./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 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'd82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0.3.0-?-4f9af40 [2024-11-06 22:19:33,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:19:33,959 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:19:33,965 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:19:33,966 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:19:33,992 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:19:33,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:19:33,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:19:33,995 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:19:33,995 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:19:33,996 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:19:33,996 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:19:33,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:19:33,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:19:33,997 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:19:33,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:19:33,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:19:33,999 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:19:33,999 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:19:33,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:19:33,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:19:33,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:19:34,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:19:34,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:19:34,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:19:34,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:19:34,001 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 [2024-11-06 22:19:34,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:19:34,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:19:34,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:19:34,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:19:34,304 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:19:34,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-06 22:19:35,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:19:35,871 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:19:35,872 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-06 22:19:35,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f2138c76f/2e3b5239b13d4aa9ac9533f60d72bfaf/FLAG8f14062f8 [2024-11-06 22:19:35,913 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f2138c76f/2e3b5239b13d4aa9ac9533f60d72bfaf [2024-11-06 22:19:35,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:19:35,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:19:35,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:19:35,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:19:35,924 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:19:35,925 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:35" (1/1) ... [2024-11-06 22:19:35,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33d40639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:35, skipping insertion in model container [2024-11-06 22:19:35,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:35" (1/1) ... [2024-11-06 22:19:35,967 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:19:36,225 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2024-11-06 22:19:36,229 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2024-11-06 22:19:36,230 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2024-11-06 22:19:36,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:19:36,242 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:19:36,297 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2024-11-06 22:19:36,302 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2024-11-06 22:19:36,302 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2024-11-06 22:19:36,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:19:36,341 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:19:36,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36 WrapperNode [2024-11-06 22:19:36,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:19:36,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:19:36,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:19:36,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:19:36,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,397 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 140 [2024-11-06 22:19:36,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:19:36,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:19:36,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:19:36,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:19:36,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,451 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]. [2024-11-06 22:19:36,455 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,455 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,472 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,477 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:19:36,480 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:19:36,480 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:19:36,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:19:36,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (1/1) ... [2024-11-06 22:19:36,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:19:36,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:19:36,520 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-06 22:19:36,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-06 22:19:36,544 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-06 22:19:36,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-06 22:19:36,545 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-06 22:19:36,545 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-06 22:19:36,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-06 22:19:36,545 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-06 22:19:36,546 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-06 22:19:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:19:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-06 22:19:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-06 22:19:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-06 22:19:36,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-06 22:19:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-06 22:19:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-06 22:19:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 22:19:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-06 22:19:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-06 22:19:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:19:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 22:19:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-11-06 22:19:36,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-11-06 22:19:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:19:36,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:19:36,671 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:19:36,673 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:19:36,950 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-06 22:19:36,950 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:19:36,963 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:19:36,963 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-06 22:19:36,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:36 BoogieIcfgContainer [2024-11-06 22:19:36,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:19:36,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:19:36,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:19:36,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:19:36,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:35" (1/3) ... [2024-11-06 22:19:36,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e69096c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:36, skipping insertion in model container [2024-11-06 22:19:36,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:36" (2/3) ... [2024-11-06 22:19:36,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e69096c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:36, skipping insertion in model container [2024-11-06 22:19:36,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:36" (3/3) ... [2024-11-06 22:19:36,972 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2024-11-06 22:19:36,983 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:19:36,984 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-06 22:19:37,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:19:37,035 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;@3631ef69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:19:37,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-06 22:19:37,039 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) [2024-11-06 22:19:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 22:19:37,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:19:37,047 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] [2024-11-06 22:19:37,047 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:19:37,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:19:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2024-11-06 22:19:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:19:37,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894474215] [2024-11-06 22:19:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:19:37,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:19:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 22:19:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-06 22:19:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 22:19:37,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:19:37,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894474215] [2024-11-06 22:19:37,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894474215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:19:37,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:19:37,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 22:19:37,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981228964] [2024-11-06 22:19:37,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:19:37,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 22:19:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:19:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 22:19:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:19:37,324 INFO L87 Difference]: Start difference. First operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 22:19:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:19:37,469 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2024-11-06 22:19:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 22:19:37,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-06 22:19:37,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:19:37,476 INFO L225 Difference]: With dead ends: 147 [2024-11-06 22:19:37,476 INFO L226 Difference]: Without dead ends: 76 [2024-11-06 22:19:37,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:19:37,481 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:19:37,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 74 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:19:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-06 22:19:37,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2024-11-06 22:19:37,514 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) [2024-11-06 22:19:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-06 22:19:37,522 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2024-11-06 22:19:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:19:37,523 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-06 22:19:37,523 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), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-06 22:19:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-06 22:19:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 22:19:37,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:19:37,526 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] [2024-11-06 22:19:37,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:19:37,526 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:19:37,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:19:37,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2024-11-06 22:19:37,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:19:37,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387387285] [2024-11-06 22:19:37,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:19:37,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:19:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 22:19:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-06 22:19:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 22:19:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:19:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387387285] [2024-11-06 22:19:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387387285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:19:37,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:19:37,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-06 22:19:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007812684] [2024-11-06 22:19:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:19:37,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-06 22:19:37,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:19:37,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-06 22:19:37,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:19:37,763 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:19:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:19:37,942 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2024-11-06 22:19:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-06 22:19:37,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-06 22:19:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:19:37,944 INFO L225 Difference]: With dead ends: 82 [2024-11-06 22:19:37,944 INFO L226 Difference]: Without dead ends: 80 [2024-11-06 22:19:37,945 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 [2024-11-06 22:19:37,945 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:19:37,945 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 141 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:19:37,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-06 22:19:37,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2024-11-06 22:19:37,953 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) [2024-11-06 22:19:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2024-11-06 22:19:37,957 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2024-11-06 22:19:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:19:37,958 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2024-11-06 22:19:37,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:19:37,959 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2024-11-06 22:19:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-06 22:19:37,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:19:37,959 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] [2024-11-06 22:19:37,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-06 22:19:37,960 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:19:37,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:19:37,961 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2024-11-06 22:19:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:19:37,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484734802] [2024-11-06 22:19:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:19:37,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:19:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:38,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 22:19:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:38,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:38,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-06 22:19:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-06 22:19:38,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:19:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484734802] [2024-11-06 22:19:38,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484734802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:19:38,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:19:38,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 22:19:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513234466] [2024-11-06 22:19:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:19:38,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:19:38,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:19:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:19:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:19:38,347 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:19:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:19:38,904 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2024-11-06 22:19:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 22:19:38,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-06 22:19:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:19:38,906 INFO L225 Difference]: With dead ends: 206 [2024-11-06 22:19:38,906 INFO L226 Difference]: Without dead ends: 145 [2024-11-06 22:19:38,907 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 [2024-11-06 22:19:38,908 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 132 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 22:19:38,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 164 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 22:19:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-06 22:19:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2024-11-06 22:19:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 18 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (29), 18 states have call predecessors, (29), 18 states have call successors, (29) [2024-11-06 22:19:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2024-11-06 22:19:38,925 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2024-11-06 22:19:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:19:38,926 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2024-11-06 22:19:38,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-06 22:19:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2024-11-06 22:19:38,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-06 22:19:38,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:19:38,928 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] [2024-11-06 22:19:38,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 22:19:38,928 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:19:38,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:19:38,929 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2024-11-06 22:19:38,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:19:38,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517997900] [2024-11-06 22:19:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:19:38,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:19:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 22:19:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 22:19:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-06 22:19:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-06 22:19:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-06 22:19:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-06 22:19:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-06 22:19:39,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:19:39,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517997900] [2024-11-06 22:19:39,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517997900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:19:39,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035214764] [2024-11-06 22:19:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:19:39,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:19:39,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:19:39,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:19:39,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 22:19:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:39,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 22:19:39,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:19:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-06 22:19:39,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:19:39,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035214764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:19:39,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:19:39,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-06 22:19:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816737761] [2024-11-06 22:19:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:19:39,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 22:19:39,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:19:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 22:19:39,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:19:39,329 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-06 22:19:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:19:39,356 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2024-11-06 22:19:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 22:19:39,357 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 [2024-11-06 22:19:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:19:39,359 INFO L225 Difference]: With dead ends: 219 [2024-11-06 22:19:39,361 INFO L226 Difference]: Without dead ends: 126 [2024-11-06 22:19:39,362 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:19:39,363 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 [2024-11-06 22:19:39,363 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] [2024-11-06 22:19:39,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-06 22:19:39,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-06 22:19:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 96 states have internal predecessors, (107), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (30), 20 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-06 22:19:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2024-11-06 22:19:39,388 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2024-11-06 22:19:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:19:39,389 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2024-11-06 22:19:39,389 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) [2024-11-06 22:19:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2024-11-06 22:19:39,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-06 22:19:39,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:19:39,392 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] [2024-11-06 22:19:39,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 22:19:39,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:19:39,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:19:39,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:19:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2024-11-06 22:19:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:19:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435715270] [2024-11-06 22:19:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:19:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:19:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:41,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-06 22:19:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:41,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:41,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-06 22:19:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:42,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-06 22:19:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:42,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-06 22:19:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:42,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-06 22:19:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:42,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-06 22:19:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:43,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-06 22:19:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 22:19:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:19:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435715270] [2024-11-06 22:19:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435715270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:19:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136588175] [2024-11-06 22:19:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:19:43,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:19:43,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:19:43,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 22:19:43,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-06 22:19:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:19:43,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-11-06 22:19:43,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:19:43,771 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-06 22:19:43,772 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 12 treesize of output 14 [2024-11-06 22:19:44,074 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2024-11-06 22:19:44,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2024-11-06 22:19:44,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-06 22:19:44,879 INFO L349 Elim1Store]: treesize reduction 65, result has 12.2 percent of original size [2024-11-06 22:19:44,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 71 treesize of output 26 [2024-11-06 22:19:45,141 INFO L349 Elim1Store]: treesize reduction 172, result has 25.2 percent of original size [2024-11-06 22:19:45,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 101 treesize of output 65 [2024-11-06 22:19:46,725 INFO L349 Elim1Store]: treesize reduction 217, result has 38.9 percent of original size [2024-11-06 22:19:46,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 291 treesize of output 664 [2024-11-06 22:19:46,902 INFO L224 Elim1Store]: Index analysis took 120 ms [2024-11-06 22:19:47,188 INFO L349 Elim1Store]: treesize reduction 277, result has 6.1 percent of original size [2024-11-06 22:19:47,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 13 case distinctions, treesize of input 255 treesize of output 460 [2024-11-06 22:19:49,717 INFO L349 Elim1Store]: treesize reduction 1182, result has 12.2 percent of original size [2024-11-06 22:19:49,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 11 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 16 new quantified variables, introduced 51 case distinctions, treesize of input 723 treesize of output 2091 [2024-11-06 22:19:51,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-06 22:19:58,816 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 146 treesize of output 132 [2024-11-06 22:19:58,970 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-06 22:19:58,970 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 1 case distinctions, treesize of input 252 treesize of output 239 [2024-11-06 22:19:59,115 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 176 treesize of output 158 [2024-11-06 22:19:59,241 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 164 treesize of output 146 [2024-11-06 22:19:59,333 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-06 22:19:59,333 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 1 case distinctions, treesize of input 252 treesize of output 239 [2024-11-06 22:19:59,513 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 164 treesize of output 146 [2024-11-06 22:20:01,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 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 64 treesize of output 132 [2024-11-06 22:20:01,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:01,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:01,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:01,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:01,985 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 22:20:01,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 613 treesize of output 1301 [2024-11-06 22:20:03,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:04,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:04,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:04,023 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 22:20:04,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 613 treesize of output 1301 [2024-11-06 22:20:05,771 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 22:20:05,989 INFO L349 Elim1Store]: treesize reduction 184, result has 29.2 percent of original size [2024-11-06 22:20:05,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 511 treesize of output 1241 [2024-11-06 22:20:07,465 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 22:20:07,723 INFO L349 Elim1Store]: treesize reduction 184, result has 29.2 percent of original size [2024-11-06 22:20:07,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 19 case distinctions, treesize of input 511 treesize of output 1241 [2024-11-06 22:20:09,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:09,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:09,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:20:09,234 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 22:20:12,157 INFO L349 Elim1Store]: treesize reduction 136, result has 39.6 percent of original size [2024-11-06 22:20:12,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 13 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 11 new quantified variables, introduced 12 case distinctions, treesize of input 1332 treesize of output 2818