./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i --full-output --preprocessor.use.memory.slicer false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/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 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:07:02,091 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:07:02,201 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 23:07:02,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:07:02,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:07:02,237 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:07:02,241 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:07:02,241 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:07:02,242 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:07:02,247 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:07:02,248 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:07:02,248 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:07:02,249 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:07:02,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:07:02,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:07:02,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:07:02,251 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:07:02,251 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:07:02,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 23:07:02,252 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:07:02,252 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:07:02,253 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:07:02,253 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:07:02,253 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:07:02,253 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:07:02,254 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:07:02,254 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:07:02,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:07:02,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:07:02,255 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:07:02,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:07:02,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:07:02,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:07:02,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:07:02,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:07:02,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 23:07:02,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 23:07:02,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:07:02,258 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:07:02,258 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:07:02,258 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:07:02,258 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:07:02,259 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:07:02,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:07:02,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:07:02,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:07:02,497 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:07:02,497 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:07:02,498 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2023-11-22 23:07:03,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:07:03,940 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:07:03,941 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2023-11-22 23:07:03,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61880e3aa/0d55ec6b99ba4b33bb92d6aa9574fa58/FLAGdc3efc338 [2023-11-22 23:07:03,966 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61880e3aa/0d55ec6b99ba4b33bb92d6aa9574fa58 [2023-11-22 23:07:03,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:07:03,969 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:07:03,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:07:03,970 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:07:03,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:07:03,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:07:03" (1/1) ... [2023-11-22 23:07:03,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373f0fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:03, skipping insertion in model container [2023-11-22 23:07:03,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:07:03" (1/1) ... [2023-11-22 23:07:04,019 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:07:04,372 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-11-22 23:07:04,377 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-11-22 23:07:04,379 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-11-22 23:07:04,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:07:04,395 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:07:04,446 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-11-22 23:07:04,447 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-11-22 23:07:04,447 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-11-22 23:07:04,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:07:04,482 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:07:04,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04 WrapperNode [2023-11-22 23:07:04,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:07:04,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:07:04,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:07:04,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:07:04,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,533 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,556 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 138 [2023-11-22 23:07:04,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:07:04,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:07:04,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:07:04,557 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:07:04,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,585 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:07:04,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:07:04,586 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:07:04,586 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:07:04,587 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (1/1) ... [2023-11-22 23:07:04,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:07:04,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:07:04,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:07:04,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:07:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-22 23:07:04,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-22 23:07:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-22 23:07:04,662 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-22 23:07:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 23:07:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-22 23:07:04,662 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-22 23:07:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:07:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 23:07:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-11-22 23:07:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-11-22 23:07:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 23:07:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:07:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-22 23:07:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 23:07:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-11-22 23:07:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-11-22 23:07:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:07:04,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:07:04,766 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:07:04,768 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:07:05,027 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:07:05,102 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:07:05,102 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 23:07:05,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:07:05 BoogieIcfgContainer [2023-11-22 23:07:05,103 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:07:05,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:07:05,107 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:07:05,110 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:07:05,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:07:03" (1/3) ... [2023-11-22 23:07:05,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a241e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:07:05, skipping insertion in model container [2023-11-22 23:07:05,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:07:04" (2/3) ... [2023-11-22 23:07:05,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a241e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:07:05, skipping insertion in model container [2023-11-22 23:07:05,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:07:05" (3/3) ... [2023-11-22 23:07:05,114 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2023-11-22 23:07:05,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:07:05,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-22 23:07:05,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:07:05,172 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@4f73f025, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:07:05,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 23:07:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 35 states have (on average 1.4) internal successors, (49), 38 states have internal predecessors, (49), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-22 23:07:05,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 23:07:05,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:07:05,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:07:05,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:07:05,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:07:05,189 INFO L85 PathProgramCache]: Analyzing trace with hash 771595544, now seen corresponding path program 1 times [2023-11-22 23:07:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:07:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602771415] [2023-11-22 23:07:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:07:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:07:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:07:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:07:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:05,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:07:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:07:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:07:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602771415] [2023-11-22 23:07:05,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602771415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:07:05,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:07:05,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 23:07:05,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146233904] [2023-11-22 23:07:05,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:07:05,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 23:07:05,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:07:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 23:07:05,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:07:05,502 INFO L87 Difference]: Start difference. First operand has 55 states, 35 states have (on average 1.4) internal successors, (49), 38 states have internal predecessors, (49), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-22 23:07:05,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:07:05,671 INFO L93 Difference]: Finished difference Result 115 states and 161 transitions. [2023-11-22 23:07:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 23:07:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 24 [2023-11-22 23:07:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:07:05,680 INFO L225 Difference]: With dead ends: 115 [2023-11-22 23:07:05,680 INFO L226 Difference]: Without dead ends: 60 [2023-11-22 23:07:05,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 23:07:05,689 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:07:05,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 43 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:07:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-22 23:07:05,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2023-11-22 23:07:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-22 23:07:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2023-11-22 23:07:05,747 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 24 [2023-11-22 23:07:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:07:05,748 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2023-11-22 23:07:05,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-22 23:07:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2023-11-22 23:07:05,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 23:07:05,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:07:05,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:07:05,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 23:07:05,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:07:05,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:07:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash -85566308, now seen corresponding path program 1 times [2023-11-22 23:07:05,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:07:05,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496934965] [2023-11-22 23:07:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:07:05,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:07:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:07:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:07:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:07:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:07:06,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:07:06,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496934965] [2023-11-22 23:07:06,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496934965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:07:06,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:07:06,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 23:07:06,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279326230] [2023-11-22 23:07:06,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:07:06,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:07:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:07:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:07:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:07:06,012 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:07:06,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:07:06,182 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2023-11-22 23:07:06,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 23:07:06,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 24 [2023-11-22 23:07:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:07:06,184 INFO L225 Difference]: With dead ends: 66 [2023-11-22 23:07:06,184 INFO L226 Difference]: Without dead ends: 64 [2023-11-22 23:07:06,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-22 23:07:06,186 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:07:06,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 94 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:07:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-22 23:07:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2023-11-22 23:07:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2023-11-22 23:07:06,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-11-22 23:07:06,196 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 24 [2023-11-22 23:07:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:07:06,196 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-11-22 23:07:06,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:07:06,197 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-11-22 23:07:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-22 23:07:06,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:07:06,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:07:06,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 23:07:06,198 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:07:06,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:07:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1489036997, now seen corresponding path program 1 times [2023-11-22 23:07:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:07:06,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977074710] [2023-11-22 23:07:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:07:06,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:07:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:06,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:07:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:06,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:07:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 23:07:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:07:06,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:07:06,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977074710] [2023-11-22 23:07:06,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977074710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:07:06,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:07:06,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 23:07:06,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799403433] [2023-11-22 23:07:06,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:07:06,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 23:07:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 23:07:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 23:07:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:07:06,565 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:07:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:07:07,064 INFO L93 Difference]: Finished difference Result 172 states and 225 transitions. [2023-11-22 23:07:07,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 23:07:07,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 24 [2023-11-22 23:07:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:07:07,067 INFO L225 Difference]: With dead ends: 172 [2023-11-22 23:07:07,068 INFO L226 Difference]: Without dead ends: 121 [2023-11-22 23:07:07,068 INFO L412 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 [2023-11-22 23:07:07,069 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 119 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:07:07,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 103 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:07:07,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-22 23:07:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2023-11-22 23:07:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 74 states have internal predecessors, (84), 18 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (29), 18 states have call predecessors, (29), 18 states have call successors, (29) [2023-11-22 23:07:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2023-11-22 23:07:07,086 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 24 [2023-11-22 23:07:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:07:07,086 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2023-11-22 23:07:07,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:07:07,087 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2023-11-22 23:07:07,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-22 23:07:07,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:07:07,089 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-22 23:07:07,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 23:07:07,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:07:07,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:07:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash -97933331, now seen corresponding path program 1 times [2023-11-22 23:07:07,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 23:07:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076541601] [2023-11-22 23:07:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:07:07,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 23:07:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:07:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-22 23:07:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:09,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 23:07:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:09,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 23:07:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 23:07:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:09,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 23:07:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 23:07:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-22 23:07:10,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 23:07:10,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 23:07:10,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076541601] [2023-11-22 23:07:10,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076541601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 23:07:10,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032486976] [2023-11-22 23:07:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:07:10,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:07:10,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:07:10,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 23:07:10,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 23:07:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:07:10,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 156 conjunts are in the unsatisfiable core [2023-11-22 23:07:10,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:07:10,985 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-22 23:07:10,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-22 23:07:11,320 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-11-22 23:07:11,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-11-22 23:07:12,206 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:07:12,208 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:07:12,211 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 17 treesize of output 16 [2023-11-22 23:07:12,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2023-11-22 23:07:12,285 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-11-22 23:07:12,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-22 23:07:12,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:07:12,304 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:07:12,306 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 0 case distinctions, treesize of input 14 treesize of output 8 [2023-11-22 23:07:12,312 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 [2023-11-22 23:07:12,323 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:07:12,323 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:07:12,326 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 17 treesize of output 16 [2023-11-22 23:07:12,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2023-11-22 23:07:12,352 INFO L349 Elim1Store]: treesize reduction 31, result has 3.1 percent of original size [2023-11-22 23:07:12,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 1 [2023-11-22 23:07:12,357 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:07:12,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:07:12,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-22 23:07:12,366 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 [2023-11-22 23:07:12,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:07:12,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:07:12,379 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:07:12,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-11-22 23:07:12,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2023-11-22 23:07:12,421 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-11-22 23:07:12,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2023-11-22 23:07:12,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:07:12,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:07:12,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:07:12,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 8 [2023-11-22 23:07:12,447 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 [2023-11-22 23:07:59,880 WARN L293 SmtUtils]: Spent 46.15s on a formula simplification. DAG size of input: 361 DAG size of output: 135 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-22 23:07:59,880 INFO L349 Elim1Store]: treesize reduction 2113, result has 19.1 percent of original size [2023-11-22 23:07:59,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 18 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 22 new quantified variables, introduced 55 case distinctions, treesize of input 2758 treesize of output 3523 [2023-11-22 23:08:01,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:08:01,787 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:08:01,847 INFO L224 Elim1Store]: Index analysis took 180 ms [2023-11-22 23:08:04,354 INFO L349 Elim1Store]: treesize reduction 2239, result has 0.6 percent of original size [2023-11-22 23:08:04,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 26 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 9 new quantified variables, introduced 136 case distinctions, treesize of input 10861 treesize of output 13725 [2023-11-22 23:08:09,319 WARN L200 Elim1Store]: Array PQE input equivalent to false [2023-11-22 23:08:13,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:16,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:21,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:23,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:26,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:30,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:32,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:34,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:35,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:37,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:37,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:39,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:39,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:40,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:40,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:41,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:41,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:42,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:43,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:44,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:46,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:47,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:49,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:51,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:53,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:55,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:08:58,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:09:00,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:09:03,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:09:06,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:09:08,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:09:11,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2023-11-22 23:09:14,576 INFO L224 Elim1Store]: Index analysis took 231 ms [2023-11-22 23:09:15,026 INFO L349 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2023-11-22 23:09:15,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 72 [2023-11-22 23:09:15,235 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-22 23:09:15,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 23:09:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 23:09:15,436 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Complicated and unsupported kind of self-update: (select v_arrayElimArr_19 (select v_arrayElimCell_13 0)) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.classify(DerPreprocessor.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.classify(DerPreprocessor.java:205) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:104) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:543) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:522) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:515) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:326) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:298) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-22 23:09:15,444 INFO L158 Benchmark]: Toolchain (without parser) took 131474.99ms. Allocated memory was 165.7MB in the beginning and 616.6MB in the end (delta: 450.9MB). Free memory was 104.9MB in the beginning and 487.9MB in the end (delta: -383.0MB). Peak memory consumption was 350.4MB. Max. memory is 16.1GB. [2023-11-22 23:09:15,444 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 49.2MB in the beginning and 49.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-22 23:09:15,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.32ms. Allocated memory is still 165.7MB. Free memory was 104.5MB in the beginning and 127.9MB in the end (delta: -23.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-22 23:09:15,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.39ms. Allocated memory is still 165.7MB. Free memory was 127.9MB in the beginning and 125.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 23:09:15,444 INFO L158 Benchmark]: Boogie Preprocessor took 28.31ms. Allocated memory is still 165.7MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-22 23:09:15,444 INFO L158 Benchmark]: RCFGBuilder took 517.55ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 97.7MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-22 23:09:15,444 INFO L158 Benchmark]: TraceAbstraction took 130337.37ms. Allocated memory was 165.7MB in the beginning and 616.6MB in the end (delta: 450.9MB). Free memory was 97.3MB in the beginning and 487.9MB in the end (delta: -390.6MB). Peak memory consumption was 345.5MB. Max. memory is 16.1GB. [2023-11-22 23:09:15,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory was 49.2MB in the beginning and 49.1MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 514.32ms. Allocated memory is still 165.7MB. Free memory was 104.5MB in the beginning and 127.9MB in the end (delta: -23.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.39ms. Allocated memory is still 165.7MB. Free memory was 127.9MB in the beginning and 125.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.31ms. Allocated memory is still 165.7MB. Free memory was 125.8MB in the beginning and 123.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 517.55ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 97.7MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 130337.37ms. Allocated memory was 165.7MB in the beginning and 616.6MB in the end (delta: 450.9MB). Free memory was 97.3MB in the beginning and 487.9MB in the end (delta: -390.6MB). Peak memory consumption was 345.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Complicated and unsupported kind of self-update: (select v_arrayElimArr_19 (select v_arrayElimCell_13 0)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Complicated and unsupported kind of self-update: (select v_arrayElimArr_19 (select v_arrayElimCell_13 0)): de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.classify(DerPreprocessor.java:233) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-22 23:09:15,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 23:09:17,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 23:09:17,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-22 23:09:17,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 23:09:17,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 23:09:17,757 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 23:09:17,757 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 23:09:17,758 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 23:09:17,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 23:09:17,762 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 23:09:17,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 23:09:17,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 23:09:17,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 23:09:17,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 23:09:17,765 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 23:09:17,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 23:09:17,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 23:09:17,766 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 23:09:17,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 23:09:17,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 23:09:17,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 23:09:17,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 23:09:17,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 23:09:17,768 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-22 23:09:17,768 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-22 23:09:17,769 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-22 23:09:17,769 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 23:09:17,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 23:09:17,769 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 23:09:17,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 23:09:17,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 23:09:17,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 23:09:17,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 23:09:17,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:09:17,772 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 23:09:17,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 23:09:17,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 23:09:17,773 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-22 23:09:17,773 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-22 23:09:17,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 23:09:17,773 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 23:09:17,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 23:09:17,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 23:09:17,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 23:09:17,774 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-22 23:09:17,775 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 23:09:18,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 23:09:18,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 23:09:18,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 23:09:18,101 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 23:09:18,102 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 23:09:18,105 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2023-11-22 23:09:19,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 23:09:19,554 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 23:09:19,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2023-11-22 23:09:19,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3860164c6/5f7c72eb62344a2795621cc63ddeef0f/FLAGb9584a576 [2023-11-22 23:09:19,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3860164c6/5f7c72eb62344a2795621cc63ddeef0f [2023-11-22 23:09:19,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 23:09:19,581 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 23:09:19,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 23:09:19,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 23:09:19,589 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 23:09:19,590 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:09:19" (1/1) ... [2023-11-22 23:09:19,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f8d6d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:19, skipping insertion in model container [2023-11-22 23:09:19,591 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:09:19" (1/1) ... [2023-11-22 23:09:19,630 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:09:19,988 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-11-22 23:09:19,992 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-11-22 23:09:19,993 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-11-22 23:09:19,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:09:20,009 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-22 23:09:20,019 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 23:09:20,083 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-11-22 23:09:20,085 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-11-22 23:09:20,086 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-11-22 23:09:20,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:09:20,093 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 23:09:20,163 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-11-22 23:09:20,170 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-11-22 23:09:20,172 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-11-22 23:09:20,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 23:09:20,218 INFO L206 MainTranslator]: Completed translation [2023-11-22 23:09:20,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20 WrapperNode [2023-11-22 23:09:20,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 23:09:20,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 23:09:20,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 23:09:20,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 23:09:20,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,296 INFO L138 Inliner]: procedures = 140, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 134 [2023-11-22 23:09:20,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 23:09:20,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 23:09:20,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 23:09:20,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 23:09:20,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 23:09:20,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 23:09:20,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 23:09:20,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 23:09:20,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (1/1) ... [2023-11-22 23:09:20,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 23:09:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 23:09:20,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 23:09:20,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 23:09:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-11-22 23:09:20,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-11-22 23:09:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-22 23:09:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-22 23:09:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 23:09:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-22 23:09:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-22 23:09:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 23:09:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 23:09:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-11-22 23:09:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-11-22 23:09:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 23:09:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 23:09:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-22 23:09:20,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-22 23:09:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-11-22 23:09:20,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-11-22 23:09:20,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 23:09:20,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 23:09:20,631 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 23:09:20,633 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 23:09:20,990 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 23:09:21,053 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 23:09:21,055 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 23:09:21,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:09:21 BoogieIcfgContainer [2023-11-22 23:09:21,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 23:09:21,058 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 23:09:21,058 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 23:09:21,062 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 23:09:21,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:09:19" (1/3) ... [2023-11-22 23:09:21,063 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3e9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:09:21, skipping insertion in model container [2023-11-22 23:09:21,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:20" (2/3) ... [2023-11-22 23:09:21,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a3e9e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:09:21, skipping insertion in model container [2023-11-22 23:09:21,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:09:21" (3/3) ... [2023-11-22 23:09:21,066 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2023-11-22 23:09:21,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 23:09:21,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-22 23:09:21,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 23:09:21,143 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@709a826c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 23:09:21,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-22 23:09:21,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 32 states have (on average 1.4375) internal successors, (46), 35 states have internal predecessors, (46), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-22 23:09:21,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 23:09:21,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:09:21,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:09:21,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:09:21,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:09:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1319468369, now seen corresponding path program 1 times [2023-11-22 23:09:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 23:09:21,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201676555] [2023-11-22 23:09:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:09:21,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:21,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 23:09:21,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-22 23:09:21,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-22 23:09:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:09:21,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-22 23:09:21,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:09:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 23:09:21,406 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:09:21,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 23:09:21,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201676555] [2023-11-22 23:09:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201676555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:09:21,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:09:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 23:09:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343535035] [2023-11-22 23:09:21,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:09:21,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 23:09:21,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 23:09:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 23:09:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 23:09:21,451 INFO L87 Difference]: Start difference. First operand has 52 states, 32 states have (on average 1.4375) internal successors, (46), 35 states have internal predecessors, (46), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-22 23:09:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:09:21,592 INFO L93 Difference]: Finished difference Result 102 states and 143 transitions. [2023-11-22 23:09:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 23:09:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2023-11-22 23:09:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:09:21,601 INFO L225 Difference]: With dead ends: 102 [2023-11-22 23:09:21,602 INFO L226 Difference]: Without dead ends: 50 [2023-11-22 23:09:21,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 23:09:21,609 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:09:21,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 23:09:21,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-22 23:09:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-22 23:09:21,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-22 23:09:21,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2023-11-22 23:09:21,655 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 23 [2023-11-22 23:09:21,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:09:21,656 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2023-11-22 23:09:21,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-22 23:09:21,657 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2023-11-22 23:09:21,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 23:09:21,660 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:09:21,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:09:21,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-22 23:09:21,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:21,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:09:21,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:09:21,866 INFO L85 PathProgramCache]: Analyzing trace with hash -509297331, now seen corresponding path program 1 times [2023-11-22 23:09:21,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 23:09:21,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933888814] [2023-11-22 23:09:21,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:09:21,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:21,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 23:09:21,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-22 23:09:21,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-22 23:09:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:09:21,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 23:09:22,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:09:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:09:22,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:09:22,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 23:09:22,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933888814] [2023-11-22 23:09:22,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933888814] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:09:22,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:09:22,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:09:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509684321] [2023-11-22 23:09:22,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:09:22,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 23:09:22,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 23:09:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 23:09:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 23:09:22,324 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:09:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:09:22,850 INFO L93 Difference]: Finished difference Result 141 states and 179 transitions. [2023-11-22 23:09:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 23:09:22,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-22 23:09:22,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:09:22,854 INFO L225 Difference]: With dead ends: 141 [2023-11-22 23:09:22,854 INFO L226 Difference]: Without dead ends: 97 [2023-11-22 23:09:22,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-22 23:09:22,856 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 42 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 23:09:22,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 130 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 23:09:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-22 23:09:22,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2023-11-22 23:09:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 18 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (23), 17 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-22 23:09:22,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2023-11-22 23:09:22,893 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 23 [2023-11-22 23:09:22,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:09:22,894 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2023-11-22 23:09:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:09:22,895 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2023-11-22 23:09:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-22 23:09:22,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:09:22,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:09:22,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-22 23:09:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:23,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:09:23,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:09:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash -560090986, now seen corresponding path program 1 times [2023-11-22 23:09:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 23:09:23,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693114199] [2023-11-22 23:09:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:09:23,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:23,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 23:09:23,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-22 23:09:23,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-22 23:09:23,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:09:23,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:09:23,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:09:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 23:09:23,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:09:23,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 23:09:23,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693114199] [2023-11-22 23:09:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693114199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:09:23,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:09:23,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:09:23,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165836664] [2023-11-22 23:09:23,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:09:23,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:09:23,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 23:09:23,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:09:23,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:09:23,213 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:09:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:09:23,529 INFO L93 Difference]: Finished difference Result 92 states and 119 transitions. [2023-11-22 23:09:23,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:09:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-22 23:09:23,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:09:23,531 INFO L225 Difference]: With dead ends: 92 [2023-11-22 23:09:23,531 INFO L226 Difference]: Without dead ends: 90 [2023-11-22 23:09:23,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:09:23,532 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 23:09:23,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 23:09:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-22 23:09:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2023-11-22 23:09:23,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.25) internal successors, (70), 60 states have internal predecessors, (70), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2023-11-22 23:09:23,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 114 transitions. [2023-11-22 23:09:23,546 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 114 transitions. Word has length 23 [2023-11-22 23:09:23,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:09:23,546 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 114 transitions. [2023-11-22 23:09:23,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-22 23:09:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 114 transitions. [2023-11-22 23:09:23,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-22 23:09:23,548 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:09:23,548 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2023-11-22 23:09:23,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-22 23:09:23,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:23,752 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:09:23,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:09:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1184464339, now seen corresponding path program 1 times [2023-11-22 23:09:23,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 23:09:23,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914384497] [2023-11-22 23:09:23,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:09:23,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:23,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 23:09:23,756 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-22 23:09:23,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-22 23:09:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:09:23,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 23:09:23,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:09:24,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 23:09:24,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 23:09:24,343 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 23:09:24,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:09:24,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 23:09:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914384497] [2023-11-22 23:09:24,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914384497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:09:24,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:09:24,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 23:09:24,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813802768] [2023-11-22 23:09:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:09:24,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 23:09:24,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 23:09:24,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 23:09:24,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 23:09:24,347 INFO L87 Difference]: Start difference. First operand 88 states and 114 transitions. Second operand has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-22 23:09:25,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:09:25,865 INFO L93 Difference]: Finished difference Result 227 states and 297 transitions. [2023-11-22 23:09:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-22 23:09:25,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 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 61 [2023-11-22 23:09:25,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:09:25,868 INFO L225 Difference]: With dead ends: 227 [2023-11-22 23:09:25,868 INFO L226 Difference]: Without dead ends: 137 [2023-11-22 23:09:25,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-11-22 23:09:25,870 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 140 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 23:09:25,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 186 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 23:09:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-22 23:09:25,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 104. [2023-11-22 23:09:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 74 states have internal predecessors, (84), 19 states have call successors, (19), 10 states have call predecessors, (19), 14 states have return successors, (32), 19 states have call predecessors, (32), 19 states have call successors, (32) [2023-11-22 23:09:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2023-11-22 23:09:25,903 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 61 [2023-11-22 23:09:25,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:09:25,903 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2023-11-22 23:09:25,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-22 23:09:25,904 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2023-11-22 23:09:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-22 23:09:25,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:09:25,912 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2023-11-22 23:09:25,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-22 23:09:26,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:26,119 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:09:26,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:09:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1213095821, now seen corresponding path program 1 times [2023-11-22 23:09:26,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 23:09:26,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417655750] [2023-11-22 23:09:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:09:26,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:26,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 23:09:26,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-22 23:09:26,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-22 23:09:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:09:26,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 23:09:26,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:09:26,267 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-22 23:09:26,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 23:09:26,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-22 23:09:26,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417655750] [2023-11-22 23:09:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417655750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 23:09:26,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 23:09:26,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 23:09:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236732161] [2023-11-22 23:09:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 23:09:26,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 23:09:26,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-22 23:09:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 23:09:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:09:26,270 INFO L87 Difference]: Start difference. First operand 104 states and 135 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 23:09:26,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 23:09:26,478 INFO L93 Difference]: Finished difference Result 166 states and 207 transitions. [2023-11-22 23:09:26,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 23:09:26,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 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 61 [2023-11-22 23:09:26,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 23:09:26,480 INFO L225 Difference]: With dead ends: 166 [2023-11-22 23:09:26,480 INFO L226 Difference]: Without dead ends: 93 [2023-11-22 23:09:26,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 23:09:26,482 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 23:09:26,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 23:09:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-22 23:09:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2023-11-22 23:09:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 62 states have internal predecessors, (68), 15 states have call successors, (15), 9 states have call predecessors, (15), 12 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2023-11-22 23:09:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2023-11-22 23:09:26,493 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 61 [2023-11-22 23:09:26,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 23:09:26,494 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2023-11-22 23:09:26,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-22 23:09:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2023-11-22 23:09:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-22 23:09:26,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 23:09:26,496 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 23:09:26,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-22 23:09:26,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:26,701 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 23:09:26,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 23:09:26,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1300834151, now seen corresponding path program 1 times [2023-11-22 23:09:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-22 23:09:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531481333] [2023-11-22 23:09:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 23:09:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-22 23:09:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-22 23:09:26,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-22 23:09:26,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-22 23:09:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 23:09:26,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 86 conjunts are in the unsatisfiable core [2023-11-22 23:09:26,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 23:09:26,926 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 6 treesize of output 7 [2023-11-22 23:09:27,190 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-22 23:09:27,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-22 23:09:27,826 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 49 treesize of output 52 [2023-11-22 23:09:27,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 62 [2023-11-22 23:09:27,851 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:09:27,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 32 [2023-11-22 23:09:27,886 INFO L349 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-11-22 23:09:27,886 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 1 case distinctions, treesize of input 13 treesize of output 17 [2023-11-22 23:09:27,915 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 44 treesize of output 47 [2023-11-22 23:09:27,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 50 [2023-11-22 23:09:27,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 36 [2023-11-22 23:09:29,704 INFO L349 Elim1Store]: treesize reduction 45, result has 16.7 percent of original size [2023-11-22 23:09:29,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 26 [2023-11-22 23:09:29,777 INFO L349 Elim1Store]: treesize reduction 124, result has 27.1 percent of original size [2023-11-22 23:09:29,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 53 [2023-11-22 23:09:29,835 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 49 treesize of output 47 [2023-11-22 23:09:29,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 55 [2023-11-22 23:09:29,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2023-11-22 23:09:29,886 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 32 treesize of output 31 [2023-11-22 23:09:29,944 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 54 treesize of output 52 [2023-11-22 23:09:29,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 55 [2023-11-22 23:09:29,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 32 [2023-11-22 23:09:29,998 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 [2023-11-22 23:09:30,032 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:09:30,033 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 49 treesize of output 52 [2023-11-22 23:09:30,043 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:09:30,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2023-11-22 23:09:30,112 INFO L349 Elim1Store]: treesize reduction 130, result has 33.7 percent of original size [2023-11-22 23:09:30,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 85 [2023-11-22 23:09:30,220 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 44 treesize of output 47 [2023-11-22 23:09:30,230 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:09:30,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 50 [2023-11-22 23:09:30,341 INFO L349 Elim1Store]: treesize reduction 146, result has 25.5 percent of original size [2023-11-22 23:09:30,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 69 [2023-11-22 23:09:49,840 WARN L293 SmtUtils]: Spent 16.93s on a formula simplification. DAG size of input: 173 DAG size of output: 172 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-22 23:10:33,255 WARN L293 SmtUtils]: Spent 36.24s on a formula simplification. DAG size of input: 126 DAG size of output: 67 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-22 23:10:33,256 INFO L349 Elim1Store]: treesize reduction 739, result has 33.2 percent of original size [2023-11-22 23:10:33,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 10 new quantified variables, introduced 20 case distinctions, treesize of input 2278 treesize of output 2609 [2023-11-22 23:10:33,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 28 [2023-11-22 23:10:33,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 28 [2023-11-22 23:10:33,596 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2023-11-22 23:10:33,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 1 [2023-11-22 23:10:34,737 INFO L349 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size [2023-11-22 23:10:34,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 1629 treesize of output 1604 [2023-11-22 23:10:34,764 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 160 treesize of output 158 [2023-11-22 23:10:34,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 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 154 treesize of output 222 [2023-11-22 23:10:35,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:10:35,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 41 [2023-11-22 23:10:35,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 61 [2023-11-22 23:10:35,096 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 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-22 23:10:35,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2023-11-22 23:10:35,602 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 36 [2023-11-22 23:10:35,639 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:10:35,639 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 22 treesize of output 1 [2023-11-22 23:10:35,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 28 [2023-11-22 23:10:35,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 28 [2023-11-22 23:10:36,532 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2023-11-22 23:10:36,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 1 [2023-11-22 23:10:36,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 28 [2023-11-22 23:10:36,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 28 [2023-11-22 23:10:36,881 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2023-11-22 23:10:36,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 1 [2023-11-22 23:10:37,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:10:37,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:10:37,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:10:37,321 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-22 23:10:37,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 718 treesize of output 1405 [2023-11-22 23:10:37,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 401 treesize of output 243 [2023-11-22 23:10:37,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-22 23:10:39,436 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 [2023-11-22 23:10:47,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:10:47,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:10:47,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 23:10:47,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 233 [2023-11-22 23:10:47,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-22 23:10:47,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 256 [2023-11-22 23:10:47,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 31 treesize of output 31 [2023-11-22 23:10:47,788 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 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-22 23:10:48,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 117 [2023-11-22 23:10:49,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 23 [2023-11-22 23:10:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 23:10:57,607 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 23:11:11,904 WARN L293 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 117 DAG size of output: 116 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15