./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 3289d67d 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.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:28:05,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:28:05,407 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:28:05,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:28:05,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:28:05,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:28:05,454 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:28:05,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:28:05,456 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:28:05,459 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:28:05,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:28:05,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:28:05,460 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:28:05,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:28:05,461 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:28:05,461 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:28:05,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:28:05,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:28:05,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:28:05,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:28:05,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:28:05,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:28:05,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:28:05,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:28:05,466 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:28:05,466 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:28:05,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:28:05,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:28:05,467 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:28:05,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:28:05,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:28:05,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:28:05,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:28:05,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:28:05,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:28:05,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:28:05,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:28:05,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:28:05,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:28:05,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:28:05,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:28:05,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:28:05,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 [2024-11-16 06:28:05,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:28:05,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:28:05,765 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:28:05,767 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:28:05,767 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:28:05,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-16 06:28:07,276 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:28:07,521 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:28:07,521 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-16 06:28:07,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e93118d2/1ffce21936394c618f602a540f66c2b3/FLAG39ba57174 [2024-11-16 06:28:07,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e93118d2/1ffce21936394c618f602a540f66c2b3 [2024-11-16 06:28:07,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:28:07,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:28:07,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:28:07,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:28:07,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:28:07,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:28:07" (1/1) ... [2024-11-16 06:28:07,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d98427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:07, skipping insertion in model container [2024-11-16 06:28:07,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:28:07" (1/1) ... [2024-11-16 06:28:07,617 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:28:08,015 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] [2024-11-16 06:28:08,023 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] [2024-11-16 06:28:08,028 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] [2024-11-16 06:28:08,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:28:08,041 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:28:08,101 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] [2024-11-16 06:28:08,105 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] [2024-11-16 06:28:08,105 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] [2024-11-16 06:28:08,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:28:08,138 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:28:08,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08 WrapperNode [2024-11-16 06:28:08,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:28:08,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:28:08,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:28:08,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:28:08,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,168 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,192 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 139 [2024-11-16 06:28:08,192 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:28:08,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:28:08,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:28:08,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:28:08,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,206 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,234 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]. [2024-11-16 06:28:08,235 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,246 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,253 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:28:08,259 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:28:08,259 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:28:08,259 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:28:08,260 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (1/1) ... [2024-11-16 06:28:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:28:08,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:28:08,302 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) [2024-11-16 06:28:08,305 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 [2024-11-16 06:28:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-16 06:28:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-16 06:28:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-16 06:28:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-16 06:28:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 06:28:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-16 06:28:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-16 06:28:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:28:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 06:28:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 06:28:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-16 06:28:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-16 06:28:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 06:28:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 06:28:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:28:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-16 06:28:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-16 06:28:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:28:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:28:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-11-16 06:28:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-11-16 06:28:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:28:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:28:08,497 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:28:08,499 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:28:08,715 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L663: havoc ldv_set_empty_#t~ret31#1; [2024-11-16 06:28:08,715 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L620: havoc ldv_list_empty_#t~mem10#1.base, ldv_list_empty_#t~mem10#1.offset; [2024-11-16 06:28:08,786 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-16 06:28:08,786 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:28:08,803 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:28:08,803 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:28:08,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:28:08 BoogieIcfgContainer [2024-11-16 06:28:08,804 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:28:08,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:28:08,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:28:08,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:28:08,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:28:07" (1/3) ... [2024-11-16 06:28:08,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cd45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:28:08, skipping insertion in model container [2024-11-16 06:28:08,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:28:08" (2/3) ... [2024-11-16 06:28:08,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39cd45c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:28:08, skipping insertion in model container [2024-11-16 06:28:08,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:28:08" (3/3) ... [2024-11-16 06:28:08,819 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2024-11-16 06:28:08,832 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:28:08,833 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-16 06:28:08,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:28:08,919 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;@45b4d6da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:28:08,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-16 06:28:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 57 states have internal predecessors, (68), 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) [2024-11-16 06:28:08,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 06:28:08,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:08,929 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] [2024-11-16 06:28:08,930 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:08,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash -377942166, now seen corresponding path program 1 times [2024-11-16 06:28:08,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:08,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882287288] [2024-11-16 06:28:08,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:08,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:28:09,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:28:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:28:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 06:28:09,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:09,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882287288] [2024-11-16 06:28:09,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882287288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:28:09,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:28:09,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:28:09,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61626785] [2024-11-16 06:28:09,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:28:09,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:28:09,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:09,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:28:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:28:09,268 INFO L87 Difference]: Start difference. First operand has 74 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 57 states have internal predecessors, (68), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 06:28:09,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:09,457 INFO L93 Difference]: Finished difference Result 153 states and 199 transitions. [2024-11-16 06:28:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:28:09,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-16 06:28:09,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:09,470 INFO L225 Difference]: With dead ends: 153 [2024-11-16 06:28:09,471 INFO L226 Difference]: Without dead ends: 78 [2024-11-16 06:28:09,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:28:09,480 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:09,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 74 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:28:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-16 06:28:09,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2024-11-16 06:28:09,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 47 states have (on average 1.148936170212766) internal successors, (54), 49 states have internal predecessors, (54), 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) [2024-11-16 06:28:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 76 transitions. [2024-11-16 06:28:09,531 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 76 transitions. Word has length 28 [2024-11-16 06:28:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:09,531 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 76 transitions. [2024-11-16 06:28:09,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-16 06:28:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 76 transitions. [2024-11-16 06:28:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 06:28:09,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:09,533 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, 1] [2024-11-16 06:28:09,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:28:09,534 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:09,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1391067828, now seen corresponding path program 1 times [2024-11-16 06:28:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:09,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127454637] [2024-11-16 06:28:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:28:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:28:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:28:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 06:28:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127454637] [2024-11-16 06:28:09,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127454637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:28:09,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:28:09,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 06:28:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346039626] [2024-11-16 06:28:09,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:28:09,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:28:09,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:09,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:28:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:28:09,776 INFO L87 Difference]: Start difference. First operand 66 states and 76 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-16 06:28:10,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:10,021 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2024-11-16 06:28:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:28:10,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 29 [2024-11-16 06:28:10,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:10,024 INFO L225 Difference]: With dead ends: 84 [2024-11-16 06:28:10,024 INFO L226 Difference]: Without dead ends: 82 [2024-11-16 06:28:10,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-16 06:28:10,029 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 39 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:10,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 141 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:28:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-16 06:28:10,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2024-11-16 06:28:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.14) internal successors, (57), 52 states have internal predecessors, (57), 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) [2024-11-16 06:28:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2024-11-16 06:28:10,051 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 29 [2024-11-16 06:28:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:10,052 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2024-11-16 06:28:10,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-16 06:28:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2024-11-16 06:28:10,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 06:28:10,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:10,053 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, 1] [2024-11-16 06:28:10,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:28:10,053 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:10,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:10,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1071633804, now seen corresponding path program 1 times [2024-11-16 06:28:10,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:10,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329787209] [2024-11-16 06:28:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:10,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:10,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:28:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:10,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:28:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:10,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 06:28:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:10,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 06:28:10,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:10,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329787209] [2024-11-16 06:28:10,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329787209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:28:10,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:28:10,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 06:28:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631149582] [2024-11-16 06:28:10,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:28:10,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:28:10,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:10,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:28:10,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:28:10,495 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 06:28:11,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:28:11,115 INFO L93 Difference]: Finished difference Result 210 states and 263 transitions. [2024-11-16 06:28:11,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 06:28:11,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-16 06:28:11,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:28:11,118 INFO L225 Difference]: With dead ends: 210 [2024-11-16 06:28:11,118 INFO L226 Difference]: Without dead ends: 148 [2024-11-16 06:28:11,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:28:11,123 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 130 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:28:11,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 164 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:28:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-16 06:28:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2024-11-16 06:28:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 96 states have internal predecessors, (106), 18 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (29), 18 states have call predecessors, (29), 18 states have call successors, (29) [2024-11-16 06:28:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2024-11-16 06:28:11,159 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 29 [2024-11-16 06:28:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:28:11,160 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2024-11-16 06:28:11,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-16 06:28:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2024-11-16 06:28:11,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 06:28:11,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:28:11,164 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-16 06:28:11,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 06:28:11,164 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:28:11,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:28:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -200750669, now seen corresponding path program 1 times [2024-11-16 06:28:11,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:28:11,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561456759] [2024-11-16 06:28:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:11,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:28:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:12,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:28:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:12,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:28:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:12,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:28:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:13,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:28:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:13,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:28:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:13,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 06:28:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:13,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 06:28:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-16 06:28:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 06:28:14,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:28:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561456759] [2024-11-16 06:28:14,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561456759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:28:14,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908393517] [2024-11-16 06:28:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:28:14,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:28:14,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:28:14,440 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) [2024-11-16 06:28:14,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 06:28:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:28:14,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 154 conjuncts are in the unsatisfiable core [2024-11-16 06:28:14,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:28:14,987 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-16 06:28:14,988 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 17 treesize of output 21 [2024-11-16 06:28:15,338 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-16 06:28:15,339 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 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-16 06:28:16,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 37 [2024-11-16 06:28:16,375 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 41 treesize of output 38 [2024-11-16 06:28:16,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 37 [2024-11-16 06:28:16,418 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 41 treesize of output 38 [2024-11-16 06:28:16,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 44 [2024-11-16 06:28:16,460 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 65 treesize of output 57 [2024-11-16 06:28:16,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 44 [2024-11-16 06:28:16,509 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 65 treesize of output 57 [2024-11-16 06:28:16,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 51 [2024-11-16 06:28:16,554 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 65 treesize of output 57 [2024-11-16 06:28:18,385 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 7 treesize of output 3 [2024-11-16 06:28:18,394 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 [2024-11-16 06:28:18,402 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 7 treesize of output 3 [2024-11-16 06:28:18,408 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 [2024-11-16 06:28:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:28:22,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 70 [2024-11-16 06:28:23,009 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-16 06:28:23,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 20 [2024-11-16 06:28:23,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-16 06:28:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 06:28:25,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:28:27,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908393517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:28:27,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-16 06:28:27,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61 [2024-11-16 06:28:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924218525] [2024-11-16 06:28:27,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-16 06:28:27,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-16 06:28:27,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:28:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-16 06:28:27,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4311, Unknown=9, NotChecked=0, Total=4556 [2024-11-16 06:28:27,326 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 61 states, 50 states have (on average 1.8) internal successors, (90), 42 states have internal predecessors, (90), 16 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-16 06:28:36,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:29:05,136 WARN L286 SmtUtils]: Spent 17.16s on a formula simplification. DAG size of input: 148 DAG size of output: 151 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-16 06:29:18,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-16 06:29:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:29:36,304 INFO L93 Difference]: Finished difference Result 287 states and 346 transitions. [2024-11-16 06:29:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-16 06:29:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 50 states have (on average 1.8) internal successors, (90), 42 states have internal predecessors, (90), 16 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 66 [2024-11-16 06:29:36,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:29:36,308 INFO L225 Difference]: With dead ends: 287 [2024-11-16 06:29:36,308 INFO L226 Difference]: Without dead ends: 213 [2024-11-16 06:29:36,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3244 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=909, Invalid=11729, Unknown=18, NotChecked=0, Total=12656 [2024-11-16 06:29:36,312 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 658 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 197 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.8s IncrementalHoareTripleChecker+Time [2024-11-16 06:29:36,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1100 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 3866 Invalid, 12 Unknown, 0 Unchecked, 36.8s Time] [2024-11-16 06:29:36,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-16 06:29:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 162. [2024-11-16 06:29:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 129 states have internal predecessors, (146), 20 states have call successors, (20), 12 states have call predecessors, (20), 18 states have return successors, (34), 20 states have call predecessors, (34), 20 states have call successors, (34) [2024-11-16 06:29:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 200 transitions. [2024-11-16 06:29:36,339 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 200 transitions. Word has length 66 [2024-11-16 06:29:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:29:36,339 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 200 transitions. [2024-11-16 06:29:36,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 50 states have (on average 1.8) internal successors, (90), 42 states have internal predecessors, (90), 16 states have call successors, (18), 12 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-16 06:29:36,340 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 200 transitions. [2024-11-16 06:29:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 06:29:36,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:29:36,342 INFO L215 NwaCegarLoop]: trace histogram [5, 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] [2024-11-16 06:29:36,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 06:29:36,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:29:36,546 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:29:36,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:29:36,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1660132124, now seen corresponding path program 1 times [2024-11-16 06:29:36,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:29:36,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326634939] [2024-11-16 06:29:36,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:29:36,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:29:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:29:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:29:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:29:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:29:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:29:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 06:29:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:29:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:29:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 06:29:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-16 06:29:36,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:29:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326634939] [2024-11-16 06:29:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326634939] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:29:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090701926] [2024-11-16 06:29:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:29:36,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:29:36,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:29:36,732 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) [2024-11-16 06:29:36,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 06:29:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:36,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 06:29:36,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:29:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-16 06:29:36,924 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:29:36,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090701926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:29:36,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:29:36,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-16 06:29:36,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738423831] [2024-11-16 06:29:36,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:29:36,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:29:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:29:36,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:29:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:29:36,927 INFO L87 Difference]: Start difference. First operand 162 states and 200 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-16 06:29:36,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:29:36,962 INFO L93 Difference]: Finished difference Result 295 states and 367 transitions. [2024-11-16 06:29:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:29:36,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 77 [2024-11-16 06:29:36,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:29:36,966 INFO L225 Difference]: With dead ends: 295 [2024-11-16 06:29:36,969 INFO L226 Difference]: Without dead ends: 172 [2024-11-16 06:29:36,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:29:36,971 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 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 [2024-11-16 06:29:36,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:29:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-16 06:29:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2024-11-16 06:29:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 135 states have internal predecessors, (152), 20 states have call successors, (20), 12 states have call predecessors, (20), 20 states have return successors, (37), 22 states have call predecessors, (37), 20 states have call successors, (37) [2024-11-16 06:29:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 209 transitions. [2024-11-16 06:29:37,009 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 209 transitions. Word has length 77 [2024-11-16 06:29:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:29:37,010 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 209 transitions. [2024-11-16 06:29:37,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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) [2024-11-16 06:29:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 209 transitions. [2024-11-16 06:29:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 06:29:37,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:29:37,017 INFO L215 NwaCegarLoop]: trace histogram [5, 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] [2024-11-16 06:29:37,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 06:29:37,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:29:37,218 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:29:37,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:29:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1083987044, now seen corresponding path program 1 times [2024-11-16 06:29:37,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:29:37,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692269244] [2024-11-16 06:29:37,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:29:37,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:29:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:29:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:29:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:29:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:29:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:29:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 06:29:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 06:29:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 06:29:37,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 06:29:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:29:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:29:37,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692269244] [2024-11-16 06:29:37,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692269244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:29:37,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839471970] [2024-11-16 06:29:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:29:37,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:29:37,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:29:37,582 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) [2024-11-16 06:29:37,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 06:29:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:37,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 06:29:37,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:29:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:29:38,193 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:29:38,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839471970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:29:38,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:29:38,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-11-16 06:29:38,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103195867] [2024-11-16 06:29:38,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:29:38,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 06:29:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:29:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 06:29:38,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:29:38,195 INFO L87 Difference]: Start difference. First operand 170 states and 209 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2024-11-16 06:29:38,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:29:38,843 INFO L93 Difference]: Finished difference Result 350 states and 422 transitions. [2024-11-16 06:29:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 06:29:38,844 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 77 [2024-11-16 06:29:38,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:29:38,845 INFO L225 Difference]: With dead ends: 350 [2024-11-16 06:29:38,846 INFO L226 Difference]: Without dead ends: 175 [2024-11-16 06:29:38,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-16 06:29:38,848 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 173 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 06:29:38,849 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 280 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 06:29:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-16 06:29:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 164. [2024-11-16 06:29:38,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 127 states have (on average 1.1811023622047243) internal successors, (150), 133 states have internal predecessors, (150), 16 states have call successors, (16), 12 states have call predecessors, (16), 18 states have return successors, (27), 18 states have call predecessors, (27), 16 states have call successors, (27) [2024-11-16 06:29:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2024-11-16 06:29:38,889 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 77 [2024-11-16 06:29:38,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:29:38,889 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2024-11-16 06:29:38,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2024-11-16 06:29:38,889 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2024-11-16 06:29:38,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 06:29:38,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:29:38,891 INFO L215 NwaCegarLoop]: trace histogram [4, 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] [2024-11-16 06:29:38,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 06:29:39,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:29:39,095 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:29:39,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:29:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash -744643325, now seen corresponding path program 1 times [2024-11-16 06:29:39,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:29:39,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227176122] [2024-11-16 06:29:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:29:39,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:29:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:40,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-16 06:29:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:40,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 06:29:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:29:40,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 06:29:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat