./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:40:09,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:40:09,487 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:40:09,500 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:40:09,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:40:09,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:40:09,545 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:40:09,545 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:40:09,545 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:40:09,545 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:40:09,546 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:40:09,546 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:40:09,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:40:09,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:40:09,546 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:40:09,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:40:09,547 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:40:09,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:40:09,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:40:09,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:40:09,547 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:40:09,547 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:40:09,548 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:40:09,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:40:09,548 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:40:09,548 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:40:09,548 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:40:09,548 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:40:09,548 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:40:09,548 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:40:09,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:09,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:09,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:09,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:09,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:40:09,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:09,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:09,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:09,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:09,550 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:40:09,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:40:09,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:40:09,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:40:09,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:40:09,552 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:40:09,552 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:40:09,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:40:09,553 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_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2024-11-28 03:40:09,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:40:09,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:40:09,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:40:09,977 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:40:09,977 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:40:09,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-11-28 03:40:13,730 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/data/490a47306/37c3822b35c84c2d8dc8de9bbedd41c1/FLAG532372be6 [2024-11-28 03:40:14,251 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:40:14,252 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-11-28 03:40:14,277 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/data/490a47306/37c3822b35c84c2d8dc8de9bbedd41c1/FLAG532372be6 [2024-11-28 03:40:14,307 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/data/490a47306/37c3822b35c84c2d8dc8de9bbedd41c1 [2024-11-28 03:40:14,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:40:14,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:40:14,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:14,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:40:14,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:40:14,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e26bc5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:14, skipping insertion in model container [2024-11-28 03:40:14,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:14" (1/1) ... [2024-11-28 03:40:14,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:40:14,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:14,867 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:40:14,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:15,023 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:40:15,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15 WrapperNode [2024-11-28 03:40:15,025 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:15,026 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:15,026 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:40:15,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:40:15,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,094 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2024-11-28 03:40:15,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:15,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:40:15,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:40:15,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:40:15,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,113 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,144 INFO L175 MemorySlicer]: Split 18 memory accesses to 4 slices as follows [2, 5, 6, 5]. 33 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 5, 1, 5]. The 2 writes are split as follows [0, 0, 2, 0]. [2024-11-28 03:40:15,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,145 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,158 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,163 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,169 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:40:15,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:40:15,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:40:15,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:40:15,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (1/1) ... [2024-11-28 03:40:15,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:15,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:15,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:40:15,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69eed3cc-91e6-4337-be1d-d9663247a22b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:40:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:40:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:40:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:40:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:40:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:40:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:40:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:40:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:40:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 03:40:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:40:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 03:40:15,285 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 03:40:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:40:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:40:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:40:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:40:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 03:40:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:40:15,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:40:15,288 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 03:40:15,524 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:40:15,528 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:40:15,907 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:40:15,908 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:40:16,164 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:40:16,164 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 03:40:16,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:16 BoogieIcfgContainer [2024-11-28 03:40:16,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:40:16,168 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:40:16,168 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:40:16,174 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:40:16,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:40:14" (1/3) ... [2024-11-28 03:40:16,175 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d60f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:16, skipping insertion in model container [2024-11-28 03:40:16,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:15" (2/3) ... [2024-11-28 03:40:16,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d60f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:16, skipping insertion in model container [2024-11-28 03:40:16,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:16" (3/3) ... [2024-11-28 03:40:16,179 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2024-11-28 03:40:16,196 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:40:16,198 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_22-deref_read_racefree.i that has 2 procedures, 57 locations, 1 initial locations, 5 loop locations, and 13 error locations. [2024-11-28 03:40:16,198 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:40:16,260 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:40:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 67 transitions, 138 flow [2024-11-28 03:40:16,396 INFO L124 PetriNetUnfolderBase]: 14/95 cut-off events. [2024-11-28 03:40:16,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:40:16,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 95 events. 14/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 365 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 64. Up to 4 conditions per place. [2024-11-28 03:40:16,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 67 transitions, 138 flow [2024-11-28 03:40:16,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 67 transitions, 138 flow [2024-11-28 03:40:16,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:40:16,450 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;@62b96ae7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:40:16,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-28 03:40:16,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:40:16,456 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 03:40:16,456 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:40:16,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:16,457 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:40:16,457 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-28 03:40:16,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 330792, now seen corresponding path program 1 times [2024-11-28 03:40:16,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247058677] [2024-11-28 03:40:16,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:16,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:16,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:16,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247058677] [2024-11-28 03:40:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247058677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:16,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:16,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:40:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820046010] [2024-11-28 03:40:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:16,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:16,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:16,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:16,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-28 03:40:16,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 67 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:16,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:16,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-28 03:40:16,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:17,205 INFO L124 PetriNetUnfolderBase]: 154/487 cut-off events. [2024-11-28 03:40:17,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:40:17,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 487 events. 154/487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2784 event pairs, 0 based on Foata normal form. 94/532 useless extension candidates. Maximal degree in co-relation 804. Up to 323 conditions per place. [2024-11-28 03:40:17,216 INFO L140 encePairwiseOnDemand]: 53/67 looper letters, 38 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-11-28 03:40:17,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 222 flow [2024-11-28 03:40:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:40:17,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-28 03:40:17,242 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7213930348258707 [2024-11-28 03:40:17,245 INFO L175 Difference]: Start difference. First operand has 60 places, 67 transitions, 138 flow. Second operand 3 states and 145 transitions. [2024-11-28 03:40:17,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 222 flow [2024-11-28 03:40:17,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 222 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:40:17,258 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 126 flow [2024-11-28 03:40:17,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-11-28 03:40:17,266 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2024-11-28 03:40:17,268 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 126 flow [2024-11-28 03:40:17,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:17,269 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:17,269 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:40:17,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:40:17,270 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-28 03:40:17,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:17,272 INFO L85 PathProgramCache]: Analyzing trace with hash 563120008, now seen corresponding path program 1 times [2024-11-28 03:40:17,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:17,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722778530] [2024-11-28 03:40:17,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:17,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:17,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:17,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722778530] [2024-11-28 03:40:17,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722778530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:17,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:17,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:40:17,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468986178] [2024-11-28 03:40:17,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:17,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:40:17,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:17,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:40:17,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:17,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 67 [2024-11-28 03:40:17,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:17,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:17,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 67 [2024-11-28 03:40:17,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:17,764 INFO L124 PetriNetUnfolderBase]: 33/114 cut-off events. [2024-11-28 03:40:17,764 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-28 03:40:17,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 114 events. 33/114 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 332 event pairs, 0 based on Foata normal form. 24/130 useless extension candidates. Maximal degree in co-relation 202. Up to 69 conditions per place. [2024-11-28 03:40:17,765 INFO L140 encePairwiseOnDemand]: 63/67 looper letters, 27 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-11-28 03:40:17,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 164 flow [2024-11-28 03:40:17,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:40:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-11-28 03:40:17,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5485074626865671 [2024-11-28 03:40:17,770 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 126 flow. Second operand 4 states and 147 transitions. [2024-11-28 03:40:17,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 164 flow [2024-11-28 03:40:17,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:40:17,772 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 78 flow [2024-11-28 03:40:17,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-11-28 03:40:17,773 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -19 predicate places. [2024-11-28 03:40:17,773 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 78 flow [2024-11-28 03:40:17,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:17,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:17,773 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-28 03:40:17,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:40:17,774 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-28 03:40:17,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:17,774 INFO L85 PathProgramCache]: Analyzing trace with hash 276851470, now seen corresponding path program 1 times [2024-11-28 03:40:17,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:17,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984600288] [2024-11-28 03:40:17,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:17,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:40:17,800 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:40:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:40:17,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:40:17,834 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:40:17,835 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-28 03:40:17,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (20 of 22 remaining) [2024-11-28 03:40:17,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2024-11-28 03:40:17,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2024-11-28 03:40:17,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (17 of 22 remaining) [2024-11-28 03:40:17,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (16 of 22 remaining) [2024-11-28 03:40:17,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2024-11-28 03:40:17,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2024-11-28 03:40:17,838 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2024-11-28 03:40:17,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 22 remaining) [2024-11-28 03:40:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 22 remaining) [2024-11-28 03:40:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2024-11-28 03:40:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2024-11-28 03:40:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 22 remaining) [2024-11-28 03:40:17,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 22 remaining) [2024-11-28 03:40:17,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:40:17,841 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 03:40:17,844 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:40:17,844 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 03:40:17,880 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:40:17,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 103 transitions, 216 flow [2024-11-28 03:40:17,916 INFO L124 PetriNetUnfolderBase]: 24/160 cut-off events. [2024-11-28 03:40:17,916 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 03:40:17,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 160 events. 24/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 727 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 99. Up to 6 conditions per place. [2024-11-28 03:40:17,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 103 transitions, 216 flow [2024-11-28 03:40:17,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 103 transitions, 216 flow [2024-11-28 03:40:17,926 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:40:17,931 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;@62b96ae7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:40:17,931 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-28 03:40:17,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:40:17,936 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 03:40:17,936 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:40:17,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:17,936 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:40:17,937 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 03:40:17,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:17,937 INFO L85 PathProgramCache]: Analyzing trace with hash 433071, now seen corresponding path program 1 times [2024-11-28 03:40:17,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:17,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217633371] [2024-11-28 03:40:17,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:17,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:18,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:18,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:18,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217633371] [2024-11-28 03:40:18,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217633371] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:18,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:18,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:40:18,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40225985] [2024-11-28 03:40:18,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:18,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:18,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:18,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:18,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:18,083 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 103 [2024-11-28 03:40:18,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 103 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:18,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:18,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 103 [2024-11-28 03:40:18,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:19,907 INFO L124 PetriNetUnfolderBase]: 3982/8767 cut-off events. [2024-11-28 03:40:19,907 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-28 03:40:19,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15134 conditions, 8767 events. 3982/8767 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 76060 event pairs, 1848 based on Foata normal form. 1954/9916 useless extension candidates. Maximal degree in co-relation 1217. Up to 6311 conditions per place. [2024-11-28 03:40:19,985 INFO L140 encePairwiseOnDemand]: 83/103 looper letters, 51 selfloop transitions, 2 changer transitions 0/100 dead transitions. [2024-11-28 03:40:19,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 100 transitions, 316 flow [2024-11-28 03:40:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:19,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:40:19,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2024-11-28 03:40:19,991 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7055016181229773 [2024-11-28 03:40:19,992 INFO L175 Difference]: Start difference. First operand has 92 places, 103 transitions, 216 flow. Second operand 3 states and 218 transitions. [2024-11-28 03:40:19,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 100 transitions, 316 flow [2024-11-28 03:40:19,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:40:19,995 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 196 flow [2024-11-28 03:40:19,998 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-11-28 03:40:19,999 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2024-11-28 03:40:19,999 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 196 flow [2024-11-28 03:40:20,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:20,001 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:20,001 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:40:20,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:40:20,001 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 03:40:20,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 534857292, now seen corresponding path program 1 times [2024-11-28 03:40:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:20,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917549422] [2024-11-28 03:40:20,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:20,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:20,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:20,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917549422] [2024-11-28 03:40:20,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917549422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:20,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:20,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:40:20,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782451670] [2024-11-28 03:40:20,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:20,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:40:20,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:20,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:40:20,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:20,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 103 [2024-11-28 03:40:20,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:20,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:20,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 103 [2024-11-28 03:40:20,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:21,756 INFO L124 PetriNetUnfolderBase]: 3861/8382 cut-off events. [2024-11-28 03:40:21,757 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-11-28 03:40:21,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14955 conditions, 8382 events. 3861/8382 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 71246 event pairs, 1560 based on Foata normal form. 24/7954 useless extension candidates. Maximal degree in co-relation 1271. Up to 5713 conditions per place. [2024-11-28 03:40:21,854 INFO L140 encePairwiseOnDemand]: 99/103 looper letters, 74 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2024-11-28 03:40:21,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 124 transitions, 424 flow [2024-11-28 03:40:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:21,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:40:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2024-11-28 03:40:21,862 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6480582524271845 [2024-11-28 03:40:21,863 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 196 flow. Second operand 4 states and 267 transitions. [2024-11-28 03:40:21,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 124 transitions, 424 flow [2024-11-28 03:40:21,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 124 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:40:21,871 INFO L231 Difference]: Finished difference. Result has 97 places, 87 transitions, 206 flow [2024-11-28 03:40:21,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=97, PETRI_TRANSITIONS=87} [2024-11-28 03:40:21,876 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2024-11-28 03:40:21,876 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 87 transitions, 206 flow [2024-11-28 03:40:21,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:21,877 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:21,877 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 03:40:21,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:40:21,877 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 03:40:21,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 654036680, now seen corresponding path program 1 times [2024-11-28 03:40:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:21,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765735173] [2024-11-28 03:40:21,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:22,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765735173] [2024-11-28 03:40:22,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765735173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:22,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:40:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575922800] [2024-11-28 03:40:22,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:22,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:40:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:22,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:40:22,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:22,135 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 103 [2024-11-28 03:40:22,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 87 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:22,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:22,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 103 [2024-11-28 03:40:22,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:22,641 INFO L124 PetriNetUnfolderBase]: 957/1962 cut-off events. [2024-11-28 03:40:22,641 INFO L125 PetriNetUnfolderBase]: For 777/777 co-relation queries the response was YES. [2024-11-28 03:40:22,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 1962 events. 957/1962 cut-off events. For 777/777 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 12725 event pairs, 0 based on Foata normal form. 288/2146 useless extension candidates. Maximal degree in co-relation 313. Up to 1224 conditions per place. [2024-11-28 03:40:22,654 INFO L140 encePairwiseOnDemand]: 99/103 looper letters, 63 selfloop transitions, 3 changer transitions 0/103 dead transitions. [2024-11-28 03:40:22,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 103 transitions, 362 flow [2024-11-28 03:40:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:40:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:40:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 303 transitions. [2024-11-28 03:40:22,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5883495145631068 [2024-11-28 03:40:22,657 INFO L175 Difference]: Start difference. First operand has 97 places, 87 transitions, 206 flow. Second operand 5 states and 303 transitions. [2024-11-28 03:40:22,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 103 transitions, 362 flow [2024-11-28 03:40:22,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 352 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-28 03:40:22,663 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 152 flow [2024-11-28 03:40:22,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2024-11-28 03:40:22,665 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -16 predicate places. [2024-11-28 03:40:22,665 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 152 flow [2024-11-28 03:40:22,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 5 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:22,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:22,665 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:22,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:40:22,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 03:40:22,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash 600121297, now seen corresponding path program 1 times [2024-11-28 03:40:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:22,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709300671] [2024-11-28 03:40:22,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:22,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:22,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:22,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:22,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709300671] [2024-11-28 03:40:22,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709300671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:22,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:22,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:40:22,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482031582] [2024-11-28 03:40:22,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:22,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:22,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:22,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:22,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:22,862 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 103 [2024-11-28 03:40:22,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:22,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:22,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 103 [2024-11-28 03:40:22,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:23,190 INFO L124 PetriNetUnfolderBase]: 957/2130 cut-off events. [2024-11-28 03:40:23,190 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2024-11-28 03:40:23,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 2130 events. 957/2130 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 13750 event pairs, 957 based on Foata normal form. 0/2083 useless extension candidates. Maximal degree in co-relation 2695. Up to 1584 conditions per place. [2024-11-28 03:40:23,202 INFO L140 encePairwiseOnDemand]: 94/103 looper letters, 28 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-11-28 03:40:23,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 58 transitions, 194 flow [2024-11-28 03:40:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:23,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:40:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-28 03:40:23,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5048543689320388 [2024-11-28 03:40:23,206 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 152 flow. Second operand 3 states and 156 transitions. [2024-11-28 03:40:23,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 58 transitions, 194 flow [2024-11-28 03:40:23,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 189 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 03:40:23,210 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 133 flow [2024-11-28 03:40:23,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2024-11-28 03:40:23,211 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -25 predicate places. [2024-11-28 03:40:23,211 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 133 flow [2024-11-28 03:40:23,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:23,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:23,211 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:23,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:40:23,212 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 03:40:23,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash 600121298, now seen corresponding path program 1 times [2024-11-28 03:40:23,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:23,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717044446] [2024-11-28 03:40:23,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:23,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:23,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:23,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717044446] [2024-11-28 03:40:23,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717044446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:23,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:40:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477093071] [2024-11-28 03:40:23,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:23,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:23,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:23,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:23,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:23,484 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 103 [2024-11-28 03:40:23,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:23,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:23,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 103 [2024-11-28 03:40:23,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:23,785 INFO L124 PetriNetUnfolderBase]: 957/2016 cut-off events. [2024-11-28 03:40:23,786 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-28 03:40:23,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3801 conditions, 2016 events. 957/2016 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12338 event pairs, 957 based on Foata normal form. 0/1965 useless extension candidates. Maximal degree in co-relation 3792. Up to 1584 conditions per place. [2024-11-28 03:40:23,797 INFO L140 encePairwiseOnDemand]: 94/103 looper letters, 28 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-28 03:40:23,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 175 flow [2024-11-28 03:40:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:40:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-28 03:40:23,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5048543689320388 [2024-11-28 03:40:23,800 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 133 flow. Second operand 3 states and 156 transitions. [2024-11-28 03:40:23,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 175 flow [2024-11-28 03:40:23,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 50 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:40:23,801 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 118 flow [2024-11-28 03:40:23,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=103, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-11-28 03:40:23,806 INFO L279 CegarLoopForPetriNet]: 92 programPoint places, -32 predicate places. [2024-11-28 03:40:23,807 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 118 flow [2024-11-28 03:40:23,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:23,808 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:23,808 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-28 03:40:23,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:40:23,808 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-28 03:40:23,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:23,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1199698856, now seen corresponding path program 1 times [2024-11-28 03:40:23,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:23,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866963466] [2024-11-28 03:40:23,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:23,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:23,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:40:23,837 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:40:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:40:23,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 03:40:23,870 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 03:40:23,871 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2024-11-28 03:40:23,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX (28 of 30 remaining) [2024-11-28 03:40:23,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 30 remaining) [2024-11-28 03:40:23,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2024-11-28 03:40:23,871 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (25 of 30 remaining) [2024-11-28 03:40:23,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (24 of 30 remaining) [2024-11-28 03:40:23,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2024-11-28 03:40:23,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2024-11-28 03:40:23,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 30 remaining) [2024-11-28 03:40:23,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 30 remaining) [2024-11-28 03:40:23,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2024-11-28 03:40:23,872 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 30 remaining) [2024-11-28 03:40:23,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 30 remaining) [2024-11-28 03:40:23,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 30 remaining) [2024-11-28 03:40:23,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2024-11-28 03:40:23,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 30 remaining) [2024-11-28 03:40:23,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 30 remaining) [2024-11-28 03:40:23,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 30 remaining) [2024-11-28 03:40:23,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 30 remaining) [2024-11-28 03:40:23,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 30 remaining) [2024-11-28 03:40:23,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 30 remaining) [2024-11-28 03:40:23,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 30 remaining) [2024-11-28 03:40:23,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 30 remaining) [2024-11-28 03:40:23,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:40:23,875 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-11-28 03:40:23,876 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 03:40:23,876 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 03:40:23,938 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 03:40:23,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 139 transitions, 296 flow [2024-11-28 03:40:23,975 INFO L124 PetriNetUnfolderBase]: 34/225 cut-off events. [2024-11-28 03:40:23,976 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 03:40:23,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 225 events. 34/225 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1098 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 167. Up to 8 conditions per place. [2024-11-28 03:40:23,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 139 transitions, 296 flow [2024-11-28 03:40:23,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 139 transitions, 296 flow [2024-11-28 03:40:23,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:40:23,983 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;@62b96ae7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:40:23,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-28 03:40:23,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:40:23,985 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-28 03:40:23,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 03:40:23,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:23,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 03:40:23,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-28 03:40:23,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash 571098, now seen corresponding path program 1 times [2024-11-28 03:40:23,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:23,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171628591] [2024-11-28 03:40:23,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:23,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171628591] [2024-11-28 03:40:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171628591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:40:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131827100] [2024-11-28 03:40:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:24,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:24,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:24,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:24,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:24,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 139 [2024-11-28 03:40:24,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 139 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:24,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:24,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 139 [2024-11-28 03:40:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:39,145 INFO L124 PetriNetUnfolderBase]: 73678/131731 cut-off events. [2024-11-28 03:40:39,146 INFO L125 PetriNetUnfolderBase]: For 1308/1308 co-relation queries the response was YES. [2024-11-28 03:40:39,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234291 conditions, 131731 events. 73678/131731 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 3135. Compared 1373589 event pairs, 47784 based on Foata normal form. 32650/154012 useless extension candidates. Maximal degree in co-relation 15204. Up to 101927 conditions per place. [2024-11-28 03:40:40,397 INFO L140 encePairwiseOnDemand]: 113/139 looper letters, 63 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2024-11-28 03:40:40,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 130 transitions, 408 flow [2024-11-28 03:40:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:40:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:40:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2024-11-28 03:40:40,400 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6954436450839329 [2024-11-28 03:40:40,400 INFO L175 Difference]: Start difference. First operand has 124 places, 139 transitions, 296 flow. Second operand 3 states and 290 transitions. [2024-11-28 03:40:40,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 130 transitions, 408 flow [2024-11-28 03:40:40,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 130 transitions, 406 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 03:40:40,411 INFO L231 Difference]: Finished difference. Result has 126 places, 117 transitions, 262 flow [2024-11-28 03:40:40,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=126, PETRI_TRANSITIONS=117} [2024-11-28 03:40:40,413 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2024-11-28 03:40:40,415 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 117 transitions, 262 flow [2024-11-28 03:40:40,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:40,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:40,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 03:40:40,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:40:40,417 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-28 03:40:40,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash -838006860, now seen corresponding path program 1 times [2024-11-28 03:40:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986254630] [2024-11-28 03:40:40,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:40,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:40,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986254630] [2024-11-28 03:40:40,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986254630] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:40,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:40:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938036025] [2024-11-28 03:40:40,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:40,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:40:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:40,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:40:40,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:40:40,577 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 139 [2024-11-28 03:40:40,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 117 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:40,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:40,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 139 [2024-11-28 03:40:40,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:53,874 INFO L124 PetriNetUnfolderBase]: 73557/130362 cut-off events. [2024-11-28 03:40:53,875 INFO L125 PetriNetUnfolderBase]: For 6141/6141 co-relation queries the response was YES. [2024-11-28 03:40:54,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238168 conditions, 130362 events. 73557/130362 cut-off events. For 6141/6141 co-relation queries the response was YES. Maximal size of possible extension queue 3105. Compared 1341830 event pairs, 45476 based on Foata normal form. 24/124140 useless extension candidates. Maximal degree in co-relation 217857. Up to 101329 conditions per place. [2024-11-28 03:40:54,663 INFO L140 encePairwiseOnDemand]: 135/139 looper letters, 87 selfloop transitions, 3 changer transitions 0/155 dead transitions. [2024-11-28 03:40:54,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 155 transitions, 520 flow [2024-11-28 03:40:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:40:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:40:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 352 transitions. [2024-11-28 03:40:54,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6330935251798561 [2024-11-28 03:40:54,666 INFO L175 Difference]: Start difference. First operand has 126 places, 117 transitions, 262 flow. Second operand 4 states and 352 transitions. [2024-11-28 03:40:54,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 155 transitions, 520 flow [2024-11-28 03:40:54,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 155 transitions, 518 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:40:54,672 INFO L231 Difference]: Finished difference. Result has 129 places, 118 transitions, 278 flow [2024-11-28 03:40:54,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=129, PETRI_TRANSITIONS=118} [2024-11-28 03:40:54,673 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 5 predicate places. [2024-11-28 03:40:54,673 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 118 transitions, 278 flow [2024-11-28 03:40:54,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:54,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:54,674 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-11-28 03:40:54,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:40:54,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-28 03:40:54,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:54,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1835651053, now seen corresponding path program 1 times [2024-11-28 03:40:54,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:54,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770438701] [2024-11-28 03:40:54,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:54,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:40:54,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:54,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770438701] [2024-11-28 03:40:54,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770438701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:54,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:54,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:40:54,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815379304] [2024-11-28 03:40:54,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:54,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:40:54,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:54,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:40:54,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:40:54,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 139 [2024-11-28 03:40:54,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 118 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:40:54,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:54,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 139 [2024-11-28 03:40:54,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:07,785 INFO L124 PetriNetUnfolderBase]: 70653/127243 cut-off events. [2024-11-28 03:41:07,785 INFO L125 PetriNetUnfolderBase]: For 17081/17081 co-relation queries the response was YES. [2024-11-28 03:41:08,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235747 conditions, 127243 events. 70653/127243 cut-off events. For 17081/17081 co-relation queries the response was YES. Maximal size of possible extension queue 3131. Compared 1334874 event pairs, 20746 based on Foata normal form. 288/121219 useless extension candidates. Maximal degree in co-relation 175021. Up to 90721 conditions per place. [2024-11-28 03:41:08,437 INFO L140 encePairwiseOnDemand]: 135/139 looper letters, 121 selfloop transitions, 4 changer transitions 0/190 dead transitions. [2024-11-28 03:41:08,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 190 transitions, 672 flow [2024-11-28 03:41:08,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:08,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2024-11-28 03:41:08,440 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6503597122302158 [2024-11-28 03:41:08,440 INFO L175 Difference]: Start difference. First operand has 129 places, 118 transitions, 278 flow. Second operand 5 states and 452 transitions. [2024-11-28 03:41:08,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 190 transitions, 672 flow [2024-11-28 03:41:08,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 190 transitions, 666 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 03:41:08,466 INFO L231 Difference]: Finished difference. Result has 132 places, 118 transitions, 286 flow [2024-11-28 03:41:08,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=132, PETRI_TRANSITIONS=118} [2024-11-28 03:41:08,467 INFO L279 CegarLoopForPetriNet]: 124 programPoint places, 8 predicate places. [2024-11-28 03:41:08,468 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 118 transitions, 286 flow [2024-11-28 03:41:08,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:08,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:08,468 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:08,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:41:08,469 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-28 03:41:08,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1552283135, now seen corresponding path program 1 times [2024-11-28 03:41:08,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:08,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261147199] [2024-11-28 03:41:08,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261147199] [2024-11-28 03:41:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261147199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 03:41:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111140506] [2024-11-28 03:41:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:08,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:08,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:08,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:08,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 139 [2024-11-28 03:41:08,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 118 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:41:08,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:08,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 139 [2024-11-28 03:41:08,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand