./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1 --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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:47:51,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:47:51,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 08:47:51,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:47:51,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:47:51,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:47:51,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:47:51,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:47:51,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:47:51,833 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:47:51,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:47:51,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:47:51,833 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:47:51,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:47:51,833 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:47:51,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:47:51,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:47:51,835 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:51,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:51,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:47:51,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:47:51,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:47:51,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:47:51,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:47:51,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:47:51,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:47:51,836 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1 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 -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2024-12-02 08:47:52,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:47:52,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:47:52,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:47:52,083 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:47:52,083 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:47:52,084 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-12-02 08:47:54,734 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/data/4464f946e/470e10d1a99d4424b9661ad2eac084df/FLAG30cd09176 [2024-12-02 08:47:54,943 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:47:54,944 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2024-12-02 08:47:54,956 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/data/4464f946e/470e10d1a99d4424b9661ad2eac084df/FLAG30cd09176 [2024-12-02 08:47:54,970 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/data/4464f946e/470e10d1a99d4424b9661ad2eac084df [2024-12-02 08:47:54,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:47:54,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:47:54,975 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:54,975 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:47:54,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:47:54,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:54" (1/1) ... [2024-12-02 08:47:54,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5197c0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:54, skipping insertion in model container [2024-12-02 08:47:54,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:47:54" (1/1) ... [2024-12-02 08:47:55,006 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:47:55,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:55,303 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:47:55,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:47:55,376 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:47:55,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55 WrapperNode [2024-12-02 08:47:55,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:47:55,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:55,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:47:55,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:47:55,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,411 INFO L138 Inliner]: procedures = 173, calls = 42, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 260 [2024-12-02 08:47:55,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:47:55,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:47:55,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:47:55,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:47:55,421 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,439 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 5, 2, 5, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 0, 5, 0]. The 2 writes are split as follows [0, 0, 1, 0, 1]. [2024-12-02 08:47:55,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,447 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,455 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:47:55,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:47:55,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:47:55,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:47:55,456 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (1/1) ... [2024-12-02 08:47:55,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:47:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:47:55,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:47:55,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_398f7f6b-3c5c-4bff-a09e-d7f1701169c3/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:47:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-02 08:47:55,498 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 08:47:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-02 08:47:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 08:47:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:47:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:47:55,501 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 08:47:55,625 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:47:55,627 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:47:55,932 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:47:55,932 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:47:56,354 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:47:56,354 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-12-02 08:47:56,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:56 BoogieIcfgContainer [2024-12-02 08:47:56,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:47:56,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:47:56,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:47:56,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:47:56,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:47:54" (1/3) ... [2024-12-02 08:47:56,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a99399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:56, skipping insertion in model container [2024-12-02 08:47:56,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:47:55" (2/3) ... [2024-12-02 08:47:56,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a99399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:47:56, skipping insertion in model container [2024-12-02 08:47:56,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:47:56" (3/3) ... [2024-12-02 08:47:56,364 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2024-12-02 08:47:56,383 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:47:56,385 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_04-munge_racefree.i that has 3 procedures, 92 locations, 1 initial locations, 14 loop locations, and 11 error locations. [2024-12-02 08:47:56,385 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:47:56,459 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 08:47:56,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 123 transitions, 266 flow [2024-12-02 08:47:56,578 INFO L124 PetriNetUnfolderBase]: 47/234 cut-off events. [2024-12-02 08:47:56,580 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-12-02 08:47:56,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 234 events. 47/234 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1243 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 139. Up to 8 conditions per place. [2024-12-02 08:47:56,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 123 transitions, 266 flow [2024-12-02 08:47:56,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 123 transitions, 266 flow [2024-12-02 08:47:56,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:47:56,612 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;@21488a09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:47:56,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-12-02 08:47:56,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:47:56,619 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:47:56,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:47:56,619 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:47:56,620 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:47:56,620 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-12-02 08:47:56,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:56,626 INFO L85 PathProgramCache]: Analyzing trace with hash 720921, now seen corresponding path program 1 times [2024-12-02 08:47:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:56,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912826888] [2024-12-02 08:47:56,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:56,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:47:56,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:56,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912826888] [2024-12-02 08:47:56,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912826888] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:56,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:56,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:47:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901677277] [2024-12-02 08:47:56,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:56,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:47:56,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:57,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:47:57,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:47:57,039 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 123 [2024-12-02 08:47:57,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 123 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 08:47:57,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:47:57,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 123 [2024-12-02 08:47:57,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:47:58,643 INFO L124 PetriNetUnfolderBase]: 5855/11699 cut-off events. [2024-12-02 08:47:58,644 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-12-02 08:47:58,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20834 conditions, 11699 events. 5855/11699 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 97144 event pairs, 4068 based on Foata normal form. 2515/13221 useless extension candidates. Maximal degree in co-relation 19836. Up to 6749 conditions per place. [2024-12-02 08:47:58,727 INFO L140 encePairwiseOnDemand]: 95/123 looper letters, 90 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2024-12-02 08:47:58,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 131 transitions, 466 flow [2024-12-02 08:47:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:47:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:47:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2024-12-02 08:47:58,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7018970189701897 [2024-12-02 08:47:58,772 INFO L175 Difference]: Start difference. First operand has 98 places, 123 transitions, 266 flow. Second operand 3 states and 259 transitions. [2024-12-02 08:47:58,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 131 transitions, 466 flow [2024-12-02 08:47:58,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 131 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:47:58,786 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 214 flow [2024-12-02 08:47:58,789 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2024-12-02 08:47:58,792 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -2 predicate places. [2024-12-02 08:47:58,792 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 214 flow [2024-12-02 08:47:58,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2024-12-02 08:47:58,793 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:47:58,793 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:47:58,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:47:58,793 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-12-02 08:47:58,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:47:58,794 INFO L85 PathProgramCache]: Analyzing trace with hash 720922, now seen corresponding path program 1 times [2024-12-02 08:47:58,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:47:58,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42318294] [2024-12-02 08:47:58,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:47:58,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:47:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:47:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:47:58,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:47:58,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42318294] [2024-12-02 08:47:58,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42318294] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:47:58,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:47:58,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:47:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477683451] [2024-12-02 08:47:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:47:58,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:47:58,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:47:58,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:47:58,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:47:58,998 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 123 [2024-12-02 08:47:58,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2024-12-02 08:47:58,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:47:58,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 123 [2024-12-02 08:47:58,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:48:00,148 INFO L124 PetriNetUnfolderBase]: 4948/10321 cut-off events. [2024-12-02 08:48:00,148 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-12-02 08:48:00,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18536 conditions, 10321 events. 4948/10321 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 86129 event pairs, 2160 based on Foata normal form. 1/9280 useless extension candidates. Maximal degree in co-relation 17754. Up to 7669 conditions per place. [2024-12-02 08:48:00,216 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 72 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-12-02 08:48:00,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 400 flow [2024-12-02 08:48:00,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:48:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 08:48:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2024-12-02 08:48:00,218 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5474254742547425 [2024-12-02 08:48:00,218 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 214 flow. Second operand 3 states and 202 transitions. [2024-12-02 08:48:00,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 400 flow [2024-12-02 08:48:00,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 114 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 08:48:00,237 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 220 flow [2024-12-02 08:48:00,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2024-12-02 08:48:00,238 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -1 predicate places. [2024-12-02 08:48:00,238 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 220 flow [2024-12-02 08:48:00,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2024-12-02 08:48:00,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:48:00,239 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-12-02 08:48:00,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:48:00,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-12-02 08:48:00,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:00,240 INFO L85 PathProgramCache]: Analyzing trace with hash 91120611, now seen corresponding path program 1 times [2024-12-02 08:48:00,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:00,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097186972] [2024-12-02 08:48:00,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:00,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:48:00,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:00,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097186972] [2024-12-02 08:48:00,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097186972] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:00,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:00,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:48:00,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288687301] [2024-12-02 08:48:00,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:00,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:48:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:00,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:48:00,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:48:00,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 123 [2024-12-02 08:48:00,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 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) [2024-12-02 08:48:00,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:48:00,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 123 [2024-12-02 08:48:00,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:48:00,662 INFO L124 PetriNetUnfolderBase]: 58/185 cut-off events. [2024-12-02 08:48:00,663 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-12-02 08:48:00,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 185 events. 58/185 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 669 event pairs, 32 based on Foata normal form. 38/219 useless extension candidates. Maximal degree in co-relation 359. Up to 111 conditions per place. [2024-12-02 08:48:00,664 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 41 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-12-02 08:48:00,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 210 flow [2024-12-02 08:48:00,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:48:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 08:48:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2024-12-02 08:48:00,667 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4247967479674797 [2024-12-02 08:48:00,667 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 220 flow. Second operand 4 states and 209 transitions. [2024-12-02 08:48:00,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 210 flow [2024-12-02 08:48:00,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 204 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 08:48:00,669 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 82 flow [2024-12-02 08:48:00,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-12-02 08:48:00,670 INFO L279 CegarLoopForPetriNet]: 98 programPoint places, -55 predicate places. [2024-12-02 08:48:00,670 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 82 flow [2024-12-02 08:48:00,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.4) internal successors, (212), 5 states have internal predecessors, (212), 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) [2024-12-02 08:48:00,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:48:00,671 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-12-02 08:48:00,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:48:00,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-12-02 08:48:00,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1470227559, now seen corresponding path program 1 times [2024-12-02 08:48:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:00,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400015104] [2024-12-02 08:48:00,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:00,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:48:00,712 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:48:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:48:00,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:48:00,744 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:48:00,745 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-12-02 08:48:00,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2024-12-02 08:48:00,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-12-02 08:48:00,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-12-02 08:48:00,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-12-02 08:48:00,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-12-02 08:48:00,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-12-02 08:48:00,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-12-02 08:48:00,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-12-02 08:48:00,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-12-02 08:48:00,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2024-12-02 08:48:00,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2024-12-02 08:48:00,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2024-12-02 08:48:00,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2024-12-02 08:48:00,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-12-02 08:48:00,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:48:00,748 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 08:48:00,751 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:48:00,751 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 08:48:00,802 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2024-12-02 08:48:00,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 217 transitions, 478 flow [2024-12-02 08:48:00,912 INFO L124 PetriNetUnfolderBase]: 161/719 cut-off events. [2024-12-02 08:48:00,912 INFO L125 PetriNetUnfolderBase]: For 72/79 co-relation queries the response was YES. [2024-12-02 08:48:00,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 808 conditions, 719 events. 161/719 cut-off events. For 72/79 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4827 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 445. Up to 32 conditions per place. [2024-12-02 08:48:00,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 217 transitions, 478 flow [2024-12-02 08:48:00,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 217 transitions, 478 flow [2024-12-02 08:48:00,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:48:00,930 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;@21488a09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:48:00,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-12-02 08:48:00,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:48:00,932 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:48:00,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:48:00,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:48:00,933 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:48:00,933 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2024-12-02 08:48:00,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:48:00,933 INFO L85 PathProgramCache]: Analyzing trace with hash 934416, now seen corresponding path program 1 times [2024-12-02 08:48:00,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:48:00,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759407778] [2024-12-02 08:48:00,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:48:00,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:48:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:48:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:48:01,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:48:01,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759407778] [2024-12-02 08:48:01,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759407778] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:48:01,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:48:01,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 08:48:01,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753814349] [2024-12-02 08:48:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:48:01,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:48:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:48:01,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:48:01,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:48:01,032 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 217 [2024-12-02 08:48:01,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 217 transitions, 478 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2024-12-02 08:48:01,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:48:01,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 217 [2024-12-02 08:48:01,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand