./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_double_unlock.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 d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 23:35:32,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 23:35:32,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 23:35:32,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 23:35:32,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 23:35:32,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 23:35:32,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 23:35:32,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 23:35:32,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 23:35:32,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 23:35:32,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 23:35:32,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 23:35:32,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 23:35:32,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 23:35:32,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 23:35:32,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 23:35:32,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 23:35:32,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 23:35:32,144 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 23:35:32,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 23:35:32,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 23:35:32,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 23:35:32,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 23:35:32,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 23:35:32,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 23:35:32,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 23:35:32,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 23:35:32,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 23:35:32,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 23:35:32,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 23:35:32,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 23:35:32,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 23:35:32,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 23:35:32,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 23:35:32,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 23:35:32,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 23:35:32,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 23:35:32,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 23:35:32,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 23:35:32,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 23:35:32,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 23:35:32,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-13 23:35:32,193 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 23:35:32,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 23:35:32,194 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 23:35:32,194 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 23:35:32,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 23:35:32,195 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 23:35:32,195 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 23:35:32,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 23:35:32,196 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 23:35:32,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 23:35:32,196 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 23:35:32,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-13 23:35:32,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 23:35:32,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 23:35:32,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 23:35:32,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 23:35:32,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 23:35:32,197 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 23:35:32,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 23:35:32,197 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 23:35:32,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 23:35:32,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 23:35:32,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 23:35:32,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 23:35:32,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:35:32,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 23:35:32,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 23:35:32,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 23:35:32,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 23:35:32,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-13 23:35:32,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 23:35:32,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 23:35:32,200 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 23:35:32,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 23:35:32,200 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 23:35:32,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 [2023-02-13 23:35:32,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 23:35:32,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 23:35:32,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 23:35:32,436 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 23:35:32,436 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 23:35:32,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2023-02-13 23:35:33,438 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 23:35:33,673 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 23:35:33,673 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2023-02-13 23:35:33,686 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2026f838f/6182c953ee9b4fa3a959804f685c92c9/FLAG9610c17b2 [2023-02-13 23:35:33,697 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2026f838f/6182c953ee9b4fa3a959804f685c92c9 [2023-02-13 23:35:33,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 23:35:33,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 23:35:33,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 23:35:33,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 23:35:33,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 23:35:33,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:35:33" (1/1) ... [2023-02-13 23:35:33,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a825b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:33, skipping insertion in model container [2023-02-13 23:35:33,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:35:33" (1/1) ... [2023-02-13 23:35:33,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 23:35:33,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 23:35:33,969 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_double_unlock.i[25842,25855] [2023-02-13 23:35:33,974 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_double_unlock.i[25967,25980] [2023-02-13 23:35:33,976 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_double_unlock.i[26082,26095] [2023-02-13 23:35:33,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:35:33,986 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 23:35:34,031 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_double_unlock.i[25842,25855] [2023-02-13 23:35:34,031 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_double_unlock.i[25967,25980] [2023-02-13 23:35:34,032 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_double_unlock.i[26082,26095] [2023-02-13 23:35:34,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:35:34,056 INFO L208 MainTranslator]: Completed translation [2023-02-13 23:35:34,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34 WrapperNode [2023-02-13 23:35:34,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 23:35:34,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 23:35:34,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 23:35:34,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 23:35:34,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,097 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 129 [2023-02-13 23:35:34,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 23:35:34,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 23:35:34,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 23:35:34,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 23:35:34,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,120 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 23:35:34,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 23:35:34,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 23:35:34,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 23:35:34,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (1/1) ... [2023-02-13 23:35:34,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:35:34,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:35:34,159 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) [2023-02-13 23:35:34,176 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 [2023-02-13 23:35:34,187 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-13 23:35:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-13 23:35:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-13 23:35:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-13 23:35:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-13 23:35:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-13 23:35:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-13 23:35:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 23:35:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-13 23:35:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-13 23:35:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-13 23:35:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-13 23:35:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-13 23:35:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-13 23:35:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-13 23:35:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-13 23:35:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-13 23:35:34,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 23:35:34,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 23:35:34,326 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 23:35:34,327 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 23:35:34,539 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 23:35:34,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 23:35:34,544 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-13 23:35:34,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:35:34 BoogieIcfgContainer [2023-02-13 23:35:34,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 23:35:34,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 23:35:34,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 23:35:34,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 23:35:34,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 11:35:33" (1/3) ... [2023-02-13 23:35:34,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7446f6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:35:34, skipping insertion in model container [2023-02-13 23:35:34,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:34" (2/3) ... [2023-02-13 23:35:34,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7446f6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:35:34, skipping insertion in model container [2023-02-13 23:35:34,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:35:34" (3/3) ... [2023-02-13 23:35:34,551 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2023-02-13 23:35:34,563 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 23:35:34,564 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-13 23:35:34,600 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 23:35:34,604 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;@7681314d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 23:35:34,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-13 23:35:34,607 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) [2023-02-13 23:35:34,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-13 23:35:34,612 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:34,613 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] [2023-02-13 23:35:34,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:34,616 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2023-02-13 23:35:34,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:35:34,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727857509] [2023-02-13 23:35:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:35:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-13 23:35:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-13 23:35:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-13 23:35:34,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:35:34,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727857509] [2023-02-13 23:35:34,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727857509] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:35:34,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:35:34,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-13 23:35:34,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219038814] [2023-02-13 23:35:34,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:35:34,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-13 23:35:34,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:35:34,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 23:35:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 23:35:34,961 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) [2023-02-13 23:35:35,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:35:35,105 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2023-02-13 23:35:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 23:35:35,108 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 [2023-02-13 23:35:35,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:35:35,114 INFO L225 Difference]: With dead ends: 147 [2023-02-13 23:35:35,115 INFO L226 Difference]: Without dead ends: 76 [2023-02-13 23:35:35,117 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 [2023-02-13 23:35:35,121 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 [2023-02-13 23:35:35,122 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] [2023-02-13 23:35:35,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-13 23:35:35,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2023-02-13 23:35:35,152 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) [2023-02-13 23:35:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2023-02-13 23:35:35,155 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2023-02-13 23:35:35,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:35:35,156 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2023-02-13 23:35:35,156 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) [2023-02-13 23:35:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2023-02-13 23:35:35,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-13 23:35:35,157 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:35,157 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] [2023-02-13 23:35:35,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-13 23:35:35,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:35,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2023-02-13 23:35:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:35:35,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733962337] [2023-02-13 23:35:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:35,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:35:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-13 23:35:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-13 23:35:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-13 23:35:35,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:35:35,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733962337] [2023-02-13 23:35:35,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733962337] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:35:35,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:35:35,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-13 23:35:35,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806849624] [2023-02-13 23:35:35,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:35:35,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-13 23:35:35,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:35:35,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-13 23:35:35,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-13 23:35:35,350 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) [2023-02-13 23:35:35,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:35:35,500 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2023-02-13 23:35:35,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-13 23:35:35,501 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 [2023-02-13 23:35:35,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:35:35,504 INFO L225 Difference]: With dead ends: 82 [2023-02-13 23:35:35,504 INFO L226 Difference]: Without dead ends: 80 [2023-02-13 23:35:35,505 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 [2023-02-13 23:35:35,506 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 [2023-02-13 23:35:35,507 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] [2023-02-13 23:35:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-13 23:35:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-02-13 23:35:35,525 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) [2023-02-13 23:35:35,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2023-02-13 23:35:35,529 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2023-02-13 23:35:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:35:35,530 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2023-02-13 23:35:35,530 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) [2023-02-13 23:35:35,530 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2023-02-13 23:35:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-13 23:35:35,531 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:35,531 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] [2023-02-13 23:35:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-13 23:35:35,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2023-02-13 23:35:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:35:35,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102161978] [2023-02-13 23:35:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:35:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-13 23:35:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-13 23:35:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:35,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-13 23:35:35,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:35:35,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102161978] [2023-02-13 23:35:35,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102161978] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:35:35,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:35:35,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-13 23:35:35,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903429481] [2023-02-13 23:35:35,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:35:35,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-13 23:35:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:35:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-13 23:35:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-13 23:35:35,825 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) [2023-02-13 23:35:36,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:35:36,185 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2023-02-13 23:35:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-13 23:35:36,186 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 [2023-02-13 23:35:36,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:35:36,191 INFO L225 Difference]: With dead ends: 206 [2023-02-13 23:35:36,191 INFO L226 Difference]: Without dead ends: 145 [2023-02-13 23:35:36,194 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 [2023-02-13 23:35:36,197 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 142 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-13 23:35:36,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 168 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-13 23:35:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-13 23:35:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2023-02-13 23:35:36,217 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) [2023-02-13 23:35:36,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2023-02-13 23:35:36,218 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2023-02-13 23:35:36,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:35:36,219 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2023-02-13 23:35:36,219 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) [2023-02-13 23:35:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2023-02-13 23:35:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-13 23:35:36,222 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:36,222 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] [2023-02-13 23:35:36,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-13 23:35:36,223 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:36,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:36,223 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2023-02-13 23:35:36,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:35:36,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357481770] [2023-02-13 23:35:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:36,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:35:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-13 23:35:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-13 23:35:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-13 23:35:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-13 23:35:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-13 23:35:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-13 23:35:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,349 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-13 23:35:36,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:35:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357481770] [2023-02-13 23:35:36,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357481770] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:35:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408069034] [2023-02-13 23:35:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:36,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:35:36,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:35:36,353 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) [2023-02-13 23:35:36,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-13 23:35:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:36,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-13 23:35:36,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:35:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-13 23:35:36,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:35:36,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408069034] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:35:36,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-13 23:35:36,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-13 23:35:36,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459061614] [2023-02-13 23:35:36,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:35:36,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-13 23:35:36,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:35:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 23:35:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-13 23:35:36,547 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) [2023-02-13 23:35:36,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:35:36,564 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2023-02-13 23:35:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 23:35:36,567 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 [2023-02-13 23:35:36,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:35:36,568 INFO L225 Difference]: With dead ends: 219 [2023-02-13 23:35:36,568 INFO L226 Difference]: Without dead ends: 126 [2023-02-13 23:35:36,569 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 [2023-02-13 23:35:36,570 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 [2023-02-13 23:35:36,570 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] [2023-02-13 23:35:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-02-13 23:35:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2023-02-13 23:35:36,580 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) [2023-02-13 23:35:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2023-02-13 23:35:36,581 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2023-02-13 23:35:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:35:36,582 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2023-02-13 23:35:36,582 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) [2023-02-13 23:35:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2023-02-13 23:35:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-13 23:35:36,583 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:36,583 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] [2023-02-13 23:35:36,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-13 23:35:36,788 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 [2023-02-13 23:35:36,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:36,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2023-02-13 23:35:36,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:35:36,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425710948] [2023-02-13 23:35:36,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:36,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:35:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-13 23:35:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:38,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-13 23:35:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-13 23:35:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-13 23:35:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-13 23:35:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:39,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-13 23:35:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:39,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-13 23:35:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:35:39,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425710948] [2023-02-13 23:35:39,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425710948] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:35:39,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439705972] [2023-02-13 23:35:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:39,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:35:39,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:35:39,750 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) [2023-02-13 23:35:39,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-13 23:35:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:39,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 198 conjunts are in the unsatisfiable core [2023-02-13 23:35:39,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:35:40,160 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-13 23:35:40,160 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 [2023-02-13 23:35:40,346 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-13 23:35:40,346 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 [2023-02-13 23:35:40,483 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 [2023-02-13 23:35:40,494 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 [2023-02-13 23:35:41,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,690 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-02-13 23:35:41,691 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 [2023-02-13 23:35:41,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,732 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 [2023-02-13 23:35:41,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,742 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 [2023-02-13 23:35:41,756 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-13 23:35:41,756 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 [2023-02-13 23:35:41,771 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-02-13 23:35:41,771 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 [2023-02-13 23:35:41,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-13 23:35:41,780 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 [2023-02-13 23:35:41,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:35:41,822 INFO L321 Elim1Store]: treesize reduction 8, result has 74.2 percent of original size [2023-02-13 23:35:41,822 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 [2023-02-13 23:35:41,828 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 [2023-02-13 23:35:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-13 23:35:42,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 23:35:43,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439705972] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:35:43,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-13 23:35:43,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 29] total 60 [2023-02-13 23:35:43,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690971689] [2023-02-13 23:35:43,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-13 23:35:43,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-13 23:35:43,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:35:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-13 23:35:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4170, Unknown=10, NotChecked=0, Total=4422 [2023-02-13 23:35:43,788 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) [2023-02-13 23:35:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:35:48,711 INFO L93 Difference]: Finished difference Result 266 states and 330 transitions. [2023-02-13 23:35:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-13 23:35:48,712 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 [2023-02-13 23:35:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:35:48,713 INFO L225 Difference]: With dead ends: 266 [2023-02-13 23:35:48,713 INFO L226 Difference]: Without dead ends: 194 [2023-02-13 23:35:48,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=822, Invalid=9674, Unknown=10, NotChecked=0, Total=10506 [2023-02-13 23:35:48,716 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 817 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 4347 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 4620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 4347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-13 23:35:48,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1358 Invalid, 4620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 4347 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-13 23:35:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-02-13 23:35:48,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 150. [2023-02-13 23:35:48,735 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) [2023-02-13 23:35:48,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2023-02-13 23:35:48,736 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 188 transitions. Word has length 63 [2023-02-13 23:35:48,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:35:48,737 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 188 transitions. [2023-02-13 23:35:48,737 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) [2023-02-13 23:35:48,737 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 188 transitions. [2023-02-13 23:35:48,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-13 23:35:48,742 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:48,744 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] [2023-02-13 23:35:48,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-13 23:35:48,950 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 [2023-02-13 23:35:48,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2102607608, now seen corresponding path program 1 times [2023-02-13 23:35:48,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:35:48,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169594311] [2023-02-13 23:35:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:48,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:35:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-13 23:35:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-13 23:35:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-13 23:35:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-13 23:35:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-13 23:35:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-02-13 23:35:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-13 23:35:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:35:49,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169594311] [2023-02-13 23:35:49,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169594311] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:35:49,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84980463] [2023-02-13 23:35:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:49,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:35:49,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:35:49,167 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) [2023-02-13 23:35:49,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-13 23:35:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:49,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-13 23:35:49,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:35:49,383 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 [2023-02-13 23:35:49,385 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 [2023-02-13 23:35:49,500 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 [2023-02-13 23:35:49,503 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 [2023-02-13 23:35:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-13 23:35:49,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:35:49,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84980463] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:35:49,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-13 23:35:49,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-02-13 23:35:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198132855] [2023-02-13 23:35:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:35:49,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-13 23:35:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 23:35:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-13 23:35:49,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-13 23:35:49,696 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) [2023-02-13 23:35:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:35:50,092 INFO L93 Difference]: Finished difference Result 312 states and 382 transitions. [2023-02-13 23:35:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-13 23:35:50,094 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 [2023-02-13 23:35:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:35:50,095 INFO L225 Difference]: With dead ends: 312 [2023-02-13 23:35:50,095 INFO L226 Difference]: Without dead ends: 156 [2023-02-13 23:35:50,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-02-13 23:35:50,096 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-13 23:35:50,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 212 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-13 23:35:50,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-13 23:35:50,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 134. [2023-02-13 23:35:50,107 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) [2023-02-13 23:35:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2023-02-13 23:35:50,108 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 72 [2023-02-13 23:35:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:35:50,108 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2023-02-13 23:35:50,109 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) [2023-02-13 23:35:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2023-02-13 23:35:50,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-13 23:35:50,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:50,109 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] [2023-02-13 23:35:50,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-13 23:35:50,315 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 [2023-02-13 23:35:50,315 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:50,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:50,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1485354123, now seen corresponding path program 1 times [2023-02-13 23:35:50,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 23:35:50,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208889977] [2023-02-13 23:35:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:50,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 23:35:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-13 23:35:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-13 23:35:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-13 23:35:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-13 23:35:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-13 23:35:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-13 23:35:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-13 23:35:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-13 23:35:52,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 23:35:52,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208889977] [2023-02-13 23:35:52,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208889977] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 23:35:52,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34740131] [2023-02-13 23:35:52,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:52,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 23:35:52,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:35:52,907 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) [2023-02-13 23:35:52,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-13 23:35:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:53,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 177 conjunts are in the unsatisfiable core [2023-02-13 23:35:53,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:35:53,218 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-13 23:35:53,219 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 [2023-02-13 23:35:53,325 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-13 23:35:53,325 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 [2023-02-13 23:35:53,344 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 [2023-02-13 23:35:53,349 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 [2023-02-13 23:35:53,846 INFO L321 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-02-13 23:35:53,847 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 [2023-02-13 23:35:53,907 INFO L321 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2023-02-13 23:35:53,907 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 [2023-02-13 23:35:53,985 INFO L321 Elim1Store]: treesize reduction 122, result has 22.3 percent of original size [2023-02-13 23:35:53,985 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 [2023-02-13 23:35:53,995 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 [2023-02-13 23:35:54,004 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 [2023-02-13 23:35:54,155 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 [2023-02-13 23:35:54,202 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 [2023-02-13 23:35:54,206 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 [2023-02-13 23:35:54,273 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 [2023-02-13 23:35:54,309 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 [2023-02-13 23:35:54,381 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2023-02-13 23:35:54,381 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 [2023-02-13 23:35:54,423 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 [2023-02-13 23:35:54,427 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2023-02-13 23:35:54,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-13 23:35:54,632 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 [2023-02-13 23:35:54,633 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) [2023-02-13 23:35:54,636 INFO L158 Benchmark]: Toolchain (without parser) took 20937.00ms. Allocated memory was 161.5MB in the beginning and 406.8MB in the end (delta: 245.4MB). Free memory was 113.2MB in the beginning and 248.1MB in the end (delta: -134.9MB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. [2023-02-13 23:35:54,637 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-13 23:35:54,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 356.32ms. Allocated memory is still 161.5MB. Free memory was 112.6MB in the beginning and 93.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-13 23:35:54,637 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.68ms. Allocated memory is still 161.5MB. Free memory was 93.7MB in the beginning and 91.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-13 23:35:54,637 INFO L158 Benchmark]: Boogie Preprocessor took 23.28ms. Allocated memory is still 161.5MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-13 23:35:54,637 INFO L158 Benchmark]: RCFGBuilder took 421.85ms. Allocated memory is still 161.5MB. Free memory was 88.9MB in the beginning and 69.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-13 23:35:54,638 INFO L158 Benchmark]: TraceAbstraction took 20088.85ms. Allocated memory was 161.5MB in the beginning and 406.8MB in the end (delta: 245.4MB). Free memory was 68.6MB in the beginning and 248.1MB in the end (delta: -179.6MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2023-02-13 23:35:54,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 161.5MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 356.32ms. Allocated memory is still 161.5MB. Free memory was 112.6MB in the beginning and 93.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.68ms. Allocated memory is still 161.5MB. Free memory was 93.7MB in the beginning and 91.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.28ms. Allocated memory is still 161.5MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 421.85ms. Allocated memory is still 161.5MB. Free memory was 88.9MB in the beginning and 69.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20088.85ms. Allocated memory was 161.5MB in the beginning and 406.8MB in the end (delta: 245.4MB). Free memory was 68.6MB in the beginning and 248.1MB in the end (delta: -179.6MB). Peak memory consumption was 66.4MB. 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. [2023-02-13 23:35:54,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.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 d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-13 23:35:56,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 23:35:56,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 23:35:56,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 23:35:56,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 23:35:56,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 23:35:56,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 23:35:56,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 23:35:56,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 23:35:56,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 23:35:56,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 23:35:56,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 23:35:56,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 23:35:56,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 23:35:56,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 23:35:56,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 23:35:56,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 23:35:56,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 23:35:56,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 23:35:56,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 23:35:56,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 23:35:56,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 23:35:56,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 23:35:56,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 23:35:56,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 23:35:56,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 23:35:56,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 23:35:56,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 23:35:56,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 23:35:56,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 23:35:56,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 23:35:56,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 23:35:56,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 23:35:56,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 23:35:56,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 23:35:56,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 23:35:56,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 23:35:56,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 23:35:56,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 23:35:56,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 23:35:56,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 23:35:56,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-13 23:35:56,613 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 23:35:56,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 23:35:56,614 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-13 23:35:56,615 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-13 23:35:56,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-13 23:35:56,615 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-13 23:35:56,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 23:35:56,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 23:35:56,616 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 23:35:56,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 23:35:56,617 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-13 23:35:56,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-13 23:35:56,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 23:35:56,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-13 23:35:56,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-13 23:35:56,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-13 23:35:56,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-13 23:35:56,618 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-13 23:35:56,618 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-13 23:35:56,618 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-13 23:35:56,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 23:35:56,619 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-13 23:35:56,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-13 23:35:56,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 23:35:56,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 23:35:56,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-13 23:35:56,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:35:56,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 23:35:56,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-13 23:35:56,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 23:35:56,620 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-13 23:35:56,620 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-13 23:35:56,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-13 23:35:56,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-13 23:35:56,621 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-13 23:35:56,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-13 23:35:56,621 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-13 23:35:56,621 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-13 23:35:56,622 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 [2023-02-13 23:35:56,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 23:35:56,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 23:35:56,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 23:35:56,917 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 23:35:56,917 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 23:35:56,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2023-02-13 23:35:57,896 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-13 23:35:58,120 INFO L351 CDTParser]: Found 1 translation units. [2023-02-13 23:35:58,120 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2023-02-13 23:35:58,133 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace20e2b3/38733ed44cd942f1af2dfe2e986eb65f/FLAGf48f942e4 [2023-02-13 23:35:58,144 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace20e2b3/38733ed44cd942f1af2dfe2e986eb65f [2023-02-13 23:35:58,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 23:35:58,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-13 23:35:58,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 23:35:58,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 23:35:58,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 23:35:58,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77d6534d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58, skipping insertion in model container [2023-02-13 23:35:58,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 23:35:58,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 23:35:58,368 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_double_unlock.i[25842,25855] [2023-02-13 23:35:58,371 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_double_unlock.i[25967,25980] [2023-02-13 23:35:58,372 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_double_unlock.i[26082,26095] [2023-02-13 23:35:58,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:35:58,381 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-13 23:35:58,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 23:35:58,434 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_double_unlock.i[25842,25855] [2023-02-13 23:35:58,435 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_double_unlock.i[25967,25980] [2023-02-13 23:35:58,436 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_double_unlock.i[26082,26095] [2023-02-13 23:35:58,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:35:58,442 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 23:35:58,482 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_double_unlock.i[25842,25855] [2023-02-13 23:35:58,486 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_double_unlock.i[25967,25980] [2023-02-13 23:35:58,486 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_double_unlock.i[26082,26095] [2023-02-13 23:35:58,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 23:35:58,525 INFO L208 MainTranslator]: Completed translation [2023-02-13 23:35:58,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58 WrapperNode [2023-02-13 23:35:58,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 23:35:58,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 23:35:58,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 23:35:58,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 23:35:58,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,563 INFO L138 Inliner]: procedures = 140, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 125 [2023-02-13 23:35:58,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 23:35:58,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 23:35:58,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 23:35:58,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 23:35:58,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,601 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 23:35:58,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 23:35:58,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 23:35:58,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 23:35:58,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (1/1) ... [2023-02-13 23:35:58,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-13 23:35:58,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-13 23:35:58,640 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) [2023-02-13 23:35:58,677 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 [2023-02-13 23:35:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-13 23:35:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-13 23:35:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-02-13 23:35:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-02-13 23:35:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-13 23:35:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-13 23:35:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-13 23:35:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-13 23:35:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-13 23:35:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-13 23:35:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-13 23:35:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-13 23:35:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-13 23:35:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-13 23:35:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-13 23:35:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-13 23:35:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-13 23:35:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 23:35:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 23:35:58,839 INFO L235 CfgBuilder]: Building ICFG [2023-02-13 23:35:58,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 23:35:59,157 INFO L276 CfgBuilder]: Performing block encoding [2023-02-13 23:35:59,162 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 23:35:59,162 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-13 23:35:59,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:35:59 BoogieIcfgContainer [2023-02-13 23:35:59,163 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 23:35:59,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 23:35:59,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 23:35:59,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 23:35:59,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 11:35:58" (1/3) ... [2023-02-13 23:35:59,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae7f442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:35:59, skipping insertion in model container [2023-02-13 23:35:59,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 11:35:58" (2/3) ... [2023-02-13 23:35:59,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae7f442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 11:35:59, skipping insertion in model container [2023-02-13 23:35:59,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 11:35:59" (3/3) ... [2023-02-13 23:35:59,172 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2023-02-13 23:35:59,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-13 23:35:59,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-13 23:35:59,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-13 23:35:59,230 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;@7e1189d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-13 23:35:59,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-13 23:35:59,233 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) [2023-02-13 23:35:59,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-13 23:35:59,238 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:59,239 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] [2023-02-13 23:35:59,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:59,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:59,243 INFO L85 PathProgramCache]: Analyzing trace with hash 673246785, now seen corresponding path program 1 times [2023-02-13 23:35:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-13 23:35:59,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104263735] [2023-02-13 23:35:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:59,251 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 [2023-02-13 23:35:59,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-13 23:35:59,265 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) [2023-02-13 23:35:59,266 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 [2023-02-13 23:35:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:59,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-13 23:35:59,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:35:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-13 23:35:59,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:35:59,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-13 23:35:59,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104263735] [2023-02-13 23:35:59,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1104263735] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:35:59,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:35:59,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-13 23:35:59,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620157657] [2023-02-13 23:35:59,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:35:59,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-13 23:35:59,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-13 23:35:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-13 23:35:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-13 23:35:59,444 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) [2023-02-13 23:35:59,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:35:59,474 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2023-02-13 23:35:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-13 23:35:59,475 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 [2023-02-13 23:35:59,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:35:59,480 INFO L225 Difference]: With dead ends: 130 [2023-02-13 23:35:59,480 INFO L226 Difference]: Without dead ends: 62 [2023-02-13 23:35:59,484 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 [2023-02-13 23:35:59,490 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 [2023-02-13 23:35:59,491 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] [2023-02-13 23:35:59,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-13 23:35:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-13 23:35:59,520 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) [2023-02-13 23:35:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2023-02-13 23:35:59,525 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 27 [2023-02-13 23:35:59,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:35:59,526 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2023-02-13 23:35:59,526 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) [2023-02-13 23:35:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2023-02-13 23:35:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-13 23:35:59,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:35:59,528 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] [2023-02-13 23:35:59,549 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 (2)] Forceful destruction successful, exit code 0 [2023-02-13 23:35:59,738 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 [2023-02-13 23:35:59,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:35:59,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:35:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash -387762175, now seen corresponding path program 1 times [2023-02-13 23:35:59,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-13 23:35:59,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848164548] [2023-02-13 23:35:59,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:35:59,744 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 [2023-02-13 23:35:59,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-13 23:35:59,747 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) [2023-02-13 23:35:59,748 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 [2023-02-13 23:35:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:35:59,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-13 23:35:59,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:36:00,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-13 23:36:00,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:36:00,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-13 23:36:00,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848164548] [2023-02-13 23:36:00,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848164548] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:36:00,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:36:00,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-13 23:36:00,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453204879] [2023-02-13 23:36:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:36:00,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-13 23:36:00,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-13 23:36:00,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-13 23:36:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-13 23:36:00,135 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) [2023-02-13 23:36:00,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:36:00,423 INFO L93 Difference]: Finished difference Result 170 states and 208 transitions. [2023-02-13 23:36:00,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-13 23:36:00,423 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 [2023-02-13 23:36:00,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:36:00,426 INFO L225 Difference]: With dead ends: 170 [2023-02-13 23:36:00,426 INFO L226 Difference]: Without dead ends: 116 [2023-02-13 23:36:00,426 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 [2023-02-13 23:36:00,427 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 59 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-13 23:36:00,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 184 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-13 23:36:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-13 23:36:00,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2023-02-13 23:36:00,466 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) [2023-02-13 23:36:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2023-02-13 23:36:00,469 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 27 [2023-02-13 23:36:00,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:36:00,470 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2023-02-13 23:36:00,470 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) [2023-02-13 23:36:00,470 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2023-02-13 23:36:00,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-13 23:36:00,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:36:00,471 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] [2023-02-13 23:36:00,495 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 (3)] Ended with exit code 0 [2023-02-13 23:36:00,679 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 [2023-02-13 23:36:00,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:36:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:36:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash -438555830, now seen corresponding path program 1 times [2023-02-13 23:36:00,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-13 23:36:00,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675427617] [2023-02-13 23:36:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:36:00,681 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 [2023-02-13 23:36:00,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-13 23:36:00,682 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) [2023-02-13 23:36:00,685 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 [2023-02-13 23:36:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:36:00,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-13 23:36:00,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:36:00,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-13 23:36:00,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:36:00,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-13 23:36:00,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675427617] [2023-02-13 23:36:00,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675427617] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:36:00,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:36:00,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-13 23:36:00,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689739807] [2023-02-13 23:36:00,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:36:00,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-13 23:36:00,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-13 23:36:00,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 23:36:00,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-13 23:36:00,768 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) [2023-02-13 23:36:00,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:36:00,793 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2023-02-13 23:36:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 23:36:00,794 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 [2023-02-13 23:36:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:36:00,795 INFO L225 Difference]: With dead ends: 108 [2023-02-13 23:36:00,795 INFO L226 Difference]: Without dead ends: 106 [2023-02-13 23:36:00,795 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 [2023-02-13 23:36:00,795 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 [2023-02-13 23:36:00,796 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] [2023-02-13 23:36:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-13 23:36:00,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-02-13 23:36:00,808 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) [2023-02-13 23:36:00,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 130 transitions. [2023-02-13 23:36:00,809 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 130 transitions. Word has length 27 [2023-02-13 23:36:00,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:36:00,810 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 130 transitions. [2023-02-13 23:36:00,810 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) [2023-02-13 23:36:00,810 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 130 transitions. [2023-02-13 23:36:00,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-13 23:36:00,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:36:00,811 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] [2023-02-13 23:36:00,834 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 [2023-02-13 23:36:01,012 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 [2023-02-13 23:36:01,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:36:01,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:36:01,013 INFO L85 PathProgramCache]: Analyzing trace with hash -811626959, now seen corresponding path program 1 times [2023-02-13 23:36:01,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-13 23:36:01,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571882716] [2023-02-13 23:36:01,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:36:01,013 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 [2023-02-13 23:36:01,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-13 23:36:01,015 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) [2023-02-13 23:36:01,020 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 [2023-02-13 23:36:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:36:01,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-13 23:36:01,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:36:01,271 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 [2023-02-13 23:36:01,273 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 [2023-02-13 23:36:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-13 23:36:01,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:36:01,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-13 23:36:01,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571882716] [2023-02-13 23:36:01,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571882716] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:36:01,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:36:01,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-13 23:36:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587786423] [2023-02-13 23:36:01,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:36:01,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-13 23:36:01,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-13 23:36:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-13 23:36:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-13 23:36:01,441 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) [2023-02-13 23:36:02,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:36:02,719 INFO L93 Difference]: Finished difference Result 268 states and 338 transitions. [2023-02-13 23:36:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-13 23:36:02,723 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 [2023-02-13 23:36:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:36:02,725 INFO L225 Difference]: With dead ends: 268 [2023-02-13 23:36:02,728 INFO L226 Difference]: Without dead ends: 162 [2023-02-13 23:36:02,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-02-13 23:36:02,730 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 167 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2023-02-13 23:36:02,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 309 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-13 23:36:02,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-13 23:36:02,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 122. [2023-02-13 23:36:02,750 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) [2023-02-13 23:36:02,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 153 transitions. [2023-02-13 23:36:02,753 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 153 transitions. Word has length 67 [2023-02-13 23:36:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:36:02,753 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 153 transitions. [2023-02-13 23:36:02,754 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) [2023-02-13 23:36:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 153 transitions. [2023-02-13 23:36:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-13 23:36:02,759 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:36:02,759 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] [2023-02-13 23:36:02,771 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 [2023-02-13 23:36:02,969 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 [2023-02-13 23:36:02,970 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:36:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:36:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1108503363, now seen corresponding path program 1 times [2023-02-13 23:36:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-13 23:36:02,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690865790] [2023-02-13 23:36:02,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:36:02,971 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 [2023-02-13 23:36:02,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-13 23:36:02,972 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) [2023-02-13 23:36:02,974 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 [2023-02-13 23:36:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:36:03,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-13 23:36:03,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:36:03,098 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-13 23:36:03,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-13 23:36:03,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-13 23:36:03,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690865790] [2023-02-13 23:36:03,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690865790] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 23:36:03,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 23:36:03,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-13 23:36:03,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905988591] [2023-02-13 23:36:03,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 23:36:03,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-13 23:36:03,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-13 23:36:03,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 23:36:03,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-13 23:36:03,099 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) [2023-02-13 23:36:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 23:36:03,118 INFO L93 Difference]: Finished difference Result 196 states and 237 transitions. [2023-02-13 23:36:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 23:36:03,118 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 [2023-02-13 23:36:03,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-13 23:36:03,119 INFO L225 Difference]: With dead ends: 196 [2023-02-13 23:36:03,119 INFO L226 Difference]: Without dead ends: 109 [2023-02-13 23:36:03,120 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 [2023-02-13 23:36:03,121 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 [2023-02-13 23:36:03,121 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] [2023-02-13 23:36:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-13 23:36:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-02-13 23:36:03,129 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) [2023-02-13 23:36:03,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-02-13 23:36:03,129 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 67 [2023-02-13 23:36:03,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-13 23:36:03,130 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-02-13 23:36:03,130 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) [2023-02-13 23:36:03,130 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-02-13 23:36:03,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-13 23:36:03,131 INFO L187 NwaCegarLoop]: Found error trace [2023-02-13 23:36:03,131 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] [2023-02-13 23:36:03,143 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 [2023-02-13 23:36:03,343 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 [2023-02-13 23:36:03,344 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-13 23:36:03,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 23:36:03,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1210243856, now seen corresponding path program 1 times [2023-02-13 23:36:03,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-13 23:36:03,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552371509] [2023-02-13 23:36:03,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 23:36:03,345 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 [2023-02-13 23:36:03,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-13 23:36:03,346 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) [2023-02-13 23:36:03,348 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 [2023-02-13 23:36:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 23:36:03,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 91 conjunts are in the unsatisfiable core [2023-02-13 23:36:03,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 23:36:03,632 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-13 23:36:03,635 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 [2023-02-13 23:36:03,784 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2023-02-13 23:36:03,784 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 [2023-02-13 23:36:03,864 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 [2023-02-13 23:36:04,473 INFO L321 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2023-02-13 23:36:04,473 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 [2023-02-13 23:36:04,488 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 [2023-02-13 23:36:04,502 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 [2023-02-13 23:36:04,517 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 [2023-02-13 23:36:04,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-13 23:36:04,940 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:36:04,946 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:36:04,947 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 [2023-02-13 23:36:04,971 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 [2023-02-13 23:36:04,984 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 [2023-02-13 23:36:04,992 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:36:04,996 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:36:05,010 INFO L321 Elim1Store]: treesize reduction 24, result has 25.0 percent of original size [2023-02-13 23:36:05,010 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 [2023-02-13 23:36:05,018 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 [2023-02-13 23:36:05,044 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 [2023-02-13 23:36:05,081 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 [2023-02-13 23:36:06,157 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 [2023-02-13 23:36:18,965 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:38:09,534 WARN L233 SmtUtils]: Spent 1.84m 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) [2023-02-13 23:38:09,535 INFO L321 Elim1Store]: treesize reduction 104, result has 33.8 percent of original size [2023-02-13 23:38:09,536 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 [2023-02-13 23:38:09,559 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-13 23:38:09,614 INFO L173 IndexEqualityManager]: detected equality via solver