./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 10:39:24,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 10:39:24,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 10:39:24,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 10:39:24,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 10:39:24,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 10:39:24,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 10:39:24,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 10:39:24,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 10:39:24,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 10:39:24,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 10:39:24,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 10:39:24,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 10:39:24,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 10:39:24,524 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 10:39:24,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 10:39:24,525 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 10:39:24,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 10:39:24,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 10:39:24,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 10:39:24,526 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 10:39:24,528 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 10:39:24,528 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 10:39:24,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 10:39:24,529 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 10:39:24,529 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 10:39:24,529 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 10:39:24,529 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 10:39:24,529 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 10:39:24,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 10:39:24,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 10:39:24,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 10:39:24,530 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 10:39:24,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:39:24,530 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 10:39:24,530 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 10:39:24,531 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 10:39:24,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 10:39:24,531 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 10:39:24,531 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 10:39:24,531 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 10:39:24,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 10:39:24,533 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-09 10:39:24,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 10:39:24,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 10:39:24,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 10:39:24,744 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 10:39:24,744 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 10:39:24,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-09 10:39:26,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 10:39:26,293 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 10:39:26,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-09 10:39:26,320 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b3a2946/d38eb7a62fac48e7bfb0541ceaf30b1a/FLAGf7d6d5e53 [2024-11-09 10:39:26,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07b3a2946/d38eb7a62fac48e7bfb0541ceaf30b1a [2024-11-09 10:39:26,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 10:39:26,338 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 10:39:26,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 10:39:26,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 10:39:26,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 10:39:26,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:26" (1/1) ... [2024-11-09 10:39:26,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77c6392d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:26, skipping insertion in model container [2024-11-09 10:39:26,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:39:26" (1/1) ... [2024-11-09 10:39:26,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 10:39:26,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:39:26,918 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 10:39:26,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 10:39:27,079 INFO L204 MainTranslator]: Completed translation [2024-11-09 10:39:27,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27 WrapperNode [2024-11-09 10:39:27,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 10:39:27,080 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 10:39:27,080 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 10:39:27,081 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 10:39:27,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,148 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 109 [2024-11-09 10:39:27,148 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 10:39:27,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 10:39:27,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 10:39:27,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 10:39:27,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,184 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [5, 1, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2024-11-09 10:39:27,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,200 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,208 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 10:39:27,215 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 10:39:27,215 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 10:39:27,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 10:39:27,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (1/1) ... [2024-11-09 10:39:27,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 10:39:27,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:39:27,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 10:39:27,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 10:39:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-09 10:39:27,298 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-09 10:39:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-09 10:39:27,298 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-09 10:39:27,298 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 10:39:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 10:39:27,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 10:39:27,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 10:39:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 10:39:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 10:39:27,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-09 10:39:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-09 10:39:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 10:39:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 10:39:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 10:39:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 10:39:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 10:39:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 10:39:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 10:39:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-09 10:39:27,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-09 10:39:27,304 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 10:39:27,565 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 10:39:27,568 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 10:39:27,905 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 10:39:27,905 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 10:39:28,006 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 10:39:28,006 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-09 10:39:28,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:28 BoogieIcfgContainer [2024-11-09 10:39:28,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 10:39:28,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 10:39:28,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 10:39:28,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 10:39:28,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:39:26" (1/3) ... [2024-11-09 10:39:28,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35988d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:28, skipping insertion in model container [2024-11-09 10:39:28,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:39:27" (2/3) ... [2024-11-09 10:39:28,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35988d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:39:28, skipping insertion in model container [2024-11-09 10:39:28,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:28" (3/3) ... [2024-11-09 10:39:28,013 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-09 10:39:28,025 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 10:39:28,026 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-11-09 10:39:28,026 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 10:39:28,129 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 10:39:28,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 140 transitions, 294 flow [2024-11-09 10:39:28,215 INFO L124 PetriNetUnfolderBase]: 39/138 cut-off events. [2024-11-09 10:39:28,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 10:39:28,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 39/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 395 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 105. Up to 5 conditions per place. [2024-11-09 10:39:28,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 140 transitions, 294 flow [2024-11-09 10:39:28,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 137 transitions, 286 flow [2024-11-09 10:39:28,236 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 10:39:28,243 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@366093a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 10:39:28,243 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-11-09 10:39:28,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 10:39:28,246 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-09 10:39:28,246 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 10:39:28,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:28,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 10:39:28,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:28,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash 587239, now seen corresponding path program 1 times [2024-11-09 10:39:28,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:28,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313215516] [2024-11-09 10:39:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:28,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:28,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313215516] [2024-11-09 10:39:28,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313215516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:28,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 10:39:28,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691029587] [2024-11-09 10:39:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:28,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:28,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:28,609 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-09 10:39:28,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:28,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:28,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-09 10:39:28,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:29,046 INFO L124 PetriNetUnfolderBase]: 1073/3046 cut-off events. [2024-11-09 10:39:29,046 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-09 10:39:29,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4747 conditions, 3046 events. 1073/3046 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 26072 event pairs, 393 based on Foata normal form. 1045/3132 useless extension candidates. Maximal degree in co-relation 4538. Up to 885 conditions per place. [2024-11-09 10:39:29,073 INFO L140 encePairwiseOnDemand]: 112/140 looper letters, 64 selfloop transitions, 9 changer transitions 5/136 dead transitions. [2024-11-09 10:39:29,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 136 transitions, 438 flow [2024-11-09 10:39:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2024-11-09 10:39:29,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7761904761904762 [2024-11-09 10:39:29,089 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 286 flow. Second operand 3 states and 326 transitions. [2024-11-09 10:39:29,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 136 transitions, 438 flow [2024-11-09 10:39:29,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 136 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 10:39:29,097 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 253 flow [2024-11-09 10:39:29,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2024-11-09 10:39:29,102 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-09 10:39:29,102 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 253 flow [2024-11-09 10:39:29,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:29,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:29,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:29,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 10:39:29,103 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:29,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:29,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1256534116, now seen corresponding path program 1 times [2024-11-09 10:39:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:29,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944178027] [2024-11-09 10:39:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:29,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:29,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:29,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944178027] [2024-11-09 10:39:29,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944178027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:29,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:29,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:29,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599438631] [2024-11-09 10:39:29,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:29,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:29,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:29,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:29,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:29,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-09 10:39:29,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:29,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:29,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-09 10:39:29,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:29,536 INFO L124 PetriNetUnfolderBase]: 1177/2824 cut-off events. [2024-11-09 10:39:29,537 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-11-09 10:39:29,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5196 conditions, 2824 events. 1177/2824 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21708 event pairs, 843 based on Foata normal form. 0/2145 useless extension candidates. Maximal degree in co-relation 2039. Up to 1653 conditions per place. [2024-11-09 10:39:29,553 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 59 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2024-11-09 10:39:29,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 116 transitions, 403 flow [2024-11-09 10:39:29,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2024-11-09 10:39:29,556 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-09 10:39:29,556 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 253 flow. Second operand 3 states and 265 transitions. [2024-11-09 10:39:29,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 116 transitions, 403 flow [2024-11-09 10:39:29,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 116 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:29,560 INFO L231 Difference]: Finished difference. Result has 92 places, 103 transitions, 246 flow [2024-11-09 10:39:29,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=92, PETRI_TRANSITIONS=103} [2024-11-09 10:39:29,561 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -13 predicate places. [2024-11-09 10:39:29,562 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 103 transitions, 246 flow [2024-11-09 10:39:29,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:29,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:29,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:29,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 10:39:29,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:29,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:29,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1256534115, now seen corresponding path program 1 times [2024-11-09 10:39:29,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248463000] [2024-11-09 10:39:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:29,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248463000] [2024-11-09 10:39:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248463000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:29,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:29,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:29,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100043394] [2024-11-09 10:39:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:29,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:29,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:29,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-09 10:39:29,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:29,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:29,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-09 10:39:29,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:29,935 INFO L124 PetriNetUnfolderBase]: 1175/2823 cut-off events. [2024-11-09 10:39:29,936 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-09 10:39:29,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2823 events. 1175/2823 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21796 event pairs, 841 based on Foata normal form. 0/2138 useless extension candidates. Maximal degree in co-relation 4787. Up to 1659 conditions per place. [2024-11-09 10:39:29,950 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 56 selfloop transitions, 5 changer transitions 2/117 dead transitions. [2024-11-09 10:39:29,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 117 transitions, 404 flow [2024-11-09 10:39:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-09 10:39:29,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-09 10:39:29,952 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 246 flow. Second operand 3 states and 267 transitions. [2024-11-09 10:39:29,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 117 transitions, 404 flow [2024-11-09 10:39:29,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 117 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:29,957 INFO L231 Difference]: Finished difference. Result has 95 places, 106 transitions, 282 flow [2024-11-09 10:39:29,958 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=95, PETRI_TRANSITIONS=106} [2024-11-09 10:39:29,959 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-09 10:39:29,959 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 106 transitions, 282 flow [2024-11-09 10:39:29,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:29,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:29,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:29,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 10:39:29,960 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:29,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:29,961 INFO L85 PathProgramCache]: Analyzing trace with hash -741985710, now seen corresponding path program 1 times [2024-11-09 10:39:29,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:29,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536023595] [2024-11-09 10:39:29,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:29,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:30,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:30,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536023595] [2024-11-09 10:39:30,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536023595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:30,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:30,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:39:30,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894422412] [2024-11-09 10:39:30,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:30,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:30,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:30,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:30,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-09 10:39:30,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 106 transitions, 282 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:30,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:30,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-09 10:39:30,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:30,409 INFO L124 PetriNetUnfolderBase]: 1536/3282 cut-off events. [2024-11-09 10:39:30,409 INFO L125 PetriNetUnfolderBase]: For 596/596 co-relation queries the response was YES. [2024-11-09 10:39:30,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6271 conditions, 3282 events. 1536/3282 cut-off events. For 596/596 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 23679 event pairs, 540 based on Foata normal form. 0/2683 useless extension candidates. Maximal degree in co-relation 6075. Up to 1148 conditions per place. [2024-11-09 10:39:30,427 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 119 selfloop transitions, 6 changer transitions 0/174 dead transitions. [2024-11-09 10:39:30,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 174 transitions, 724 flow [2024-11-09 10:39:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 10:39:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 10:39:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2024-11-09 10:39:30,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6485714285714286 [2024-11-09 10:39:30,429 INFO L175 Difference]: Start difference. First operand has 95 places, 106 transitions, 282 flow. Second operand 5 states and 454 transitions. [2024-11-09 10:39:30,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 174 transitions, 724 flow [2024-11-09 10:39:30,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 174 transitions, 708 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-09 10:39:30,436 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 258 flow [2024-11-09 10:39:30,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2024-11-09 10:39:30,436 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -14 predicate places. [2024-11-09 10:39:30,437 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 258 flow [2024-11-09 10:39:30,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:30,438 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:30,438 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:30,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 10:39:30,438 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:30,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash 359007367, now seen corresponding path program 1 times [2024-11-09 10:39:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735753952] [2024-11-09 10:39:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:30,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:30,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:30,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735753952] [2024-11-09 10:39:30,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735753952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:30,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:30,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499364190] [2024-11-09 10:39:30,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:30,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:30,556 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-09 10:39:30,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:30,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:30,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-09 10:39:30,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:30,974 INFO L124 PetriNetUnfolderBase]: 2419/5138 cut-off events. [2024-11-09 10:39:30,974 INFO L125 PetriNetUnfolderBase]: For 782/805 co-relation queries the response was YES. [2024-11-09 10:39:30,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9803 conditions, 5138 events. 2419/5138 cut-off events. For 782/805 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 40535 event pairs, 1228 based on Foata normal form. 22/4183 useless extension candidates. Maximal degree in co-relation 9383. Up to 2199 conditions per place. [2024-11-09 10:39:31,007 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 74 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-11-09 10:39:31,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 125 transitions, 480 flow [2024-11-09 10:39:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-11-09 10:39:31,015 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-09 10:39:31,015 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 258 flow. Second operand 3 states and 276 transitions. [2024-11-09 10:39:31,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 125 transitions, 480 flow [2024-11-09 10:39:31,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 125 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:31,024 INFO L231 Difference]: Finished difference. Result has 91 places, 98 transitions, 256 flow [2024-11-09 10:39:31,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=91, PETRI_TRANSITIONS=98} [2024-11-09 10:39:31,025 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -14 predicate places. [2024-11-09 10:39:31,026 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 98 transitions, 256 flow [2024-11-09 10:39:31,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:31,026 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:31,026 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:31,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 10:39:31,028 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:31,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash 359007368, now seen corresponding path program 1 times [2024-11-09 10:39:31,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:31,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435685524] [2024-11-09 10:39:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:31,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:31,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:31,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435685524] [2024-11-09 10:39:31,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435685524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:31,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:31,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:31,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879888067] [2024-11-09 10:39:31,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:31,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:31,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:31,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:31,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-09 10:39:31,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 98 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:31,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:31,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-09 10:39:31,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:31,508 INFO L124 PetriNetUnfolderBase]: 2537/5279 cut-off events. [2024-11-09 10:39:31,508 INFO L125 PetriNetUnfolderBase]: For 1156/1179 co-relation queries the response was YES. [2024-11-09 10:39:31,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10332 conditions, 5279 events. 2537/5279 cut-off events. For 1156/1179 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 41234 event pairs, 1305 based on Foata normal form. 22/4207 useless extension candidates. Maximal degree in co-relation 9784. Up to 2503 conditions per place. [2024-11-09 10:39:31,533 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 72 selfloop transitions, 6 changer transitions 0/126 dead transitions. [2024-11-09 10:39:31,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 126 transitions, 482 flow [2024-11-09 10:39:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-09 10:39:31,535 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6619047619047619 [2024-11-09 10:39:31,535 INFO L175 Difference]: Start difference. First operand has 91 places, 98 transitions, 256 flow. Second operand 3 states and 278 transitions. [2024-11-09 10:39:31,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 126 transitions, 482 flow [2024-11-09 10:39:31,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 126 transitions, 480 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:31,541 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 304 flow [2024-11-09 10:39:31,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2024-11-09 10:39:31,544 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -11 predicate places. [2024-11-09 10:39:31,544 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 304 flow [2024-11-09 10:39:31,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:31,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:31,544 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:31,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 10:39:31,545 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:31,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 151655789, now seen corresponding path program 1 times [2024-11-09 10:39:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441651885] [2024-11-09 10:39:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:31,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441651885] [2024-11-09 10:39:31,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441651885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:31,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:31,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:39:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877760254] [2024-11-09 10:39:31,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:31,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:31,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:31,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:31,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-09 10:39:31,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:31,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:31,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-09 10:39:31,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:31,859 INFO L124 PetriNetUnfolderBase]: 1574/3818 cut-off events. [2024-11-09 10:39:31,859 INFO L125 PetriNetUnfolderBase]: For 2337/2337 co-relation queries the response was YES. [2024-11-09 10:39:31,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8220 conditions, 3818 events. 1574/3818 cut-off events. For 2337/2337 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30499 event pairs, 1222 based on Foata normal form. 0/3032 useless extension candidates. Maximal degree in co-relation 7610. Up to 2329 conditions per place. [2024-11-09 10:39:31,873 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 72 selfloop transitions, 2 changer transitions 0/125 dead transitions. [2024-11-09 10:39:31,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 125 transitions, 534 flow [2024-11-09 10:39:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:31,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2024-11-09 10:39:31,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-11-09 10:39:31,875 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 304 flow. Second operand 3 states and 276 transitions. [2024-11-09 10:39:31,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 125 transitions, 534 flow [2024-11-09 10:39:31,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 502 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-09 10:39:31,882 INFO L231 Difference]: Finished difference. Result has 95 places, 103 transitions, 296 flow [2024-11-09 10:39:31,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=95, PETRI_TRANSITIONS=103} [2024-11-09 10:39:31,883 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-09 10:39:31,883 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 103 transitions, 296 flow [2024-11-09 10:39:31,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:31,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:31,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:31,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 10:39:31,884 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:31,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 493964998, now seen corresponding path program 1 times [2024-11-09 10:39:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225309326] [2024-11-09 10:39:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:31,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:31,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225309326] [2024-11-09 10:39:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225309326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:31,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:31,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:31,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459373996] [2024-11-09 10:39:31,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:31,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:31,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:31,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-09 10:39:31,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 103 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:31,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:31,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-09 10:39:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:32,259 INFO L124 PetriNetUnfolderBase]: 1743/4077 cut-off events. [2024-11-09 10:39:32,260 INFO L125 PetriNetUnfolderBase]: For 1308/1354 co-relation queries the response was YES. [2024-11-09 10:39:32,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8602 conditions, 4077 events. 1743/4077 cut-off events. For 1308/1354 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 32331 event pairs, 1240 based on Foata normal form. 46/3322 useless extension candidates. Maximal degree in co-relation 8277. Up to 2270 conditions per place. [2024-11-09 10:39:32,279 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 70 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-09 10:39:32,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 509 flow [2024-11-09 10:39:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2024-11-09 10:39:32,281 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-11-09 10:39:32,281 INFO L175 Difference]: Start difference. First operand has 95 places, 103 transitions, 296 flow. Second operand 3 states and 267 transitions. [2024-11-09 10:39:32,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 509 flow [2024-11-09 10:39:32,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 502 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:32,289 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 296 flow [2024-11-09 10:39:32,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-11-09 10:39:32,289 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -10 predicate places. [2024-11-09 10:39:32,289 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 296 flow [2024-11-09 10:39:32,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:32,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:32,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:32,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 10:39:32,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:32,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash 493964999, now seen corresponding path program 1 times [2024-11-09 10:39:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:32,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651825416] [2024-11-09 10:39:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:32,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:32,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651825416] [2024-11-09 10:39:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651825416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:32,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:32,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 10:39:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945989032] [2024-11-09 10:39:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:32,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:32,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 140 [2024-11-09 10:39:32,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:32,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:32,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 140 [2024-11-09 10:39:32,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:32,757 INFO L124 PetriNetUnfolderBase]: 1749/4088 cut-off events. [2024-11-09 10:39:32,757 INFO L125 PetriNetUnfolderBase]: For 1433/1481 co-relation queries the response was YES. [2024-11-09 10:39:32,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8676 conditions, 4088 events. 1749/4088 cut-off events. For 1433/1481 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 32470 event pairs, 1268 based on Foata normal form. 48/3295 useless extension candidates. Maximal degree in co-relation 8325. Up to 2415 conditions per place. [2024-11-09 10:39:32,778 INFO L140 encePairwiseOnDemand]: 134/140 looper letters, 67 selfloop transitions, 8 changer transitions 0/123 dead transitions. [2024-11-09 10:39:32,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 123 transitions, 514 flow [2024-11-09 10:39:32,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:32,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2024-11-09 10:39:32,780 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6404761904761904 [2024-11-09 10:39:32,780 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 296 flow. Second operand 3 states and 269 transitions. [2024-11-09 10:39:32,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 123 transitions, 514 flow [2024-11-09 10:39:32,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 123 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:32,786 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 362 flow [2024-11-09 10:39:32,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2024-11-09 10:39:32,787 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -7 predicate places. [2024-11-09 10:39:32,787 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 362 flow [2024-11-09 10:39:32,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:32,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:32,788 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:32,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 10:39:32,788 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:32,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1565901865, now seen corresponding path program 1 times [2024-11-09 10:39:32,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:32,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474142235] [2024-11-09 10:39:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:32,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:32,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:32,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474142235] [2024-11-09 10:39:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474142235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 10:39:32,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978938839] [2024-11-09 10:39:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:32,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 10:39:32,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 10:39:32,835 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 10:39:32,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 10:39:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:32,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 10:39:32,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 10:39:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:32,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 10:39:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:32,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978938839] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 10:39:32,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 10:39:32,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 10:39:32,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899804218] [2024-11-09 10:39:32,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 10:39:32,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 10:39:32,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:32,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 10:39:32,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 10:39:32,986 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 140 [2024-11-09 10:39:32,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:32,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:32,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 140 [2024-11-09 10:39:32,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:33,373 INFO L124 PetriNetUnfolderBase]: 1809/4261 cut-off events. [2024-11-09 10:39:33,373 INFO L125 PetriNetUnfolderBase]: For 2380/2380 co-relation queries the response was YES. [2024-11-09 10:39:33,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9721 conditions, 4261 events. 1809/4261 cut-off events. For 2380/2380 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 33792 event pairs, 1243 based on Foata normal form. 0/3462 useless extension candidates. Maximal degree in co-relation 9315. Up to 2384 conditions per place. [2024-11-09 10:39:33,391 INFO L140 encePairwiseOnDemand]: 137/140 looper letters, 146 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2024-11-09 10:39:33,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 202 transitions, 1040 flow [2024-11-09 10:39:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 10:39:33,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 10:39:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2024-11-09 10:39:33,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6595238095238095 [2024-11-09 10:39:33,393 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 362 flow. Second operand 6 states and 554 transitions. [2024-11-09 10:39:33,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 202 transitions, 1040 flow [2024-11-09 10:39:33,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 202 transitions, 984 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-09 10:39:33,403 INFO L231 Difference]: Finished difference. Result has 104 places, 110 transitions, 374 flow [2024-11-09 10:39:33,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=374, PETRI_PLACES=104, PETRI_TRANSITIONS=110} [2024-11-09 10:39:33,404 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -1 predicate places. [2024-11-09 10:39:33,405 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 110 transitions, 374 flow [2024-11-09 10:39:33,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:33,405 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:33,405 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:33,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 10:39:33,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 10:39:33,606 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:33,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1155197353, now seen corresponding path program 1 times [2024-11-09 10:39:33,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:33,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877663304] [2024-11-09 10:39:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:33,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:33,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:33,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877663304] [2024-11-09 10:39:33,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877663304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:33,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:33,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:39:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593103188] [2024-11-09 10:39:33,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:33,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 10:39:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 10:39:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 10:39:33,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 140 [2024-11-09 10:39:33,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 110 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:33,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:33,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 140 [2024-11-09 10:39:33,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:33,989 INFO L124 PetriNetUnfolderBase]: 2910/6226 cut-off events. [2024-11-09 10:39:33,989 INFO L125 PetriNetUnfolderBase]: For 3152/3236 co-relation queries the response was YES. [2024-11-09 10:39:34,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14411 conditions, 6226 events. 2910/6226 cut-off events. For 3152/3236 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 49284 event pairs, 1248 based on Foata normal form. 86/5208 useless extension candidates. Maximal degree in co-relation 14147. Up to 2888 conditions per place. [2024-11-09 10:39:34,017 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 91 selfloop transitions, 3 changer transitions 2/131 dead transitions. [2024-11-09 10:39:34,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 668 flow [2024-11-09 10:39:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:34,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-11-09 10:39:34,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-11-09 10:39:34,019 INFO L175 Difference]: Start difference. First operand has 104 places, 110 transitions, 374 flow. Second operand 3 states and 259 transitions. [2024-11-09 10:39:34,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 668 flow [2024-11-09 10:39:34,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 131 transitions, 641 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:34,029 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 323 flow [2024-11-09 10:39:34,029 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=323, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2024-11-09 10:39:34,030 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -11 predicate places. [2024-11-09 10:39:34,030 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 323 flow [2024-11-09 10:39:34,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:34,030 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:34,030 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:34,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 10:39:34,030 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:34,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:34,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2095751187, now seen corresponding path program 2 times [2024-11-09 10:39:34,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:34,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930742747] [2024-11-09 10:39:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:34,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 10:39:34,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:34,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930742747] [2024-11-09 10:39:34,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930742747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:34,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:34,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:39:34,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71188676] [2024-11-09 10:39:34,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:34,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:34,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:34,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:34,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-09 10:39:34,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 323 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:34,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:34,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-09 10:39:34,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:34,358 INFO L124 PetriNetUnfolderBase]: 1692/3388 cut-off events. [2024-11-09 10:39:34,359 INFO L125 PetriNetUnfolderBase]: For 2131/2131 co-relation queries the response was YES. [2024-11-09 10:39:34,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8687 conditions, 3388 events. 1692/3388 cut-off events. For 2131/2131 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 23359 event pairs, 517 based on Foata normal form. 48/3042 useless extension candidates. Maximal degree in co-relation 8497. Up to 1634 conditions per place. [2024-11-09 10:39:34,377 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 84 selfloop transitions, 4 changer transitions 10/128 dead transitions. [2024-11-09 10:39:34,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 128 transitions, 620 flow [2024-11-09 10:39:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:39:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:39:34,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2024-11-09 10:39:34,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-11-09 10:39:34,379 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 323 flow. Second operand 4 states and 358 transitions. [2024-11-09 10:39:34,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 128 transitions, 620 flow [2024-11-09 10:39:34,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 128 transitions, 602 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 10:39:34,387 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 232 flow [2024-11-09 10:39:34,387 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-11-09 10:39:34,388 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -21 predicate places. [2024-11-09 10:39:34,388 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 232 flow [2024-11-09 10:39:34,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:34,388 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:34,388 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:34,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 10:39:34,389 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:34,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 999774585, now seen corresponding path program 1 times [2024-11-09 10:39:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:34,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895485814] [2024-11-09 10:39:34,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:34,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:34,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895485814] [2024-11-09 10:39:34,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895485814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:34,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:34,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:39:34,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483670048] [2024-11-09 10:39:34,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:34,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:34,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:34,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:34,638 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-09 10:39:34,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:34,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:34,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-09 10:39:34,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:35,015 INFO L124 PetriNetUnfolderBase]: 2267/4483 cut-off events. [2024-11-09 10:39:35,015 INFO L125 PetriNetUnfolderBase]: For 2163/2300 co-relation queries the response was YES. [2024-11-09 10:39:35,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10666 conditions, 4483 events. 2267/4483 cut-off events. For 2163/2300 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 31516 event pairs, 1085 based on Foata normal form. 134/4080 useless extension candidates. Maximal degree in co-relation 8629. Up to 1964 conditions per place. [2024-11-09 10:39:35,038 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 66 selfloop transitions, 3 changer transitions 1/98 dead transitions. [2024-11-09 10:39:35,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 98 transitions, 451 flow [2024-11-09 10:39:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:35,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2024-11-09 10:39:35,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6261904761904762 [2024-11-09 10:39:35,040 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 232 flow. Second operand 3 states and 263 transitions. [2024-11-09 10:39:35,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 98 transitions, 451 flow [2024-11-09 10:39:35,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 437 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 10:39:35,046 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 219 flow [2024-11-09 10:39:35,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-09 10:39:35,047 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -27 predicate places. [2024-11-09 10:39:35,047 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 219 flow [2024-11-09 10:39:35,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:35,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:35,048 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:35,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 10:39:35,048 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:35,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1789630498, now seen corresponding path program 1 times [2024-11-09 10:39:35,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:35,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222017227] [2024-11-09 10:39:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:35,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:35,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:35,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222017227] [2024-11-09 10:39:35,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222017227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:35,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:35,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 10:39:35,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942105866] [2024-11-09 10:39:35,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:35,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:35,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:35,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:35,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:35,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-09 10:39:35,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:35,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:35,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-09 10:39:35,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:35,449 INFO L124 PetriNetUnfolderBase]: 1510/3221 cut-off events. [2024-11-09 10:39:35,449 INFO L125 PetriNetUnfolderBase]: For 2284/2358 co-relation queries the response was YES. [2024-11-09 10:39:35,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 3221 events. 1510/3221 cut-off events. For 2284/2358 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 22120 event pairs, 1103 based on Foata normal form. 74/2865 useless extension candidates. Maximal degree in co-relation 6225. Up to 2026 conditions per place. [2024-11-09 10:39:35,461 INFO L140 encePairwiseOnDemand]: 138/140 looper letters, 38 selfloop transitions, 0 changer transitions 24/89 dead transitions. [2024-11-09 10:39:35,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 403 flow [2024-11-09 10:39:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 10:39:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 10:39:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2024-11-09 10:39:35,466 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-09 10:39:35,466 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 219 flow. Second operand 3 states and 255 transitions. [2024-11-09 10:39:35,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 403 flow [2024-11-09 10:39:35,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 400 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 10:39:35,471 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 187 flow [2024-11-09 10:39:35,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-11-09 10:39:35,472 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -27 predicate places. [2024-11-09 10:39:35,472 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 187 flow [2024-11-09 10:39:35,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:35,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 10:39:35,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:35,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 10:39:35,473 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2024-11-09 10:39:35,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 10:39:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash -220300114, now seen corresponding path program 1 times [2024-11-09 10:39:35,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 10:39:35,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559477024] [2024-11-09 10:39:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 10:39:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 10:39:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 10:39:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 10:39:35,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 10:39:35,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559477024] [2024-11-09 10:39:35,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559477024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 10:39:35,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 10:39:35,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 10:39:35,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161090205] [2024-11-09 10:39:35,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 10:39:35,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 10:39:35,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 10:39:35,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 10:39:35,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 10:39:35,539 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2024-11-09 10:39:35,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:35,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 10:39:35,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2024-11-09 10:39:35,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 10:39:35,730 INFO L124 PetriNetUnfolderBase]: 1701/2927 cut-off events. [2024-11-09 10:39:35,730 INFO L125 PetriNetUnfolderBase]: For 1622/1702 co-relation queries the response was YES. [2024-11-09 10:39:35,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7524 conditions, 2927 events. 1701/2927 cut-off events. For 1622/1702 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16288 event pairs, 689 based on Foata normal form. 80/2799 useless extension candidates. Maximal degree in co-relation 7512. Up to 1358 conditions per place. [2024-11-09 10:39:35,738 INFO L140 encePairwiseOnDemand]: 135/140 looper letters, 0 selfloop transitions, 0 changer transitions 99/99 dead transitions. [2024-11-09 10:39:35,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 469 flow [2024-11-09 10:39:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 10:39:35,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 10:39:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2024-11-09 10:39:35,740 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6089285714285714 [2024-11-09 10:39:35,740 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 187 flow. Second operand 4 states and 341 transitions. [2024-11-09 10:39:35,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 469 flow [2024-11-09 10:39:35,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 453 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-09 10:39:35,744 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2024-11-09 10:39:35,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2024-11-09 10:39:35,745 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, -39 predicate places. [2024-11-09 10:39:35,745 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2024-11-09 10:39:35,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 10:39:35,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2024-11-09 10:39:35,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2024-11-09 10:39:35,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2024-11-09 10:39:35,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2024-11-09 10:39:35,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2024-11-09 10:39:35,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2024-11-09 10:39:35,747 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (18 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2024-11-09 10:39:35,748 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2024-11-09 10:39:35,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2024-11-09 10:39:35,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location monitor_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2024-11-09 10:39:35,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2024-11-09 10:39:35,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2024-11-09 10:39:35,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2024-11-09 10:39:35,749 INFO L782 garLoopResultBuilder]: Registering result SAFE for location counter_threadErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2024-11-09 10:39:35,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 10:39:35,749 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 10:39:35,753 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-09 10:39:35,754 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 10:39:35,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:39:35 BasicIcfg [2024-11-09 10:39:35,757 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 10:39:35,757 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 10:39:35,757 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 10:39:35,758 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 10:39:35,758 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:39:28" (3/4) ... [2024-11-09 10:39:35,759 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 10:39:35,761 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure monitor_thread [2024-11-09 10:39:35,761 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure counter_thread [2024-11-09 10:39:35,764 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2024-11-09 10:39:35,764 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-09 10:39:35,764 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 10:39:35,764 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-09 10:39:35,821 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-09 10:39:35,822 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-09 10:39:35,822 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 10:39:35,822 INFO L158 Benchmark]: Toolchain (without parser) took 9484.48ms. Allocated memory was 123.7MB in the beginning and 549.5MB in the end (delta: 425.7MB). Free memory was 49.4MB in the beginning and 286.3MB in the end (delta: -236.8MB). Peak memory consumption was 191.8MB. Max. memory is 16.1GB. [2024-11-09 10:39:35,822 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 123.7MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 10:39:35,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 740.97ms. Allocated memory was 123.7MB in the beginning and 165.7MB in the end (delta: 41.9MB). Free memory was 49.2MB in the beginning and 73.5MB in the end (delta: -24.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2024-11-09 10:39:35,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.25ms. Allocated memory is still 165.7MB. Free memory was 73.5MB in the beginning and 70.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 10:39:35,823 INFO L158 Benchmark]: Boogie Preprocessor took 65.76ms. Allocated memory is still 165.7MB. Free memory was 70.3MB in the beginning and 66.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 10:39:35,823 INFO L158 Benchmark]: RCFGBuilder took 791.45ms. Allocated memory is still 165.7MB. Free memory was 66.1MB in the beginning and 108.8MB in the end (delta: -42.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-09 10:39:35,823 INFO L158 Benchmark]: TraceAbstraction took 7749.05ms. Allocated memory was 165.7MB in the beginning and 549.5MB in the end (delta: 383.8MB). Free memory was 107.8MB in the beginning and 290.5MB in the end (delta: -182.7MB). Peak memory consumption was 203.2MB. Max. memory is 16.1GB. [2024-11-09 10:39:35,824 INFO L158 Benchmark]: Witness Printer took 64.58ms. Allocated memory is still 549.5MB. Free memory was 290.5MB in the beginning and 286.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 10:39:35,825 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 123.7MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 740.97ms. Allocated memory was 123.7MB in the beginning and 165.7MB in the end (delta: 41.9MB). Free memory was 49.2MB in the beginning and 73.5MB in the end (delta: -24.2MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.25ms. Allocated memory is still 165.7MB. Free memory was 73.5MB in the beginning and 70.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.76ms. Allocated memory is still 165.7MB. Free memory was 70.3MB in the beginning and 66.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 791.45ms. Allocated memory is still 165.7MB. Free memory was 66.1MB in the beginning and 108.8MB in the end (delta: -42.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7749.05ms. Allocated memory was 165.7MB in the beginning and 549.5MB in the end (delta: 383.8MB). Free memory was 107.8MB in the beginning and 290.5MB in the end (delta: -182.7MB). Peak memory consumption was 203.2MB. Max. memory is 16.1GB. * Witness Printer took 64.58ms. Allocated memory is still 549.5MB. Free memory was 290.5MB in the beginning and 286.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1835]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 159 locations, 27 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.6s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1015 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 660 mSDsluCounter, 62 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2183 IncrementalHoareTripleChecker+Invalid, 2224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 36 mSDtfsCounter, 2183 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=10, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 246 ConstructedInterpolants, 0 QuantifiedInterpolants, 537 SizeOfPredicates, 0 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 10:39:35,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE