./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_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_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB --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 af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:17:56,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:17:56,859 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:17:56,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:17:56,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:17:56,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:17:56,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:17:56,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:17:56,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:17:56,894 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:17:56,895 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:17:56,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:17:56,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:17:56,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:17:56,896 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:17:56,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:17:56,896 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:17:56,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:17:56,896 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:17:56,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:17:56,897 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:17:56,897 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:17:56,897 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:17:56,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:17:56,897 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:17:56,897 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:17:56,897 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:17:56,898 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:17:56,898 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:17:56,898 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:17:56,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:17:56,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:17:56,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:17:56,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:17:56,899 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:17:56,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:17:56,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:17:56,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:17:56,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:17:56,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:17:56,900 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_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB 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 -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 [2024-11-28 04:17:57,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:17:57,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:17:57,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:17:57,221 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:17:57,221 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:17:57,223 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-11-28 04:18:00,227 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/data/801a8d6d7/17f57d411c8846f2ab77a589f95c7488/FLAGd57a788ba [2024-11-28 04:18:00,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:18:00,625 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/sv-benchmarks/c/goblint-regression/28-race_reach_41-trylock_racefree.i [2024-11-28 04:18:00,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/data/801a8d6d7/17f57d411c8846f2ab77a589f95c7488/FLAGd57a788ba [2024-11-28 04:18:00,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/data/801a8d6d7/17f57d411c8846f2ab77a589f95c7488 [2024-11-28 04:18:00,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:18:00,686 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:18:00,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:18:00,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:18:00,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:18:00,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:18:00" (1/1) ... [2024-11-28 04:18:00,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c7e14bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:00, skipping insertion in model container [2024-11-28 04:18:00,698 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:18:00" (1/1) ... [2024-11-28 04:18:00,749 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:18:01,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:18:01,272 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:18:01,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:18:01,386 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:18:01,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01 WrapperNode [2024-11-28 04:18:01,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:18:01,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:18:01,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:18:01,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:18:01,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,438 INFO L138 Inliner]: procedures = 172, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2024-11-28 04:18:01,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:18:01,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:18:01,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:18:01,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:18:01,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,451 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,471 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-11-28 04:18:01,471 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,472 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,484 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,485 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,492 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:18:01,507 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:18:01,507 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:18:01,507 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:18:01,508 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (1/1) ... [2024-11-28 04:18:01,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:18:01,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:01,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:18:01,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41056862-e830-4d1c-9614-9511dec2ed72/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:18:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:18:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:18:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:18:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:18:01,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:18:01,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:18:01,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:18:01,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:18:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 04:18:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:18:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:18:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 04:18:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 04:18:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:18:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-28 04:18:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:18:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:18:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:18:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:18:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 04:18:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:18:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:18:01,588 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:18:01,768 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:18:01,771 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:18:02,105 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:18:02,105 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:18:02,292 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:18:02,292 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 04:18:02,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:18:02 BoogieIcfgContainer [2024-11-28 04:18:02,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:18:02,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:18:02,296 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:18:02,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:18:02,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:18:00" (1/3) ... [2024-11-28 04:18:02,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb29f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:18:02, skipping insertion in model container [2024-11-28 04:18:02,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:18:01" (2/3) ... [2024-11-28 04:18:02,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71cb29f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:18:02, skipping insertion in model container [2024-11-28 04:18:02,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:18:02" (3/3) ... [2024-11-28 04:18:02,304 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2024-11-28 04:18:02,347 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:18:02,348 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_41-trylock_racefree.i that has 2 procedures, 49 locations, 1 initial locations, 7 loop locations, and 6 error locations. [2024-11-28 04:18:02,348 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:18:02,414 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-28 04:18:02,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 62 transitions, 131 flow [2024-11-28 04:18:02,502 INFO L124 PetriNetUnfolderBase]: 19/95 cut-off events. [2024-11-28 04:18:02,505 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:18:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 19/95 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 357 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 57. Up to 6 conditions per place. [2024-11-28 04:18:02,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 62 transitions, 131 flow [2024-11-28 04:18:02,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 62 transitions, 131 flow [2024-11-28 04:18:02,520 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:18:02,536 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;@5d14d7ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:18:02,537 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 04:18:02,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:18:02,544 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:18:02,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:18:02,544 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:02,545 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:18:02,545 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)] === [2024-11-28 04:18:02,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash 346813, now seen corresponding path program 1 times [2024-11-28 04:18:02,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:02,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289805415] [2024-11-28 04:18:02,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:02,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289805415] [2024-11-28 04:18:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289805415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:02,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:02,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:02,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963017382] [2024-11-28 04:18:02,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:02,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:02,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:02,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:02,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:02,892 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 62 [2024-11-28 04:18:02,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 62 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:02,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:02,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 62 [2024-11-28 04:18:02,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:03,176 INFO L124 PetriNetUnfolderBase]: 156/469 cut-off events. [2024-11-28 04:18:03,176 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-28 04:18:03,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 469 events. 156/469 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2314 event pairs, 126 based on Foata normal form. 98/537 useless extension candidates. Maximal degree in co-relation 760. Up to 303 conditions per place. [2024-11-28 04:18:03,181 INFO L140 encePairwiseOnDemand]: 47/62 looper letters, 36 selfloop transitions, 2 changer transitions 1/57 dead transitions. [2024-11-28 04:18:03,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 57 transitions, 199 flow [2024-11-28 04:18:03,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:18:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:18:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-28 04:18:03,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-11-28 04:18:03,202 INFO L175 Difference]: Start difference. First operand has 52 places, 62 transitions, 131 flow. Second operand 3 states and 112 transitions. [2024-11-28 04:18:03,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 57 transitions, 199 flow [2024-11-28 04:18:03,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 199 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:18:03,214 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 105 flow [2024-11-28 04:18:03,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-11-28 04:18:03,221 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-28 04:18:03,221 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 105 flow [2024-11-28 04:18:03,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:03,221 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:03,221 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:18:03,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:18:03,222 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)] === [2024-11-28 04:18:03,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 346814, now seen corresponding path program 1 times [2024-11-28 04:18:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:03,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892121140] [2024-11-28 04:18:03,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:03,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:03,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892121140] [2024-11-28 04:18:03,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892121140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:03,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:03,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70110090] [2024-11-28 04:18:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:03,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:03,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:03,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:03,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:03,452 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 62 [2024-11-28 04:18:03,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:03,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:03,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 62 [2024-11-28 04:18:03,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:03,655 INFO L124 PetriNetUnfolderBase]: 136/414 cut-off events. [2024-11-28 04:18:03,656 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:18:03,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 414 events. 136/414 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2201 event pairs, 0 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 688. Up to 280 conditions per place. [2024-11-28 04:18:03,664 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 36 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-28 04:18:03,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 57 transitions, 201 flow [2024-11-28 04:18:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:18:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:18:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-28 04:18:03,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-11-28 04:18:03,666 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 105 flow. Second operand 3 states and 103 transitions. [2024-11-28 04:18:03,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 57 transitions, 201 flow [2024-11-28 04:18:03,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:18:03,673 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 111 flow [2024-11-28 04:18:03,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2024-11-28 04:18:03,674 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-28 04:18:03,674 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 111 flow [2024-11-28 04:18:03,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:03,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:03,674 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:18:03,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:18:03,678 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)] === [2024-11-28 04:18:03,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1822880046, now seen corresponding path program 1 times [2024-11-28 04:18:03,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:03,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59101494] [2024-11-28 04:18:03,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:03,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:04,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:04,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59101494] [2024-11-28 04:18:04,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59101494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:04,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:04,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:18:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387424200] [2024-11-28 04:18:04,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:04,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:18:04,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:04,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:18:04,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:18:04,086 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 62 [2024-11-28 04:18:04,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:04,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:04,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 62 [2024-11-28 04:18:04,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:04,199 INFO L124 PetriNetUnfolderBase]: 27/96 cut-off events. [2024-11-28 04:18:04,200 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-28 04:18:04,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 96 events. 27/96 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 220 event pairs, 16 based on Foata normal form. 20/115 useless extension candidates. Maximal degree in co-relation 175. Up to 57 conditions per place. [2024-11-28 04:18:04,201 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 23 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2024-11-28 04:18:04,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 128 flow [2024-11-28 04:18:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:18:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:18:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-11-28 04:18:04,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4314516129032258 [2024-11-28 04:18:04,206 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 111 flow. Second operand 4 states and 107 transitions. [2024-11-28 04:18:04,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 128 flow [2024-11-28 04:18:04,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 34 transitions, 122 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 04:18:04,209 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 54 flow [2024-11-28 04:18:04,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-11-28 04:18:04,210 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -23 predicate places. [2024-11-28 04:18:04,211 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 54 flow [2024-11-28 04:18:04,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:04,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:04,211 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 04:18:04,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:18:04,212 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)] === [2024-11-28 04:18:04,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash -674706266, now seen corresponding path program 1 times [2024-11-28 04:18:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:04,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158998262] [2024-11-28 04:18:04,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:04,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:18:04,248 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:18:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:18:04,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:18:04,284 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:18:04,286 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 04:18:04,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 04:18:04,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 04:18:04,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-28 04:18:04,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 04:18:04,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-28 04:18:04,291 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 04:18:04,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:18:04,292 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 04:18:04,297 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:18:04,297 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 04:18:04,338 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:18:04,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 87 transitions, 190 flow [2024-11-28 04:18:04,374 INFO L124 PetriNetUnfolderBase]: 33/165 cut-off events. [2024-11-28 04:18:04,374 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-28 04:18:04,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 165 events. 33/165 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 699 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 99. Up to 9 conditions per place. [2024-11-28 04:18:04,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 87 transitions, 190 flow [2024-11-28 04:18:04,380 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 87 transitions, 190 flow [2024-11-28 04:18:04,383 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:18:04,387 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;@5d14d7ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:18:04,387 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 04:18:04,390 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:18:04,392 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:18:04,392 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:18:04,392 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:04,392 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:18:04,393 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)] === [2024-11-28 04:18:04,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:04,393 INFO L85 PathProgramCache]: Analyzing trace with hash 433204, now seen corresponding path program 1 times [2024-11-28 04:18:04,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:04,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899456766] [2024-11-28 04:18:04,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:04,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:04,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:04,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899456766] [2024-11-28 04:18:04,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899456766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:04,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426955224] [2024-11-28 04:18:04,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:04,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:04,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:04,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:04,476 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 87 [2024-11-28 04:18:04,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 87 transitions, 190 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) [2024-11-28 04:18:04,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:04,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 87 [2024-11-28 04:18:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:05,600 INFO L124 PetriNetUnfolderBase]: 3291/6532 cut-off events. [2024-11-28 04:18:05,601 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-28 04:18:05,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11828 conditions, 6532 events. 3291/6532 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 49002 event pairs, 2772 based on Foata normal form. 1717/7881 useless extension candidates. Maximal degree in co-relation 8686. Up to 4600 conditions per place. [2024-11-28 04:18:05,644 INFO L140 encePairwiseOnDemand]: 66/87 looper letters, 56 selfloop transitions, 2 changer transitions 1/85 dead transitions. [2024-11-28 04:18:05,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 304 flow [2024-11-28 04:18:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:18:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:18:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-11-28 04:18:05,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2024-11-28 04:18:05,649 INFO L175 Difference]: Start difference. First operand has 72 places, 87 transitions, 190 flow. Second operand 3 states and 168 transitions. [2024-11-28 04:18:05,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 304 flow [2024-11-28 04:18:05,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:18:05,655 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 152 flow [2024-11-28 04:18:05,656 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-11-28 04:18:05,658 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-11-28 04:18:05,658 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 152 flow [2024-11-28 04:18:05,660 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) [2024-11-28 04:18:05,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:05,660 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:18:05,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:18:05,661 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)] === [2024-11-28 04:18:05,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:05,661 INFO L85 PathProgramCache]: Analyzing trace with hash 433205, now seen corresponding path program 1 times [2024-11-28 04:18:05,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906990878] [2024-11-28 04:18:05,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:05,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:05,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906990878] [2024-11-28 04:18:05,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906990878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:05,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:05,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:05,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684721087] [2024-11-28 04:18:05,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:05,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:05,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:05,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:05,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2024-11-28 04:18:05,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 152 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) [2024-11-28 04:18:05,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:05,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2024-11-28 04:18:05,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:06,457 INFO L124 PetriNetUnfolderBase]: 2893/5932 cut-off events. [2024-11-28 04:18:06,457 INFO L125 PetriNetUnfolderBase]: For 135/143 co-relation queries the response was YES. [2024-11-28 04:18:06,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10701 conditions, 5932 events. 2893/5932 cut-off events. For 135/143 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 44760 event pairs, 2599 based on Foata normal form. 1/5515 useless extension candidates. Maximal degree in co-relation 9833. Up to 4577 conditions per place. [2024-11-28 04:18:06,489 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 48 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-28 04:18:06,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 274 flow [2024-11-28 04:18:06,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:18:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:18:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-28 04:18:06,491 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5325670498084292 [2024-11-28 04:18:06,491 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 152 flow. Second operand 3 states and 139 transitions. [2024-11-28 04:18:06,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 274 flow [2024-11-28 04:18:06,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:18:06,503 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 162 flow [2024-11-28 04:18:06,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2024-11-28 04:18:06,505 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-11-28 04:18:06,505 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 162 flow [2024-11-28 04:18:06,505 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) [2024-11-28 04:18:06,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:06,505 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:18:06,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:18:06,505 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)] === [2024-11-28 04:18:06,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 654974738, now seen corresponding path program 1 times [2024-11-28 04:18:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251052245] [2024-11-28 04:18:06,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:06,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:06,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:06,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251052245] [2024-11-28 04:18:06,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251052245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:06,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:06,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:18:06,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12063839] [2024-11-28 04:18:06,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:06,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:18:06,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:06,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:18:06,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:18:06,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2024-11-28 04:18:06,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:06,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:06,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2024-11-28 04:18:06,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:07,365 INFO L124 PetriNetUnfolderBase]: 2884/5899 cut-off events. [2024-11-28 04:18:07,365 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-11-28 04:18:07,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 5899 events. 2884/5899 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 47049 event pairs, 99 based on Foata normal form. 10/5578 useless extension candidates. Maximal degree in co-relation 10778. Up to 4330 conditions per place. [2024-11-28 04:18:07,408 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 66 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2024-11-28 04:18:07,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 97 transitions, 364 flow [2024-11-28 04:18:07,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:18:07,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:18:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2024-11-28 04:18:07,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5373563218390804 [2024-11-28 04:18:07,410 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 162 flow. Second operand 4 states and 187 transitions. [2024-11-28 04:18:07,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 97 transitions, 364 flow [2024-11-28 04:18:07,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 362 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:18:07,415 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 179 flow [2024-11-28 04:18:07,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-11-28 04:18:07,416 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2024-11-28 04:18:07,416 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 179 flow [2024-11-28 04:18:07,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:07,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:07,416 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 04:18:07,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:18:07,417 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 04:18:07,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1218928590, now seen corresponding path program 1 times [2024-11-28 04:18:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358216974] [2024-11-28 04:18:07,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:07,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:07,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358216974] [2024-11-28 04:18:07,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358216974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:07,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:07,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:18:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698336247] [2024-11-28 04:18:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:07,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:18:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:07,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:18:07,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:18:07,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 87 [2024-11-28 04:18:07,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:07,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:07,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 87 [2024-11-28 04:18:07,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:08,429 INFO L124 PetriNetUnfolderBase]: 2704/5617 cut-off events. [2024-11-28 04:18:08,429 INFO L125 PetriNetUnfolderBase]: For 672/672 co-relation queries the response was YES. [2024-11-28 04:18:08,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10519 conditions, 5617 events. 2704/5617 cut-off events. For 672/672 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 44707 event pairs, 88 based on Foata normal form. 100/5424 useless extension candidates. Maximal degree in co-relation 7636. Up to 3490 conditions per place. [2024-11-28 04:18:08,456 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 82 selfloop transitions, 5 changer transitions 0/114 dead transitions. [2024-11-28 04:18:08,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 441 flow [2024-11-28 04:18:08,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:18:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:18:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-11-28 04:18:08,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.535632183908046 [2024-11-28 04:18:08,458 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 179 flow. Second operand 5 states and 233 transitions. [2024-11-28 04:18:08,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 441 flow [2024-11-28 04:18:08,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 432 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-28 04:18:08,463 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 174 flow [2024-11-28 04:18:08,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=174, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-11-28 04:18:08,464 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2024-11-28 04:18:08,464 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 174 flow [2024-11-28 04:18:08,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:08,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:08,465 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 04:18:08,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:18:08,465 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2024-11-28 04:18:08,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:08,465 INFO L85 PathProgramCache]: Analyzing trace with hash -867918952, now seen corresponding path program 1 times [2024-11-28 04:18:08,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:08,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416986595] [2024-11-28 04:18:08,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:18:08,491 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:18:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:18:08,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:18:08,512 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:18:08,512 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 04:18:08,512 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 04:18:08,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 04:18:08,513 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-28 04:18:08,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 04:18:08,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-28 04:18:08,516 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 04:18:08,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:18:08,516 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 04:18:08,518 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:18:08,518 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 04:18:08,548 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 04:18:08,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 112 transitions, 251 flow [2024-11-28 04:18:08,574 INFO L124 PetriNetUnfolderBase]: 50/256 cut-off events. [2024-11-28 04:18:08,574 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-28 04:18:08,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 256 events. 50/256 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1143 event pairs, 1 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 176. Up to 12 conditions per place. [2024-11-28 04:18:08,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 112 transitions, 251 flow [2024-11-28 04:18:08,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 112 transitions, 251 flow [2024-11-28 04:18:08,578 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:18:08,578 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;@5d14d7ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:18:08,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 04:18:08,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:18:08,580 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:18:08,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:18:08,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:08,580 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:18:08,580 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)] === [2024-11-28 04:18:08,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 544420, now seen corresponding path program 1 times [2024-11-28 04:18:08,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:08,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38383447] [2024-11-28 04:18:08,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:08,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38383447] [2024-11-28 04:18:08,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38383447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:08,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:08,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59905231] [2024-11-28 04:18:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:08,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:08,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:08,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:08,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:08,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 112 [2024-11-28 04:18:08,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:08,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:08,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 112 [2024-11-28 04:18:08,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:15,440 INFO L124 PetriNetUnfolderBase]: 51447/84449 cut-off events. [2024-11-28 04:18:15,440 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-28 04:18:15,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156793 conditions, 84449 events. 51447/84449 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 2093. Compared 749832 event pairs, 43669 based on Foata normal form. 25091/105232 useless extension candidates. Maximal degree in co-relation 57162. Up to 62348 conditions per place. [2024-11-28 04:18:16,063 INFO L140 encePairwiseOnDemand]: 85/112 looper letters, 76 selfloop transitions, 2 changer transitions 1/113 dead transitions. [2024-11-28 04:18:16,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 113 transitions, 411 flow [2024-11-28 04:18:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:18:16,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:18:16,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-11-28 04:18:16,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 04:18:16,066 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 251 flow. Second operand 3 states and 224 transitions. [2024-11-28 04:18:16,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 113 transitions, 411 flow [2024-11-28 04:18:16,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 113 transitions, 411 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 04:18:16,076 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 201 flow [2024-11-28 04:18:16,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2024-11-28 04:18:16,078 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -1 predicate places. [2024-11-28 04:18:16,078 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 201 flow [2024-11-28 04:18:16,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:16,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:16,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:18:16,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:18:16,079 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)] === [2024-11-28 04:18:16,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 544421, now seen corresponding path program 1 times [2024-11-28 04:18:16,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:16,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944677469] [2024-11-28 04:18:16,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:16,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:16,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944677469] [2024-11-28 04:18:16,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944677469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:16,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:16,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:16,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611645462] [2024-11-28 04:18:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:16,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:16,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:16,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:16,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:16,179 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 112 [2024-11-28 04:18:16,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:16,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:16,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 112 [2024-11-28 04:18:16,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:21,512 INFO L124 PetriNetUnfolderBase]: 44911/74973 cut-off events. [2024-11-28 04:18:21,512 INFO L125 PetriNetUnfolderBase]: For 2262/2336 co-relation queries the response was YES. [2024-11-28 04:18:21,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139442 conditions, 74973 events. 44911/74973 cut-off events. For 2262/2336 co-relation queries the response was YES. Maximal size of possible extension queue 1919. Compared 665464 event pairs, 43660 based on Foata normal form. 1/70603 useless extension candidates. Maximal degree in co-relation 127839. Up to 62325 conditions per place. [2024-11-28 04:18:21,822 INFO L140 encePairwiseOnDemand]: 108/112 looper letters, 59 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2024-11-28 04:18:21,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 345 flow [2024-11-28 04:18:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:18:21,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:18:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-11-28 04:18:21,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2024-11-28 04:18:21,824 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 201 flow. Second operand 3 states and 174 transitions. [2024-11-28 04:18:21,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 96 transitions, 345 flow [2024-11-28 04:18:21,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 96 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:18:21,979 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 211 flow [2024-11-28 04:18:21,979 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=211, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-11-28 04:18:21,980 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -1 predicate places. [2024-11-28 04:18:21,980 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 211 flow [2024-11-28 04:18:21,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:21,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:21,983 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 04:18:21,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:18:21,983 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)] === [2024-11-28 04:18:21,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:21,984 INFO L85 PathProgramCache]: Analyzing trace with hash 290204171, now seen corresponding path program 1 times [2024-11-28 04:18:21,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:21,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138942914] [2024-11-28 04:18:21,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:21,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:22,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138942914] [2024-11-28 04:18:22,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138942914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:22,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:18:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486755671] [2024-11-28 04:18:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:22,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:18:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:22,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:18:22,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:18:22,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 112 [2024-11-28 04:18:22,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:22,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:22,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 112 [2024-11-28 04:18:22,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:18:27,587 INFO L124 PetriNetUnfolderBase]: 44810/75193 cut-off events. [2024-11-28 04:18:27,587 INFO L125 PetriNetUnfolderBase]: For 3991/3991 co-relation queries the response was YES. [2024-11-28 04:18:27,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140362 conditions, 75193 events. 44810/75193 cut-off events. For 3991/3991 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 695808 event pairs, 7679 based on Foata normal form. 1120/73237 useless extension candidates. Maximal degree in co-relation 140279. Up to 47147 conditions per place. [2024-11-28 04:18:27,920 INFO L140 encePairwiseOnDemand]: 107/112 looper letters, 112 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2024-11-28 04:18:27,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 151 transitions, 573 flow [2024-11-28 04:18:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:18:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:18:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 299 transitions. [2024-11-28 04:18:27,922 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5339285714285714 [2024-11-28 04:18:27,922 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 211 flow. Second operand 5 states and 299 transitions. [2024-11-28 04:18:27,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 151 transitions, 573 flow [2024-11-28 04:18:27,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 151 transitions, 571 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:18:27,927 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 222 flow [2024-11-28 04:18:27,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2024-11-28 04:18:27,928 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2024-11-28 04:18:27,928 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 222 flow [2024-11-28 04:18:27,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:27,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:27,928 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 04:18:27,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:18:27,929 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)] === [2024-11-28 04:18:27,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 599434041, now seen corresponding path program 1 times [2024-11-28 04:18:27,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:27,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052995191] [2024-11-28 04:18:27,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:27,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:18:27,951 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:18:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:18:27,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:18:27,969 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:18:27,969 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-28 04:18:27,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-28 04:18:27,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-28 04:18:27,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2024-11-28 04:18:27,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-28 04:18:27,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-11-28 04:18:27,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-28 04:18:27,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:18:27,970 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-28 04:18:27,971 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 04:18:27,971 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 04:18:28,009 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 04:18:28,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 137 transitions, 314 flow [2024-11-28 04:18:28,062 INFO L124 PetriNetUnfolderBase]: 75/391 cut-off events. [2024-11-28 04:18:28,062 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-28 04:18:28,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 391 events. 75/391 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1892 event pairs, 6 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 280. Up to 32 conditions per place. [2024-11-28 04:18:28,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 137 transitions, 314 flow [2024-11-28 04:18:28,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 137 transitions, 314 flow [2024-11-28 04:18:28,071 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:18:28,072 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;@5d14d7ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:18:28,072 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 04:18:28,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:18:28,074 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-28 04:18:28,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 04:18:28,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:18:28,074 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 04:18:28,075 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)] === [2024-11-28 04:18:28,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash 680461, now seen corresponding path program 1 times [2024-11-28 04:18:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:28,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548287384] [2024-11-28 04:18:28,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:18:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:18:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:28,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:28,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548287384] [2024-11-28 04:18:28,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548287384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:18:28,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:18:28,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:18:28,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063829968] [2024-11-28 04:18:28,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:18:28,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:18:28,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:28,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:18:28,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:18:28,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 137 [2024-11-28 04:18:28,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 314 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) [2024-11-28 04:18:28,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:18:28,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 137 [2024-11-28 04:18:28,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand