./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:03:31,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:03:31,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:03:31,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:03:31,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:03:31,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:03:31,720 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:03:31,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:03:31,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:03:31,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:03:31,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:03:31,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:03:31,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:03:31,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:03:31,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:03:31,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:03:31,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:03:31,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:03:31,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:03:31,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:03:31,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:03:31,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:03:31,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:03:31,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:03:31,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:03:31,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:03:31,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:03:31,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:03:31,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:03:31,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:03:31,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:03:31,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:03:31,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:03:31,753 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:03:31,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:03:31,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:03:31,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:03:31,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:03:31,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:03:31,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:03:31,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:03:31,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:03:31,787 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:03:31,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:03:31,787 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:03:31,788 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:03:31,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:03:31,788 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:03:31,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:03:31,789 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:03:31,789 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:03:31,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:03:31,789 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:03:31,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:03:31,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:03:31,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:03:31,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:03:31,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:03:31,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:03:31,790 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:03:31,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:03:31,791 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:03:31,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:03:31,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:03:31,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:03:31,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:03:31,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:31,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:03:31,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:03:31,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:03:31,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:03:31,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:03:31,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:03:31,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:03:31,792 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:03:31,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:03:31,793 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:03:31,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd310154a8f082280317f3bf1f868dbee13522304c8e13d29736e7fb8b36c7cf [2023-02-16 01:03:31,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:03:32,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:03:32,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:03:32,060 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:03:32,061 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:03:32,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2023-02-16 01:03:33,124 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:03:33,415 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:03:33,418 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unlock_at_exit.i [2023-02-16 01:03:33,436 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/841740c5b/f2ff80248e9441b2b42819d27ef16998/FLAG354d5159c [2023-02-16 01:03:33,688 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/841740c5b/f2ff80248e9441b2b42819d27ef16998 [2023-02-16 01:03:33,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:03:33,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:03:33,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:33,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:03:33,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:03:33,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:33" (1/1) ... [2023-02-16 01:03:33,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28284df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:33, skipping insertion in model container [2023-02-16 01:03:33,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:03:33" (1/1) ... [2023-02-16 01:03:33,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:03:33,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:03:34,156 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_unlock_at_exit.i[25842,25855] [2023-02-16 01:03:34,162 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_unlock_at_exit.i[25967,25980] [2023-02-16 01:03:34,165 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_unlock_at_exit.i[26082,26095] [2023-02-16 01:03:34,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:34,178 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:03:34,237 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_unlock_at_exit.i[25842,25855] [2023-02-16 01:03:34,238 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_unlock_at_exit.i[25967,25980] [2023-02-16 01:03:34,239 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_unlock_at_exit.i[26082,26095] [2023-02-16 01:03:34,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:03:34,263 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:03:34,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34 WrapperNode [2023-02-16 01:03:34,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:03:34,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:34,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:03:34,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:03:34,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,309 INFO L138 Inliner]: procedures = 139, calls = 56, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 128 [2023-02-16 01:03:34,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:03:34,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:03:34,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:03:34,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:03:34,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,342 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:03:34,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:03:34,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:03:34,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:03:34,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (1/1) ... [2023-02-16 01:03:34,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:03:34,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:34,378 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) [2023-02-16 01:03:34,445 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 [2023-02-16 01:03:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-02-16 01:03:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-02-16 01:03:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 01:03:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-02-16 01:03:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-02-16 01:03:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:03:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 01:03:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-02-16 01:03:34,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-02-16 01:03:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 01:03:34,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 01:03:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 01:03:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:03:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-02-16 01:03:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-02-16 01:03:34,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:03:34,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:03:34,605 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:03:34,619 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:03:34,817 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:03:34,822 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:03:34,822 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:03:34,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:34 BoogieIcfgContainer [2023-02-16 01:03:34,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:03:34,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:03:34,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:03:34,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:03:34,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:03:33" (1/3) ... [2023-02-16 01:03:34,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4907124f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:34, skipping insertion in model container [2023-02-16 01:03:34,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:03:34" (2/3) ... [2023-02-16 01:03:34,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4907124f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:03:34, skipping insertion in model container [2023-02-16 01:03:34,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:03:34" (3/3) ... [2023-02-16 01:03:34,829 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2023-02-16 01:03:34,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:03:34,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-02-16 01:03:34,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:03:34,873 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;@73b520bf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:03:34,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-02-16 01:03:34,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 01:03:34,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:34,880 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:34,881 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] [2023-02-16 01:03:34,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:34,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:34,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1577806477, now seen corresponding path program 1 times [2023-02-16 01:03:34,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:34,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348338390] [2023-02-16 01:03:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:35,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:35,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348338390] [2023-02-16 01:03:35,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348338390] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:35,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:35,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:03:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890668718] [2023-02-16 01:03:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:35,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:03:35,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:35,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:03:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:03:35,125 INFO L87 Difference]: Start difference. First operand has 66 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 52 states have internal predecessors, (63), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 01:03:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:35,216 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2023-02-16 01:03:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:03:35,218 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 [2023-02-16 01:03:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:35,223 INFO L225 Difference]: With dead ends: 131 [2023-02-16 01:03:35,224 INFO L226 Difference]: Without dead ends: 64 [2023-02-16 01:03:35,226 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 [2023-02-16 01:03:35,228 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 21 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:35,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 99 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:03:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-16 01:03:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2023-02-16 01:03:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 47 states have internal predecessors, (52), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 01:03:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-02-16 01:03:35,254 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 28 [2023-02-16 01:03:35,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:35,254 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-02-16 01:03:35,254 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) [2023-02-16 01:03:35,254 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-02-16 01:03:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:35,255 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:35,256 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] [2023-02-16 01:03:35,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:03:35,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:35,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:35,257 INFO L85 PathProgramCache]: Analyzing trace with hash -109345869, now seen corresponding path program 1 times [2023-02-16 01:03:35,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:35,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103904843] [2023-02-16 01:03:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:35,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103904843] [2023-02-16 01:03:35,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103904843] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:35,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:35,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 01:03:35,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142275707] [2023-02-16 01:03:35,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:35,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:03:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:03:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:03:35,388 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:35,472 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2023-02-16 01:03:35,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:03:35,472 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 [2023-02-16 01:03:35,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:35,474 INFO L225 Difference]: With dead ends: 70 [2023-02-16 01:03:35,474 INFO L226 Difference]: Without dead ends: 68 [2023-02-16 01:03:35,474 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 [2023-02-16 01:03:35,475 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 24 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:35,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 192 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:03:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-16 01:03:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2023-02-16 01:03:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 50 states have internal predecessors, (55), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (12), 10 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-16 01:03:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 76 transitions. [2023-02-16 01:03:35,482 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 76 transitions. Word has length 28 [2023-02-16 01:03:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:35,483 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 76 transitions. [2023-02-16 01:03:35,483 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) [2023-02-16 01:03:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 76 transitions. [2023-02-16 01:03:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 01:03:35,484 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:35,484 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] [2023-02-16 01:03:35,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 01:03:35,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1465257436, now seen corresponding path program 1 times [2023-02-16 01:03:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:35,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472259813] [2023-02-16 01:03:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 01:03:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:35,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:35,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472259813] [2023-02-16 01:03:35,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472259813] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:35,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:03:35,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 01:03:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028710521] [2023-02-16 01:03:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:35,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:03:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:03:35,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:35,723 INFO L87 Difference]: Start difference. First operand 65 states and 76 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 01:03:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:36,018 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2023-02-16 01:03:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:03:36,019 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 [2023-02-16 01:03:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:36,020 INFO L225 Difference]: With dead ends: 186 [2023-02-16 01:03:36,020 INFO L226 Difference]: Without dead ends: 129 [2023-02-16 01:03:36,021 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 [2023-02-16 01:03:36,022 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 126 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:36,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 246 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:03:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-16 01:03:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 99. [2023-02-16 01:03:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 77 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 10 states have return successors, (21), 14 states have call predecessors, (21), 14 states have call successors, (21) [2023-02-16 01:03:36,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2023-02-16 01:03:36,033 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 28 [2023-02-16 01:03:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:36,033 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2023-02-16 01:03:36,033 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) [2023-02-16 01:03:36,033 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2023-02-16 01:03:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-16 01:03:36,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:36,035 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] [2023-02-16 01:03:36,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 01:03:36,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1566335676, now seen corresponding path program 1 times [2023-02-16 01:03:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:36,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382931618] [2023-02-16 01:03:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:36,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:37,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:38,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:03:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:03:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-16 01:03:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 01:03:39,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:39,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382931618] [2023-02-16 01:03:39,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382931618] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:39,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69430387] [2023-02-16 01:03:39,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:39,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:39,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:39,415 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) [2023-02-16 01:03:39,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:03:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:39,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 202 conjunts are in the unsatisfiable core [2023-02-16 01:03:39,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:39,879 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:39,880 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 [2023-02-16 01:03:40,084 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-16 01:03:40,085 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 [2023-02-16 01:03:40,245 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 [2023-02-16 01:03:40,248 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 [2023-02-16 01:03:41,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,610 INFO L321 Elim1Store]: treesize reduction 158, result has 24.0 percent of original size [2023-02-16 01:03:41,611 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 204 treesize of output 165 [2023-02-16 01:03:41,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,648 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 48 treesize of output 28 [2023-02-16 01:03:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,665 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 112 treesize of output 80 [2023-02-16 01:03:41,679 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-16 01:03:41,683 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 [2023-02-16 01:03:41,702 INFO L321 Elim1Store]: treesize reduction 22, result has 47.6 percent of original size [2023-02-16 01:03:41,703 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 116 treesize of output 96 [2023-02-16 01:03:41,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:03:41,713 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 131 treesize of output 99 [2023-02-16 01:03:41,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:41,727 INFO L321 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-02-16 01:03:41,727 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 33 treesize of output 37 [2023-02-16 01:03:41,734 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 13 treesize of output 11 [2023-02-16 01:03:42,574 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-16 01:03:42,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:03:44,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69430387] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:44,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:03:44,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29] total 59 [2023-02-16 01:03:44,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844003189] [2023-02-16 01:03:44,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:03:44,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-16 01:03:44,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:44,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-16 01:03:44,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4029, Unknown=7, NotChecked=0, Total=4290 [2023-02-16 01:03:44,388 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-16 01:03:49,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:49,557 INFO L93 Difference]: Finished difference Result 241 states and 284 transitions. [2023-02-16 01:03:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-16 01:03:49,558 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 63 [2023-02-16 01:03:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:49,560 INFO L225 Difference]: With dead ends: 241 [2023-02-16 01:03:49,560 INFO L226 Difference]: Without dead ends: 181 [2023-02-16 01:03:49,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1970 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=815, Invalid=8880, Unknown=7, NotChecked=0, Total=9702 [2023-02-16 01:03:49,564 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 599 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 2961 mSolverCounterSat, 137 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 2961 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:49,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2083 Invalid, 3099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 2961 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-02-16 01:03:49,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-02-16 01:03:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 119. [2023-02-16 01:03:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.160919540229885) internal successors, (101), 93 states have internal predecessors, (101), 16 states have call successors, (16), 8 states have call predecessors, (16), 13 states have return successors, (24), 17 states have call predecessors, (24), 16 states have call successors, (24) [2023-02-16 01:03:49,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2023-02-16 01:03:49,591 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 63 [2023-02-16 01:03:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:49,593 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2023-02-16 01:03:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 1.7291666666666667) internal successors, (83), 41 states have internal predecessors, (83), 16 states have call successors, (18), 12 states have call predecessors, (18), 14 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-16 01:03:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2023-02-16 01:03:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-16 01:03:49,597 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:49,597 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] [2023-02-16 01:03:49,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 01:03:49,804 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 [2023-02-16 01:03:49,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:49,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1979205398, now seen corresponding path program 1 times [2023-02-16 01:03:49,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:49,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149250375] [2023-02-16 01:03:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 01:03:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-16 01:03:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-02-16 01:03:49,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149250375] [2023-02-16 01:03:49,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149250375] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:49,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37749760] [2023-02-16 01:03:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:49,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:49,945 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) [2023-02-16 01:03:49,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:03:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:03:50,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-16 01:03:50,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:03:50,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37749760] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:50,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:03:50,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-02-16 01:03:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653695115] [2023-02-16 01:03:50,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:50,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:03:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:03:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:50,132 INFO L87 Difference]: Start difference. First operand 119 states and 141 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, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 01:03:50,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:50,174 INFO L93 Difference]: Finished difference Result 203 states and 239 transitions. [2023-02-16 01:03:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:03:50,174 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, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2023-02-16 01:03:50,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:50,178 INFO L225 Difference]: With dead ends: 203 [2023-02-16 01:03:50,178 INFO L226 Difference]: Without dead ends: 127 [2023-02-16 01:03:50,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:03:50,182 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 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 [2023-02-16 01:03:50,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:03:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-16 01:03:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2023-02-16 01:03:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 97 states have internal predecessors, (106), 16 states have call successors, (16), 8 states have call predecessors, (16), 14 states have return successors, (25), 19 states have call predecessors, (25), 16 states have call successors, (25) [2023-02-16 01:03:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2023-02-16 01:03:50,222 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 71 [2023-02-16 01:03:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:50,223 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2023-02-16 01:03:50,223 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, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 01:03:50,223 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2023-02-16 01:03:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-16 01:03:50,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:50,230 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] [2023-02-16 01:03:50,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:03:50,430 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 [2023-02-16 01:03:50,431 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash 2093878652, now seen corresponding path program 1 times [2023-02-16 01:03:50,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:50,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202365004] [2023-02-16 01:03:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:50,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:50,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 01:03:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-02-16 01:03:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-16 01:03:51,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:51,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202365004] [2023-02-16 01:03:51,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202365004] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:51,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600010162] [2023-02-16 01:03:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:51,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:51,519 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) [2023-02-16 01:03:51,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:03:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:51,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-16 01:03:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:51,826 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 [2023-02-16 01:03:51,833 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 [2023-02-16 01:03:51,979 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 [2023-02-16 01:03:51,984 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 [2023-02-16 01:03:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-02-16 01:03:52,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:03:52,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600010162] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:03:52,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 01:03:52,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [28] total 35 [2023-02-16 01:03:52,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887691841] [2023-02-16 01:03:52,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:03:52,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 01:03:52,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 01:03:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2023-02-16 01:03:52,227 INFO L87 Difference]: Start difference. First operand 125 states and 147 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, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 01:03:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:03:52,666 INFO L93 Difference]: Finished difference Result 261 states and 302 transitions. [2023-02-16 01:03:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 01:03:52,666 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, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 71 [2023-02-16 01:03:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:03:52,667 INFO L225 Difference]: With dead ends: 261 [2023-02-16 01:03:52,667 INFO L226 Difference]: Without dead ends: 130 [2023-02-16 01:03:52,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2023-02-16 01:03:52,668 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 145 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:03:52,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 238 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 01:03:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-16 01:03:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2023-02-16 01:03:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.1333333333333333) internal successors, (102), 94 states have internal predecessors, (102), 14 states have call successors, (14), 9 states have call predecessors, (14), 13 states have return successors, (19), 16 states have call predecessors, (19), 14 states have call successors, (19) [2023-02-16 01:03:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2023-02-16 01:03:52,686 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 71 [2023-02-16 01:03:52,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:03:52,687 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2023-02-16 01:03:52,688 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, (8), 4 states have call predecessors, (8), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 01:03:52,688 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2023-02-16 01:03:52,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-16 01:03:52,689 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:03:52,689 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] [2023-02-16 01:03:52,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:03:52,895 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 [2023-02-16 01:03:52,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:03:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:03:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash -818250910, now seen corresponding path program 1 times [2023-02-16 01:03:52,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:03:52,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302214480] [2023-02-16 01:03:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:52,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:03:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:03:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:53,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:03:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:03:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:03:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:03:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:54,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:03:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:54,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-02-16 01:03:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 01:03:54,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:03:54,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302214480] [2023-02-16 01:03:54,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302214480] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:54,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76266079] [2023-02-16 01:03:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:03:54,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:03:54,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:03:54,977 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) [2023-02-16 01:03:54,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:03:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:03:55,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 197 conjunts are in the unsatisfiable core [2023-02-16 01:03:55,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:03:55,292 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:55,292 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 [2023-02-16 01:03:55,461 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:03:55,461 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 [2023-02-16 01:03:55,496 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 [2023-02-16 01:03:55,502 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 [2023-02-16 01:03:56,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:56,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:56,449 INFO L321 Elim1Store]: treesize reduction 84, result has 15.2 percent of original size [2023-02-16 01:03:56,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 164 [2023-02-16 01:03:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:56,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:56,459 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 49 treesize of output 38 [2023-02-16 01:03:56,470 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-02-16 01:03:56,470 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 273 treesize of output 173 [2023-02-16 01:03:56,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:56,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 155 [2023-02-16 01:03:56,479 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 [2023-02-16 01:03:56,482 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 178 treesize of output 150 [2023-02-16 01:03:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:56,490 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 0 case distinctions, treesize of input 152 treesize of output 110 [2023-02-16 01:03:56,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 72 [2023-02-16 01:03:56,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:03:56,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 17 treesize of output 7 [2023-02-16 01:03:56,509 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 14 treesize of output 13 [2023-02-16 01:03:56,514 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 17 treesize of output 27 [2023-02-16 01:03:56,518 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 15 treesize of output 13 [2023-02-16 01:03:56,554 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 [2023-02-16 01:03:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:03:57,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:03:59,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76266079] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:03:59,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:03:59,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27] total 51 [2023-02-16 01:03:59,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089386338] [2023-02-16 01:03:59,553 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:03:59,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-16 01:03:59,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:03:59,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-16 01:03:59,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=3041, Unknown=17, NotChecked=0, Total=3306 [2023-02-16 01:03:59,554 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 51 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 40 states have internal predecessors, (90), 12 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 11 states have call successors, (16) [2023-02-16 01:04:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:04:04,172 INFO L93 Difference]: Finished difference Result 238 states and 267 transitions. [2023-02-16 01:04:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-16 01:04:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 40 states have internal predecessors, (90), 12 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 11 states have call successors, (16) Word has length 66 [2023-02-16 01:04:04,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:04:04,175 INFO L225 Difference]: With dead ends: 238 [2023-02-16 01:04:04,175 INFO L226 Difference]: Without dead ends: 129 [2023-02-16 01:04:04,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2267 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1039, Invalid=8418, Unknown=49, NotChecked=0, Total=9506 [2023-02-16 01:04:04,180 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 859 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 168 mSolverCounterUnsat, 39 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 39 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:04:04,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1045 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2119 Invalid, 39 Unknown, 0 Unchecked, 2.1s Time] [2023-02-16 01:04:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-02-16 01:04:04,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2023-02-16 01:04:04,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 77 states have (on average 1.0649350649350648) internal successors, (82), 78 states have internal predecessors, (82), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-16 01:04:04,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2023-02-16 01:04:04,194 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 66 [2023-02-16 01:04:04,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:04:04,194 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2023-02-16 01:04:04,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 1.9148936170212767) internal successors, (90), 40 states have internal predecessors, (90), 12 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 11 states have call successors, (16) [2023-02-16 01:04:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2023-02-16 01:04:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-02-16 01:04:04,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:04:04,196 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 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] [2023-02-16 01:04:04,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:04:04,403 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 [2023-02-16 01:04:04,403 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:04:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:04:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash -299426104, now seen corresponding path program 1 times [2023-02-16 01:04:04,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:04:04,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888371191] [2023-02-16 01:04:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:04:04,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:04:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:04:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:04:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:04:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:04:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:04:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:04:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:04:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-02-16 01:04:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:04:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:04:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 01:04:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 01:04:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-02-16 01:04:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-02-16 01:04:05,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:04:05,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888371191] [2023-02-16 01:04:05,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888371191] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:04:05,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:04:05,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-02-16 01:04:05,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415224604] [2023-02-16 01:04:05,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:04:05,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 01:04:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:04:05,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 01:04:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:04:05,082 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-16 01:04:05,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:04:05,731 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2023-02-16 01:04:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 01:04:05,731 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 103 [2023-02-16 01:04:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:04:05,732 INFO L225 Difference]: With dead ends: 136 [2023-02-16 01:04:05,732 INFO L226 Difference]: Without dead ends: 116 [2023-02-16 01:04:05,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2023-02-16 01:04:05,733 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 231 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 01:04:05,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 383 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 01:04:05,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-16 01:04:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2023-02-16 01:04:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 78 states have (on average 1.064102564102564) internal successors, (83), 79 states have internal predecessors, (83), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-16 01:04:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2023-02-16 01:04:05,742 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 103 [2023-02-16 01:04:05,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:04:05,743 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2023-02-16 01:04:05,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-02-16 01:04:05,743 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2023-02-16 01:04:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-02-16 01:04:05,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:04:05,744 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 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] [2023-02-16 01:04:05,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 01:04:05,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:04:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:04:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1275177201, now seen corresponding path program 1 times [2023-02-16 01:04:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:04:05,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230116916] [2023-02-16 01:04:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:04:05,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:04:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:04:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:04:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:04:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:04:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:04:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:04:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:04:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-02-16 01:04:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:04:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:04:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 01:04:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 01:04:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-02-16 01:04:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:05,885 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-02-16 01:04:05,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:04:05,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230116916] [2023-02-16 01:04:05,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230116916] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:04:05,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:04:05,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 01:04:05,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93970916] [2023-02-16 01:04:05,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:04:05,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 01:04:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:04:05,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 01:04:05,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:04:05,888 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-16 01:04:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:04:05,985 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2023-02-16 01:04:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 01:04:05,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 103 [2023-02-16 01:04:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:04:05,986 INFO L225 Difference]: With dead ends: 108 [2023-02-16 01:04:05,986 INFO L226 Difference]: Without dead ends: 106 [2023-02-16 01:04:05,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-16 01:04:05,987 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 34 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:04:05,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 179 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:04:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-16 01:04:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-16 01:04:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.0617283950617284) internal successors, (86), 82 states have internal predecessors, (86), 13 states have call successors, (13), 9 states have call predecessors, (13), 10 states have return successors, (14), 14 states have call predecessors, (14), 13 states have call successors, (14) [2023-02-16 01:04:05,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 113 transitions. [2023-02-16 01:04:05,995 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 113 transitions. Word has length 103 [2023-02-16 01:04:05,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:04:05,995 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 113 transitions. [2023-02-16 01:04:05,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-02-16 01:04:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 113 transitions. [2023-02-16 01:04:05,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-02-16 01:04:05,996 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:04:05,996 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 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] [2023-02-16 01:04:05,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-16 01:04:05,996 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:04:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:04:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1365564594, now seen corresponding path program 2 times [2023-02-16 01:04:05,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:04:05,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324940483] [2023-02-16 01:04:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:04:05,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:04:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-16 01:04:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:04:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-16 01:04:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:04:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:04:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-16 01:04:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:04:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:07,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-02-16 01:04:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:08,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 01:04:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 01:04:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:08,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-16 01:04:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 01:04:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-02-16 01:04:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:04:08,627 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 46 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-02-16 01:04:08,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:04:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324940483] [2023-02-16 01:04:08,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324940483] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:04:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592329661] [2023-02-16 01:04:08,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:04:08,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:04:08,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:04:08,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:04:08,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:04:08,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:04:08,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:04:08,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 222 conjunts are in the unsatisfiable core [2023-02-16 01:04:08,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:04:08,992 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 6 treesize of output 5 [2023-02-16 01:04:09,400 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 0 case distinctions, treesize of input 12 treesize of output 9 [2023-02-16 01:04:09,426 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-02-16 01:04:09,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-02-16 01:04:09,447 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-02-16 01:04:09,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 12 treesize of output 27 [2023-02-16 01:04:09,493 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 01:04:09,493 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 [2023-02-16 01:04:10,199 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 8 treesize of output 4 [2023-02-16 01:04:10,201 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:04:10,343 INFO L321 Elim1Store]: treesize reduction 162, result has 40.7 percent of original size [2023-02-16 01:04:10,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 354 treesize of output 392 [2023-02-16 01:04:10,457 INFO L321 Elim1Store]: treesize reduction 117, result has 17.6 percent of original size [2023-02-16 01:04:10,457 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 3 new quantified variables, introduced 15 case distinctions, treesize of input 131 treesize of output 190 [2023-02-16 01:04:10,478 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 [2023-02-16 01:04:10,494 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 [2023-02-16 01:04:10,635 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:04:10,687 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 [2023-02-16 01:04:10,770 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:04:11,087 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:04:11,811 INFO L321 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2023-02-16 01:04:11,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 107 treesize of output 176 [2023-02-16 01:04:12,033 INFO L321 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2023-02-16 01:04:12,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 297 treesize of output 284 [2023-02-16 01:04:12,162 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-02-16 01:04:12,163 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 3 case distinctions, treesize of input 63 treesize of output 17 [2023-02-16 01:04:12,199 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-02-16 01:04:12,199 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 3 case distinctions, treesize of input 63 treesize of output 17 [2023-02-16 01:04:12,226 INFO L321 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-02-16 01:04:12,226 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 3 case distinctions, treesize of input 63 treesize of output 17 [2023-02-16 01:04:12,264 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 01:04:12,264 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 19 treesize of output 13 [2023-02-16 01:04:12,332 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 01:04:12,332 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 19 treesize of output 13 [2023-02-16 01:04:13,840 INFO L321 Elim1Store]: treesize reduction 1056, result has 4.6 percent of original size [2023-02-16 01:04:13,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 14 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 16 new quantified variables, introduced 28 case distinctions, treesize of input 1942 treesize of output 4631 [2023-02-16 01:05:05,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:05:05,761 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:05:05,786 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:05:05,789 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 592 treesize of output 479 [2023-02-16 01:05:06,181 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 01:05:06,181 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 40 treesize of output 32 [2023-02-16 01:05:06,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 24 treesize of output 16 [2023-02-16 01:05:06,361 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 01:05:06,362 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 64 treesize of output 56 [2023-02-16 01:05:06,508 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-16 01:05:06,509 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 40 treesize of output 32 [2023-02-16 01:05:06,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 24 treesize of output 16 [2023-02-16 01:05:06,622 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 [2023-02-16 01:06:01,034 INFO L190 IndexEqualityManager]: detected not equals via solver