./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 13:00:06,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 13:00:06,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 13:00:06,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 13:00:06,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 13:00:06,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 13:00:06,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 13:00:06,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 13:00:06,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 13:00:06,525 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 13:00:06,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 13:00:06,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 13:00:06,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 13:00:06,527 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 13:00:06,527 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 13:00:06,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 13:00:06,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 13:00:06,529 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 13:00:06,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 13:00:06,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 13:00:06,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 13:00:06,530 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 13:00:06,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 13:00:06,531 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 13:00:06,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 13:00:06,532 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 13:00:06,532 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 13:00:06,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 13:00:06,533 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 13:00:06,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 13:00:06,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 13:00:06,534 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 13:00:06,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:00:06,535 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 13:00:06,535 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 13:00:06,535 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 13:00:06,536 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 13:00:06,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 13:00:06,536 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 13:00:06,536 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 13:00:06,537 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 13:00:06,537 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 13:00:06,537 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 [2024-11-18 13:00:06,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 13:00:06,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 13:00:06,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 13:00:06,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 13:00:06,804 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 13:00:06,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-18 13:00:08,271 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 13:00:08,514 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 13:00:08,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-18 13:00:08,529 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b57b16ce/610adf5f45904bd482c9e69a098d7b45/FLAGa92a0db9a [2024-11-18 13:00:08,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b57b16ce/610adf5f45904bd482c9e69a098d7b45 [2024-11-18 13:00:08,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 13:00:08,841 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 13:00:08,842 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 13:00:08,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 13:00:08,849 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 13:00:08,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:00:08" (1/1) ... [2024-11-18 13:00:08,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68edf0c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:08, skipping insertion in model container [2024-11-18 13:00:08,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:00:08" (1/1) ... [2024-11-18 13:00:08,909 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 13:00:09,305 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2024-11-18 13:00:09,312 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2024-11-18 13:00:09,314 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2024-11-18 13:00:09,316 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:00:09,328 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 13:00:09,391 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2024-11-18 13:00:09,392 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2024-11-18 13:00:09,393 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2024-11-18 13:00:09,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 13:00:09,428 INFO L204 MainTranslator]: Completed translation [2024-11-18 13:00:09,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09 WrapperNode [2024-11-18 13:00:09,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 13:00:09,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 13:00:09,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 13:00:09,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 13:00:09,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,480 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 140 [2024-11-18 13:00:09,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 13:00:09,481 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 13:00:09,481 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 13:00:09,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 13:00:09,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,504 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,545 INFO L175 MemorySlicer]: Split 22 memory accesses to 2 slices as follows [2, 20]. 91 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 7 writes are split as follows [0, 7]. [2024-11-18 13:00:09,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,559 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 13:00:09,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 13:00:09,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 13:00:09,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 13:00:09,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (1/1) ... [2024-11-18 13:00:09,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 13:00:09,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:00:09,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-18 13:00:09,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-18 13:00:09,668 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-18 13:00:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-18 13:00:09,668 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-18 13:00:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-18 13:00:09,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-18 13:00:09,668 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-18 13:00:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-18 13:00:09,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 13:00:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-18 13:00:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-18 13:00:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-18 13:00:09,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-18 13:00:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-18 13:00:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-18 13:00:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-18 13:00:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-18 13:00:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-18 13:00:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 13:00:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-18 13:00:09,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-11-18 13:00:09,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-11-18 13:00:09,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 13:00:09,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 13:00:09,799 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 13:00:09,803 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 13:00:10,080 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-18 13:00:10,081 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 13:00:10,102 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 13:00:10,102 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-18 13:00:10,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:00:10 BoogieIcfgContainer [2024-11-18 13:00:10,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 13:00:10,104 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 13:00:10,104 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 13:00:10,107 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 13:00:10,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:00:08" (1/3) ... [2024-11-18 13:00:10,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f4f647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:00:10, skipping insertion in model container [2024-11-18 13:00:10,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:00:09" (2/3) ... [2024-11-18 13:00:10,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f4f647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:00:10, skipping insertion in model container [2024-11-18 13:00:10,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:00:10" (3/3) ... [2024-11-18 13:00:10,111 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2024-11-18 13:00:10,129 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 13:00:10,129 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-18 13:00:10,203 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 13:00:10,210 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@308c8893, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 13:00:10,210 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-18 13:00:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-18 13:00:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:00:10,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:00:10,221 INFO L215 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] [2024-11-18 13:00:10,221 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:00:10,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:00:10,225 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2024-11-18 13:00:10,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:00:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684591970] [2024-11-18 13:00:10,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:00:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-18 13:00:10,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:00:10,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684591970] [2024-11-18 13:00:10,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684591970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:00:10,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753775408] [2024-11-18 13:00:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:10,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:00:10,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:00:10,453 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) [2024-11-18 13:00:10,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 13:00:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:10,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 13:00:10,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:00:10,597 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-18 13:00:10,598 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:00:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753775408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:00:10,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:00:10,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 13:00:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392595361] [2024-11-18 13:00:10,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:00:10,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 13:00:10,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:00:10,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 13:00:10,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:00:10,633 INFO L87 Difference]: Start difference. First operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:00:10,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:00:10,658 INFO L93 Difference]: Finished difference Result 136 states and 177 transitions. [2024-11-18 13:00:10,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 13:00:10,661 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-18 13:00:10,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:00:10,688 INFO L225 Difference]: With dead ends: 136 [2024-11-18 13:00:10,690 INFO L226 Difference]: Without dead ends: 65 [2024-11-18 13:00:10,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 13:00:10,696 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:00:10,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:00:10,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-18 13:00:10,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-18 13:00:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-18 13:00:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-18 13:00:10,736 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2024-11-18 13:00:10,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:00:10,737 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-18 13:00:10,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-18 13:00:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-18 13:00:10,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:00:10,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:00:10,739 INFO L215 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] [2024-11-18 13:00:10,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 13:00:10,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 13:00:10,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:00:10,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:00:10,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2024-11-18 13:00:10,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:00:10,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746766759] [2024-11-18 13:00:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:10,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:00:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:11,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:00:11,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:00:11,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746766759] [2024-11-18 13:00:11,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746766759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:00:11,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:00:11,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 13:00:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448422833] [2024-11-18 13:00:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:00:11,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:00:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:00:11,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:00:11,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:00:11,114 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 13:00:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:00:11,135 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2024-11-18 13:00:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:00:11,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-18 13:00:11,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:00:11,138 INFO L225 Difference]: With dead ends: 71 [2024-11-18 13:00:11,138 INFO L226 Difference]: Without dead ends: 69 [2024-11-18 13:00:11,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:00:11,140 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:00:11,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 216 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:00:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-18 13:00:11,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-18 13:00:11,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-18 13:00:11,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2024-11-18 13:00:11,155 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2024-11-18 13:00:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:00:11,155 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2024-11-18 13:00:11,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-18 13:00:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2024-11-18 13:00:11,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-18 13:00:11,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:00:11,157 INFO L215 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] [2024-11-18 13:00:11,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 13:00:11,157 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:00:11,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:00:11,158 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2024-11-18 13:00:11,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:00:11,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334351425] [2024-11-18 13:00:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:11,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:00:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:11,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 13:00:11,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:00:11,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334351425] [2024-11-18 13:00:11,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334351425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:00:11,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 13:00:11,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 13:00:11,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626126593] [2024-11-18 13:00:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:00:11,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 13:00:11,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:00:11,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 13:00:11,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 13:00:11,533 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2024-11-18 13:00:11,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:00:11,932 INFO L93 Difference]: Finished difference Result 195 states and 245 transitions. [2024-11-18 13:00:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 13:00:11,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 [2024-11-18 13:00:11,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:00:11,935 INFO L225 Difference]: With dead ends: 195 [2024-11-18 13:00:11,936 INFO L226 Difference]: Without dead ends: 134 [2024-11-18 13:00:11,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-18 13:00:11,940 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 81 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 13:00:11,941 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 217 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 13:00:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-18 13:00:11,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 111. [2024-11-18 13:00:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 83 states have internal predecessors, (93), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2024-11-18 13:00:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2024-11-18 13:00:11,970 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 137 transitions. Word has length 28 [2024-11-18 13:00:11,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:00:11,971 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 137 transitions. [2024-11-18 13:00:11,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2024-11-18 13:00:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 137 transitions. [2024-11-18 13:00:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 13:00:11,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:00:11,975 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:00:11,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 13:00:11,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:00:11,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:00:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2024-11-18 13:00:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:00:11,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416123118] [2024-11-18 13:00:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:11,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:00:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-18 13:00:12,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:00:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416123118] [2024-11-18 13:00:12,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416123118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:00:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608495846] [2024-11-18 13:00:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:12,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:00:12,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:00:12,129 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) [2024-11-18 13:00:12,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 13:00:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:12,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-18 13:00:12,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:00:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-18 13:00:12,314 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:00:12,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608495846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:00:12,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:00:12,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-18 13:00:12,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068287189] [2024-11-18 13:00:12,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:00:12,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 13:00:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:00:12,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 13:00:12,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:00:12,317 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:00:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:00:12,348 INFO L93 Difference]: Finished difference Result 201 states and 248 transitions. [2024-11-18 13:00:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 13:00:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2024-11-18 13:00:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:00:12,351 INFO L225 Difference]: With dead ends: 201 [2024-11-18 13:00:12,351 INFO L226 Difference]: Without dead ends: 117 [2024-11-18 13:00:12,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 13:00:12,353 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 13:00:12,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 13:00:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-18 13:00:12,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-18 13:00:12,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 87 states have internal predecessors, (98), 18 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (27), 20 states have call predecessors, (27), 18 states have call successors, (27) [2024-11-18 13:00:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 143 transitions. [2024-11-18 13:00:12,374 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 143 transitions. Word has length 72 [2024-11-18 13:00:12,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:00:12,375 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 143 transitions. [2024-11-18 13:00:12,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-18 13:00:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 143 transitions. [2024-11-18 13:00:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-18 13:00:12,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:00:12,378 INFO L215 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] [2024-11-18 13:00:12,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-18 13:00:12,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 13:00:12,579 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:00:12,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:00:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2024-11-18 13:00:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:00:12,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265953972] [2024-11-18 13:00:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:12,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:00:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 13:00:17,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:00:17,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265953972] [2024-11-18 13:00:17,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265953972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:00:17,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299159854] [2024-11-18 13:00:17,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:17,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:00:17,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:00:17,817 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) [2024-11-18 13:00:17,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 13:00:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:17,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 158 conjuncts are in the unsatisfiable core [2024-11-18 13:00:17,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:00:18,352 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-18 13:00:18,353 INFO L378 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 [2024-11-18 13:00:18,734 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-18 13:00:18,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-18 13:00:19,918 INFO L349 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2024-11-18 13:00:19,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 236 [2024-11-18 13:00:19,939 INFO L378 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 [2024-11-18 13:00:19,974 INFO L378 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 [2024-11-18 13:00:19,986 INFO L378 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 [2024-11-18 13:00:20,035 INFO L378 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 [2024-11-18 13:00:20,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:20,609 INFO L349 Elim1Store]: treesize reduction 68, result has 20.0 percent of original size [2024-11-18 13:00:20,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 420 treesize of output 419 [2024-11-18 13:00:20,759 INFO L378 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 [2024-11-18 13:00:20,984 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:20,985 INFO L378 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 33 treesize of output 11 [2024-11-18 13:00:22,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:22,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 1 [2024-11-18 13:00:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:22,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 1 [2024-11-18 13:00:23,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:23,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:23,985 INFO L349 Elim1Store]: treesize reduction 203, result has 0.5 percent of original size [2024-11-18 13:00:23,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 315 treesize of output 257 [2024-11-18 13:00:24,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:24,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:24,016 INFO L378 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 90 treesize of output 61 [2024-11-18 13:00:24,028 INFO L349 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2024-11-18 13:00:24,029 INFO L378 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 27 treesize of output 17 [2024-11-18 13:00:24,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2024-11-18 13:00:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:24,059 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2024-11-18 13:00:24,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2024-11-18 13:00:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-18 13:00:25,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 13:00:26,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299159854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:00:26,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-18 13:00:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 60 [2024-11-18 13:00:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39223935] [2024-11-18 13:00:26,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-18 13:00:26,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-18 13:00:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:00:26,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-18 13:00:26,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=4294, Unknown=6, NotChecked=0, Total=4556 [2024-11-18 13:00:26,139 INFO L87 Difference]: Start difference. First operand 117 states and 143 transitions. Second operand has 60 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 43 states have internal predecessors, (85), 17 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-18 13:00:33,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:00:33,021 INFO L93 Difference]: Finished difference Result 263 states and 319 transitions. [2024-11-18 13:00:33,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-18 13:00:33,022 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 43 states have internal predecessors, (85), 17 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 63 [2024-11-18 13:00:33,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:00:33,025 INFO L225 Difference]: With dead ends: 263 [2024-11-18 13:00:33,026 INFO L226 Difference]: Without dead ends: 200 [2024-11-18 13:00:33,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=722, Invalid=9984, Unknown=6, NotChecked=0, Total=10712 [2024-11-18 13:00:33,034 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 487 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 143 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 4129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-18 13:00:33,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 2499 Invalid, 4129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3984 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2024-11-18 13:00:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-18 13:00:33,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 150. [2024-11-18 13:00:33,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 1.201834862385321) internal successors, (131), 115 states have internal predecessors, (131), 21 states have call successors, (21), 11 states have call predecessors, (21), 17 states have return successors, (36), 23 states have call predecessors, (36), 21 states have call successors, (36) [2024-11-18 13:00:33,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2024-11-18 13:00:33,079 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 188 transitions. Word has length 63 [2024-11-18 13:00:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:00:33,080 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 188 transitions. [2024-11-18 13:00:33,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 49 states have (on average 1.7346938775510203) internal successors, (85), 43 states have internal predecessors, (85), 17 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-18 13:00:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 188 transitions. [2024-11-18 13:00:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 13:00:33,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:00:33,084 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 13:00:33,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 13:00:33,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:00:33,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:00:33,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:00:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2102607608, now seen corresponding path program 1 times [2024-11-18 13:00:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:00:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043727010] [2024-11-18 13:00:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:00:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-18 13:00:33,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:00:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043727010] [2024-11-18 13:00:33,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043727010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:00:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432807315] [2024-11-18 13:00:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:33,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:00:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:00:33,620 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) [2024-11-18 13:00:33,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 13:00:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:33,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-18 13:00:33,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:00:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-18 13:00:34,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 13:00:34,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432807315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 13:00:34,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 13:00:34,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-11-18 13:00:34,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309415049] [2024-11-18 13:00:34,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 13:00:34,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 13:00:34,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 13:00:34,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 13:00:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-18 13:00:34,246 INFO L87 Difference]: Start difference. First operand 150 states and 188 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-18 13:00:34,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 13:00:34,853 INFO L93 Difference]: Finished difference Result 312 states and 382 transitions. [2024-11-18 13:00:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 13:00:34,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 72 [2024-11-18 13:00:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 13:00:34,856 INFO L225 Difference]: With dead ends: 312 [2024-11-18 13:00:34,857 INFO L226 Difference]: Without dead ends: 156 [2024-11-18 13:00:34,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2024-11-18 13:00:34,862 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 169 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 13:00:34,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 246 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 13:00:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-11-18 13:00:34,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 134. [2024-11-18 13:00:34,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 104 states have internal predecessors, (116), 17 states have call successors, (17), 11 states have call predecessors, (17), 15 states have return successors, (26), 18 states have call predecessors, (26), 17 states have call successors, (26) [2024-11-18 13:00:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 159 transitions. [2024-11-18 13:00:34,890 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 159 transitions. Word has length 72 [2024-11-18 13:00:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 13:00:34,890 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 159 transitions. [2024-11-18 13:00:34,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-18 13:00:34,891 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 159 transitions. [2024-11-18 13:00:34,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 13:00:34,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 13:00:34,895 INFO L215 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] [2024-11-18 13:00:34,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 13:00:35,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:00:35,096 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 13:00:35,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 13:00:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1485354123, now seen corresponding path program 1 times [2024-11-18 13:00:35,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 13:00:35,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035213143] [2024-11-18 13:00:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 13:00:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-18 13:00:36,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 13:00:36,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035213143] [2024-11-18 13:00:36,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035213143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 13:00:36,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648677871] [2024-11-18 13:00:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 13:00:36,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 13:00:36,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 13:00:36,436 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) [2024-11-18 13:00:36,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 13:00:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 13:00:36,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 145 conjuncts are in the unsatisfiable core [2024-11-18 13:00:36,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 13:00:36,780 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-18 13:00:36,780 INFO L378 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 19 treesize of output 16 [2024-11-18 13:00:36,964 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-18 13:00:36,964 INFO L378 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 19 treesize of output 16 [2024-11-18 13:00:37,533 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-11-18 13:00:37,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 71 [2024-11-18 13:00:37,544 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-18 13:00:37,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 71 treesize of output 67 [2024-11-18 13:00:37,557 INFO L378 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 31 treesize of output 28 [2024-11-18 13:00:37,640 INFO L349 Elim1Store]: treesize reduction 33, result has 38.9 percent of original size [2024-11-18 13:00:37,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 79 [2024-11-18 13:00:37,649 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2024-11-18 13:00:37,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 79 treesize of output 75 [2024-11-18 13:00:37,658 INFO L378 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 35 treesize of output 30 [2024-11-18 13:00:37,672 INFO L349 Elim1Store]: treesize reduction 24, result has 25.0 percent of original size [2024-11-18 13:00:37,673 INFO L378 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 42 [2024-11-18 13:00:37,683 INFO L378 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 10 treesize of output 9 [2024-11-18 13:00:37,722 INFO L349 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2024-11-18 13:00:37,723 INFO L378 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 25 treesize of output 46 [2024-11-18 13:00:37,848 INFO L349 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2024-11-18 13:00:37,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2024-11-18 13:00:37,867 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:37,967 INFO L349 Elim1Store]: treesize reduction 38, result has 32.1 percent of original size [2024-11-18 13:00:37,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 91 treesize of output 104 [2024-11-18 13:00:37,986 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,022 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-11-18 13:00:38,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 72 treesize of output 56 [2024-11-18 13:00:38,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2024-11-18 13:00:38,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2024-11-18 13:00:38,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,164 INFO L349 Elim1Store]: treesize reduction 42, result has 36.4 percent of original size [2024-11-18 13:00:38,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 145 [2024-11-18 13:00:38,238 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,272 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2024-11-18 13:00:38,272 INFO L378 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 6 case distinctions, treesize of input 95 treesize of output 57 [2024-11-18 13:00:38,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 56 [2024-11-18 13:00:38,338 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,339 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2024-11-18 13:00:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,360 INFO L378 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 20 treesize of output 19 [2024-11-18 13:00:38,370 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,370 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,371 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2024-11-18 13:00:38,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,390 INFO L378 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 25 treesize of output 27 [2024-11-18 13:00:38,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 52 [2024-11-18 13:00:38,450 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,450 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 154 [2024-11-18 13:00:38,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,522 INFO L349 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2024-11-18 13:00:38,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2024-11-18 13:00:38,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 56 [2024-11-18 13:00:38,580 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,581 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:38,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2024-11-18 13:00:38,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:38,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2024-11-18 13:00:39,115 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-11-18 13:00:39,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 71 [2024-11-18 13:00:39,189 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:39,203 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-18 13:00:39,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 95 treesize of output 91 [2024-11-18 13:00:39,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:39,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 49 [2024-11-18 13:00:39,368 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:39,516 INFO L349 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2024-11-18 13:00:39,516 INFO L378 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 61 [2024-11-18 13:00:39,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-18 13:00:39,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:39,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:39,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:39,674 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-18 13:00:39,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 55 [2024-11-18 13:00:39,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 56 [2024-11-18 13:00:39,829 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:39,830 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:39,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2024-11-18 13:00:39,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:39,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:39,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:39,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 55 [2024-11-18 13:00:40,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 56 [2024-11-18 13:00:40,173 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:40,174 INFO L378 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 59 [2024-11-18 13:00:40,190 INFO L378 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 21 treesize of output 20 [2024-11-18 13:00:40,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:40,207 INFO L378 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 22 treesize of output 35 [2024-11-18 13:00:40,288 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-11-18 13:00:40,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 71 [2024-11-18 13:00:40,406 INFO L378 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 [2024-11-18 13:00:40,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 56 [2024-11-18 13:00:40,912 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:40,913 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:40,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 54 [2024-11-18 13:00:40,941 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:40,942 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:40,943 INFO L378 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 29 [2024-11-18 13:00:40,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:40,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:40,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:41,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2024-11-18 13:00:41,339 INFO L349 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2024-11-18 13:00:41,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2024-11-18 13:00:41,418 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:41,824 INFO L349 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2024-11-18 13:00:41,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 301 treesize of output 272 [2024-11-18 13:00:41,889 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-18 13:00:41,903 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2024-11-18 13:00:41,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 299 treesize of output 245 [2024-11-18 13:00:42,104 INFO L378 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 21 treesize of output 25 [2024-11-18 13:00:42,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-18 13:00:42,282 INFO L378 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 21 treesize of output 13 [2024-11-18 13:00:51,077 WARN L286 SmtUtils]: Spent 5.79s on a formula simplification. DAG size of input: 278 DAG size of output: 198 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-18 13:00:52,424 INFO L378 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 52 treesize of output 44 [2024-11-18 13:00:52,772 INFO L378 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 153 treesize of output 141 [2024-11-18 13:00:52,817 INFO L378 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 105 treesize of output 93 [2024-11-18 13:00:53,084 INFO L349 Elim1Store]: treesize reduction 46, result has 38.7 percent of original size [2024-11-18 13:00:53,085 INFO L378 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 29 treesize of output 46 [2024-11-18 13:00:53,088 INFO L378 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 71 treesize of output 55 [2024-11-18 13:00:53,518 INFO L378 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 51 treesize of output 43 [2024-11-18 13:01:28,931 WARN L286 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 308 DAG size of output: 303 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-18 13:01:33,983 WARN L851 $PredicateComparison]: unable to prove that (and (= |c_~#mutexes~0.offset| 0) (let ((.cse40 (select |c_#memory_$Pointer$#1.base| 3))) (let ((.cse13 (select .cse40 0))) (let ((.cse48 (store (select |c_old(#memory_$Pointer$#1.base)| .cse13) 0 |c_mutex_lock_#in~m#1.base|)) (.cse2 (select |c_#memory_$Pointer$#1.offset| 3))) (let ((.cse11 (select .cse2 0)) (.cse22 (select |c_old(#memory_$Pointer$#1.base)| 3)) (.cse16 (store |c_old(#memory_$Pointer$#1.base)| .cse13 .cse48))) (let ((.cse49 (select |c_#memory_$Pointer$#1.base| .cse13)) (.cse14 (select (select .cse16 3) 0)) (.cse4 (store |c_old(#memory_$Pointer$#1.base)| 3 (store .cse22 0 |c_mutex_lock_#in~m#1.base|))) (.cse8 (+ .cse11 4))) (let ((.cse23 (select .cse40 .cse8)) (.cse25 (select .cse2 .cse11)) (.cse5 (select .cse4 |c_mutex_lock_#in~m#1.base|)) (.cse6 (select |c_#memory_$Pointer$#1.base| |c_mutex_lock_#in~m#1.base|)) (.cse26 (= .cse8 0)) (.cse42 (select .cse2 (- 4))) (.cse33 (select .cse22 0)) (.cse7 (select |c_#memory_$Pointer$#1.offset| .cse14)) (.cse0 (= (select |c_old(#valid)| 3) 0)) (.cse24 (= |c_mutex_lock_#in~m#1.base| 3)) (.cse29 (= .cse11 0)) (.cse32 (select .cse40 4)) (.cse17 (select .cse49 .cse8)) (.cse18 (select .cse16 .cse14)) (.cse19 (select |c_#memory_$Pointer$#1.base| .cse14)) (.cse9 (= .cse14 .cse13)) (.cse21 (= (select |c_old(#valid)| .cse13) 0))) (or (and .cse0 (exists ((v_DerPreprocessor_33 (Array Int Int)) (v_DerPreprocessor_34 (Array Int Int))) (let ((.cse1 (+ (select v_DerPreprocessor_34 (- 4)) 4))) (and (= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_mutex_lock_#in~m#1.base| v_DerPreprocessor_33) 3 v_DerPreprocessor_34) |c_mutex_lock_#in~m#1.base|) .cse1) 4) 0) (= .cse2 (store v_DerPreprocessor_34 0 (- 4))) (= (select v_DerPreprocessor_34 0) 0) (= |c_#memory_$Pointer$#1.base| (let ((.cse3 (store .cse5 .cse1 (select .cse6 .cse1)))) (store (store |c_old(#memory_$Pointer$#1.base)| |c_mutex_lock_#in~m#1.base| .cse3) 3 (store (store (select (store .cse4 |c_mutex_lock_#in~m#1.base| .cse3) 3) (- 4) |c_mutex_lock_#in~m#1.base|) 0 3)))))))) (and (= (select .cse7 .cse8) 0) .cse9 (exists ((v_DerPreprocessor_19 (Array Int Int))) (let ((.cse20 (select (select (store |c_old(#memory_$Pointer$#1.offset)| .cse13 v_DerPreprocessor_19) 3) 0))) (let ((.cse10 (+ 4 .cse20))) (and (= (select .cse7 .cse10) .cse11) (= (let ((.cse12 (let ((.cse15 (store .cse18 .cse10 (select .cse19 .cse10)))) (store (store |c_old(#memory_$Pointer$#1.base)| .cse14 .cse15) .cse13 (store (store (select (store .cse16 .cse14 .cse15) .cse13) .cse11 .cse14) .cse8 .cse17))))) (store .cse12 3 (store (select .cse12 3) 0 .cse13))) |c_#memory_$Pointer$#1.base|) (not (= .cse11 .cse20)) (= (select .cse7 .cse11) .cse20))))) .cse21) (and (= 0 (select .cse2 .cse8)) (= |c_#memory_$Pointer$#1.base| (store |c_old(#memory_$Pointer$#1.base)| 3 (store (store (store .cse22 .cse11 3) .cse8 .cse23) 0 3))) .cse0 .cse24 (= .cse25 .cse11)) (and (not .cse24) .cse0 (not .cse26) (or (let ((.cse28 (+ .cse25 4))) (and (= |c_#memory_$Pointer$#1.base| (let ((.cse27 (store .cse5 .cse28 (select .cse6 .cse28)))) (store (store |c_old(#memory_$Pointer$#1.base)| |c_mutex_lock_#in~m#1.base| .cse27) 3 (store (store (store (select (store .cse4 |c_mutex_lock_#in~m#1.base| .cse27) 3) .cse11 |c_mutex_lock_#in~m#1.base|) .cse8 .cse23) 0 3)))) (exists ((v_DerPreprocessor_37 (Array Int Int)) (v_DerPreprocessor_38 (Array Int Int))) (and (= .cse2 (store (store (store (select (store (store |c_#memory_$Pointer$#1.offset| 3 v_DerPreprocessor_37) |c_mutex_lock_#in~m#1.base| v_DerPreprocessor_38) 3) .cse11 .cse25) .cse8 0) 0 .cse11)) (= (select v_DerPreprocessor_38 .cse28) .cse11))) (not .cse29))) (exists ((v_DerPreprocessor_37 (Array Int Int)) (v_DerPreprocessor_38 (Array Int Int)) (v_arrayElimCell_75 Int)) (let ((.cse30 (+ 4 v_arrayElimCell_75))) (and (= .cse2 (store (store (select (store (store |c_#memory_$Pointer$#1.offset| 3 v_DerPreprocessor_37) |c_mutex_lock_#in~m#1.base| v_DerPreprocessor_38) 3) 4 0) 0 0)) (= (select v_DerPreprocessor_38 .cse30) 0) (= |c_#memory_$Pointer$#1.base| (let ((.cse31 (store .cse5 .cse30 (select .cse6 .cse30)))) (store (store |c_old(#memory_$Pointer$#1.base)| |c_mutex_lock_#in~m#1.base| .cse31) 3 (store (store (select (store .cse4 |c_mutex_lock_#in~m#1.base| .cse31) 3) 4 .cse32) 0 3))))))))) (and (= .cse33 3) (exists ((|mutex_lock_ldv_list_add_~new#1.base| Int) (v_DerPreprocessor_19 (Array Int Int))) (let ((.cse35 (select (select (store |c_old(#memory_$Pointer$#1.offset)| |mutex_lock_ldv_list_add_~new#1.base| v_DerPreprocessor_19) 3) 0))) (let ((.cse34 (select |c_#memory_$Pointer$#1.offset| |mutex_lock_ldv_list_add_~new#1.base|)) (.cse36 (+ .cse35 4))) (and (= (select |c_old(#valid)| |mutex_lock_ldv_list_add_~new#1.base|) 0) (= (select .cse34 .cse8) 0) (= .cse35 (select .cse34 .cse11)) (= .cse11 (select .cse2 .cse36)) (not (= |mutex_lock_ldv_list_add_~new#1.base| 3)) (= |c_#memory_$Pointer$#1.base| (let ((.cse39 (store |c_old(#memory_$Pointer$#1.base)| |mutex_lock_ldv_list_add_~new#1.base| (store (select |c_old(#memory_$Pointer$#1.base)| |mutex_lock_ldv_list_add_~new#1.base|) 0 |c_mutex_lock_#in~m#1.base|)))) (let ((.cse38 (store (select .cse39 3) .cse36 (select .cse40 .cse36)))) (let ((.cse37 (store (store (select (store .cse39 3 .cse38) |mutex_lock_ldv_list_add_~new#1.base|) .cse11 3) .cse8 (select (select |c_#memory_$Pointer$#1.base| |mutex_lock_ldv_list_add_~new#1.base|) .cse8)))) (store (store |c_old(#memory_$Pointer$#1.base)| |mutex_lock_ldv_list_add_~new#1.base| .cse37) 3 (store (select (store (store |c_old(#memory_$Pointer$#1.base)| 3 .cse38) |mutex_lock_ldv_list_add_~new#1.base| .cse37) 3) 0 |mutex_lock_ldv_list_add_~new#1.base|))))))))))) (let ((.cse41 (+ .cse42 4))) (and .cse0 (= |c_#memory_$Pointer$#1.base| (store |c_old(#memory_$Pointer$#1.base)| 3 (store (store (store .cse22 .cse41 (select .cse40 .cse41)) (- 4) 3) 0 3))) (= (+ (select .cse2 .cse41) 4) 0) .cse26 .cse24)) (and .cse0 (= |c_#memory_$Pointer$#1.base| (store |c_old(#memory_$Pointer$#1.base)| 3 (store (store .cse22 (- 4) 3) 0 3))) .cse26 (= 0 (+ .cse42 8)) .cse24) (and .cse9 (exists ((v_DerPreprocessor_20 (Array Int Int)) (v_DerPreprocessor_21 (Array Int Int)) (v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_22 (Array Int Int))) (let ((.cse45 (select (select (store |c_old(#memory_$Pointer$#1.offset)| .cse13 v_DerPreprocessor_19) 3) 0)) (.cse44 (store (store (store |c_#memory_$Pointer$#1.offset| .cse14 v_DerPreprocessor_20) 3 v_DerPreprocessor_21) .cse13 v_DerPreprocessor_22))) (let ((.cse43 (select .cse44 .cse14)) (.cse46 (+ 4 .cse45))) (and (= v_DerPreprocessor_20 .cse43) (= (select |c_#memory_$Pointer$#1.offset| .cse33) (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse33 v_DerPreprocessor_20) 3 v_DerPreprocessor_21) .cse13 v_DerPreprocessor_22) .cse33)) (= .cse2 (store (select .cse44 3) 0 .cse45)) (= (select .cse43 .cse46) 0) (= .cse45 (select .cse43 .cse45)) (= (let ((.cse47 (store |c_old(#memory_$Pointer$#1.base)| .cse13 (store (store .cse48 .cse45 .cse14) .cse46 (select .cse49 .cse46))))) (store .cse47 3 (store (select .cse47 3) 0 .cse13))) |c_#memory_$Pointer$#1.base|))))) .cse21) (and (exists ((v_DerPreprocessor_19 (Array Int Int))) (let ((.cse53 (select (select (store |c_old(#memory_$Pointer$#1.offset)| .cse13 v_DerPreprocessor_19) 3) 0))) (let ((.cse52 (+ 8 .cse53)) (.cse50 (+ 4 .cse53))) (and (= .cse50 .cse11) (= (let ((.cse51 (store |c_old(#memory_$Pointer$#1.base)| .cse13 (store (store .cse48 .cse50 .cse14) .cse52 (select .cse49 .cse52))))) (store .cse51 3 (store (select .cse51 3) 0 .cse13))) |c_#memory_$Pointer$#1.base|) (= (select .cse7 .cse52) 0) (= (select .cse7 .cse50) .cse53))))) .cse9 .cse21) (and .cse0 .cse24 .cse29 (exists ((v_arrayElimCell_80 Int)) (let ((.cse54 (+ 4 v_arrayElimCell_80))) (and (= (select .cse2 .cse54) 0) (= |c_#memory_$Pointer$#1.base| (store |c_old(#memory_$Pointer$#1.base)| 3 (store (store (store .cse22 .cse54 (select .cse40 .cse54)) 4 .cse32) 0 3)))))) (= (select .cse2 4) 0)) (and (exists ((v_DerPreprocessor_19 (Array Int Int)) (v_DerPreprocessor_37 (Array Int Int)) (v_DerPreprocessor_38 (Array Int Int)) (v_DerPreprocessor_36 (Array Int Int))) (let ((.cse59 (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse13 v_DerPreprocessor_36) 3 v_DerPreprocessor_37) .cse14 v_DerPreprocessor_38) .cse13)) (.cse60 (select (select (store |c_old(#memory_$Pointer$#1.offset)| .cse13 v_DerPreprocessor_19) 3) 0))) (let ((.cse55 (+ 4 .cse60)) (.cse58 (store (store .cse59 .cse11 .cse60) .cse8 0))) (and (= .cse11 (select v_DerPreprocessor_38 .cse55)) (= (let ((.cse56 (let ((.cse57 (store .cse18 .cse55 (select .cse19 .cse55)))) (store (store |c_old(#memory_$Pointer$#1.base)| .cse14 .cse57) .cse13 (store (store (select (store .cse16 .cse14 .cse57) .cse13) .cse11 .cse14) .cse8 .cse17))))) (store .cse56 3 (store (select .cse56 3) 0 .cse13))) |c_#memory_$Pointer$#1.base|) (= .cse2 (store (select (store (store (store |c_#memory_$Pointer$#1.offset| 3 v_DerPreprocessor_37) .cse14 v_DerPreprocessor_38) .cse13 .cse58) 3) 0 .cse11)) (= (select |c_#memory_$Pointer$#1.offset| .cse13) .cse58) (= v_DerPreprocessor_36 .cse59))))) (not .cse9) .cse21)))))))) (= 3 |c_~#mutexes~0.base|)) is different from false