:10:14,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1108503363, now seen corresponding path program 1 times [2023-02-14 11:10:14,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 11:10:14,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65959091] [2023-02-14 11:10:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:10:14,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:14,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 11:10:14,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 11:10:14,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-14 11:10:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:14,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 11:10:14,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:10:14,849 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-14 11:10:14,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 11:10:14,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 11:10:14,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65959091] [2023-02-14 11:10:14,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65959091] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:10:14,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:10:14,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 11:10:14,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133280723] [2023-02-14 11:10:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:10:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 11:10:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 11:10:14,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 11:10:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 11:10:14,853 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) [2023-02-14 11:10:14,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:10:14,883 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2023-02-14 11:10:14,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 11:10:14,883 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 [2023-02-14 11:10:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:10:14,884 INFO L225 Difference]: With dead ends: 196 [2023-02-14 11:10:14,884 INFO L226 Difference]: Without dead ends: 109 [2023-02-14 11:10:14,885 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 [2023-02-14 11:10:14,886 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 [2023-02-14 11:10:14,886 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] [2023-02-14 11:10:14,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-14 11:10:14,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-14 11:10:14,899 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) [2023-02-14 11:10:14,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-02-14 11:10:14,900 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 67 [2023-02-14 11:10:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:10:14,900 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-02-14 11:10:14,901 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) [2023-02-14 11:10:14,901 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-02-14 11:10:14,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-14 11:10:14,904 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:10:14,905 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] [2023-02-14 11:10:14,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-14 11:10:15,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:15,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 11:10:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:10:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1210243856, now seen corresponding path program 1 times [2023-02-14 11:10:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 11:10:15,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734572916] [2023-02-14 11:10:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:10:15,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 11:10:15,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 11:10:15,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 11:10:15,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-14 11:10:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:10:15,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 91 conjunts are in the unsatisfiable core [2023-02-14 11:10:15,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:10:15,479 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-14 11:10:15,480 INFO L350 Elim1Store]: Elim1 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 14 treesize of output 20 [2023-02-14 11:10:15,653 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-02-14 11:10:15,654 INFO L350 Elim1Store]: Elim1 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 20 treesize of output 22 [2023-02-14 11:10:15,734 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:16,511 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-14 11:10:16,512 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:16,550 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:16,570 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:16,592 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:17,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:10:17,253 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:10:17,264 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:10:17,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 44 [2023-02-14 11:10:17,287 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:17,293 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:17,305 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:10:17,311 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:10:17,331 INFO L321 Elim1Store]: treesize reduction 24, result has 25.0 percent of original size [2023-02-14 11:10:17,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 153 treesize of output 100 [2023-02-14 11:10:17,347 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:17,393 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:17,433 INFO L350 Elim1Store]: Elim1 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 [2023-02-14 11:10:18,809 INFO L350 Elim1Store]: Elim1 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2023-02-14 11:10:32,695 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:12:11,258 WARN L233 SmtUtils]: Spent 1.64m on a formula simplification. DAG size of input: 57 DAG size of output: 31 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-14 11:12:11,258 INFO L321 Elim1Store]: treesize reduction 104, result has 33.8 percent of original size [2023-02-14 11:12:11,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 10 new quantified variables, introduced 9 case distinctions, treesize of input 912 treesize of output 825 [2023-02-14 11:12:11,279 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:12:11,355 INFO L173 IndexEqualityManager]: detected equality via solver