./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --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_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/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_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/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_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:33:07,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:33:07,298 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:33:07,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:33:07,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:33:07,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:33:07,331 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:33:07,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:33:07,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:33:07,331 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:33:07,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:33:07,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:33:07,332 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:33:07,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:33:07,332 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:33:07,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:33:07,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:33:07,333 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:33:07,333 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:33:07,333 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:33:07,333 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:33:07,333 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:33:07,334 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:33:07,334 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:33:07,334 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:33:07,334 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:33:07,334 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:33:07,334 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:33:07,334 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:33:07,335 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:33:07,335 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:33:07,335 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:33:07,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:33:07,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:33:07,335 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:33:07,336 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:33:07,336 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:33:07,336 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:33:07,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:33:07,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:33:07,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:33:07,336 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:33:07,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:33:07,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:33:07,337 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:33:07,337 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:33:07,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:33:07,337 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_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/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 -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-11-28 02:33:07,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:33:07,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:33:07,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:33:07,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:33:07,609 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:33:07,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-28 02:33:10,545 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/data/31226f0a9/af59605c38df4c6a91efb36d9d41d6a1/FLAGace51de5f [2024-11-28 02:33:10,816 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:33:10,821 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-28 02:33:10,851 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/data/31226f0a9/af59605c38df4c6a91efb36d9d41d6a1/FLAGace51de5f [2024-11-28 02:33:11,110 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/data/31226f0a9/af59605c38df4c6a91efb36d9d41d6a1 [2024-11-28 02:33:11,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:33:11,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:33:11,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:33:11,117 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:33:11,122 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:33:11,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eed751a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11, skipping insertion in model container [2024-11-28 02:33:11,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:33:11,358 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:33:11,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:33:11,370 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:33:11,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:33:11,426 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:33:11,427 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11 WrapperNode [2024-11-28 02:33:11,427 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:33:11,428 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:33:11,429 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:33:11,429 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:33:11,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,491 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 311 [2024-11-28 02:33:11,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:33:11,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:33:11,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:33:11,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:33:11,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,509 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,540 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 02:33:11,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,556 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,557 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,573 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:33:11,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:33:11,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:33:11,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:33:11,583 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (1/1) ... [2024-11-28 02:33:11,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:33:11,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:11,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:33:11,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:33:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:33:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:33:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:33:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:33:11,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:33:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 02:33:11,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:33:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:33:11,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:33:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:33:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:33:11,658 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 02:33:11,794 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:33:11,797 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:33:12,445 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:33:12,445 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:33:12,979 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:33:12,980 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 02:33:12,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:33:12 BoogieIcfgContainer [2024-11-28 02:33:12,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:33:12,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:33:12,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:33:12,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:33:12,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:33:11" (1/3) ... [2024-11-28 02:33:12,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:33:12, skipping insertion in model container [2024-11-28 02:33:12,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:33:11" (2/3) ... [2024-11-28 02:33:12,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8ab4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:33:12, skipping insertion in model container [2024-11-28 02:33:12,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:33:12" (3/3) ... [2024-11-28 02:33:12,992 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-11-28 02:33:13,008 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:33:13,010 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring-nondet.wvr.c that has 4 procedures, 68 locations, 1 initial locations, 6 loop locations, and 22 error locations. [2024-11-28 02:33:13,010 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:33:13,128 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 02:33:13,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 79 transitions, 179 flow [2024-11-28 02:33:13,233 INFO L124 PetriNetUnfolderBase]: 12/76 cut-off events. [2024-11-28 02:33:13,236 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 02:33:13,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 12/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 212 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2024-11-28 02:33:13,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 79 transitions, 179 flow [2024-11-28 02:33:13,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 75 transitions, 168 flow [2024-11-28 02:33:13,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:33:13,279 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;@d1d8833, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:33:13,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-28 02:33:13,284 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:33:13,286 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-28 02:33:13,286 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:33:13,287 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:13,288 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:33:13,288 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:13,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 951185, now seen corresponding path program 1 times [2024-11-28 02:33:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382601617] [2024-11-28 02:33:13,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:13,606 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 02:33:13,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:13,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382601617] [2024-11-28 02:33:13,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382601617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:13,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:13,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 02:33:13,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609331945] [2024-11-28 02:33:13,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:13,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:13,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:13,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:13,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:13,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:13,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 75 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:13,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:13,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:13,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:15,278 INFO L124 PetriNetUnfolderBase]: 5785/8876 cut-off events. [2024-11-28 02:33:15,278 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2024-11-28 02:33:15,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17120 conditions, 8876 events. 5785/8876 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 56126 event pairs, 5236 based on Foata normal form. 1/5244 useless extension candidates. Maximal degree in co-relation 16508. Up to 7878 conditions per place. [2024-11-28 02:33:15,371 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 47 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-11-28 02:33:15,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 248 flow [2024-11-28 02:33:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:33:15,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-11-28 02:33:15,391 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5063291139240507 [2024-11-28 02:33:15,393 INFO L175 Difference]: Start difference. First operand has 73 places, 75 transitions, 168 flow. Second operand 3 states and 120 transitions. [2024-11-28 02:33:15,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 248 flow [2024-11-28 02:33:15,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 02:33:15,420 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 142 flow [2024-11-28 02:33:15,424 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2024-11-28 02:33:15,429 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2024-11-28 02:33:15,430 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 142 flow [2024-11-28 02:33:15,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:15,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:15,431 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 02:33:15,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:33:15,432 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:15,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:15,433 INFO L85 PathProgramCache]: Analyzing trace with hash 951186, now seen corresponding path program 1 times [2024-11-28 02:33:15,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:15,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405854392] [2024-11-28 02:33:15,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:15,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:15,959 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 02:33:15,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:15,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405854392] [2024-11-28 02:33:15,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405854392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:15,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:15,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:33:15,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225664239] [2024-11-28 02:33:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:15,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:33:15,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:15,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:33:15,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:33:16,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:16,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:16,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:16,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:16,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:17,498 INFO L124 PetriNetUnfolderBase]: 5786/8879 cut-off events. [2024-11-28 02:33:17,499 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-28 02:33:17,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16907 conditions, 8879 events. 5786/8879 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 56191 event pairs, 5236 based on Foata normal form. 0/5243 useless extension candidates. Maximal degree in co-relation 16870. Up to 7891 conditions per place. [2024-11-28 02:33:17,589 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 51 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-28 02:33:17,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 258 flow [2024-11-28 02:33:17,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:33:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:33:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-11-28 02:33:17,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4430379746835443 [2024-11-28 02:33:17,591 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 142 flow. Second operand 4 states and 140 transitions. [2024-11-28 02:33:17,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 258 flow [2024-11-28 02:33:17,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:17,595 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 165 flow [2024-11-28 02:33:17,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=67, PETRI_TRANSITIONS=69} [2024-11-28 02:33:17,597 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2024-11-28 02:33:17,597 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 165 flow [2024-11-28 02:33:17,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:17,597 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:17,597 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 02:33:17,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:33:17,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:17,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:17,598 INFO L85 PathProgramCache]: Analyzing trace with hash 29488816, now seen corresponding path program 1 times [2024-11-28 02:33:17,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:17,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540681804] [2024-11-28 02:33:17,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:17,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:18,015 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 02:33:18,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:18,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540681804] [2024-11-28 02:33:18,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540681804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:18,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:18,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883494217] [2024-11-28 02:33:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:18,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:18,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:18,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:33:18,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:18,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 69 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 02:33:18,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:18,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:18,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:19,361 INFO L124 PetriNetUnfolderBase]: 5787/8882 cut-off events. [2024-11-28 02:33:19,361 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-28 02:33:19,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16924 conditions, 8882 events. 5787/8882 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 56215 event pairs, 5236 based on Foata normal form. 0/5245 useless extension candidates. Maximal degree in co-relation 16899. Up to 7890 conditions per place. [2024-11-28 02:33:19,423 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 51 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-11-28 02:33:19,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 287 flow [2024-11-28 02:33:19,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:19,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:33:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-28 02:33:19,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4151898734177215 [2024-11-28 02:33:19,425 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 165 flow. Second operand 5 states and 164 transitions. [2024-11-28 02:33:19,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 287 flow [2024-11-28 02:33:19,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:33:19,427 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 199 flow [2024-11-28 02:33:19,427 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-11-28 02:33:19,431 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2024-11-28 02:33:19,431 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 199 flow [2024-11-28 02:33:19,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 02:33:19,431 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:19,431 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:33:19,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:33:19,432 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:19,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:19,433 INFO L85 PathProgramCache]: Analyzing trace with hash 914155854, now seen corresponding path program 1 times [2024-11-28 02:33:19,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:19,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703455012] [2024-11-28 02:33:19,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:19,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:19,788 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 02:33:19,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:19,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703455012] [2024-11-28 02:33:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703455012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:19,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:19,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268459609] [2024-11-28 02:33:19,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:19,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:19,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:19,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:19,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:33:19,831 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:19,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 02:33:19,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:19,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:19,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:21,000 INFO L124 PetriNetUnfolderBase]: 5788/8885 cut-off events. [2024-11-28 02:33:21,001 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-11-28 02:33:21,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 8885 events. 5788/8885 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 56197 event pairs, 5236 based on Foata normal form. 0/5249 useless extension candidates. Maximal degree in co-relation 16915. Up to 7893 conditions per place. [2024-11-28 02:33:21,172 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 52 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2024-11-28 02:33:21,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 75 transitions, 327 flow [2024-11-28 02:33:21,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:33:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-28 02:33:21,179 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4151898734177215 [2024-11-28 02:33:21,179 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 199 flow. Second operand 5 states and 164 transitions. [2024-11-28 02:33:21,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 75 transitions, 327 flow [2024-11-28 02:33:21,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 75 transitions, 326 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:33:21,183 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 241 flow [2024-11-28 02:33:21,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=241, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-28 02:33:21,185 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2024-11-28 02:33:21,186 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 241 flow [2024-11-28 02:33:21,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 02:33:21,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:21,188 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-28 02:33:21,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:33:21,189 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:21,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:21,189 INFO L85 PathProgramCache]: Analyzing trace with hash 914119333, now seen corresponding path program 1 times [2024-11-28 02:33:21,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:21,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424864765] [2024-11-28 02:33:21,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:21,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:21,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:21,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424864765] [2024-11-28 02:33:21,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424864765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:21,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220908948] [2024-11-28 02:33:21,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:21,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:21,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:21,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:21,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:33:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:21,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:33:21,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:21,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 02:33:22,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:22,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220908948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:22,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:22,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-28 02:33:22,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449596961] [2024-11-28 02:33:22,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:22,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:33:22,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:22,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:33:22,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:33:22,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:22,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 241 flow. Second operand has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 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 02:33:22,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:22,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:22,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:24,311 INFO L124 PetriNetUnfolderBase]: 5789/8887 cut-off events. [2024-11-28 02:33:24,311 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-28 02:33:24,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16974 conditions, 8887 events. 5789/8887 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 56244 event pairs, 5236 based on Foata normal form. 0/5254 useless extension candidates. Maximal degree in co-relation 16930. Up to 7894 conditions per place. [2024-11-28 02:33:24,411 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 53 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2024-11-28 02:33:24,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 378 flow [2024-11-28 02:33:24,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:33:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 02:33:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-11-28 02:33:24,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35917721518987344 [2024-11-28 02:33:24,415 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 241 flow. Second operand 8 states and 227 transitions. [2024-11-28 02:33:24,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 378 flow [2024-11-28 02:33:24,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 371 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:24,419 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 265 flow [2024-11-28 02:33:24,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=265, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-11-28 02:33:24,420 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2024-11-28 02:33:24,420 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 265 flow [2024-11-28 02:33:24,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.363636363636363) internal successors, (246), 11 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 02:33:24,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:24,421 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:33:24,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:24,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:24,625 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:24,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1725987613, now seen corresponding path program 1 times [2024-11-28 02:33:24,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:24,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56494051] [2024-11-28 02:33:24,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:24,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:25,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:25,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56494051] [2024-11-28 02:33:25,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56494051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:25,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759344588] [2024-11-28 02:33:25,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:25,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:25,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:25,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:25,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:33:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:25,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:33:25,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:25,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-28 02:33:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:25,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:25,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759344588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:25,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:25,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-28 02:33:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747324222] [2024-11-28 02:33:25,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:25,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:33:25,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:25,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:33:25,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:33:26,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:26,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 265 flow. Second operand has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 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 02:33:26,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:26,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:26,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:27,934 INFO L124 PetriNetUnfolderBase]: 5790/8889 cut-off events. [2024-11-28 02:33:27,934 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-28 02:33:27,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16987 conditions, 8889 events. 5790/8889 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 56308 event pairs, 5236 based on Foata normal form. 0/5257 useless extension candidates. Maximal degree in co-relation 16936. Up to 7886 conditions per place. [2024-11-28 02:33:27,989 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 47 selfloop transitions, 18 changer transitions 0/79 dead transitions. [2024-11-28 02:33:27,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 405 flow [2024-11-28 02:33:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:33:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:33:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 253 transitions. [2024-11-28 02:33:27,992 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3558368495077356 [2024-11-28 02:33:27,992 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 265 flow. Second operand 9 states and 253 transitions. [2024-11-28 02:33:27,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 405 flow [2024-11-28 02:33:27,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 79 transitions, 358 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-28 02:33:27,996 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 264 flow [2024-11-28 02:33:27,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=264, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2024-11-28 02:33:27,997 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-28 02:33:27,997 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 264 flow [2024-11-28 02:33:27,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.307692307692307) internal successors, (290), 13 states have internal predecessors, (290), 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 02:33:27,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:27,998 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-28 02:33:28,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:28,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:28,202 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:28,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1964489435, now seen corresponding path program 1 times [2024-11-28 02:33:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:28,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077690490] [2024-11-28 02:33:28,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:28,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:28,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:28,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:28,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077690490] [2024-11-28 02:33:28,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077690490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:28,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371884206] [2024-11-28 02:33:28,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:28,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:28,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:28,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:28,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:33:28,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:28,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:33:28,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:28,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-28 02:33:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:29,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:29,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371884206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:29,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:29,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-28 02:33:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034537366] [2024-11-28 02:33:29,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:29,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:33:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:29,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:33:29,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:33:29,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:29,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 264 flow. Second operand has 13 states, 13 states have (on average 22.46153846153846) internal successors, (292), 13 states have internal predecessors, (292), 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 02:33:29,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:29,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:29,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:30,767 INFO L124 PetriNetUnfolderBase]: 5791/8891 cut-off events. [2024-11-28 02:33:30,767 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-28 02:33:30,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16985 conditions, 8891 events. 5791/8891 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 56310 event pairs, 5236 based on Foata normal form. 0/5259 useless extension candidates. Maximal degree in co-relation 16921. Up to 7888 conditions per place. [2024-11-28 02:33:30,825 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 45 selfloop transitions, 22 changer transitions 0/81 dead transitions. [2024-11-28 02:33:30,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 81 transitions, 406 flow [2024-11-28 02:33:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:33:30,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 02:33:30,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-11-28 02:33:30,829 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35443037974683544 [2024-11-28 02:33:30,829 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 264 flow. Second operand 9 states and 252 transitions. [2024-11-28 02:33:30,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 81 transitions, 406 flow [2024-11-28 02:33:30,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 373 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-28 02:33:30,837 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 283 flow [2024-11-28 02:33:30,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=283, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-28 02:33:30,838 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2024-11-28 02:33:30,838 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 283 flow [2024-11-28 02:33:30,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.46153846153846) internal successors, (292), 13 states have internal predecessors, (292), 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 02:33:30,838 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:30,838 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:30,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:33:31,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:33:31,048 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:31,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash -766914087, now seen corresponding path program 1 times [2024-11-28 02:33:31,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:31,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939798831] [2024-11-28 02:33:31,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:33:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939798831] [2024-11-28 02:33:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939798831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:31,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:31,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:33:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488979822] [2024-11-28 02:33:31,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:31,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:33:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:31,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:33:31,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:33:31,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:31,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 283 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 02:33:31,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:31,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:31,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:31,905 INFO L124 PetriNetUnfolderBase]: 5995/9258 cut-off events. [2024-11-28 02:33:31,906 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2024-11-28 02:33:31,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17731 conditions, 9258 events. 5995/9258 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 58574 event pairs, 5423 based on Foata normal form. 102/5664 useless extension candidates. Maximal degree in co-relation 16931. Up to 7902 conditions per place. [2024-11-28 02:33:31,946 INFO L140 encePairwiseOnDemand]: 69/79 looper letters, 98 selfloop transitions, 3 changer transitions 1/116 dead transitions. [2024-11-28 02:33:31,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 116 transitions, 628 flow [2024-11-28 02:33:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:33:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:33:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-11-28 02:33:31,947 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5632911392405063 [2024-11-28 02:33:31,947 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 283 flow. Second operand 4 states and 178 transitions. [2024-11-28 02:33:31,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 116 transitions, 628 flow [2024-11-28 02:33:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 550 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-28 02:33:31,951 INFO L231 Difference]: Finished difference. Result has 80 places, 81 transitions, 258 flow [2024-11-28 02:33:31,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=80, PETRI_TRANSITIONS=81} [2024-11-28 02:33:31,952 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-28 02:33:31,952 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 81 transitions, 258 flow [2024-11-28 02:33:31,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 02:33:31,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:31,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:31,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:33:31,952 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:31,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:31,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1705611610, now seen corresponding path program 1 times [2024-11-28 02:33:31,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:31,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057370138] [2024-11-28 02:33:31,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:31,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:33:32,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:32,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057370138] [2024-11-28 02:33:32,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057370138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:32,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:32,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:33:32,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290346988] [2024-11-28 02:33:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:32,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:33:32,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:32,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:33:32,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:33:32,466 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 79 [2024-11-28 02:33:32,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:33:32,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:32,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 79 [2024-11-28 02:33:32,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:32,937 INFO L124 PetriNetUnfolderBase]: 4530/7093 cut-off events. [2024-11-28 02:33:32,937 INFO L125 PetriNetUnfolderBase]: For 547/547 co-relation queries the response was YES. [2024-11-28 02:33:32,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13780 conditions, 7093 events. 4530/7093 cut-off events. For 547/547 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 41876 event pairs, 3896 based on Foata normal form. 0/4896 useless extension candidates. Maximal degree in co-relation 13033. Up to 5981 conditions per place. [2024-11-28 02:33:32,960 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 60 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2024-11-28 02:33:32,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 76 transitions, 368 flow [2024-11-28 02:33:32,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:33:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:33:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-28 02:33:32,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40189873417721517 [2024-11-28 02:33:32,965 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 258 flow. Second operand 4 states and 127 transitions. [2024-11-28 02:33:32,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 76 transitions, 368 flow [2024-11-28 02:33:32,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 76 transitions, 363 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:32,967 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 243 flow [2024-11-28 02:33:32,968 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=243, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-11-28 02:33:32,968 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2024-11-28 02:33:32,968 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 243 flow [2024-11-28 02:33:32,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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 02:33:32,968 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:32,968 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:32,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:33:32,969 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:32,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:32,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1931618542, now seen corresponding path program 1 times [2024-11-28 02:33:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40116562] [2024-11-28 02:33:32,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:32,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:33:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:33,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40116562] [2024-11-28 02:33:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40116562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:33,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:33,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:33:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782185156] [2024-11-28 02:33:33,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:33,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:33,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:33,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:33,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:33,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:33,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 02:33:33,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:33,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:33,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:33,458 INFO L124 PetriNetUnfolderBase]: 3592/5651 cut-off events. [2024-11-28 02:33:33,459 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2024-11-28 02:33:33,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11434 conditions, 5651 events. 3592/5651 cut-off events. For 577/577 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 33781 event pairs, 1296 based on Foata normal form. 127/3956 useless extension candidates. Maximal degree in co-relation 11147. Up to 3903 conditions per place. [2024-11-28 02:33:33,490 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 80 selfloop transitions, 2 changer transitions 1/96 dead transitions. [2024-11-28 02:33:33,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 457 flow [2024-11-28 02:33:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:33:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-28 02:33:33,494 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5907172995780591 [2024-11-28 02:33:33,495 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 243 flow. Second operand 3 states and 140 transitions. [2024-11-28 02:33:33,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 457 flow [2024-11-28 02:33:33,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:33,498 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 248 flow [2024-11-28 02:33:33,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2024-11-28 02:33:33,499 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2024-11-28 02:33:33,501 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 248 flow [2024-11-28 02:33:33,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 02:33:33,501 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:33,501 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:33,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:33:33,501 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:33,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1334352413, now seen corresponding path program 1 times [2024-11-28 02:33:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639606911] [2024-11-28 02:33:33,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:33,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:33:33,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639606911] [2024-11-28 02:33:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639606911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:33,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:33,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:33:33,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124084095] [2024-11-28 02:33:33,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:33,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:33:33,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:33,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:33:33,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:33:33,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 79 [2024-11-28 02:33:33,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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 02:33:33,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:33,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 79 [2024-11-28 02:33:33,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:34,493 INFO L124 PetriNetUnfolderBase]: 4309/6877 cut-off events. [2024-11-28 02:33:34,493 INFO L125 PetriNetUnfolderBase]: For 1136/1208 co-relation queries the response was YES. [2024-11-28 02:33:34,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14820 conditions, 6877 events. 4309/6877 cut-off events. For 1136/1208 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 43948 event pairs, 1630 based on Foata normal form. 0/5258 useless extension candidates. Maximal degree in co-relation 14778. Up to 3267 conditions per place. [2024-11-28 02:33:34,516 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 81 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2024-11-28 02:33:34,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 485 flow [2024-11-28 02:33:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:33:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-28 02:33:34,518 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40253164556962023 [2024-11-28 02:33:34,518 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 248 flow. Second operand 5 states and 159 transitions. [2024-11-28 02:33:34,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 485 flow [2024-11-28 02:33:34,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 98 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:33:34,520 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 276 flow [2024-11-28 02:33:34,521 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2024-11-28 02:33:34,521 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2024-11-28 02:33:34,522 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 276 flow [2024-11-28 02:33:34,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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 02:33:34,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:34,522 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:34,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:33:34,522 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:34,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1579731297, now seen corresponding path program 1 times [2024-11-28 02:33:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873539273] [2024-11-28 02:33:34,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:34,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:34,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:34,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873539273] [2024-11-28 02:33:34,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873539273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:34,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:34,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14462220] [2024-11-28 02:33:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:34,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:34,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:34,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:34,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:34,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:33:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:35,229 INFO L124 PetriNetUnfolderBase]: 4243/6519 cut-off events. [2024-11-28 02:33:35,229 INFO L125 PetriNetUnfolderBase]: For 3842/3866 co-relation queries the response was YES. [2024-11-28 02:33:35,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15461 conditions, 6519 events. 4243/6519 cut-off events. For 3842/3866 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 38218 event pairs, 1943 based on Foata normal form. 60/5006 useless extension candidates. Maximal degree in co-relation 15414. Up to 5410 conditions per place. [2024-11-28 02:33:35,255 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 79 selfloop transitions, 4 changer transitions 0/95 dead transitions. [2024-11-28 02:33:35,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 95 transitions, 504 flow [2024-11-28 02:33:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:33:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-28 02:33:35,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2024-11-28 02:33:35,257 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 276 flow. Second operand 3 states and 134 transitions. [2024-11-28 02:33:35,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 95 transitions, 504 flow [2024-11-28 02:33:35,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 95 transitions, 500 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:35,260 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 312 flow [2024-11-28 02:33:35,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-28 02:33:35,261 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2024-11-28 02:33:35,261 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 312 flow [2024-11-28 02:33:35,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 02:33:35,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:35,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:35,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:33:35,261 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:35,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:35,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1769506514, now seen corresponding path program 1 times [2024-11-28 02:33:35,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:35,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552197525] [2024-11-28 02:33:35,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:35,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:35,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552197525] [2024-11-28 02:33:35,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552197525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:35,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657786480] [2024-11-28 02:33:35,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:35,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:33:35,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:35,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:33:35,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:33:35,364 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:35,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:35,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:35,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:35,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:36,644 INFO L124 PetriNetUnfolderBase]: 6259/9574 cut-off events. [2024-11-28 02:33:36,645 INFO L125 PetriNetUnfolderBase]: For 9058/9094 co-relation queries the response was YES. [2024-11-28 02:33:36,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24622 conditions, 9574 events. 6259/9574 cut-off events. For 9058/9094 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 59430 event pairs, 4579 based on Foata normal form. 191/7568 useless extension candidates. Maximal degree in co-relation 24574. Up to 5795 conditions per place. [2024-11-28 02:33:36,716 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 95 selfloop transitions, 5 changer transitions 0/112 dead transitions. [2024-11-28 02:33:36,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 112 transitions, 648 flow [2024-11-28 02:33:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:33:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:33:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-11-28 02:33:36,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5569620253164557 [2024-11-28 02:33:36,722 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 312 flow. Second operand 4 states and 176 transitions. [2024-11-28 02:33:36,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 112 transitions, 648 flow [2024-11-28 02:33:36,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 112 transitions, 641 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:33:36,729 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 331 flow [2024-11-28 02:33:36,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=331, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2024-11-28 02:33:36,730 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2024-11-28 02:33:36,731 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 331 flow [2024-11-28 02:33:36,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:36,731 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:36,731 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:36,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:33:36,732 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:36,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:36,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1815202284, now seen corresponding path program 1 times [2024-11-28 02:33:36,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:36,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505146753] [2024-11-28 02:33:36,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:36,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:36,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:36,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505146753] [2024-11-28 02:33:36,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505146753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:36,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:36,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:36,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583252481] [2024-11-28 02:33:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:36,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:33:36,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:36,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:33:36,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:33:36,921 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:36,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:36,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:36,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:36,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:38,034 INFO L124 PetriNetUnfolderBase]: 7412/11579 cut-off events. [2024-11-28 02:33:38,034 INFO L125 PetriNetUnfolderBase]: For 11161/11233 co-relation queries the response was YES. [2024-11-28 02:33:38,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30625 conditions, 11579 events. 7412/11579 cut-off events. For 11161/11233 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 74463 event pairs, 5463 based on Foata normal form. 236/9393 useless extension candidates. Maximal degree in co-relation 30576. Up to 8677 conditions per place. [2024-11-28 02:33:38,077 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 90 selfloop transitions, 5 changer transitions 8/115 dead transitions. [2024-11-28 02:33:38,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 115 transitions, 691 flow [2024-11-28 02:33:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:38,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:33:38,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-11-28 02:33:38,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012658227848101 [2024-11-28 02:33:38,079 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 331 flow. Second operand 5 states and 198 transitions. [2024-11-28 02:33:38,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 115 transitions, 691 flow [2024-11-28 02:33:38,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 115 transitions, 686 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:33:38,086 INFO L231 Difference]: Finished difference. Result has 89 places, 81 transitions, 355 flow [2024-11-28 02:33:38,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=355, PETRI_PLACES=89, PETRI_TRANSITIONS=81} [2024-11-28 02:33:38,087 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-11-28 02:33:38,088 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 81 transitions, 355 flow [2024-11-28 02:33:38,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:38,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:38,088 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:38,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:33:38,089 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:38,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2136338889, now seen corresponding path program 1 times [2024-11-28 02:33:38,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:38,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399070080] [2024-11-28 02:33:38,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:38,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399070080] [2024-11-28 02:33:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399070080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272650880] [2024-11-28 02:33:38,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:38,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:38,336 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:38,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:33:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:38,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:33:38,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:38,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:33:38,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272650880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:38,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:33:38,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 02:33:38,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081636690] [2024-11-28 02:33:38,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:38,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:38,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:38,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:33:38,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:38,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 81 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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 02:33:38,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:38,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:38,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:39,681 INFO L124 PetriNetUnfolderBase]: 6246/9706 cut-off events. [2024-11-28 02:33:39,682 INFO L125 PetriNetUnfolderBase]: For 10020/10092 co-relation queries the response was YES. [2024-11-28 02:33:39,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26592 conditions, 9706 events. 6246/9706 cut-off events. For 10020/10092 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 60577 event pairs, 4516 based on Foata normal form. 0/7758 useless extension candidates. Maximal degree in co-relation 26539. Up to 8718 conditions per place. [2024-11-28 02:33:39,771 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 61 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2024-11-28 02:33:39,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 79 transitions, 481 flow [2024-11-28 02:33:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:33:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:33:39,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-28 02:33:39,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4462025316455696 [2024-11-28 02:33:39,773 INFO L175 Difference]: Start difference. First operand has 89 places, 81 transitions, 355 flow. Second operand 4 states and 141 transitions. [2024-11-28 02:33:39,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 79 transitions, 481 flow [2024-11-28 02:33:39,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 79 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:33:39,783 INFO L231 Difference]: Finished difference. Result has 89 places, 79 transitions, 356 flow [2024-11-28 02:33:39,783 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=89, PETRI_TRANSITIONS=79} [2024-11-28 02:33:39,784 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 16 predicate places. [2024-11-28 02:33:39,784 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 79 transitions, 356 flow [2024-11-28 02:33:39,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 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 02:33:39,784 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:39,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:39,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:39,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:39,986 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:39,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2136338890, now seen corresponding path program 1 times [2024-11-28 02:33:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:39,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14754457] [2024-11-28 02:33:39,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:39,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:40,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:40,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14754457] [2024-11-28 02:33:40,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14754457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:40,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:40,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414665515] [2024-11-28 02:33:40,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:40,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:33:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:40,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:33:40,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:33:40,092 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:40,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 79 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 02:33:40,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:40,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:40,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:40,964 INFO L124 PetriNetUnfolderBase]: 5616/8772 cut-off events. [2024-11-28 02:33:40,964 INFO L125 PetriNetUnfolderBase]: For 9456/9528 co-relation queries the response was YES. [2024-11-28 02:33:40,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24029 conditions, 8772 events. 5616/8772 cut-off events. For 9456/9528 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 54087 event pairs, 3993 based on Foata normal form. 0/7207 useless extension candidates. Maximal degree in co-relation 23976. Up to 7832 conditions per place. [2024-11-28 02:33:41,008 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 59 selfloop transitions, 4 changer transitions 2/77 dead transitions. [2024-11-28 02:33:41,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 77 transitions, 478 flow [2024-11-28 02:33:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:33:41,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:33:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-28 02:33:41,009 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40189873417721517 [2024-11-28 02:33:41,010 INFO L175 Difference]: Start difference. First operand has 89 places, 79 transitions, 356 flow. Second operand 4 states and 127 transitions. [2024-11-28 02:33:41,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 77 transitions, 478 flow [2024-11-28 02:33:41,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 77 transitions, 469 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:41,014 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 329 flow [2024-11-28 02:33:41,014 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-11-28 02:33:41,015 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 15 predicate places. [2024-11-28 02:33:41,015 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 329 flow [2024-11-28 02:33:41,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 02:33:41,015 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:41,015 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:41,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 02:33:41,016 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:41,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:41,016 INFO L85 PathProgramCache]: Analyzing trace with hash 608725121, now seen corresponding path program 1 times [2024-11-28 02:33:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:41,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426342994] [2024-11-28 02:33:41,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:41,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:41,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426342994] [2024-11-28 02:33:41,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426342994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:41,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:41,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:41,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283302120] [2024-11-28 02:33:41,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:41,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:33:41,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:41,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:33:41,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:33:41,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:41,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 02:33:41,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:41,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:41,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:41,912 INFO L124 PetriNetUnfolderBase]: 3722/5947 cut-off events. [2024-11-28 02:33:41,912 INFO L125 PetriNetUnfolderBase]: For 6407/6455 co-relation queries the response was YES. [2024-11-28 02:33:41,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16047 conditions, 5947 events. 3722/5947 cut-off events. For 6407/6455 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 35672 event pairs, 2600 based on Foata normal form. 0/5191 useless extension candidates. Maximal degree in co-relation 15993. Up to 5171 conditions per place. [2024-11-28 02:33:41,965 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 55 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-11-28 02:33:41,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 73 transitions, 443 flow [2024-11-28 02:33:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:33:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-28 02:33:41,967 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.369620253164557 [2024-11-28 02:33:41,967 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 329 flow. Second operand 5 states and 146 transitions. [2024-11-28 02:33:41,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 73 transitions, 443 flow [2024-11-28 02:33:41,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 73 transitions, 430 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-28 02:33:41,978 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 320 flow [2024-11-28 02:33:41,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-11-28 02:33:41,979 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 11 predicate places. [2024-11-28 02:33:41,979 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 320 flow [2024-11-28 02:33:41,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 02:33:41,979 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:41,979 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:41,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:33:41,980 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:41,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:41,980 INFO L85 PathProgramCache]: Analyzing trace with hash 608725122, now seen corresponding path program 1 times [2024-11-28 02:33:41,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:41,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760145557] [2024-11-28 02:33:41,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:41,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760145557] [2024-11-28 02:33:42,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760145557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:42,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984517224] [2024-11-28 02:33:42,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:42,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:42,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:42,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:42,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:33:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:42,409 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:33:42,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:42,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:33:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:33:42,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 02:33:42,531 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:33:42,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:33:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:33:42,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:33:42,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984517224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:42,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:33:42,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-28 02:33:42,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426036126] [2024-11-28 02:33:42,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:42,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:33:42,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:42,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:33:42,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:33:42,649 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-28 02:33:42,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:42,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:42,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-28 02:33:42,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:43,104 INFO L124 PetriNetUnfolderBase]: 2594/4337 cut-off events. [2024-11-28 02:33:43,105 INFO L125 PetriNetUnfolderBase]: For 4401/4449 co-relation queries the response was YES. [2024-11-28 02:33:43,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11328 conditions, 4337 events. 2594/4337 cut-off events. For 4401/4449 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 25781 event pairs, 1771 based on Foata normal form. 286/4146 useless extension candidates. Maximal degree in co-relation 11276. Up to 3638 conditions per place. [2024-11-28 02:33:43,118 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 54 selfloop transitions, 4 changer transitions 1/71 dead transitions. [2024-11-28 02:33:43,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 71 transitions, 432 flow [2024-11-28 02:33:43,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:33:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:33:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-11-28 02:33:43,120 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38924050632911394 [2024-11-28 02:33:43,120 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 320 flow. Second operand 4 states and 123 transitions. [2024-11-28 02:33:43,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 71 transitions, 432 flow [2024-11-28 02:33:43,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 71 transitions, 423 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:33:43,122 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 304 flow [2024-11-28 02:33:43,122 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-11-28 02:33:43,123 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2024-11-28 02:33:43,123 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 304 flow [2024-11-28 02:33:43,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:43,123 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:43,123 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:43,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:33:43,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:43,323 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:43,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:43,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1652539322, now seen corresponding path program 1 times [2024-11-28 02:33:43,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:43,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189480756] [2024-11-28 02:33:43,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:43,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:33:43,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189480756] [2024-11-28 02:33:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189480756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:43,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:43,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106563116] [2024-11-28 02:33:43,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:43,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:43,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:43,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:43,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:43,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 02:33:43,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:43,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:43,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:43,970 INFO L124 PetriNetUnfolderBase]: 2862/4817 cut-off events. [2024-11-28 02:33:43,970 INFO L125 PetriNetUnfolderBase]: For 4475/4499 co-relation queries the response was YES. [2024-11-28 02:33:43,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12278 conditions, 4817 events. 2862/4817 cut-off events. For 4475/4499 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 28814 event pairs, 1092 based on Foata normal form. 1/4342 useless extension candidates. Maximal degree in co-relation 12225. Up to 2024 conditions per place. [2024-11-28 02:33:43,997 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 77 selfloop transitions, 2 changer transitions 8/99 dead transitions. [2024-11-28 02:33:43,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 599 flow [2024-11-28 02:33:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:43,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:33:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-11-28 02:33:43,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5654008438818565 [2024-11-28 02:33:43,999 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 304 flow. Second operand 3 states and 134 transitions. [2024-11-28 02:33:43,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 599 flow [2024-11-28 02:33:44,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 99 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:44,005 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 304 flow [2024-11-28 02:33:44,006 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-11-28 02:33:44,006 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2024-11-28 02:33:44,006 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 304 flow [2024-11-28 02:33:44,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 02:33:44,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:44,007 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:44,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:33:44,007 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:44,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:44,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1351843781, now seen corresponding path program 1 times [2024-11-28 02:33:44,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:44,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151194152] [2024-11-28 02:33:44,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:44,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:44,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:33:44,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:44,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151194152] [2024-11-28 02:33:44,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151194152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:33:44,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:33:44,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:33:44,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399535349] [2024-11-28 02:33:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:33:44,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:33:44,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:44,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:33:44,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:33:44,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 79 [2024-11-28 02:33:44,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:44,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:44,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 79 [2024-11-28 02:33:44,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:44,602 INFO L124 PetriNetUnfolderBase]: 2406/4347 cut-off events. [2024-11-28 02:33:44,603 INFO L125 PetriNetUnfolderBase]: For 3565/3579 co-relation queries the response was YES. [2024-11-28 02:33:44,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10693 conditions, 4347 events. 2406/4347 cut-off events. For 3565/3579 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 27616 event pairs, 945 based on Foata normal form. 140/4055 useless extension candidates. Maximal degree in co-relation 10640. Up to 1678 conditions per place. [2024-11-28 02:33:44,635 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 67 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2024-11-28 02:33:44,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 466 flow [2024-11-28 02:33:44,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:33:44,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:33:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-28 02:33:44,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5232067510548524 [2024-11-28 02:33:44,636 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 304 flow. Second operand 3 states and 124 transitions. [2024-11-28 02:33:44,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 466 flow [2024-11-28 02:33:44,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 459 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 02:33:44,641 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 288 flow [2024-11-28 02:33:44,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-11-28 02:33:44,642 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-28 02:33:44,642 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 288 flow [2024-11-28 02:33:44,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:33:44,642 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:33:44,642 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:44,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:33:44,642 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-28 02:33:44,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:33:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash -158741908, now seen corresponding path program 1 times [2024-11-28 02:33:44,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:33:44,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900716982] [2024-11-28 02:33:44,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:33:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:33:44,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:33:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900716982] [2024-11-28 02:33:44,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900716982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:33:44,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308586278] [2024-11-28 02:33:44,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:33:44,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:44,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:33:44,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:33:44,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:33:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:33:44,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:33:44,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:33:44,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2024-11-28 02:33:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:33:44,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:33:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:33:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308586278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:33:44,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:33:44,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-28 02:33:44,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436583046] [2024-11-28 02:33:44,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:33:44,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:33:44,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:33:44,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:33:44,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:33:44,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-28 02:33:44,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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 02:33:44,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:33:44,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-28 02:33:44,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:33:45,687 INFO L124 PetriNetUnfolderBase]: 2222/3940 cut-off events. [2024-11-28 02:33:45,687 INFO L125 PetriNetUnfolderBase]: For 3317/3317 co-relation queries the response was YES. [2024-11-28 02:33:45,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9520 conditions, 3940 events. 2222/3940 cut-off events. For 3317/3317 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 24125 event pairs, 722 based on Foata normal form. 0/3621 useless extension candidates. Maximal degree in co-relation 9466. Up to 1314 conditions per place. [2024-11-28 02:33:45,700 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2024-11-28 02:33:45,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 612 flow [2024-11-28 02:33:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:33:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 02:33:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2024-11-28 02:33:45,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4936708860759494 [2024-11-28 02:33:45,702 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 288 flow. Second operand 5 states and 195 transitions. [2024-11-28 02:33:45,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 612 flow [2024-11-28 02:33:45,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 110 transitions, 603 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 02:33:45,705 INFO L231 Difference]: Finished difference. Result has 82 places, 0 transitions, 0 flow [2024-11-28 02:33:45,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=82, PETRI_TRANSITIONS=0} [2024-11-28 02:33:45,706 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2024-11-28 02:33:45,706 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 0 transitions, 0 flow [2024-11-28 02:33:45,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 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 02:33:45,708 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2024-11-28 02:33:45,709 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2024-11-28 02:33:45,710 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (18 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2024-11-28 02:33:45,711 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2024-11-28 02:33:45,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 39 remaining) [2024-11-28 02:33:45,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 39 remaining) [2024-11-28 02:33:45,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2024-11-28 02:33:45,712 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2024-11-28 02:33:45,713 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2024-11-28 02:33:45,713 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 39 remaining) [2024-11-28 02:33:45,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:33:45,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:33:45,914 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:33:45,919 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:33:45,919 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:33:45,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:33:45 BasicIcfg [2024-11-28 02:33:45,926 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:33:45,927 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:33:45,927 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:33:45,928 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:33:45,928 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:33:12" (3/4) ... [2024-11-28 02:33:45,931 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:33:45,934 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 02:33:45,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 02:33:45,935 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-28 02:33:45,942 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 187 nodes and edges [2024-11-28 02:33:45,943 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2024-11-28 02:33:45,943 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-28 02:33:45,944 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:33:46,083 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:33:46,084 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:33:46,084 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:33:46,086 INFO L158 Benchmark]: Toolchain (without parser) took 34971.37ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 94.7MB in the beginning and 1.0GB in the end (delta: -923.1MB). Peak memory consumption was 333.2MB. Max. memory is 16.1GB. [2024-11-28 02:33:46,086 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:33:46,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.41ms. Allocated memory is still 117.4MB. Free memory was 94.7MB in the beginning and 81.9MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:33:46,087 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.23ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 79.4MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:33:46,087 INFO L158 Benchmark]: Boogie Preprocessor took 88.84ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 76.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:33:46,087 INFO L158 Benchmark]: RCFGBuilder took 1398.91ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 76.7MB in the beginning and 316.8MB in the end (delta: -240.2MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2024-11-28 02:33:46,088 INFO L158 Benchmark]: TraceAbstraction took 32944.17ms. Allocated memory was 352.3MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 316.8MB in the beginning and 1.0GB in the end (delta: -706.4MB). Peak memory consumption was 978.5MB. Max. memory is 16.1GB. [2024-11-28 02:33:46,088 INFO L158 Benchmark]: Witness Printer took 157.26ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:33:46,091 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 167.8MB. Free memory is still 104.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.41ms. Allocated memory is still 117.4MB. Free memory was 94.7MB in the beginning and 81.9MB in the end (delta: 12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.23ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 79.4MB in the end (delta: 2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.84ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 76.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1398.91ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 76.7MB in the beginning and 316.8MB in the end (delta: -240.2MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. * TraceAbstraction took 32944.17ms. Allocated memory was 352.3MB in the beginning and 1.4GB in the end (delta: 1.0GB). Free memory was 316.8MB in the beginning and 1.0GB in the end (delta: -706.4MB). Peak memory consumption was 978.5MB. Max. memory is 16.1GB. * Witness Printer took 157.26ms. Allocated memory is still 1.4GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 123]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.8s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 23.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1344 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1155 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3902 IncrementalHoareTripleChecker+Invalid, 4018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 17 mSDtfsCounter, 3902 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=356occurred in iteration=15, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 449 ConstructedInterpolants, 5 QuantifiedInterpolants, 2965 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1145 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 31 InterpolantComputations, 17 PerfectInterpolantSequences, 130/153 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:33:46,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb59e7bd-d7d9-4ee4-97ca-4035be89828a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE