./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.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 ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:11:01,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:11:01,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:11:01,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:11:01,309 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:11:01,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:11:01,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:11:01,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:11:01,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:11:01,359 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:11:01,360 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:11:01,360 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:11:01,361 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:11:01,361 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:11:01,363 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:11:01,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:11:01,364 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:11:01,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:11:01,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:11:01,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:11:01,365 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:11:01,368 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:11:01,368 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:11:01,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:11:01,369 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:11:01,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:11:01,369 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:11:01,370 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:11:01,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:11:01,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:11:01,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:11:01,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:11:01,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:11:01,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:11:01,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:11:01,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:11:01,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:11:01,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:11:01,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:11:01,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:11:01,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:11:01,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:11:01,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce37da4bed964b4727d03a98278bc58de76d7006f2d65a8a42fb0f55b5b34a9c [2024-10-24 19:11:01,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:11:01,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:11:01,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:11:01,666 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:11:01,666 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:11:01,668 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-24 19:11:03,037 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:11:03,300 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:11:03,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2024-10-24 19:11:03,318 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3a45ba0/27c4cbdfba8f420c98ff88c6f8a152cc/FLAG2476fc68e [2024-10-24 19:11:03,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db3a45ba0/27c4cbdfba8f420c98ff88c6f8a152cc [2024-10-24 19:11:03,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:11:03,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:11:03,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:11:03,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:11:03,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:11:03,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:11:03" (1/1) ... [2024-10-24 19:11:03,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63d5f583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:03, skipping insertion in model container [2024-10-24 19:11:03,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:11:03" (1/1) ... [2024-10-24 19:11:03,676 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:11:04,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:11:04,164 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:11:04,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:11:04,293 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:11:04,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04 WrapperNode [2024-10-24 19:11:04,294 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:11:04,295 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:11:04,295 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:11:04,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:11:04,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,359 INFO L138 Inliner]: procedures = 252, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 175 [2024-10-24 19:11:04,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:11:04,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:11:04,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:11:04,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:11:04,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,373 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,377 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,414 INFO L175 MemorySlicer]: Split 19 memory accesses to 5 slices as follows [2, 5, 5, 5, 2]. 26 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 0, 1]. [2024-10-24 19:11:04,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,427 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:11:04,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:11:04,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:11:04,450 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:11:04,451 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (1/1) ... [2024-10-24 19:11:04,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:11:04,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:11:04,488 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) [2024-10-24 19:11:04,495 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 [2024-10-24 19:11:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 19:11:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 19:11:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 19:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 19:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 19:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 19:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 19:11:04,538 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 19:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:11:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 19:11:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 19:11:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 19:11:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 19:11:04,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:11:04,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:11:04,541 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:11:04,695 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:11:04,696 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:11:04,962 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:11:04,962 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:11:05,182 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:11:05,183 INFO L314 CfgBuilder]: Removed 16 assume(true) statements. [2024-10-24 19:11:05,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:11:05 BoogieIcfgContainer [2024-10-24 19:11:05,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:11:05,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:11:05,187 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:11:05,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:11:05,190 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:11:03" (1/3) ... [2024-10-24 19:11:05,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c1e38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:11:05, skipping insertion in model container [2024-10-24 19:11:05,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:11:04" (2/3) ... [2024-10-24 19:11:05,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c1e38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:11:05, skipping insertion in model container [2024-10-24 19:11:05,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:11:05" (3/3) ... [2024-10-24 19:11:05,193 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2024-10-24 19:11:05,212 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:11:05,212 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-24 19:11:05,212 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:11:05,266 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-24 19:11:05,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 90 transitions, 187 flow [2024-10-24 19:11:05,372 INFO L124 PetriNetUnfolderBase]: 22/125 cut-off events. [2024-10-24 19:11:05,372 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 19:11:05,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 125 events. 22/125 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 481 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 85. Up to 4 conditions per place. [2024-10-24 19:11:05,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 90 transitions, 187 flow [2024-10-24 19:11:05,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 90 transitions, 187 flow [2024-10-24 19:11:05,398 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:11:05,406 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;@2e955361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:11:05,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 19:11:05,410 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:11:05,411 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 19:11:05,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:11:05,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:05,412 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:11:05,412 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:05,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash 470618, now seen corresponding path program 1 times [2024-10-24 19:11:05,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:05,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841013155] [2024-10-24 19:11:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:05,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:05,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:11:05,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841013155] [2024-10-24 19:11:05,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841013155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:11:05,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:11:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:11:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965182564] [2024-10-24 19:11:05,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:11:05,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:11:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:11:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:11:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:11:05,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 90 [2024-10-24 19:11:05,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 90 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-10-24 19:11:05,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:11:05,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 90 [2024-10-24 19:11:05,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:11:06,137 INFO L124 PetriNetUnfolderBase]: 417/1219 cut-off events. [2024-10-24 19:11:06,138 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 19:11:06,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2100 conditions, 1219 events. 417/1219 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7516 event pairs, 353 based on Foata normal form. 220/1383 useless extension candidates. Maximal degree in co-relation 2039. Up to 778 conditions per place. [2024-10-24 19:11:06,151 INFO L140 encePairwiseOnDemand]: 70/90 looper letters, 65 selfloop transitions, 2 changer transitions 1/94 dead transitions. [2024-10-24 19:11:06,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 331 flow [2024-10-24 19:11:06,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:11:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:11:06,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2024-10-24 19:11:06,164 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-10-24 19:11:06,167 INFO L175 Difference]: Start difference. First operand has 75 places, 90 transitions, 187 flow. Second operand 3 states and 176 transitions. [2024-10-24 19:11:06,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 331 flow [2024-10-24 19:11:06,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 331 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:11:06,176 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 151 flow [2024-10-24 19:11:06,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-24 19:11:06,184 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-10-24 19:11:06,184 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 151 flow [2024-10-24 19:11:06,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-10-24 19:11:06,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:06,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:11:06,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:11:06,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:06,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash 470619, now seen corresponding path program 1 times [2024-10-24 19:11:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:06,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799121271] [2024-10-24 19:11:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:06,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:11:06,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799121271] [2024-10-24 19:11:06,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799121271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:11:06,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:11:06,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:11:06,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994448314] [2024-10-24 19:11:06,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:11:06,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:11:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:11:06,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:11:06,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:11:06,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 90 [2024-10-24 19:11:06,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-24 19:11:06,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:11:06,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 90 [2024-10-24 19:11:06,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:11:06,577 INFO L124 PetriNetUnfolderBase]: 384/1114 cut-off events. [2024-10-24 19:11:06,578 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-10-24 19:11:06,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1114 events. 384/1114 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 7203 event pairs, 15 based on Foata normal form. 1/1034 useless extension candidates. Maximal degree in co-relation 1894. Up to 771 conditions per place. [2024-10-24 19:11:06,584 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 65 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2024-10-24 19:11:06,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 333 flow [2024-10-24 19:11:06,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:11:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:11:06,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-10-24 19:11:06,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-10-24 19:11:06,586 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 151 flow. Second operand 3 states and 156 transitions. [2024-10-24 19:11:06,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 333 flow [2024-10-24 19:11:06,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:11:06,593 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 157 flow [2024-10-24 19:11:06,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-10-24 19:11:06,595 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-10-24 19:11:06,595 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 157 flow [2024-10-24 19:11:06,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2024-10-24 19:11:06,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:06,596 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 19:11:06,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:11:06,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:06,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:06,598 INFO L85 PathProgramCache]: Analyzing trace with hash 849514490, now seen corresponding path program 1 times [2024-10-24 19:11:06,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:06,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165851304] [2024-10-24 19:11:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:06,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:06,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:11:06,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165851304] [2024-10-24 19:11:06,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165851304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:11:06,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790797210] [2024-10-24 19:11:06,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:06,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:11:06,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:11:06,727 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) [2024-10-24 19:11:06,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 19:11:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:06,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:11:06,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:11:06,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-24 19:11:06,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:06,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:11:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:07,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790797210] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:11:07,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:11:07,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 19:11:07,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462449749] [2024-10-24 19:11:07,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:11:07,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 19:11:07,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:11:07,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 19:11:07,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 19:11:07,053 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 90 [2024-10-24 19:11:07,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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) [2024-10-24 19:11:07,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:11:07,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 90 [2024-10-24 19:11:07,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:11:07,182 INFO L124 PetriNetUnfolderBase]: 70/222 cut-off events. [2024-10-24 19:11:07,183 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-10-24 19:11:07,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 222 events. 70/222 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 798 event pairs, 28 based on Foata normal form. 46/263 useless extension candidates. Maximal degree in co-relation 415. Up to 138 conditions per place. [2024-10-24 19:11:07,185 INFO L140 encePairwiseOnDemand]: 86/90 looper letters, 51 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-10-24 19:11:07,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 252 flow [2024-10-24 19:11:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:11:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:11:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-10-24 19:11:07,188 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-10-24 19:11:07,188 INFO L175 Difference]: Start difference. First operand has 74 places, 70 transitions, 157 flow. Second operand 4 states and 167 transitions. [2024-10-24 19:11:07,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 252 flow [2024-10-24 19:11:07,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-24 19:11:07,191 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 94 flow [2024-10-24 19:11:07,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-10-24 19:11:07,192 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -27 predicate places. [2024-10-24 19:11:07,192 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 94 flow [2024-10-24 19:11:07,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 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) [2024-10-24 19:11:07,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:07,195 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-10-24 19:11:07,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 19:11:07,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:11:07,400 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:07,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash 565145892, now seen corresponding path program 1 times [2024-10-24 19:11:07,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:07,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986860677] [2024-10-24 19:11:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:11:07,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 19:11:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:11:07,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 19:11:07,454 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 19:11:07,456 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-24 19:11:07,459 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-10-24 19:11:07,459 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-10-24 19:11:07,459 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-10-24 19:11:07,460 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-10-24 19:11:07,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-24 19:11:07,461 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-24 19:11:07,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 19:11:07,462 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-24 19:11:07,465 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 19:11:07,465 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 19:11:07,508 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-24 19:11:07,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 141 transitions, 298 flow [2024-10-24 19:11:07,536 INFO L124 PetriNetUnfolderBase]: 41/223 cut-off events. [2024-10-24 19:11:07,536 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-24 19:11:07,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 223 events. 41/223 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1029 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 144. Up to 6 conditions per place. [2024-10-24 19:11:07,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 141 transitions, 298 flow [2024-10-24 19:11:07,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 141 transitions, 298 flow [2024-10-24 19:11:07,544 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:11:07,546 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;@2e955361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:11:07,546 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 19:11:07,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:11:07,547 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 19:11:07,548 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:11:07,548 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:07,548 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:11:07,548 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:07,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:07,548 INFO L85 PathProgramCache]: Analyzing trace with hash 610631, now seen corresponding path program 1 times [2024-10-24 19:11:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757755888] [2024-10-24 19:11:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:07,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:11:07,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757755888] [2024-10-24 19:11:07,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757755888] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:11:07,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:11:07,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:11:07,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457493020] [2024-10-24 19:11:07,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:11:07,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:11:07,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:11:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:11:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:11:07,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 141 [2024-10-24 19:11:07,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-10-24 19:11:07,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:11:07,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 141 [2024-10-24 19:11:07,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:11:11,391 INFO L124 PetriNetUnfolderBase]: 20611/40354 cut-off events. [2024-10-24 19:11:11,392 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-10-24 19:11:11,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71989 conditions, 40354 events. 20611/40354 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 377806 event pairs, 17426 based on Foata normal form. 8616/46783 useless extension candidates. Maximal degree in co-relation 60927. Up to 27900 conditions per place. [2024-10-24 19:11:11,609 INFO L140 encePairwiseOnDemand]: 109/141 looper letters, 113 selfloop transitions, 2 changer transitions 1/156 dead transitions. [2024-10-24 19:11:11,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 156 transitions, 560 flow [2024-10-24 19:11:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:11:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:11:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-10-24 19:11:11,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6855791962174941 [2024-10-24 19:11:11,615 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 298 flow. Second operand 3 states and 290 transitions. [2024-10-24 19:11:11,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 156 transitions, 560 flow [2024-10-24 19:11:11,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 156 transitions, 560 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:11:11,622 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 238 flow [2024-10-24 19:11:11,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-10-24 19:11:11,626 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-10-24 19:11:11,626 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 238 flow [2024-10-24 19:11:11,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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) [2024-10-24 19:11:11,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:11,627 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:11:11,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 19:11:11,627 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:11,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash 610632, now seen corresponding path program 1 times [2024-10-24 19:11:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:11,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293142925] [2024-10-24 19:11:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:11,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:11:11,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293142925] [2024-10-24 19:11:11,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293142925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:11:11,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:11:11,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:11:11,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073289174] [2024-10-24 19:11:11,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:11:11,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:11:11,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:11:11,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:11:11,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:11:11,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 141 [2024-10-24 19:11:11,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-10-24 19:11:11,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:11:11,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 141 [2024-10-24 19:11:11,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:11:14,530 INFO L124 PetriNetUnfolderBase]: 18236/37344 cut-off events. [2024-10-24 19:11:14,531 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-10-24 19:11:14,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65947 conditions, 37344 events. 18236/37344 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 968. Compared 360868 event pairs, 14096 based on Foata normal form. 1/35006 useless extension candidates. Maximal degree in co-relation 61203. Up to 27850 conditions per place. [2024-10-24 19:11:14,757 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 91 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2024-10-24 19:11:14,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 134 transitions, 474 flow [2024-10-24 19:11:14,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:11:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:11:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-10-24 19:11:14,759 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5295508274231678 [2024-10-24 19:11:14,759 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 238 flow. Second operand 3 states and 224 transitions. [2024-10-24 19:11:14,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 134 transitions, 474 flow [2024-10-24 19:11:14,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 134 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:11:14,834 INFO L231 Difference]: Finished difference. Result has 113 places, 110 transitions, 248 flow [2024-10-24 19:11:14,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=113, PETRI_TRANSITIONS=110} [2024-10-24 19:11:14,836 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-10-24 19:11:14,836 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 110 transitions, 248 flow [2024-10-24 19:11:14,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 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) [2024-10-24 19:11:14,837 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:14,838 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-24 19:11:14,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 19:11:14,838 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:14,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1311241686, now seen corresponding path program 1 times [2024-10-24 19:11:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326332081] [2024-10-24 19:11:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:14,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:11:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326332081] [2024-10-24 19:11:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326332081] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 19:11:14,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616817883] [2024-10-24 19:11:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:14,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 19:11:14,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:11:14,978 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 19:11:14,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 19:11:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:15,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:11:15,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:11:15,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-24 19:11:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:15,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 19:11:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:15,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616817883] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 19:11:15,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 19:11:15,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-24 19:11:15,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022456007] [2024-10-24 19:11:15,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 19:11:15,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 19:11:15,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:11:15,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 19:11:15,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-10-24 19:11:15,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 141 [2024-10-24 19:11:15,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 110 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 states have internal predecessors, (311), 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) [2024-10-24 19:11:15,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:11:15,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 141 [2024-10-24 19:11:15,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:11:17,930 INFO L124 PetriNetUnfolderBase]: 18641/36207 cut-off events. [2024-10-24 19:11:17,931 INFO L125 PetriNetUnfolderBase]: For 1390/1390 co-relation queries the response was YES. [2024-10-24 19:11:17,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65868 conditions, 36207 events. 18641/36207 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 338739 event pairs, 3661 based on Foata normal form. 622/35073 useless extension candidates. Maximal degree in co-relation 24397. Up to 21965 conditions per place. [2024-10-24 19:11:18,105 INFO L140 encePairwiseOnDemand]: 137/141 looper letters, 184 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2024-10-24 19:11:18,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 228 transitions, 858 flow [2024-10-24 19:11:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:11:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:11:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2024-10-24 19:11:18,107 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5687943262411348 [2024-10-24 19:11:18,107 INFO L175 Difference]: Start difference. First operand has 113 places, 110 transitions, 248 flow. Second operand 5 states and 401 transitions. [2024-10-24 19:11:18,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 228 transitions, 858 flow [2024-10-24 19:11:18,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 228 transitions, 856 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:11:18,114 INFO L231 Difference]: Finished difference. Result has 115 places, 109 transitions, 250 flow [2024-10-24 19:11:18,115 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=141, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2024-10-24 19:11:18,116 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2024-10-24 19:11:18,116 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 250 flow [2024-10-24 19:11:18,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.42857142857143) internal successors, (311), 7 states have internal predecessors, (311), 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) [2024-10-24 19:11:18,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:18,117 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-10-24 19:11:18,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 19:11:18,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-24 19:11:18,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:18,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash 412934969, now seen corresponding path program 1 times [2024-10-24 19:11:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926488745] [2024-10-24 19:11:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:11:18,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 19:11:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:11:18,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 19:11:18,359 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 19:11:18,359 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-10-24 19:11:18,359 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-10-24 19:11:18,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-10-24 19:11:18,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-10-24 19:11:18,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-10-24 19:11:18,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-10-24 19:11:18,360 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-10-24 19:11:18,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 19:11:18,361 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-24 19:11:18,363 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 19:11:18,363 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 19:11:18,401 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 19:11:18,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 192 transitions, 411 flow [2024-10-24 19:11:18,440 INFO L124 PetriNetUnfolderBase]: 63/342 cut-off events. [2024-10-24 19:11:18,440 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-24 19:11:18,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 342 events. 63/342 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1681 event pairs, 1 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 234. Up to 12 conditions per place. [2024-10-24 19:11:18,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 192 transitions, 411 flow [2024-10-24 19:11:18,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 192 transitions, 411 flow [2024-10-24 19:11:18,450 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:11:18,451 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;@2e955361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:11:18,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-10-24 19:11:18,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:11:18,453 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-24 19:11:18,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:11:18,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:11:18,453 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-24 19:11:18,454 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-10-24 19:11:18,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:11:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash 801287, now seen corresponding path program 1 times [2024-10-24 19:11:18,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:11:18,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314462253] [2024-10-24 19:11:18,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:11:18,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:11:18,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:11:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:11:18,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:11:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314462253] [2024-10-24 19:11:18,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314462253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:11:18,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:11:18,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:11:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195317668] [2024-10-24 19:11:18,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:11:18,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:11:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:11:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:11:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:11:18,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 192 [2024-10-24 19:11:18,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 192 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-10-24 19:11:18,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:11:18,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 192 [2024-10-24 19:11:18,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand