./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC --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 b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:35:01,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:35:01,506 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 22:35:01,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:35:01,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:35:01,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:35:01,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:35:01,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:35:01,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:35:01,594 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:35:01,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:35:01,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:35:01,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:35:01,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:35:01,595 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:35:01,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:35:01,595 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:35:01,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:35:01,596 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:35:01,597 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:35:01,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:01,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:01,597 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:01,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:01,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:35:01,604 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:01,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:35:01,605 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:35:01,605 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_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC 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 -> b4439281d7e12bca3fd2bd39ebda4196e341f38fedf1c370a96bdabb4944cfe7 [2024-11-23 22:35:01,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:35:02,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:35:02,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:35:02,008 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:35:02,008 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:35:02,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-11-23 22:35:05,180 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/data/b80f4ad10/86bc1b5435244465bf89a25ae88cffc2/FLAG298ddb3e7 [2024-11-23 22:35:05,540 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:35:05,541 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/sv-benchmarks/c/goblint-regression/28-race_reach_08-cond_racefree.i [2024-11-23 22:35:05,563 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/data/b80f4ad10/86bc1b5435244465bf89a25ae88cffc2/FLAG298ddb3e7 [2024-11-23 22:35:05,579 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/data/b80f4ad10/86bc1b5435244465bf89a25ae88cffc2 [2024-11-23 22:35:05,581 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:35:05,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:35:05,585 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:05,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:35:05,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:35:05,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:05" (1/1) ... [2024-11-23 22:35:05,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b17c85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:05, skipping insertion in model container [2024-11-23 22:35:05,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:35:05" (1/1) ... [2024-11-23 22:35:05,653 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:35:06,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:06,167 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:35:06,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:35:06,334 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:35:06,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06 WrapperNode [2024-11-23 22:35:06,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:35:06,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:06,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:35:06,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:35:06,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,410 INFO L138 Inliner]: procedures = 271, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2024-11-23 22:35:06,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:35:06,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:35:06,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:35:06,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:35:06,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,458 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]. [2024-11-23 22:35:06,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,473 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:35:06,494 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:35:06,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:35:06,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:35:06,499 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (1/1) ... [2024-11-23 22:35:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:35:06,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:35:06,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:35:06,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5bf1b547-9437-4bed-9df3-6e433c72e0df/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:35:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:35:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:35:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-23 22:35:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-23 22:35:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-23 22:35:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:35:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-23 22:35:06,588 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-23 22:35:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:35:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:35:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-23 22:35:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-23 22:35:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:35:06,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:35:06,591 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 22:35:06,804 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:35:06,806 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:35:07,145 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 22:35:07,145 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:35:07,801 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:35:07,801 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 22:35:07,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:07 BoogieIcfgContainer [2024-11-23 22:35:07,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:35:07,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:35:07,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:35:07,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:35:07,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:35:05" (1/3) ... [2024-11-23 22:35:07,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e91dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:07, skipping insertion in model container [2024-11-23 22:35:07,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:35:06" (2/3) ... [2024-11-23 22:35:07,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e91dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:35:07, skipping insertion in model container [2024-11-23 22:35:07,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:35:07" (3/3) ... [2024-11-23 22:35:07,814 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_08-cond_racefree.i [2024-11-23 22:35:07,832 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:35:07,834 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_08-cond_racefree.i that has 2 procedures, 53 locations, 1 initial locations, 6 loop locations, and 6 error locations. [2024-11-23 22:35:07,834 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 22:35:07,901 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-23 22:35:07,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 67 transitions, 141 flow [2024-11-23 22:35:08,010 INFO L124 PetriNetUnfolderBase]: 21/105 cut-off events. [2024-11-23 22:35:08,015 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 22:35:08,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 21/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 380 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2024-11-23 22:35:08,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 67 transitions, 141 flow [2024-11-23 22:35:08,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 67 transitions, 141 flow [2024-11-23 22:35:08,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:35:08,059 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;@54f1e62e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:35:08,059 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-23 22:35:08,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:35:08,066 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-23 22:35:08,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 22:35:08,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:08,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:35:08,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:08,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash 473127, now seen corresponding path program 1 times [2024-11-23 22:35:08,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241098425] [2024-11-23 22:35:08,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:08,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:08,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:08,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:08,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241098425] [2024-11-23 22:35:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241098425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:08,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:35:08,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267457775] [2024-11-23 22:35:08,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:08,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:08,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:08,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:08,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:08,624 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 67 [2024-11-23 22:35:08,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 67 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-23 22:35:08,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:08,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 67 [2024-11-23 22:35:08,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:08,849 INFO L124 PetriNetUnfolderBase]: 179/511 cut-off events. [2024-11-23 22:35:08,849 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-23 22:35:08,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 511 events. 179/511 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2748 event pairs, 120 based on Foata normal form. 97/577 useless extension candidates. Maximal degree in co-relation 808. Up to 307 conditions per place. [2024-11-23 22:35:08,858 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 35 selfloop transitions, 2 changer transitions 1/63 dead transitions. [2024-11-23 22:35:08,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 63 transitions, 209 flow [2024-11-23 22:35:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:35:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-11-23 22:35:08,875 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6517412935323383 [2024-11-23 22:35:08,877 INFO L175 Difference]: Start difference. First operand has 56 places, 67 transitions, 141 flow. Second operand 3 states and 131 transitions. [2024-11-23 22:35:08,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 63 transitions, 209 flow [2024-11-23 22:35:08,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 209 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 22:35:08,885 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 117 flow [2024-11-23 22:35:08,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-23 22:35:08,892 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-23 22:35:08,894 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 117 flow [2024-11-23 22:35:08,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-23 22:35:08,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:08,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:35:08,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:35:08,895 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:08,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash 473128, now seen corresponding path program 1 times [2024-11-23 22:35:08,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:08,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836648078] [2024-11-23 22:35:08,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:08,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:09,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:09,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836648078] [2024-11-23 22:35:09,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836648078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:09,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:09,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:35:09,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358385274] [2024-11-23 22:35:09,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:09,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:09,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:09,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:09,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:09,218 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-11-23 22:35:09,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-23 22:35:09,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:09,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-11-23 22:35:09,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:09,427 INFO L124 PetriNetUnfolderBase]: 141/445 cut-off events. [2024-11-23 22:35:09,427 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-23 22:35:09,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 445 events. 141/445 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2400 event pairs, 61 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 712. Up to 267 conditions per place. [2024-11-23 22:35:09,433 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 35 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-23 22:35:09,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 63 transitions, 211 flow [2024-11-23 22:35:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:35:09,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-11-23 22:35:09,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6119402985074627 [2024-11-23 22:35:09,436 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 117 flow. Second operand 3 states and 123 transitions. [2024-11-23 22:35:09,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 63 transitions, 211 flow [2024-11-23 22:35:09,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 63 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:35:09,442 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 123 flow [2024-11-23 22:35:09,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2024-11-23 22:35:09,443 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-23 22:35:09,443 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 123 flow [2024-11-23 22:35:09,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-23 22:35:09,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:09,444 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-23 22:35:09,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:35:09,445 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:09,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:09,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1129105869, now seen corresponding path program 1 times [2024-11-23 22:35:09,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:09,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022588600] [2024-11-23 22:35:09,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:09,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:09,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:09,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022588600] [2024-11-23 22:35:09,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022588600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:09,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:09,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:35:09,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798698313] [2024-11-23 22:35:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:09,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:09,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:09,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:09,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:09,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 67 [2024-11-23 22:35:09,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-23 22:35:09,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:09,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 67 [2024-11-23 22:35:09,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:10,004 INFO L124 PetriNetUnfolderBase]: 129/433 cut-off events. [2024-11-23 22:35:10,005 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-23 22:35:10,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 433 events. 129/433 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2317 event pairs, 8 based on Foata normal form. 10/400 useless extension candidates. Maximal degree in co-relation 687. Up to 195 conditions per place. [2024-11-23 22:35:10,010 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 42 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-11-23 22:35:10,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 71 transitions, 247 flow [2024-11-23 22:35:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:10,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:35:10,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2024-11-23 22:35:10,014 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5895522388059702 [2024-11-23 22:35:10,014 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 123 flow. Second operand 4 states and 158 transitions. [2024-11-23 22:35:10,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 71 transitions, 247 flow [2024-11-23 22:35:10,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:35:10,017 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 121 flow [2024-11-23 22:35:10,018 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-11-23 22:35:10,019 INFO L279 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-23 22:35:10,019 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 121 flow [2024-11-23 22:35:10,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 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) [2024-11-23 22:35:10,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:10,020 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-23 22:35:10,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:35:10,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:10,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash -642543121, now seen corresponding path program 1 times [2024-11-23 22:35:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:10,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218163396] [2024-11-23 22:35:10,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:10,068 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:35:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:10,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 22:35:10,118 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:35:10,119 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-23 22:35:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-23 22:35:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-23 22:35:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-23 22:35:10,121 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-23 22:35:10,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-23 22:35:10,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-23 22:35:10,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:35:10,122 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-23 22:35:10,129 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 22:35:10,129 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-23 22:35:10,152 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 22:35:10,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 92 transitions, 200 flow [2024-11-23 22:35:10,176 INFO L124 PetriNetUnfolderBase]: 36/180 cut-off events. [2024-11-23 22:35:10,176 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-23 22:35:10,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 180 events. 36/180 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 749 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 109. Up to 9 conditions per place. [2024-11-23 22:35:10,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 92 transitions, 200 flow [2024-11-23 22:35:10,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 92 transitions, 200 flow [2024-11-23 22:35:10,181 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:35:10,182 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;@54f1e62e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:35:10,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-23 22:35:10,185 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:35:10,185 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-23 22:35:10,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 22:35:10,186 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:10,186 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:35:10,186 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:10,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash 564483, now seen corresponding path program 1 times [2024-11-23 22:35:10,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:10,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59116439] [2024-11-23 22:35:10,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:10,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:10,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:10,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59116439] [2024-11-23 22:35:10,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59116439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:10,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:35:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889379841] [2024-11-23 22:35:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:10,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:10,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:10,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:10,281 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2024-11-23 22:35:10,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 92 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-23 22:35:10,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:10,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2024-11-23 22:35:10,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:11,356 INFO L124 PetriNetUnfolderBase]: 3559/6891 cut-off events. [2024-11-23 22:35:11,356 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-23 22:35:11,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12422 conditions, 6891 events. 3559/6891 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52261 event pairs, 2735 based on Foata normal form. 1720/8316 useless extension candidates. Maximal degree in co-relation 9137. Up to 4731 conditions per place. [2024-11-23 22:35:11,428 INFO L140 encePairwiseOnDemand]: 72/92 looper letters, 55 selfloop transitions, 2 changer transitions 1/91 dead transitions. [2024-11-23 22:35:11,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 91 transitions, 314 flow [2024-11-23 22:35:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:35:11,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-23 22:35:11,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.677536231884058 [2024-11-23 22:35:11,431 INFO L175 Difference]: Start difference. First operand has 76 places, 92 transitions, 200 flow. Second operand 3 states and 187 transitions. [2024-11-23 22:35:11,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 91 transitions, 314 flow [2024-11-23 22:35:11,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 91 transitions, 314 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 22:35:11,438 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 164 flow [2024-11-23 22:35:11,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-11-23 22:35:11,439 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-23 22:35:11,439 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 164 flow [2024-11-23 22:35:11,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-11-23 22:35:11,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:11,440 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:35:11,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 22:35:11,440 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:11,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:11,443 INFO L85 PathProgramCache]: Analyzing trace with hash 564484, now seen corresponding path program 1 times [2024-11-23 22:35:11,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:11,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765746224] [2024-11-23 22:35:11,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:11,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:11,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:11,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765746224] [2024-11-23 22:35:11,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765746224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:11,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:11,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:35:11,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526322085] [2024-11-23 22:35:11,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:11,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:11,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:11,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:11,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:11,609 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-23 22:35:11,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-23 22:35:11,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:11,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-23 22:35:11,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:12,492 INFO L124 PetriNetUnfolderBase]: 2998/6181 cut-off events. [2024-11-23 22:35:12,492 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-11-23 22:35:12,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11022 conditions, 6181 events. 2998/6181 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 49125 event pairs, 1227 based on Foata normal form. 1/5827 useless extension candidates. Maximal degree in co-relation 9944. Up to 4562 conditions per place. [2024-11-23 22:35:12,532 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 47 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-11-23 22:35:12,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 284 flow [2024-11-23 22:35:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:35:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-23 22:35:12,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-23 22:35:12,534 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 164 flow. Second operand 3 states and 159 transitions. [2024-11-23 22:35:12,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 284 flow [2024-11-23 22:35:12,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:35:12,546 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 174 flow [2024-11-23 22:35:12,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-23 22:35:12,547 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-11-23 22:35:12,547 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 174 flow [2024-11-23 22:35:12,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2024-11-23 22:35:12,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:12,548 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-23 22:35:12,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:35:12,548 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:12,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:12,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1639217304, now seen corresponding path program 1 times [2024-11-23 22:35:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906840806] [2024-11-23 22:35:12,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:12,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:12,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:12,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:12,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906840806] [2024-11-23 22:35:12,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906840806] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:12,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:12,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:35:12,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40888489] [2024-11-23 22:35:12,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:12,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:12,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:12,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:12,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:12,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2024-11-23 22:35:12,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-23 22:35:12,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:12,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2024-11-23 22:35:12,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:13,520 INFO L124 PetriNetUnfolderBase]: 3067/6202 cut-off events. [2024-11-23 22:35:13,520 INFO L125 PetriNetUnfolderBase]: For 403/403 co-relation queries the response was YES. [2024-11-23 22:35:13,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11304 conditions, 6202 events. 3067/6202 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 48229 event pairs, 1177 based on Foata normal form. 10/6030 useless extension candidates. Maximal degree in co-relation 1136. Up to 4453 conditions per place. [2024-11-23 22:35:13,561 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 65 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2024-11-23 22:35:13,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 103 transitions, 374 flow [2024-11-23 22:35:13,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:35:13,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 214 transitions. [2024-11-23 22:35:13,562 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5815217391304348 [2024-11-23 22:35:13,562 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 174 flow. Second operand 4 states and 214 transitions. [2024-11-23 22:35:13,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 103 transitions, 374 flow [2024-11-23 22:35:13,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 103 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:35:13,567 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 191 flow [2024-11-23 22:35:13,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-23 22:35:13,567 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2024-11-23 22:35:13,567 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 191 flow [2024-11-23 22:35:13,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 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) [2024-11-23 22:35:13,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:13,568 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-23 22:35:13,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:35:13,568 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:13,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash 203480715, now seen corresponding path program 1 times [2024-11-23 22:35:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:13,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556695142] [2024-11-23 22:35:13,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:13,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:13,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:13,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556695142] [2024-11-23 22:35:13,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556695142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:13,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:35:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612548151] [2024-11-23 22:35:13,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:13,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:35:13,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:13,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:35:13,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:35:13,905 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2024-11-23 22:35:13,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 191 flow. Second operand has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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) [2024-11-23 22:35:13,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:13,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2024-11-23 22:35:13,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:14,799 INFO L124 PetriNetUnfolderBase]: 3120/6045 cut-off events. [2024-11-23 22:35:14,799 INFO L125 PetriNetUnfolderBase]: For 919/919 co-relation queries the response was YES. [2024-11-23 22:35:14,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11484 conditions, 6045 events. 3120/6045 cut-off events. For 919/919 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 44617 event pairs, 1851 based on Foata normal form. 100/6032 useless extension candidates. Maximal degree in co-relation 7077. Up to 3705 conditions per place. [2024-11-23 22:35:14,834 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 101 selfloop transitions, 6 changer transitions 0/140 dead transitions. [2024-11-23 22:35:14,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 140 transitions, 533 flow [2024-11-23 22:35:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:35:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 22:35:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 318 transitions. [2024-11-23 22:35:14,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-11-23 22:35:14,836 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 191 flow. Second operand 6 states and 318 transitions. [2024-11-23 22:35:14,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 140 transitions, 533 flow [2024-11-23 22:35:14,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 140 transitions, 524 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 22:35:14,843 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 195 flow [2024-11-23 22:35:14,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-11-23 22:35:14,844 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2024-11-23 22:35:14,844 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 195 flow [2024-11-23 22:35:14,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.833333333333336) internal successors, (221), 6 states have internal predecessors, (221), 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) [2024-11-23 22:35:14,845 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:14,845 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-23 22:35:14,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:35:14,847 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:14,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2012935434, now seen corresponding path program 1 times [2024-11-23 22:35:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900185783] [2024-11-23 22:35:14,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:14,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:14,887 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:35:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:14,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 22:35:14,917 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:35:14,918 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-23 22:35:14,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-23 22:35:14,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-23 22:35:14,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-23 22:35:14,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-23 22:35:14,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-23 22:35:14,918 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-23 22:35:14,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:35:14,918 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-23 22:35:14,919 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 22:35:14,919 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-23 22:35:14,953 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 22:35:14,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 117 transitions, 261 flow [2024-11-23 22:35:14,985 INFO L124 PetriNetUnfolderBase]: 54/276 cut-off events. [2024-11-23 22:35:14,985 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-23 22:35:14,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 276 events. 54/276 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1238 event pairs, 1 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 191. Up to 12 conditions per place. [2024-11-23 22:35:14,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 117 transitions, 261 flow [2024-11-23 22:35:14,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 117 transitions, 261 flow [2024-11-23 22:35:14,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:35:14,994 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;@54f1e62e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:35:14,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-23 22:35:14,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:35:14,996 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-23 22:35:14,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 22:35:14,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:14,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:35:14,997 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:14,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:14,997 INFO L85 PathProgramCache]: Analyzing trace with hash 680664, now seen corresponding path program 1 times [2024-11-23 22:35:14,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:14,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019749430] [2024-11-23 22:35:14,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:15,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019749430] [2024-11-23 22:35:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019749430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:15,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:15,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:35:15,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421526738] [2024-11-23 22:35:15,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:15,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:15,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:15,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:15,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 117 [2024-11-23 22:35:15,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-23 22:35:15,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:15,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 117 [2024-11-23 22:35:15,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:22,469 INFO L124 PetriNetUnfolderBase]: 53626/87325 cut-off events. [2024-11-23 22:35:22,470 INFO L125 PetriNetUnfolderBase]: For 1236/1236 co-relation queries the response was YES. [2024-11-23 22:35:22,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161738 conditions, 87325 events. 53626/87325 cut-off events. For 1236/1236 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 782049 event pairs, 43458 based on Foata normal form. 25258/109403 useless extension candidates. Maximal degree in co-relation 58750. Up to 63282 conditions per place. [2024-11-23 22:35:22,973 INFO L140 encePairwiseOnDemand]: 91/117 looper letters, 75 selfloop transitions, 2 changer transitions 1/119 dead transitions. [2024-11-23 22:35:22,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 119 transitions, 421 flow [2024-11-23 22:35:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:35:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2024-11-23 22:35:22,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-11-23 22:35:22,975 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 261 flow. Second operand 3 states and 243 transitions. [2024-11-23 22:35:22,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 119 transitions, 421 flow [2024-11-23 22:35:22,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 22:35:22,983 INFO L231 Difference]: Finished difference. Result has 95 places, 91 transitions, 213 flow [2024-11-23 22:35:22,984 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=95, PETRI_TRANSITIONS=91} [2024-11-23 22:35:22,984 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-23 22:35:22,984 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 91 transitions, 213 flow [2024-11-23 22:35:22,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2024-11-23 22:35:22,985 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:22,985 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:35:22,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:35:22,985 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:22,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:22,985 INFO L85 PathProgramCache]: Analyzing trace with hash 680665, now seen corresponding path program 1 times [2024-11-23 22:35:22,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:22,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454698406] [2024-11-23 22:35:22,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:22,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:23,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:23,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454698406] [2024-11-23 22:35:23,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454698406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:23,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:23,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:35:23,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750357821] [2024-11-23 22:35:23,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:23,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:23,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:23,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:23,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:23,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-11-23 22:35:23,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 91 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-11-23 22:35:23,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:23,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-11-23 22:35:23,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:28,929 INFO L124 PetriNetUnfolderBase]: 46695/77911 cut-off events. [2024-11-23 22:35:28,930 INFO L125 PetriNetUnfolderBase]: For 4252/4252 co-relation queries the response was YES. [2024-11-23 22:35:29,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145198 conditions, 77911 events. 46695/77911 cut-off events. For 4252/4252 co-relation queries the response was YES. Maximal size of possible extension queue 2097. Compared 708932 event pairs, 27954 based on Foata normal form. 1/74614 useless extension candidates. Maximal degree in co-relation 130511. Up to 63779 conditions per place. [2024-11-23 22:35:29,619 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 58 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2024-11-23 22:35:29,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 102 transitions, 355 flow [2024-11-23 22:35:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:35:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:35:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2024-11-23 22:35:29,621 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5527065527065527 [2024-11-23 22:35:29,621 INFO L175 Difference]: Start difference. First operand has 95 places, 91 transitions, 213 flow. Second operand 3 states and 194 transitions. [2024-11-23 22:35:29,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 102 transitions, 355 flow [2024-11-23 22:35:30,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:35:30,087 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 223 flow [2024-11-23 22:35:30,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2024-11-23 22:35:30,088 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, -1 predicate places. [2024-11-23 22:35:30,088 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 223 flow [2024-11-23 22:35:30,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2024-11-23 22:35:30,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:30,088 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-23 22:35:30,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:35:30,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:30,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1564915126, now seen corresponding path program 1 times [2024-11-23 22:35:30,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:30,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819717719] [2024-11-23 22:35:30,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:30,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:30,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:30,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819717719] [2024-11-23 22:35:30,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819717719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:30,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:30,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:35:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028805073] [2024-11-23 22:35:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:30,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:30,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:30,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:30,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:30,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 117 [2024-11-23 22:35:30,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-23 22:35:30,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:30,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 117 [2024-11-23 22:35:30,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:36,092 INFO L124 PetriNetUnfolderBase]: 46978/77592 cut-off events. [2024-11-23 22:35:36,092 INFO L125 PetriNetUnfolderBase]: For 4989/4989 co-relation queries the response was YES. [2024-11-23 22:35:36,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146410 conditions, 77592 events. 46978/77592 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 2029. Compared 692105 event pairs, 40104 based on Foata normal form. 10/75627 useless extension candidates. Maximal degree in co-relation 131847. Up to 64104 conditions per place. [2024-11-23 22:35:36,493 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 77 selfloop transitions, 4 changer transitions 0/123 dead transitions. [2024-11-23 22:35:36,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 123 transitions, 451 flow [2024-11-23 22:35:36,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:35:36,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-23 22:35:36,496 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2024-11-23 22:35:36,496 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 223 flow. Second operand 4 states and 258 transitions. [2024-11-23 22:35:36,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 123 transitions, 451 flow [2024-11-23 22:35:36,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 123 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:35:36,502 INFO L231 Difference]: Finished difference. Result has 98 places, 94 transitions, 246 flow [2024-11-23 22:35:36,502 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=98, PETRI_TRANSITIONS=94} [2024-11-23 22:35:36,503 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2024-11-23 22:35:36,503 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 94 transitions, 246 flow [2024-11-23 22:35:36,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-11-23 22:35:36,504 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:36,504 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-23 22:35:36,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:35:36,504 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:36,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1278527090, now seen corresponding path program 1 times [2024-11-23 22:35:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242770950] [2024-11-23 22:35:36,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:36,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242770950] [2024-11-23 22:35:36,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242770950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:36,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:36,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 22:35:36,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596152806] [2024-11-23 22:35:36,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:36,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 22:35:36,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:36,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 22:35:36,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 22:35:36,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 117 [2024-11-23 22:35:36,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 94 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-23 22:35:36,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:36,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 117 [2024-11-23 22:35:36,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:42,748 INFO L124 PetriNetUnfolderBase]: 47362/77087 cut-off events. [2024-11-23 22:35:42,749 INFO L125 PetriNetUnfolderBase]: For 11596/11596 co-relation queries the response was YES. [2024-11-23 22:35:42,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147626 conditions, 77087 events. 47362/77087 cut-off events. For 11596/11596 co-relation queries the response was YES. Maximal size of possible extension queue 2034. Compared 670513 event pairs, 31066 based on Foata normal form. 1100/76776 useless extension candidates. Maximal degree in co-relation 100471. Up to 49843 conditions per place. [2024-11-23 22:35:43,383 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 130 selfloop transitions, 7 changer transitions 0/178 dead transitions. [2024-11-23 22:35:43,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 178 transitions, 684 flow [2024-11-23 22:35:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:35:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 22:35:43,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 396 transitions. [2024-11-23 22:35:43,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2024-11-23 22:35:43,385 INFO L175 Difference]: Start difference. First operand has 98 places, 94 transitions, 246 flow. Second operand 6 states and 396 transitions. [2024-11-23 22:35:43,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 178 transitions, 684 flow [2024-11-23 22:35:43,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 178 transitions, 675 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 22:35:43,409 INFO L231 Difference]: Finished difference. Result has 101 places, 94 transitions, 253 flow [2024-11-23 22:35:43,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=101, PETRI_TRANSITIONS=94} [2024-11-23 22:35:43,409 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 5 predicate places. [2024-11-23 22:35:43,409 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 94 transitions, 253 flow [2024-11-23 22:35:43,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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) [2024-11-23 22:35:43,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:43,410 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:35:43,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 22:35:43,410 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:43,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:43,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1160441566, now seen corresponding path program 1 times [2024-11-23 22:35:43,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:43,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489840987] [2024-11-23 22:35:43,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:43,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:43,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:43,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489840987] [2024-11-23 22:35:43,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489840987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:43,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:43,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:35:43,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577010964] [2024-11-23 22:35:43,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:43,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:35:43,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:43,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:35:43,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:35:43,503 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 117 [2024-11-23 22:35:43,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 94 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-23 22:35:43,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:43,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 117 [2024-11-23 22:35:43,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:35:49,363 INFO L124 PetriNetUnfolderBase]: 43951/73799 cut-off events. [2024-11-23 22:35:49,363 INFO L125 PetriNetUnfolderBase]: For 19749/19749 co-relation queries the response was YES. [2024-11-23 22:35:49,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144686 conditions, 73799 events. 43951/73799 cut-off events. For 19749/19749 co-relation queries the response was YES. Maximal size of possible extension queue 2038. Compared 673043 event pairs, 25995 based on Foata normal form. 10/71612 useless extension candidates. Maximal degree in co-relation 13319. Up to 59677 conditions per place. [2024-11-23 22:35:49,651 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 76 selfloop transitions, 3 changer transitions 0/121 dead transitions. [2024-11-23 22:35:49,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 121 transitions, 463 flow [2024-11-23 22:35:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:35:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:35:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 260 transitions. [2024-11-23 22:35:49,653 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-23 22:35:49,653 INFO L175 Difference]: Start difference. First operand has 101 places, 94 transitions, 253 flow. Second operand 4 states and 260 transitions. [2024-11-23 22:35:49,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 121 transitions, 463 flow [2024-11-23 22:35:49,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 121 transitions, 445 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-23 22:35:49,662 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 235 flow [2024-11-23 22:35:49,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2024-11-23 22:35:49,662 INFO L279 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2024-11-23 22:35:49,663 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 235 flow [2024-11-23 22:35:49,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-11-23 22:35:49,663 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:49,663 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-23 22:35:49,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:35:49,663 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:49,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -23255340, now seen corresponding path program 1 times [2024-11-23 22:35:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726344718] [2024-11-23 22:35:49,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:49,711 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 22:35:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 22:35:49,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 22:35:49,744 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-23 22:35:49,745 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-11-23 22:35:49,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2024-11-23 22:35:49,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2024-11-23 22:35:49,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-11-23 22:35:49,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 7 remaining) [2024-11-23 22:35:49,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 7 remaining) [2024-11-23 22:35:49,745 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-11-23 22:35:49,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:35:49,746 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-23 22:35:49,746 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-23 22:35:49,746 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-23 22:35:49,784 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-23 22:35:49,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 142 transitions, 324 flow [2024-11-23 22:35:49,823 INFO L124 PetriNetUnfolderBase]: 80/416 cut-off events. [2024-11-23 22:35:49,823 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-23 22:35:49,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 416 events. 80/416 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2022 event pairs, 6 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 300. Up to 32 conditions per place. [2024-11-23 22:35:49,827 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 142 transitions, 324 flow [2024-11-23 22:35:49,830 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 142 transitions, 324 flow [2024-11-23 22:35:49,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:35:49,833 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;@54f1e62e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:35:49,833 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-23 22:35:49,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:35:49,835 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-23 22:35:49,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 22:35:49,835 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:35:49,835 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:35:49,836 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-11-23 22:35:49,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:35:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 821670, now seen corresponding path program 1 times [2024-11-23 22:35:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:35:49,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842884463] [2024-11-23 22:35:49,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:35:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:35:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:35:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:35:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:35:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842884463] [2024-11-23 22:35:49,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842884463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:35:49,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:35:49,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:35:49,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874726393] [2024-11-23 22:35:49,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:35:49,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:35:49,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:35:49,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:35:49,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:35:49,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 142 [2024-11-23 22:35:49,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 142 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2024-11-23 22:35:49,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:35:49,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 142 [2024-11-23 22:35:49,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand